Online phrase extraction speaks rulefactory's language.

2 files changed, 10981 insertions, 2541 deletions

diff --git a/python/src/sa/_sa.c b/python/src/sa/_sa.c
index d7b9df9d..8f728983 100644
--- a/python/src/sa/_sa.c
+++ b/python/src/sa/_sa.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.17.1 on Thu Dec 27 19:34:12 2012 */
+/* Generated by Cython 0.17.1 on Thu Dec 27 23:43:01 2012 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -371,18 +371,21 @@ struct __pyx_obj_3_sa___pyx_scope_struct_11_encode_words;
 struct __pyx_obj_3_sa_LCP;
 struct __pyx_obj_3_sa_DataArray;
 struct __pyx_obj_3_sa_BitSetIterator;
+struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr;
 struct __pyx_obj_3_sa_Precomputation;
+struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance;
 struct __pyx_obj_3_sa___pyx_scope_struct_18_alignments;
+struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule;
 struct __pyx_obj_3_sa___pyx_scope_struct_14_genexpr;
 struct __pyx_obj_3_sa_SuffixArray;
 struct __pyx_obj_3_sa___pyx_scope_struct_16___str__;
 struct __pyx_obj_3_sa_Alphabet;
 struct __pyx_obj_3_sa_Rule;
 struct __pyx_obj_3_sa___pyx_scope_struct_6_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__;
 struct __pyx_obj_3_sa___pyx_scope_struct_2_genexpr;
 struct __pyx_obj_3_sa_PhraseLocation;
 struct __pyx_obj_3_sa___pyx_scope_struct_15___iter__;
+struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_1_read_bitext;
 struct __pyx_obj_3_sa___pyx_scope_struct_13_decode_words;
 struct __pyx_obj_3_sa_FeatureVector;
@@ -396,14 +399,16 @@ struct __pyx_obj_3_sa_StringMap;
 struct __pyx_obj_3_sa_TrieNode;
 struct __pyx_obj_3_sa_ExtendedTrieNode;
 struct __pyx_obj_3_sa_TrieMap;
+struct __pyx_obj_3_sa___pyx_scope_struct_26___str__;
 struct __pyx_obj_3_sa___pyx_scope_struct_8_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_4_make_lattice;
+struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr;
 struct __pyx_obj_3_sa_Phrase;
 struct __pyx_obj_3_sa___pyx_scope_struct____iter__;
 struct __pyx_obj_3_sa_TrieTable;
 struct __pyx_obj_3_sa___pyx_scope_struct_5_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_10_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_21___str__;
+struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__;
 struct __pyx_obj_3_sa_FloatList;
 struct __pyx_t_3_sa__node;
 struct __pyx_t_3_sa__BitSet;
@@ -558,6 +563,13 @@ struct __pyx_obj_3_sa_HieroCachingRuleFactory {
   int require_aligned_chunks;
   struct __pyx_obj_3_sa_IntList *findexes;
   struct __pyx_obj_3_sa_IntList *findexes1;
+  PyObject *phrases_f;
+  PyObject *phrases_e;
+  PyObject *phrases_fe;
+  PyObject *phrases_al;
+  PyObject *bilex_f;
+  PyObject *bilex_e;
+  PyObject *bilex_fe;
 };
 
 
@@ -639,17 +651,18 @@ struct __pyx_obj_3_sa___pyx_scope_struct_12_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":21
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2102
  * 
- *     def __str__(self):
- *         return ' '.join('%s=%s' % feat for feat in self)             # <<<<<<<<<<<<<<
- * 
- * cdef class Scorer:
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
  */
 struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *__pyx_outer_scope;
-  PyObject *__pyx_v_feat;
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *__pyx_outer_scope;
+  PyObject *__pyx_v_i;
+  PyObject *__pyx_v_j;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
   PyObject *(*__pyx_t_2)(PyObject *);
@@ -782,6 +795,23 @@ struct __pyx_obj_3_sa_BitSetIterator {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2103
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),             # <<<<<<<<<<<<<<
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ *                                                 a_str)
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *__pyx_outer_scope;
+  PyObject *__pyx_v_sym;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/precomputation.pxi":188
  * 
  * 
@@ -803,6 +833,27 @@ struct __pyx_obj_3_sa_Precomputation {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1826
+ *     # Extract hierarchical phrase pairs
+ *     # Update bilexical counts
+ *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
+ * 
+ *         # Bilexical counts
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance {
+  PyObject_HEAD
+  PyObject *__pyx_v_al;
+  PyObject *__pyx_v_al_span;
+  PyObject *__pyx_v_cover;
+  PyObject *__pyx_v_e_words;
+  PyObject *__pyx_v_extract;
+  PyObject *__pyx_v_f_len;
+  PyObject *__pyx_v_f_words;
+  PyObject *__pyx_v_rules;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/rule.pxi":190
  *         return ' ||| '.join(fields)
  * 
@@ -820,6 +871,21 @@ struct __pyx_obj_3_sa___pyx_scope_struct_18_alignments {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2101
+ *         k += 1
+ * 
+ * def fmt_rule(f_sym, e_sym, links):             # <<<<<<<<<<<<<<
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule {
+  PyObject_HEAD
+  PyObject *__pyx_v_e_sym;
+  PyObject *__pyx_v_f_sym;
+  PyObject *__pyx_v_links;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
  * 
  * def decode_words(syms):
@@ -917,22 +983,6 @@ struct __pyx_obj_3_sa___pyx_scope_struct_6_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":15
- *         self.values.append(value)
- * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(self.names.len):
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ {
-  PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
-  int __pyx_t_0;
-  unsigned int __pyx_t_1;
-};
-
-
 /* "/home/m/workspace/cdec/python/src/sa/data_array.pxi":74
  *     def read_bitext(self, char* filename, int side):
  *         with gzip_or_text(filename) as fp:
@@ -976,6 +1026,23 @@ struct __pyx_obj_3_sa___pyx_scope_struct_15___iter__ {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2104
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),             # <<<<<<<<<<<<<<
+ *                                                 a_str)
+ * 
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *__pyx_outer_scope;
+  PyObject *__pyx_v_sym;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/data_array.pxi":72
  *             self.read_text_data(fp)
  * 
@@ -1029,7 +1096,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_7_decode_lattice {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":933
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":954
  *         return sorted(result);
  * 
  *     def input(self, fwords, meta):             # <<<<<<<<<<<<<<
@@ -1228,6 +1295,19 @@ struct __pyx_obj_3_sa_TrieMap {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":20
+ *             yield (FD.word(self.names[i]), self.values[i])
+ * 
+ *     def __str__(self):             # <<<<<<<<<<<<<<
+ *         return ' '.join('%s=%s' % feat for feat in self)
+ * 
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
  * 
  * def decode_lattice(lattice):
@@ -1269,6 +1349,23 @@ struct __pyx_obj_3_sa___pyx_scope_struct_4_make_lattice {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":21
+ * 
+ *     def __str__(self):
+ *         return ' '.join('%s=%s' % feat for feat in self)             # <<<<<<<<<<<<<<
+ * 
+ * cdef class Scorer:
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *__pyx_outer_scope;
+  PyObject *__pyx_v_feat;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
 /* "_sa.pxd":29
  *     cdef FloatList values
  * 
@@ -1352,16 +1449,19 @@ struct __pyx_obj_3_sa___pyx_scope_struct_10_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":20
- *             yield (FD.word(self.names[i]), self.values[i])
- * 
- *     def __str__(self):             # <<<<<<<<<<<<<<
- *         return ' '.join('%s=%s' % feat for feat in self)
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":15
+ *         self.values.append(value)
  * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(self.names.len):
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ {
+struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ {
   PyObject_HEAD
+  unsigned int __pyx_v_i;
   struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
+  int __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
@@ -2272,9 +2372,14 @@ static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_16___str__ = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_17_genexpr = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_18_alignments = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_19_input = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_20___iter__ = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21___str__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_20_add_instance = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21_fmt_rule = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_23_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_24_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_25___iter__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_26___str__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_27_genexpr = 0;
 static int __pyx_v_3_sa_MIN_BOTTOM_SIZE;
 static int __pyx_v_3_sa_MIN_BOTTOM_BITS;
 static int __pyx_v_3_sa_LOWER_MASK[32];
@@ -2523,6 +2628,8 @@ static int __pyx_pf_3_sa_9TrieTable_4root_4__del__(struct __pyx_obj_3_sa_TrieTab
 static int __pyx_pf_3_sa_14PhraseLocation___cinit__(struct __pyx_obj_3_sa_PhraseLocation *__pyx_v_self, int __pyx_v_sa_low, int __pyx_v_sa_high, int __pyx_v_arr_low, int __pyx_v_arr_high, PyObject *__pyx_v_arr, int __pyx_v_num_subpatterns); /* proto */
 static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx_v_self, int __pyx_v_sample_size, struct __pyx_obj_3_sa_SuffixArray *__pyx_v_fsarray); /* proto */
 static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *__pyx_v_self, struct __pyx_obj_3_sa_PhraseLocation *__pyx_v_phrase_location); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
 static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, struct __pyx_obj_3_sa_Alignment *__pyx_v_alignment, float __pyx_v_by_slack_factor, char *__pyx_v_category, PyObject *__pyx_v_max_chunks, unsigned int __pyx_v_max_initial_size, unsigned int __pyx_v_max_length, unsigned int __pyx_v_max_nonterminals, PyObject *__pyx_v_max_target_chunks, PyObject *__pyx_v_max_target_length, unsigned int __pyx_v_min_gap_size, PyObject *__pyx_v_precompute_file, unsigned int __pyx_v_precompute_secondary_rank, unsigned int __pyx_v_precompute_rank, int __pyx_v_require_aligned_terminal, int __pyx_v_require_aligned_chunks, unsigned int __pyx_v_train_max_initial_size, unsigned int __pyx_v_train_min_gap_size, int __pyx_v_tight_phrases, int __pyx_v_use_baeza_yates, int __pyx_v_use_collocations, int __pyx_v_use_index); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, struct __pyx_obj_3_sa_SuffixArray *__pyx_v_fsarray, struct __pyx_obj_3_sa_DataArray *__pyx_v_edarray, struct __pyx_obj_3_sa_Sampler *__pyx_v_sampler, struct __pyx_obj_3_sa_Scorer *__pyx_v_scorer); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_pattern); /* proto */
@@ -2534,11 +2641,22 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_fwords, PyObject *__pyx_v_ifrom, PyObject *__pyx_v_dist); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_fwords, PyObject *__pyx_v_ifrom, PyObject *__pyx_v_ito); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v__columns, PyObject *__pyx_v_curr_idx, PyObject *__pyx_v_min_dist); /* proto */
-static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda4(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda5(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_22input(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_fwords, PyObject *__pyx_v_meta); /* proto */
-static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(CYTHON_UNUSED struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words, PyObject *__pyx_v_alignment); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(PyObject *__pyx_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_f_j, PyObject *__pyx_v_e_i, PyObject *__pyx_v_e_j, PyObject *__pyx_v_wc, PyObject *__pyx_v_links, PyObject *__pyx_v_nt, PyObject *__pyx_v_nt_open); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words, PyObject *__pyx_v_alignment); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_27aggr_bilex(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words); /* proto */
+static PyObject *__pyx_lambda_funcdef_lambda6(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_29form_rules(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_e_i, PyObject *__pyx_v_f_span, PyObject *__pyx_v_e_span, PyObject *__pyx_v_nt, PyObject *__pyx_v_al); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3_sa_12span_check(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_14span_flip(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_8fmt_rule_genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_3_sa_8fmt_rule_3genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_3_sa_8fmt_rule_6genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_3_sa_16fmt_rule(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_f_sym, PyObject *__pyx_v_e_sym, PyObject *__pyx_v_links); /* proto */
 static int __pyx_pf_3_sa_13FeatureVector___cinit__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_13FeatureVector_2set(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self, unsigned int __pyx_v_name, float __pyx_v_value); /* proto */
 static PyObject *__pyx_pf_3_sa_13FeatureVector_4__iter__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self); /* proto */
@@ -2604,8 +2722,11 @@ static char __pyx_k__f[] = "f";
 static char __pyx_k__h[] = "h";
 static char __pyx_k__i[] = "i";
 static char __pyx_k__j[] = "j";
+static char __pyx_k__k[] = "k";
 static char __pyx_k__r[] = "r";
 static char __pyx_k__w[] = "w";
+static char __pyx_k__x[] = "x";
+static char __pyx_k__y[] = "y";
 static char __pyx_k_100[] = "Sampling strategy: uniform, max sample size = %d";
 static char __pyx_k_101[] = "Sampling strategy: no sampling";
 static char __pyx_k_103[] = "require_aligned_terminal";
@@ -2637,19 +2758,29 @@ static char __pyx_k_130[] = "Inside edges of following subphrase are not tight";
 static char __pyx_k_131[] = "Subphrase [%d, %d] failed integrity check";
 static char __pyx_k_132[] = "Didn't extract anything from [%d, %d] -> [%d, %d]";
 static char __pyx_k_133[] = "Unable to extract basic phrase";
-static char __pyx_k_134[] = "I would add:";
-static char __pyx_k_136[] = "%s=%s";
-static char __pyx_k_139[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
-static char __pyx_k_140[] = "cdec.sa";
-static char __pyx_k_144[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
-static char __pyx_k_153[] = "*EPS*";
+static char __pyx_k_136[] = "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi";
+static char __pyx_k_137[] = "{0}-{1}";
+static char __pyx_k_138[] = "[X] ||| {0} ||| {1} ||| {2}";
+static char __pyx_k_139[] = "%s=%s";
+static char __pyx_k_142[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
+static char __pyx_k_143[] = "cdec.sa";
+static char __pyx_k_147[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
+static char __pyx_k_156[] = "*EPS*";
+static char __pyx_k__al[] = "al";
 static char __pyx_k__gc[] = "gc";
+static char __pyx_k__nt[] = "nt";
 static char __pyx_k__sa[] = "sa";
+static char __pyx_k__wc[] = "wc";
 static char __pyx_k___sa[] = "_sa";
+static char __pyx_k__add[] = "add";
 static char __pyx_k__arr[] = "arr";
 static char __pyx_k__cmp[] = "cmp";
 static char __pyx_k__col[] = "col";
+static char __pyx_k__e_i[] = "e_i";
+static char __pyx_k__e_j[] = "e_j";
 static char __pyx_k__end[] = "end";
+static char __pyx_k__f_i[] = "f_i";
+static char __pyx_k__f_j[] = "f_j";
 static char __pyx_k__isa[] = "isa";
 static char __pyx_k__ito[] = "ito";
 static char __pyx_k__key[] = "key";
@@ -2658,8 +2789,10 @@ static char __pyx_k__low[] = "low";
 static char __pyx_k__map[] = "map";
 static char __pyx_k__max[] = "max";
 static char __pyx_k__pad[] = "pad";
+static char __pyx_k__pop[] = "pop";
 static char __pyx_k__res[] = "res";
 static char __pyx_k__set[] = "set";
+static char __pyx_k__vec[] = "vec";
 static char __pyx_k__zip[] = "zip";
 static char __pyx_k__NULL[] = "NULL";
 static char __pyx_k__dist[] = "dist";
@@ -2667,9 +2800,11 @@ static char __pyx_k__gzip[] = "gzip";
 static char __pyx_k__high[] = "high";
 static char __pyx_k__info[] = "info";
 static char __pyx_k__join[] = "join";
+static char __pyx_k__link[] = "link";
 static char __pyx_k__meta[] = "meta";
 static char __pyx_k__name[] = "name";
 static char __pyx_k__open[] = "open";
+static char __pyx_k__rule[] = "rule";
 static char __pyx_k__seek[] = "seek";
 static char __pyx_k__side[] = "side";
 static char __pyx_k__size[] = "size";
@@ -2679,13 +2814,17 @@ static char __pyx_k__syms[] = "syms";
 static char __pyx_k__warn[] = "warn";
 static char __pyx_k__word[] = "word";
 static char __pyx_k___SEP_[] = "_SEP_";
+static char __pyx_k__a_str[] = "a_str";
 static char __pyx_k__arity[] = "arity";
 static char __pyx_k__chain[] = "chain";
 static char __pyx_k__debug[] = "debug";
+static char __pyx_k__e_sym[] = "e_sym";
 static char __pyx_k__eword[] = "eword";
+static char __pyx_k__f_sym[] = "f_sym";
 static char __pyx_k__fword[] = "fword";
 static char __pyx_k__ifrom[] = "ifrom";
 static char __pyx_k__index[] = "index";
+static char __pyx_k__links[] = "links";
 static char __pyx_k__merge[] = "merge";
 static char __pyx_k__range[] = "range";
 static char __pyx_k__reset[] = "reset";
@@ -2696,14 +2835,19 @@ static char __pyx_k__toMap[] = "toMap";
 static char __pyx_k__value[] = "value";
 static char __pyx_k__words[] = "words";
 static char __pyx_k__write[] = "write";
+static char __pyx_k__e_span[] = "e_span";
 static char __pyx_k__e_text[] = "e_text";
 static char __pyx_k__earray[] = "earray";
 static char __pyx_k__extend[] = "extend";
+static char __pyx_k__f_span[] = "f_span";
 static char __pyx_k__f_text[] = "f_text";
 static char __pyx_k__fcount[] = "fcount";
+static char __pyx_k__format[] = "format";
 static char __pyx_k__fwords[] = "fwords";
 static char __pyx_k__get_id[] = "get_id";
 static char __pyx_k__insert[] = "insert";
+static char __pyx_k__link_i[] = "link_i";
+static char __pyx_k__link_j[] = "link_j";
 static char __pyx_k__logger[] = "logger";
 static char __pyx_k__lookup[] = "lookup";
 static char __pyx_k__offset[] = "offset";
@@ -2724,6 +2868,7 @@ static char __pyx_k__collect[] = "collect";
 static char __pyx_k__e_words[] = "e_words";
 static char __pyx_k__edarray[] = "edarray";
 static char __pyx_k__ephrase[] = "ephrase";
+static char __pyx_k__extract[] = "extract";
 static char __pyx_k__f_words[] = "f_words";
 static char __pyx_k__fphrase[] = "fphrase";
 static char __pyx_k__fsarray[] = "fsarray";
@@ -2731,6 +2876,9 @@ static char __pyx_k__genexpr[] = "genexpr";
 static char __pyx_k__lattice[] = "lattice";
 static char __pyx_k__logging[] = "logging";
 static char __pyx_k__matches[] = "matches";
+static char __pyx_k__new_e_i[] = "new_e_i";
+static char __pyx_k__new_e_j[] = "new_e_j";
+static char __pyx_k__nt_open[] = "nt_open";
 static char __pyx_k__pathlen[] = "pathlen";
 static char __pyx_k__sa_high[] = "sa_high";
 static char __pyx_k__sampler[] = "sampler";
@@ -2747,6 +2895,7 @@ static char __pyx_k__children[] = "children";
 static char __pyx_k__curr_idx[] = "curr_idx";
 static char __pyx_k__extended[] = "extended";
 static char __pyx_k__filename[] = "filename";
+static char __pyx_k__fmt_rule[] = "fmt_rule";
 static char __pyx_k__frontier[] = "frontier";
 static char __pyx_k__get_e_id[] = "get_e_id";
 static char __pyx_k__get_f_id[] = "get_f_id";
@@ -2763,6 +2912,7 @@ static char __pyx_k__INCREMENT[] = "INCREMENT";
 static char __pyx_k__TypeError[] = "TypeError";
 static char __pyx_k____enter__[] = "__enter__";
 static char __pyx_k__alignment[] = "alignment";
+static char __pyx_k__collision[] = "collision";
 static char __pyx_k__enumerate[] = "enumerate";
 static char __pyx_k__from_data[] = "from_data";
 static char __pyx_k__from_text[] = "from_text";
@@ -2775,16 +2925,21 @@ static char __pyx_k__paircount[] = "paircount";
 static char __pyx_k__partition[] = "partition";
 static char __pyx_k__reachable[] = "reachable";
 static char __pyx_k__read_text[] = "read_text";
+static char __pyx_k__span_flip[] = "span_flip";
 static char __pyx_k__use_index[] = "use_index";
 static char __pyx_k__IndexError[] = "IndexError";
+static char __pyx_k__aggr_bilex[] = "aggr_bilex";
 static char __pyx_k__alignments[] = "alignments";
+static char __pyx_k__form_rules[] = "form_rules";
 static char __pyx_k__from_stats[] = "from_stats";
 static char __pyx_k__input_span[] = "input_span";
 static char __pyx_k__itervalues[] = "itervalues";
 static char __pyx_k__max_chunks[] = "max_chunks";
 static char __pyx_k__max_length[] = "max_length";
 static char __pyx_k__namedtuple[] = "namedtuple";
+static char __pyx_k__plus_links[] = "plus_links";
 static char __pyx_k__precompute[] = "precompute";
+static char __pyx_k__span_check[] = "span_check";
 static char __pyx_k__write_text[] = "write_text";
 static char __pyx_k__END_OF_FILE[] = "END_OF_FILE";
 static char __pyx_k__END_OF_LINE[] = "END_OF_LINE";
@@ -2795,6 +2950,7 @@ static char __pyx_k__from_binary[] = "from_binary";
 static char __pyx_k__initial_len[] = "initial_len";
 static char __pyx_k__input_match[] = "input_match";
 static char __pyx_k__next_states[] = "next_states";
+static char __pyx_k__old_last_nt[] = "old_last_nt";
 static char __pyx_k__precomputed[] = "precomputed";
 static char __pyx_k__read_binary[] = "read_binary";
 static char __pyx_k__read_bitext[] = "read_bitext";
@@ -2867,12 +3023,14 @@ static PyObject *__pyx_kp_s_130;
 static PyObject *__pyx_kp_s_131;
 static PyObject *__pyx_kp_s_132;
 static PyObject *__pyx_kp_s_133;
-static PyObject *__pyx_kp_s_134;
 static PyObject *__pyx_kp_s_136;
+static PyObject *__pyx_kp_s_137;
+static PyObject *__pyx_kp_s_138;
 static PyObject *__pyx_kp_s_139;
 static PyObject *__pyx_kp_s_14;
-static PyObject *__pyx_kp_s_140;
-static PyObject *__pyx_kp_s_144;
+static PyObject *__pyx_kp_s_142;
+static PyObject *__pyx_kp_s_143;
+static PyObject *__pyx_kp_s_147;
 static PyObject *__pyx_kp_s_18;
 static PyObject *__pyx_kp_s_2;
 static PyObject *__pyx_kp_s_21;
@@ -2945,7 +3103,11 @@ static PyObject *__pyx_n_s____test__;
 static PyObject *__pyx_n_s___columns;
 static PyObject *__pyx_n_s___doquicksort;
 static PyObject *__pyx_n_s___sa;
+static PyObject *__pyx_n_s__a_str;
+static PyObject *__pyx_n_s__add;
 static PyObject *__pyx_n_s__advance;
+static PyObject *__pyx_n_s__aggr_bilex;
+static PyObject *__pyx_n_s__al;
 static PyObject *__pyx_n_s__alignment;
 static PyObject *__pyx_n_s__alignments;
 static PyObject *__pyx_n_s__alphabet_size;
@@ -2961,6 +3123,7 @@ static PyObject *__pyx_n_s__cmp;
 static PyObject *__pyx_n_s__col;
 static PyObject *__pyx_n_s__collect;
 static PyObject *__pyx_n_s__collections;
+static PyObject *__pyx_n_s__collision;
 static PyObject *__pyx_n_s__curr_idx;
 static PyObject *__pyx_n_s__debug;
 static PyObject *__pyx_n_s__decode_lattice;
@@ -2969,6 +3132,10 @@ static PyObject *__pyx_n_s__decode_words;
 static PyObject *__pyx_n_s__defaultdict;
 static PyObject *__pyx_n_s__dist;
 static PyObject *__pyx_n_s__e;
+static PyObject *__pyx_n_s__e_i;
+static PyObject *__pyx_n_s__e_j;
+static PyObject *__pyx_n_s__e_span;
+static PyObject *__pyx_n_s__e_sym;
 static PyObject *__pyx_n_s__e_text;
 static PyObject *__pyx_n_s__e_words;
 static PyObject *__pyx_n_s__earray;
@@ -2980,11 +3147,19 @@ static PyObject *__pyx_n_s__ephrase;
 static PyObject *__pyx_n_s__eword;
 static PyObject *__pyx_n_s__extend;
 static PyObject *__pyx_n_s__extended;
+static PyObject *__pyx_n_s__extract;
 static PyObject *__pyx_n_s__f;
+static PyObject *__pyx_n_s__f_i;
+static PyObject *__pyx_n_s__f_j;
+static PyObject *__pyx_n_s__f_span;
+static PyObject *__pyx_n_s__f_sym;
 static PyObject *__pyx_n_s__f_text;
 static PyObject *__pyx_n_s__f_words;
 static PyObject *__pyx_n_s__fcount;
 static PyObject *__pyx_n_s__filename;
+static PyObject *__pyx_n_s__fmt_rule;
+static PyObject *__pyx_n_s__form_rules;
+static PyObject *__pyx_n_s__format;
 static PyObject *__pyx_n_s__fphrase;
 static PyObject *__pyx_n_s__from_binary;
 static PyObject *__pyx_n_s__from_data;
@@ -3026,9 +3201,14 @@ static PyObject *__pyx_n_s__itervalues;
 static PyObject *__pyx_n_s__ito;
 static PyObject *__pyx_n_s__j;
 static PyObject *__pyx_n_s__join;
+static PyObject *__pyx_n_s__k;
 static PyObject *__pyx_n_s__key;
 static PyObject *__pyx_n_s__lattice;
 static PyObject *__pyx_n_s__lhs;
+static PyObject *__pyx_n_s__link;
+static PyObject *__pyx_n_s__link_i;
+static PyObject *__pyx_n_s__link_j;
+static PyObject *__pyx_n_s__links;
 static PyObject *__pyx_n_s__logger;
 static PyObject *__pyx_n_s__logging;
 static PyObject *__pyx_n_s__lookup;
@@ -3049,9 +3229,14 @@ static PyObject *__pyx_n_s__min_dist;
 static PyObject *__pyx_n_s__min_gap_size;
 static PyObject *__pyx_n_s__name;
 static PyObject *__pyx_n_s__namedtuple;
+static PyObject *__pyx_n_s__new_e_i;
+static PyObject *__pyx_n_s__new_e_j;
 static PyObject *__pyx_n_s__next_states;
+static PyObject *__pyx_n_s__nt;
+static PyObject *__pyx_n_s__nt_open;
 static PyObject *__pyx_n_s__num_subpatterns;
 static PyObject *__pyx_n_s__offset;
+static PyObject *__pyx_n_s__old_last_nt;
 static PyObject *__pyx_n_s__open;
 static PyObject *__pyx_n_s__pad;
 static PyObject *__pyx_n_s__paircount;
@@ -3061,6 +3246,8 @@ static PyObject *__pyx_n_s__pattern2phrase;
 static PyObject *__pyx_n_s__pattern2phrase_plus;
 static PyObject *__pyx_n_s__phrase;
 static PyObject *__pyx_n_s__phrase_location;
+static PyObject *__pyx_n_s__plus_links;
+static PyObject *__pyx_n_s__pop;
 static PyObject *__pyx_n_s__precompute;
 static PyObject *__pyx_n_s__precompute_file;
 static PyObject *__pyx_n_s__precompute_rank;
@@ -3078,6 +3265,7 @@ static PyObject *__pyx_n_s__reset;
 static PyObject *__pyx_n_s__resource;
 static PyObject *__pyx_n_s__ru_stime;
 static PyObject *__pyx_n_s__ru_utime;
+static PyObject *__pyx_n_s__rule;
 static PyObject *__pyx_n_s__sa;
 static PyObject *__pyx_n_s__sa_high;
 static PyObject *__pyx_n_s__sa_low;
@@ -3095,6 +3283,8 @@ static PyObject *__pyx_n_s__size;
 static PyObject *__pyx_n_s__skip;
 static PyObject *__pyx_n_s__sorted;
 static PyObject *__pyx_n_s__source;
+static PyObject *__pyx_n_s__span_check;
+static PyObject *__pyx_n_s__span_flip;
 static PyObject *__pyx_n_s__spanlen;
 static PyObject *__pyx_n_s__split;
 static PyObject *__pyx_n_s__start;
@@ -3112,14 +3302,18 @@ static PyObject *__pyx_n_s__use_collocations;
 static PyObject *__pyx_n_s__use_index;
 static PyObject *__pyx_n_s__use_sent_id;
 static PyObject *__pyx_n_s__value;
+static PyObject *__pyx_n_s__vec;
 static PyObject *__pyx_n_s__w;
 static PyObject *__pyx_n_s__warn;
+static PyObject *__pyx_n_s__wc;
 static PyObject *__pyx_n_s__word;
 static PyObject *__pyx_n_s__word_alignments;
 static PyObject *__pyx_n_s__word_ids;
 static PyObject *__pyx_n_s__words;
 static PyObject *__pyx_n_s__write;
 static PyObject *__pyx_n_s__write_text;
+static PyObject *__pyx_n_s__x;
+static PyObject *__pyx_n_s__y;
 static PyObject *__pyx_n_s__zip;
 static PyObject *__pyx_int_0;
 static PyObject *__pyx_int_1;
@@ -3181,20 +3375,27 @@ static PyObject *__pyx_k_tuple_98;
 static PyObject *__pyx_k_tuple_102;
 static PyObject *__pyx_k_tuple_107;
 static PyObject *__pyx_k_tuple_122;
-static PyObject *__pyx_k_tuple_135;
-static PyObject *__pyx_k_tuple_137;
-static PyObject *__pyx_k_tuple_141;
-static PyObject *__pyx_k_tuple_142;
+static PyObject *__pyx_k_tuple_134;
+static PyObject *__pyx_k_tuple_140;
+static PyObject *__pyx_k_tuple_144;
 static PyObject *__pyx_k_tuple_145;
-static PyObject *__pyx_k_tuple_147;
-static PyObject *__pyx_k_tuple_149;
-static PyObject *__pyx_k_tuple_151;
-static PyObject *__pyx_k_codeobj_138;
-static PyObject *__pyx_k_codeobj_143;
+static PyObject *__pyx_k_tuple_148;
+static PyObject *__pyx_k_tuple_150;
+static PyObject *__pyx_k_tuple_152;
+static PyObject *__pyx_k_tuple_154;
+static PyObject *__pyx_k_tuple_157;
+static PyObject *__pyx_k_tuple_159;
+static PyObject *__pyx_k_tuple_161;
+static PyObject *__pyx_k_codeobj_135;
+static PyObject *__pyx_k_codeobj_141;
 static PyObject *__pyx_k_codeobj_146;
-static PyObject *__pyx_k_codeobj_148;
-static PyObject *__pyx_k_codeobj_150;
-static PyObject *__pyx_k_codeobj_152;
+static PyObject *__pyx_k_codeobj_149;
+static PyObject *__pyx_k_codeobj_151;
+static PyObject *__pyx_k_codeobj_153;
+static PyObject *__pyx_k_codeobj_155;
+static PyObject *__pyx_k_codeobj_158;
+static PyObject *__pyx_k_codeobj_160;
+static PyObject *__pyx_k_codeobj_162;
 
 /* "_sa.pyx":5
  * import gzip
@@ -38432,7 +38633,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
     static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__alignment,&__pyx_n_s__by_slack_factor,&__pyx_n_s__category,&__pyx_n_s__max_chunks,&__pyx_n_s__max_initial_size,&__pyx_n_s__max_length,&__pyx_n_s__max_nonterminals,&__pyx_n_s__max_target_chunks,&__pyx_n_s__max_target_length,&__pyx_n_s__min_gap_size,&__pyx_n_s__precompute_file,&__pyx_n_s_70,&__pyx_n_s__precompute_rank,&__pyx_n_s_103,&__pyx_n_s_104,&__pyx_n_s_71,&__pyx_n_s__train_min_gap_size,&__pyx_n_s__tight_phrases,&__pyx_n_s__use_baeza_yates,&__pyx_n_s__use_collocations,&__pyx_n_s__use_index,0};
     PyObject* values[21] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":275
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":283
  *             char* category="[X]",
  *             # maximum number of contiguous chunks of terminal symbols in RHS of a rule. If None, defaults to max_nonterminals+1
  *             max_chunks=None,             # <<<<<<<<<<<<<<
@@ -38441,7 +38642,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[3] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":283
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":291
  *             unsigned max_nonterminals=2,
  *             # maximum number of contiguous chunks of terminal symbols in target-side RHS of a rule. If None, defaults to max_nonterminals+1
  *             max_target_chunks=None,             # <<<<<<<<<<<<<<
@@ -38450,7 +38651,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[7] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":285
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":293
  *             max_target_chunks=None,
  *             # maximum number of target side symbols (both T and NT) allowed in a rule. If None, defaults to max_initial_size
  *             max_target_length=None,             # <<<<<<<<<<<<<<
@@ -38459,7 +38660,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[8] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":289
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":297
  *             unsigned min_gap_size=2,
  *             # filename of file containing precomputed collocations
  *             precompute_file=None,             # <<<<<<<<<<<<<<
@@ -38602,7 +38803,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 267; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 275; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -38633,10 +38834,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
     }
     __pyx_v_alignment = ((struct __pyx_obj_3_sa_Alignment *)values[0]);
     if (values[1]) {
-      __pyx_v_by_slack_factor = __pyx_PyFloat_AsFloat(values[1]); if (unlikely((__pyx_v_by_slack_factor == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 271; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_by_slack_factor = __pyx_PyFloat_AsFloat(values[1]); if (unlikely((__pyx_v_by_slack_factor == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 279; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":271
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":279
  *             Alignment alignment,
  *             # parameter for double-binary search; doesn't seem to matter much
  *             float by_slack_factor=1.0,             # <<<<<<<<<<<<<<
@@ -38646,49 +38847,49 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_by_slack_factor = ((float)1.0);
     }
     if (values[2]) {
-      __pyx_v_category = PyBytes_AsString(values[2]); if (unlikely((!__pyx_v_category) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 273; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_category = PyBytes_AsString(values[2]); if (unlikely((!__pyx_v_category) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 281; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_category = ((char *)__pyx_k_105);
     }
     __pyx_v_max_chunks = values[3];
     if (values[4]) {
-      __pyx_v_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[4]); if (unlikely((__pyx_v_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 277; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[4]); if (unlikely((__pyx_v_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 285; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_initial_size = ((unsigned int)10);
     }
     if (values[5]) {
-      __pyx_v_max_length = __Pyx_PyInt_AsUnsignedInt(values[5]); if (unlikely((__pyx_v_max_length == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 279; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_length = __Pyx_PyInt_AsUnsignedInt(values[5]); if (unlikely((__pyx_v_max_length == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_length = ((unsigned int)5);
     }
     if (values[6]) {
-      __pyx_v_max_nonterminals = __Pyx_PyInt_AsUnsignedInt(values[6]); if (unlikely((__pyx_v_max_nonterminals == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 281; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_nonterminals = __Pyx_PyInt_AsUnsignedInt(values[6]); if (unlikely((__pyx_v_max_nonterminals == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 289; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_nonterminals = ((unsigned int)2);
     }
     __pyx_v_max_target_chunks = values[7];
     __pyx_v_max_target_length = values[8];
     if (values[9]) {
-      __pyx_v_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[9]); if (unlikely((__pyx_v_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[9]); if (unlikely((__pyx_v_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 295; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_min_gap_size = ((unsigned int)2);
     }
     __pyx_v_precompute_file = values[10];
     if (values[11]) {
-      __pyx_v_precompute_secondary_rank = __Pyx_PyInt_AsUnsignedInt(values[11]); if (unlikely((__pyx_v_precompute_secondary_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 291; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_precompute_secondary_rank = __Pyx_PyInt_AsUnsignedInt(values[11]); if (unlikely((__pyx_v_precompute_secondary_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 299; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_precompute_secondary_rank = ((unsigned int)20);
     }
     if (values[12]) {
-      __pyx_v_precompute_rank = __Pyx_PyInt_AsUnsignedInt(values[12]); if (unlikely((__pyx_v_precompute_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 293; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_precompute_rank = __Pyx_PyInt_AsUnsignedInt(values[12]); if (unlikely((__pyx_v_precompute_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 301; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_precompute_rank = ((unsigned int)100);
     }
     if (values[13]) {
-      __pyx_v_require_aligned_terminal = __Pyx_PyObject_IsTrue(values[13]); if (unlikely((__pyx_v_require_aligned_terminal == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 295; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_require_aligned_terminal = __Pyx_PyObject_IsTrue(values[13]); if (unlikely((__pyx_v_require_aligned_terminal == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 303; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":295
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":303
  *             unsigned precompute_rank=100,
  *             # require extracted rules to have at least one aligned word
  *             bint require_aligned_terminal=True,             # <<<<<<<<<<<<<<
@@ -38698,10 +38899,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_require_aligned_terminal = ((int)1);
     }
     if (values[14]) {
-      __pyx_v_require_aligned_chunks = __Pyx_PyObject_IsTrue(values[14]); if (unlikely((__pyx_v_require_aligned_chunks == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 297; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_require_aligned_chunks = __Pyx_PyObject_IsTrue(values[14]); if (unlikely((__pyx_v_require_aligned_chunks == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 305; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":297
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":305
  *             bint require_aligned_terminal=True,
  *             # require each contiguous chunk of extracted rules to have at least one aligned word
  *             bint require_aligned_chunks=False,             # <<<<<<<<<<<<<<
@@ -38711,20 +38912,20 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_require_aligned_chunks = ((int)0);
     }
     if (values[15]) {
-      __pyx_v_train_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[15]); if (unlikely((__pyx_v_train_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 299; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_train_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[15]); if (unlikely((__pyx_v_train_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 307; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_max_initial_size = ((unsigned int)10);
     }
     if (values[16]) {
-      __pyx_v_train_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[16]); if (unlikely((__pyx_v_train_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 301; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_train_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[16]); if (unlikely((__pyx_v_train_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 309; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_min_gap_size = ((unsigned int)2);
     }
     if (values[17]) {
-      __pyx_v_tight_phrases = __Pyx_PyObject_IsTrue(values[17]); if (unlikely((__pyx_v_tight_phrases == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 303; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_tight_phrases = __Pyx_PyObject_IsTrue(values[17]); if (unlikely((__pyx_v_tight_phrases == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 311; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":303
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":311
  *             unsigned train_min_gap_size=2,
  *             # False if phrases should be loose (better but slower), True otherwise
  *             bint tight_phrases=True,             # <<<<<<<<<<<<<<
@@ -38734,10 +38935,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_tight_phrases = ((int)1);
     }
     if (values[18]) {
-      __pyx_v_use_baeza_yates = __Pyx_PyObject_IsTrue(values[18]); if (unlikely((__pyx_v_use_baeza_yates == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 305; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_use_baeza_yates = __Pyx_PyObject_IsTrue(values[18]); if (unlikely((__pyx_v_use_baeza_yates == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 313; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":305
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":313
  *             bint tight_phrases=True,
  *             # True to require use of double-binary alg, false otherwise
  *             bint use_baeza_yates=True,             # <<<<<<<<<<<<<<
@@ -38747,10 +38948,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_use_baeza_yates = ((int)1);
     }
     if (values[19]) {
-      __pyx_v_use_collocations = __Pyx_PyObject_IsTrue(values[19]); if (unlikely((__pyx_v_use_collocations == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 307; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_use_collocations = __Pyx_PyObject_IsTrue(values[19]); if (unlikely((__pyx_v_use_collocations == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":307
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":315
  *             bint use_baeza_yates=True,
  *             # True to enable used of precomputed collocations
  *             bint use_collocations=True,             # <<<<<<<<<<<<<<
@@ -38760,10 +38961,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_use_collocations = ((int)1);
     }
     if (values[20]) {
-      __pyx_v_use_index = __Pyx_PyObject_IsTrue(values[20]); if (unlikely((__pyx_v_use_index == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 309; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_use_index = __Pyx_PyObject_IsTrue(values[20]); if (unlikely((__pyx_v_use_index == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 317; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":309
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":317
  *             bint use_collocations=True,
  *             # True to enable use of precomputed inverted indices
  *             bint use_index=True):             # <<<<<<<<<<<<<<
@@ -38775,13 +38976,13 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 1, 21, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 267; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 1, 21, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 275; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
   return -1;
   __pyx_L4_argument_unpacking_done:;
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_alignment), __pyx_ptype_3_sa_Alignment, 1, "alignment", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 269; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_alignment), __pyx_ptype_3_sa_Alignment, 1, "alignment", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 277; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)__pyx_v_self), __pyx_v_alignment, __pyx_v_by_slack_factor, __pyx_v_category, __pyx_v_max_chunks, __pyx_v_max_initial_size, __pyx_v_max_length, __pyx_v_max_nonterminals, __pyx_v_max_target_chunks, __pyx_v_max_target_length, __pyx_v_min_gap_size, __pyx_v_precompute_file, __pyx_v_precompute_secondary_rank, __pyx_v_precompute_rank, __pyx_v_require_aligned_terminal, __pyx_v_require_aligned_chunks, __pyx_v_train_max_initial_size, __pyx_v_train_min_gap_size, __pyx_v_tight_phrases, __pyx_v_use_baeza_yates, __pyx_v_use_collocations, __pyx_v_use_index);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -38791,8 +38992,128 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":267
- *     cdef IntList findexes1
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1 = {__Pyx_NAMESTR("lambda1"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1, METH_NOARGS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("lambda1 (wrapper)", 0);
+  __pyx_r = __pyx_lambda_funcdef_lambda1(__pyx_self);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":387
+ *         self.phrases_f = defaultdict(int)
+ *         self.phrases_e = defaultdict(int)
+ *         self.phrases_fe = defaultdict(lambda: defaultdict(int))             # <<<<<<<<<<<<<<
+ *         self.phrases_al = defaultdict(dict)
+ * 
+ */
+
+static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("lambda1", 0);
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  __pyx_r = __pyx_t_3;
+  __pyx_t_3 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.__cinit__.lambda1", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2 = {__Pyx_NAMESTR("lambda2"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2, METH_NOARGS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("lambda2 (wrapper)", 0);
+  __pyx_r = __pyx_lambda_funcdef_lambda2(__pyx_self);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":393
+ *         self.bilex_f = defaultdict(int)
+ *         self.bilex_e = defaultdict(int)
+ *         self.bilex_fe = defaultdict(lambda: defaultdict(int))             # <<<<<<<<<<<<<<
+ * 
+ *     def configure(self, SuffixArray fsarray, DataArray edarray,
+ */
+
+static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("lambda2", 0);
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  __pyx_r = __pyx_t_3;
+  __pyx_t_3 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.__cinit__.lambda2", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":275
+ *     cdef bilex_fe
  * 
  *     def __cinit__(self,             # <<<<<<<<<<<<<<
  *             # compiled alignment object (REQUIRED)
@@ -38806,26 +39127,27 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   PyObject *__pyx_t_2 = NULL;
   int __pyx_t_3;
   int __pyx_t_4;
+  PyObject *__pyx_t_5 = NULL;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__cinit__", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":315
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
  *         respectively.    This is because Chiang's model does not require
  *         them to be the same, therefore we don't either.'''
  *         self.rules = TrieTable(True) # cache             # <<<<<<<<<<<<<<
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  *         if alignment is None:
  */
-  __pyx_t_1 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 323; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 323; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_1);
   __Pyx_GIVEREF(__pyx_t_1);
   __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_TrieTable)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_TrieTable)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 323; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __Pyx_GIVEREF(__pyx_t_1);
@@ -38834,20 +39156,20 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->rules = ((struct __pyx_obj_3_sa_TrieTable *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":316
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":324
  *         them to be the same, therefore we don't either.'''
  *         self.rules = TrieTable(True) # cache
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())             # <<<<<<<<<<<<<<
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 324; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 324; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 324; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 324; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   __Pyx_GIVEREF(__pyx_t_2);
@@ -38856,7 +39178,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->rules->root = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":317
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
  *         self.rules = TrieTable(True) # cache
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  *         if alignment is None:             # <<<<<<<<<<<<<<
@@ -38866,23 +39188,23 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (((PyObject *)__pyx_v_alignment) == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":318
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")             # <<<<<<<<<<<<<<
  *         self.alignment = alignment
  * 
  */
-    __pyx_t_2 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_107), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 318; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_107), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 326; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_Raise(__pyx_t_2, 0, 0, 0);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 318; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 326; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L3;
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":319
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")
  *         self.alignment = alignment             # <<<<<<<<<<<<<<
@@ -38895,7 +39217,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __Pyx_DECREF(((PyObject *)__pyx_v_self->alignment));
   __pyx_v_self->alignment = __pyx_v_alignment;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":331
  *         # grammar parameters and settings
  *         # NOTE: setting max_nonterminals > 2 is not currently supported in Hiero
  *         self.max_length = max_length             # <<<<<<<<<<<<<<
@@ -38904,7 +39226,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->max_length = __pyx_v_max_length;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":324
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":332
  *         # NOTE: setting max_nonterminals > 2 is not currently supported in Hiero
  *         self.max_length = max_length
  *         self.max_nonterminals = max_nonterminals             # <<<<<<<<<<<<<<
@@ -38913,7 +39235,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->max_nonterminals = __pyx_v_max_nonterminals;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":333
  *         self.max_length = max_length
  *         self.max_nonterminals = max_nonterminals
  *         self.max_initial_size = max_initial_size             # <<<<<<<<<<<<<<
@@ -38922,7 +39244,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->max_initial_size = __pyx_v_max_initial_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":334
  *         self.max_nonterminals = max_nonterminals
  *         self.max_initial_size = max_initial_size
  *         self.train_max_initial_size = train_max_initial_size             # <<<<<<<<<<<<<<
@@ -38931,7 +39253,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->train_max_initial_size = __pyx_v_train_max_initial_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":335
  *         self.max_initial_size = max_initial_size
  *         self.train_max_initial_size = train_max_initial_size
  *         self.min_gap_size = min_gap_size             # <<<<<<<<<<<<<<
@@ -38940,7 +39262,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->min_gap_size = __pyx_v_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":328
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":336
  *         self.train_max_initial_size = train_max_initial_size
  *         self.min_gap_size = min_gap_size
  *         self.train_min_gap_size = train_min_gap_size             # <<<<<<<<<<<<<<
@@ -38949,7 +39271,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->train_min_gap_size = __pyx_v_train_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":329
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":337
  *         self.min_gap_size = min_gap_size
  *         self.train_min_gap_size = train_min_gap_size
  *         self.category = sym_fromstring(category, False)             # <<<<<<<<<<<<<<
@@ -38958,7 +39280,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->category = __pyx_f_3_sa_sym_fromstring(__pyx_v_category, 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":331
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":339
  *         self.category = sym_fromstring(category, False)
  * 
  *         if max_chunks is None:             # <<<<<<<<<<<<<<
@@ -38968,7 +39290,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_chunks == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":332
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":340
  * 
  *         if max_chunks is None:
  *             self.max_chunks = self.max_nonterminals + 1             # <<<<<<<<<<<<<<
@@ -38980,19 +39302,19 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":334
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":342
  *             self.max_chunks = self.max_nonterminals + 1
  *         else:
  *             self.max_chunks = max_chunks             # <<<<<<<<<<<<<<
  * 
  *         if max_target_chunks is None:
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 334; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 342; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_chunks = __pyx_t_4;
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":336
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":344
  *             self.max_chunks = max_chunks
  * 
  *         if max_target_chunks is None:             # <<<<<<<<<<<<<<
@@ -39002,7 +39324,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_target_chunks == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":337
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":345
  * 
  *         if max_target_chunks is None:
  *             self.max_target_chunks = self.max_nonterminals + 1             # <<<<<<<<<<<<<<
@@ -39014,19 +39336,19 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":339
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
  *             self.max_target_chunks = self.max_nonterminals + 1
  *         else:
  *             self.max_target_chunks = max_target_chunks             # <<<<<<<<<<<<<<
  * 
  *         if max_target_length is None:
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 339; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 347; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_target_chunks = __pyx_t_4;
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":341
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
  *             self.max_target_chunks = max_target_chunks
  * 
  *         if max_target_length is None:             # <<<<<<<<<<<<<<
@@ -39036,7 +39358,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_target_length == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":342
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":350
  * 
  *         if max_target_length is None:
  *             self.max_target_length = max_initial_size             # <<<<<<<<<<<<<<
@@ -39048,26 +39370,26 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":344
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
  *             self.max_target_length = max_initial_size
  *         else:
  *             self.max_target_length = max_target_length             # <<<<<<<<<<<<<<
  * 
  *         # algorithmic parameters and settings
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_length); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 344; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_length); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 352; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_target_length = __pyx_t_4;
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":355
  * 
  *         # algorithmic parameters and settings
  *         self.precomputed_collocations = {}             # <<<<<<<<<<<<<<
  *         self.precomputed_index = {}
  *         self.use_index = use_index
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 347; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 355; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->precomputed_collocations);
@@ -39075,14 +39397,14 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->precomputed_collocations = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":348
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":356
  *         # algorithmic parameters and settings
  *         self.precomputed_collocations = {}
  *         self.precomputed_index = {}             # <<<<<<<<<<<<<<
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 348; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 356; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->precomputed_index);
@@ -39090,7 +39412,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->precomputed_index = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":357
  *         self.precomputed_collocations = {}
  *         self.precomputed_index = {}
  *         self.use_index = use_index             # <<<<<<<<<<<<<<
@@ -39099,7 +39421,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_index = __pyx_v_use_index;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":350
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":358
  *         self.precomputed_index = {}
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations             # <<<<<<<<<<<<<<
@@ -39108,14 +39430,14 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_collocations = __pyx_v_use_collocations;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":351
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":359
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations
  *         self.max_rank = {}             # <<<<<<<<<<<<<<
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 351; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 359; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->max_rank);
@@ -39123,7 +39445,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->max_rank = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":360
  *         self.use_collocations = use_collocations
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file             # <<<<<<<<<<<<<<
@@ -39136,7 +39458,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __Pyx_DECREF(__pyx_v_self->precompute_file);
   __pyx_v_self->precompute_file = __pyx_v_precompute_file;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":353
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":361
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank             # <<<<<<<<<<<<<<
@@ -39145,7 +39467,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->precompute_rank = __pyx_v_precompute_rank;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":354
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":362
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank             # <<<<<<<<<<<<<<
@@ -39154,7 +39476,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->precompute_secondary_rank = __pyx_v_precompute_secondary_rank;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":355
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":363
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates             # <<<<<<<<<<<<<<
@@ -39163,7 +39485,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_baeza_yates = __pyx_v_use_baeza_yates;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":356
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":364
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor             # <<<<<<<<<<<<<<
@@ -39172,7 +39494,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->by_slack_factor = __pyx_v_by_slack_factor;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":357
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":365
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor
  *         self.tight_phrases = tight_phrases             # <<<<<<<<<<<<<<
@@ -39181,7 +39503,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->tight_phrases = __pyx_v_tight_phrases;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":359
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":367
  *         self.tight_phrases = tight_phrases
  * 
  *         if require_aligned_chunks:             # <<<<<<<<<<<<<<
@@ -39190,7 +39512,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   if (__pyx_v_require_aligned_chunks) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":361
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":369
  *         if require_aligned_chunks:
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39202,7 +39524,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
     goto __pyx_L7;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":362
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":370
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -39211,7 +39533,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   if (__pyx_v_require_aligned_terminal) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":363
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":371
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False             # <<<<<<<<<<<<<<
@@ -39220,7 +39542,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
     __pyx_v_self->require_aligned_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":364
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":372
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False
  *             self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39232,7 +39554,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":366
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
  *             self.require_aligned_terminal = True
  *         else:
  *             self.require_aligned_chunks = self.require_aligned_terminal = False             # <<<<<<<<<<<<<<
@@ -39244,7 +39566,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":369
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":377
  * 
  *         # diagnostics
  *         self.prev_norm_prefix = ()             # <<<<<<<<<<<<<<
@@ -39257,17 +39579,17 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __Pyx_DECREF(__pyx_v_self->prev_norm_prefix);
   __pyx_v_self->prev_norm_prefix = ((PyObject *)__pyx_empty_tuple);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":371
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":379
  *         self.prev_norm_prefix = ()
  * 
  *         self.findexes = IntList(initial_len=10)             # <<<<<<<<<<<<<<
  *         self.findexes1 = IntList(initial_len=10)
  * 
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 371; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 371; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 371; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __Pyx_GIVEREF(__pyx_t_1);
@@ -39276,17 +39598,17 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->findexes = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":372
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":380
  * 
  *         self.findexes = IntList(initial_len=10)
  *         self.findexes1 = IntList(initial_len=10)             # <<<<<<<<<<<<<<
  * 
- *     def configure(self, SuffixArray fsarray, DataArray edarray,
+ *         # Online stats
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 372; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 380; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 372; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 372; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 380; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 380; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   __Pyx_GIVEREF(__pyx_t_2);
@@ -39295,11 +39617,184 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->findexes1 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
   __pyx_t_2 = 0;
 
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":385
+ * 
+ *         # Phrase counts
+ *         self.phrases_f = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.phrases_e = defaultdict(int)
+ *         self.phrases_fe = defaultdict(lambda: defaultdict(int))
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 385; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 385; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_5 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 385; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __Pyx_GIVEREF(__pyx_t_5);
+  __Pyx_GOTREF(__pyx_v_self->phrases_f);
+  __Pyx_DECREF(__pyx_v_self->phrases_f);
+  __pyx_v_self->phrases_f = __pyx_t_5;
+  __pyx_t_5 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":386
+ *         # Phrase counts
+ *         self.phrases_f = defaultdict(int)
+ *         self.phrases_e = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.phrases_fe = defaultdict(lambda: defaultdict(int))
+ *         self.phrases_al = defaultdict(dict)
+ */
+  __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 386; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 386; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_2 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 386; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __Pyx_GIVEREF(__pyx_t_2);
+  __Pyx_GOTREF(__pyx_v_self->phrases_e);
+  __Pyx_DECREF(__pyx_v_self->phrases_e);
+  __pyx_v_self->phrases_e = __pyx_t_2;
+  __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":387
+ *         self.phrases_f = defaultdict(int)
+ *         self.phrases_e = defaultdict(int)
+ *         self.phrases_fe = defaultdict(lambda: defaultdict(int))             # <<<<<<<<<<<<<<
+ *         self.phrases_al = defaultdict(dict)
+ * 
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_1 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  __pyx_t_1 = 0;
+  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 387; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+  __Pyx_GIVEREF(__pyx_t_1);
+  __Pyx_GOTREF(__pyx_v_self->phrases_fe);
+  __Pyx_DECREF(__pyx_v_self->phrases_fe);
+  __pyx_v_self->phrases_fe = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":388
+ *         self.phrases_e = defaultdict(int)
+ *         self.phrases_fe = defaultdict(lambda: defaultdict(int))
+ *         self.phrases_al = defaultdict(dict)             # <<<<<<<<<<<<<<
+ * 
+ *         # Bilexical counts
+ */
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 388; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 388; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyDict_Type))));
+  PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)((PyObject*)(&PyDict_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyDict_Type))));
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 388; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+  __Pyx_GIVEREF(__pyx_t_2);
+  __Pyx_GOTREF(__pyx_v_self->phrases_al);
+  __Pyx_DECREF(__pyx_v_self->phrases_al);
+  __pyx_v_self->phrases_al = __pyx_t_2;
+  __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":391
+ * 
+ *         # Bilexical counts
+ *         self.bilex_f = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.bilex_e = defaultdict(int)
+ *         self.bilex_fe = defaultdict(lambda: defaultdict(int))
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+  __Pyx_GIVEREF(__pyx_t_1);
+  __Pyx_GOTREF(__pyx_v_self->bilex_f);
+  __Pyx_DECREF(__pyx_v_self->bilex_f);
+  __pyx_v_self->bilex_f = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":392
+ *         # Bilexical counts
+ *         self.bilex_f = defaultdict(int)
+ *         self.bilex_e = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.bilex_fe = defaultdict(lambda: defaultdict(int))
+ * 
+ */
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __Pyx_INCREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)((PyObject*)(&PyInt_Type))));
+  __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyInt_Type))));
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+  __Pyx_GIVEREF(__pyx_t_2);
+  __Pyx_GOTREF(__pyx_v_self->bilex_e);
+  __Pyx_DECREF(__pyx_v_self->bilex_e);
+  __pyx_v_self->bilex_e = __pyx_t_2;
+  __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":393
+ *         self.bilex_f = defaultdict(int)
+ *         self.bilex_e = defaultdict(int)
+ *         self.bilex_fe = defaultdict(lambda: defaultdict(int))             # <<<<<<<<<<<<<<
+ * 
+ *     def configure(self, SuffixArray fsarray, DataArray edarray,
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_5 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_t_5);
+  __Pyx_GIVEREF(__pyx_t_5);
+  __pyx_t_5 = 0;
+  __pyx_t_5 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __Pyx_GIVEREF(__pyx_t_5);
+  __Pyx_GOTREF(__pyx_v_self->bilex_fe);
+  __Pyx_DECREF(__pyx_v_self->bilex_fe);
+  __pyx_v_self->bilex_fe = __pyx_t_5;
+  __pyx_t_5 = 0;
+
   __pyx_r = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_5);
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.__cinit__", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = -1;
   __pyx_L0:;
@@ -39340,21 +39835,21 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_3configure(PyObject *__
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__edarray)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__sampler)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  3:
         if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__scorer)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "configure") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "configure") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 4) {
       goto __pyx_L5_argtuple_error;
@@ -39371,16 +39866,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_3configure(PyObject *__
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.configure", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
   return NULL;
   __pyx_L4_argument_unpacking_done:;
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fsarray), __pyx_ptype_3_sa_SuffixArray, 1, "fsarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_edarray), __pyx_ptype_3_sa_DataArray, 1, "edarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 374; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_sampler), __pyx_ptype_3_sa_Sampler, 1, "sampler", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 375; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_scorer), __pyx_ptype_3_sa_Scorer, 1, "scorer", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 375; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fsarray), __pyx_ptype_3_sa_SuffixArray, 1, "fsarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_edarray), __pyx_ptype_3_sa_DataArray, 1, "edarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_sampler), __pyx_ptype_3_sa_Sampler, 1, "sampler", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_scorer), __pyx_ptype_3_sa_Scorer, 1, "scorer", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)__pyx_v_self), __pyx_v_fsarray, __pyx_v_edarray, __pyx_v_sampler, __pyx_v_scorer);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -39390,8 +39885,8 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_3configure(PyObject *__
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
- *         self.findexes1 = IntList(initial_len=10)
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":395
+ *         self.bilex_fe = defaultdict(lambda: defaultdict(int))
  * 
  *     def configure(self, SuffixArray fsarray, DataArray edarray,             # <<<<<<<<<<<<<<
  *             Sampler sampler, Scorer scorer):
@@ -39408,7 +39903,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("configure", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":379
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":400
  *         Here we also use it to precompute the most expensive intersections
  *         in the corpus quickly.'''
  *         self.fsa = fsarray             # <<<<<<<<<<<<<<
@@ -39421,7 +39916,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   __Pyx_DECREF(((PyObject *)__pyx_v_self->fsa));
   __pyx_v_self->fsa = __pyx_v_fsarray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":380
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":401
  *         in the corpus quickly.'''
  *         self.fsa = fsarray
  *         self.fda = fsarray.darray             # <<<<<<<<<<<<<<
@@ -39434,7 +39929,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   __Pyx_DECREF(((PyObject *)__pyx_v_self->fda));
   __pyx_v_self->fda = __pyx_v_fsarray->darray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":381
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":402
  *         self.fsa = fsarray
  *         self.fda = fsarray.darray
  *         self.eda = edarray             # <<<<<<<<<<<<<<
@@ -39447,7 +39942,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   __Pyx_DECREF(((PyObject *)__pyx_v_self->eda));
   __pyx_v_self->eda = __pyx_v_edarray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":382
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":403
  *         self.fda = fsarray.darray
  *         self.eda = edarray
  *         self.fid2symid = self.set_idmap(self.fda)             # <<<<<<<<<<<<<<
@@ -39456,17 +39951,17 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
  */
   __pyx_t_1 = ((PyObject *)__pyx_v_self->fda);
   __Pyx_INCREF(__pyx_t_1);
-  __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->set_idmap(__pyx_v_self, ((struct __pyx_obj_3_sa_DataArray *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 382; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->set_idmap(__pyx_v_self, ((struct __pyx_obj_3_sa_DataArray *)__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 403; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 382; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 403; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GIVEREF(__pyx_t_2);
   __Pyx_GOTREF(__pyx_v_self->fid2symid);
   __Pyx_DECREF(((PyObject *)__pyx_v_self->fid2symid));
   __pyx_v_self->fid2symid = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":383
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":404
  *         self.eda = edarray
  *         self.fid2symid = self.set_idmap(self.fda)
  *         self.eid2symid = self.set_idmap(self.eda)             # <<<<<<<<<<<<<<
@@ -39475,31 +39970,31 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
  */
   __pyx_t_2 = ((PyObject *)__pyx_v_self->eda);
   __Pyx_INCREF(__pyx_t_2);
-  __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->set_idmap(__pyx_v_self, ((struct __pyx_obj_3_sa_DataArray *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 383; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->set_idmap(__pyx_v_self, ((struct __pyx_obj_3_sa_DataArray *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 383; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GIVEREF(__pyx_t_1);
   __Pyx_GOTREF(__pyx_v_self->eid2symid);
   __Pyx_DECREF(((PyObject *)__pyx_v_self->eid2symid));
   __pyx_v_self->eid2symid = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":384
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":405
  *         self.fid2symid = self.set_idmap(self.fda)
  *         self.eid2symid = self.set_idmap(self.eda)
  *         self.precompute()             # <<<<<<<<<<<<<<
  *         self.sampler = sampler
  *         self.scorer = scorer
  */
-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__precompute); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 384; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__precompute); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 384; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":385
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":406
  *         self.eid2symid = self.set_idmap(self.eda)
  *         self.precompute()
  *         self.sampler = sampler             # <<<<<<<<<<<<<<
@@ -39512,7 +40007,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   __Pyx_DECREF(((PyObject *)__pyx_v_self->sampler));
   __pyx_v_self->sampler = __pyx_v_sampler;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":386
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":407
  *         self.precompute()
  *         self.sampler = sampler
  *         self.scorer = scorer             # <<<<<<<<<<<<<<
@@ -39538,7 +40033,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":388
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":409
  *         self.scorer = scorer
  * 
  *     cdef set_idmap(self, DataArray darray):             # <<<<<<<<<<<<<<
@@ -39563,7 +40058,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("set_idmap", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":392
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":413
  *         cdef IntList idmap
  * 
  *         N = len(darray.id2word)             # <<<<<<<<<<<<<<
@@ -39572,30 +40067,30 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
  */
   __pyx_t_1 = __pyx_v_darray->id2word;
   __Pyx_INCREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 413; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __pyx_v_N = __pyx_t_2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":393
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":414
  * 
  *         N = len(darray.id2word)
  *         idmap = IntList(initial_len=N)             # <<<<<<<<<<<<<<
  *         for word_id from 0 <= word_id < N:
  *             new_word_id = sym_fromstring(darray.id2word[word_id], True)
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 414; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_3 = PyInt_FromLong(__pyx_v_N); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyInt_FromLong(__pyx_v_N); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 414; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 414; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 393; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 414; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   __pyx_v_idmap = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_3);
   __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":394
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":415
  *         N = len(darray.id2word)
  *         idmap = IntList(initial_len=N)
  *         for word_id from 0 <= word_id < N:             # <<<<<<<<<<<<<<
@@ -39605,20 +40100,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
   __pyx_t_4 = __pyx_v_N;
   for (__pyx_v_word_id = 0; __pyx_v_word_id < __pyx_t_4; __pyx_v_word_id++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":395
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":416
  *         idmap = IntList(initial_len=N)
  *         for word_id from 0 <= word_id < N:
  *             new_word_id = sym_fromstring(darray.id2word[word_id], True)             # <<<<<<<<<<<<<<
  *             idmap.arr[word_id] = new_word_id
  *         return idmap
  */
-    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_darray->id2word, __pyx_v_word_id, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_darray->id2word, __pyx_v_word_id, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_5 = PyBytes_AsString(__pyx_t_3); if (unlikely((!__pyx_t_5) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyBytes_AsString(__pyx_t_3); if (unlikely((!__pyx_t_5) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __pyx_v_new_word_id = __pyx_f_3_sa_sym_fromstring(__pyx_t_5, 1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":396
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":417
  *         for word_id from 0 <= word_id < N:
  *             new_word_id = sym_fromstring(darray.id2word[word_id], True)
  *             idmap.arr[word_id] = new_word_id             # <<<<<<<<<<<<<<
@@ -39628,7 +40123,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
     (__pyx_v_idmap->arr[__pyx_v_word_id]) = __pyx_v_new_word_id;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":397
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":418
  *             new_word_id = sym_fromstring(darray.id2word[word_id], True)
  *             idmap.arr[word_id] = new_word_id
  *         return idmap             # <<<<<<<<<<<<<<
@@ -39665,7 +40160,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5pattern2phrase(PyObjec
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":400
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":421
  * 
  * 
  *     def pattern2phrase(self, pattern):             # <<<<<<<<<<<<<<
@@ -39693,7 +40188,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("pattern2phrase", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":402
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":423
  *     def pattern2phrase(self, pattern):
  *         # pattern is a tuple, which we must convert to a hiero Phrase
  *         result = ()             # <<<<<<<<<<<<<<
@@ -39703,7 +40198,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
   __Pyx_INCREF(((PyObject *)__pyx_empty_tuple));
   __pyx_v_result = __pyx_empty_tuple;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":403
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":424
  *         # pattern is a tuple, which we must convert to a hiero Phrase
  *         result = ()
  *         arity = 0             # <<<<<<<<<<<<<<
@@ -39713,7 +40208,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
   __Pyx_INCREF(__pyx_int_0);
   __pyx_v_arity = __pyx_int_0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":404
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":425
  *         result = ()
  *         arity = 0
  *         for word_id in pattern:             # <<<<<<<<<<<<<<
@@ -39724,7 +40219,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
     __pyx_t_1 = __pyx_v_pattern; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
     __pyx_t_3 = NULL;
   } else {
-    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
   }
@@ -39732,23 +40227,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 404; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -39758,74 +40253,74 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
     __pyx_v_word_id = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":405
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":426
  *         arity = 0
  *         for word_id in pattern:
  *             if word_id == -1:             # <<<<<<<<<<<<<<
  *                 arity = arity + 1
  *                 new_id = sym_setindex(self.category, arity)
  */
-    __pyx_t_4 = PyObject_RichCompare(__pyx_v_word_id, __pyx_int_neg_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_RichCompare(__pyx_v_word_id, __pyx_int_neg_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":406
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":427
  *         for word_id in pattern:
  *             if word_id == -1:
  *                 arity = arity + 1             # <<<<<<<<<<<<<<
  *                 new_id = sym_setindex(self.category, arity)
  *             else:
  */
-      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 406; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_v_arity);
       __pyx_v_arity = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":407
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":428
  *             if word_id == -1:
  *                 arity = arity + 1
  *                 new_id = sym_setindex(self.category, arity)             # <<<<<<<<<<<<<<
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  */
-      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 407; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_v_new_id = __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_6);
       goto __pyx_L5;
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":409
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":430
  *                 new_id = sym_setindex(self.category, arity)
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)             # <<<<<<<<<<<<<<
  *             result = result + (new_id,)
  *         return Phrase(result)
  */
-      __pyx_t_4 = PyObject_GetItem(__pyx_v_self->fda->id2word, __pyx_v_word_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 409; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetItem(__pyx_v_self->fda->id2word, __pyx_v_word_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 430; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_7 = PyBytes_AsString(__pyx_t_4); if (unlikely((!__pyx_t_7) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 409; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyBytes_AsString(__pyx_t_4); if (unlikely((!__pyx_t_7) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 430; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __pyx_v_new_id = __pyx_f_3_sa_sym_fromstring(__pyx_t_7, 1);
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":410
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":431
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  *             result = result + (new_id,)             # <<<<<<<<<<<<<<
  *         return Phrase(result)
  * 
  */
-    __pyx_t_4 = PyInt_FromLong(__pyx_v_new_id); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 410; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_v_new_id); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    __pyx_t_8 = PyTuple_New(1); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 410; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_8 = PyTuple_New(1); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_8);
     PyTuple_SET_ITEM(__pyx_t_8, 0, __pyx_t_4);
     __Pyx_GIVEREF(__pyx_t_4);
     __pyx_t_4 = 0;
-    __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_8)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 410; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_8)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_4));
     __Pyx_DECREF(((PyObject *)__pyx_t_8)); __pyx_t_8 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_v_result));
@@ -39834,7 +40329,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":411
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":432
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  *             result = result + (new_id,)
  *         return Phrase(result)             # <<<<<<<<<<<<<<
@@ -39842,12 +40337,12 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
  *     def pattern2phrase_plus(self, pattern):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 411; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_INCREF(((PyObject *)__pyx_v_result));
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_result));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_result));
-  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 411; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   __pyx_r = __pyx_t_4;
@@ -39882,7 +40377,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_7pattern2phrase_plus(Py
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":413
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":434
  *         return Phrase(result)
  * 
  *     def pattern2phrase_plus(self, pattern):             # <<<<<<<<<<<<<<
@@ -39912,19 +40407,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("pattern2phrase_plus", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":416
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":437
  *         # returns a list containing both the pattern, and pattern
  *         # suffixed/prefixed with the NT category.
  *         patterns = []             # <<<<<<<<<<<<<<
  *         result = ()
  *         arity = 0
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 437; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_patterns = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":417
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":438
  *         # suffixed/prefixed with the NT category.
  *         patterns = []
  *         result = ()             # <<<<<<<<<<<<<<
@@ -39934,7 +40429,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
   __Pyx_INCREF(((PyObject *)__pyx_empty_tuple));
   __pyx_v_result = __pyx_empty_tuple;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":418
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
  *         patterns = []
  *         result = ()
  *         arity = 0             # <<<<<<<<<<<<<<
@@ -39944,7 +40439,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
   __Pyx_INCREF(__pyx_int_0);
   __pyx_v_arity = __pyx_int_0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":419
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":440
  *         result = ()
  *         arity = 0
  *         for word_id in pattern:             # <<<<<<<<<<<<<<
@@ -39955,7 +40450,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
     __pyx_t_1 = __pyx_v_pattern; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
     __pyx_t_3 = NULL;
   } else {
-    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
   }
@@ -39963,23 +40458,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -39989,74 +40484,74 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
     __pyx_v_word_id = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":420
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
  *         arity = 0
  *         for word_id in pattern:
  *             if word_id == -1:             # <<<<<<<<<<<<<<
  *                 arity = arity + 1
  *                 new_id = sym_setindex(self.category, arity)
  */
-    __pyx_t_4 = PyObject_RichCompare(__pyx_v_word_id, __pyx_int_neg_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 420; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 420; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_RichCompare(__pyx_v_word_id, __pyx_int_neg_1, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 441; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 441; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":421
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
  *         for word_id in pattern:
  *             if word_id == -1:
  *                 arity = arity + 1             # <<<<<<<<<<<<<<
  *                 new_id = sym_setindex(self.category, arity)
  *             else:
  */
-      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 421; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_v_arity);
       __pyx_v_arity = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":422
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
  *             if word_id == -1:
  *                 arity = arity + 1
  *                 new_id = sym_setindex(self.category, arity)             # <<<<<<<<<<<<<<
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  */
-      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 422; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 443; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_v_new_id = __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_6);
       goto __pyx_L5;
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":424
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":445
  *                 new_id = sym_setindex(self.category, arity)
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)             # <<<<<<<<<<<<<<
  *             result = result + (new_id,)
  *         patterns.append(Phrase(result))
  */
-      __pyx_t_4 = PyObject_GetItem(__pyx_v_self->fda->id2word, __pyx_v_word_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 424; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetItem(__pyx_v_self->fda->id2word, __pyx_v_word_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 445; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_7 = PyBytes_AsString(__pyx_t_4); if (unlikely((!__pyx_t_7) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 424; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyBytes_AsString(__pyx_t_4); if (unlikely((!__pyx_t_7) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 445; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __pyx_v_new_id = __pyx_f_3_sa_sym_fromstring(__pyx_t_7, 1);
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":425
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":446
  *             else:
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  *             result = result + (new_id,)             # <<<<<<<<<<<<<<
  *         patterns.append(Phrase(result))
  *         patterns.append(Phrase(result + (sym_setindex(self.category, 1),)))
  */
-    __pyx_t_4 = PyInt_FromLong(__pyx_v_new_id); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_v_new_id); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    __pyx_t_8 = PyTuple_New(1); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_8 = PyTuple_New(1); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_8);
     PyTuple_SET_ITEM(__pyx_t_8, 0, __pyx_t_4);
     __Pyx_GIVEREF(__pyx_t_4);
     __pyx_t_4 = 0;
-    __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_8)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_8)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_4));
     __Pyx_DECREF(((PyObject *)__pyx_t_8)); __pyx_t_8 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_v_result));
@@ -40065,81 +40560,81 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_6pattern2phrase_plus(st
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":426
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":447
  *                 new_id = sym_fromstring(self.fda.id2word[word_id], True)
  *             result = result + (new_id,)
  *         patterns.append(Phrase(result))             # <<<<<<<<<<<<<<
  *         patterns.append(Phrase(result + (sym_setindex(self.category, 1),)))
  *         patterns.append(Phrase((sym_setindex(self.category, 1),) + result))
  */
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 447; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_INCREF(((PyObject *)__pyx_v_result));
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_result));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_result));
-  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 447; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 426; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 447; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":427
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":448
  *             result = result + (new_id,)
  *         patterns.append(Phrase(result))
  *         patterns.append(Phrase(result + (sym_setindex(self.category, 1),)))             # <<<<<<<<<<<<<<
  *         patterns.append(Phrase((sym_setindex(self.category, 1),) + result))
  *         return patterns
  */
-  __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_t_4);
   __Pyx_GIVEREF(__pyx_t_4);
   __pyx_t_4 = 0;
-  __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_v_result), ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_4));
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_t_4));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_4));
   __pyx_t_4 = 0;
-  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":428
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":449
  *         patterns.append(Phrase(result))
  *         patterns.append(Phrase(result + (sym_setindex(self.category, 1),)))
  *         patterns.append(Phrase((sym_setindex(self.category, 1),) + result))             # <<<<<<<<<<<<<<
  *         return patterns
  * 
  */
-  __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_t_4);
   __Pyx_GIVEREF(__pyx_t_4);
   __pyx_t_4 = 0;
-  __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_t_1), ((PyObject *)__pyx_v_result)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyNumber_Add(((PyObject *)__pyx_t_1), ((PyObject *)__pyx_v_result)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_4));
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_t_4));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_4));
   __pyx_t_4 = 0;
-  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 428; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_9 = PyList_Append(__pyx_v_patterns, __pyx_t_4); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":429
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
  *         patterns.append(Phrase(result + (sym_setindex(self.category, 1),)))
  *         patterns.append(Phrase((sym_setindex(self.category, 1),) + result))
  *         return patterns             # <<<<<<<<<<<<<<
@@ -40180,7 +40675,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9precompute(PyObject *_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":431
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":452
  *         return patterns
  * 
  *     def precompute(self):             # <<<<<<<<<<<<<<
@@ -40214,7 +40709,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("precompute", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":434
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":455
  *         cdef Precomputation pre
  * 
  *         if self.precompute_file is not None:             # <<<<<<<<<<<<<<
@@ -40224,31 +40719,31 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
   __pyx_t_1 = (__pyx_v_self->precompute_file != Py_None);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":435
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
  * 
  *         if self.precompute_file is not None:
  *             start_time = monitor_cpu()             # <<<<<<<<<<<<<<
  *             logger.info("Reading precomputed data from file %s... ", self.precompute_file)
  *             pre = Precomputation(from_binary=self.precompute_file)
  */
-    __pyx_t_2 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 435; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __pyx_v_start_time = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":436
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
  *         if self.precompute_file is not None:
  *             start_time = monitor_cpu()
  *             logger.info("Reading precomputed data from file %s... ", self.precompute_file)             # <<<<<<<<<<<<<<
  *             pre = Precomputation(from_binary=self.precompute_file)
  *             # check parameters of precomputation -- some are critical and some are not
  */
-    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 457; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 457; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 457; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_INCREF(((PyObject *)__pyx_kp_s_108));
     PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_108));
@@ -40256,29 +40751,29 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     __Pyx_INCREF(__pyx_v_self->precompute_file);
     PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_self->precompute_file);
     __Pyx_GIVEREF(__pyx_v_self->precompute_file);
-    __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 457; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":437
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":458
  *             start_time = monitor_cpu()
  *             logger.info("Reading precomputed data from file %s... ", self.precompute_file)
  *             pre = Precomputation(from_binary=self.precompute_file)             # <<<<<<<<<<<<<<
  *             # check parameters of precomputation -- some are critical and some are not
  *             if pre.max_nonterminals != self.max_nonterminals:
  */
-    __pyx_t_4 = PyDict_New(); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 437; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyDict_New(); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 458; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_4));
-    if (PyDict_SetItem(__pyx_t_4, ((PyObject *)__pyx_n_s__from_binary), __pyx_v_self->precompute_file) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 437; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Precomputation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 437; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_4, ((PyObject *)__pyx_n_s__from_binary), __pyx_v_self->precompute_file) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 458; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Precomputation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 458; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
     __pyx_v_pre = ((struct __pyx_obj_3_sa_Precomputation *)__pyx_t_2);
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":460
  *             pre = Precomputation(from_binary=self.precompute_file)
  *             # check parameters of precomputation -- some are critical and some are not
  *             if pre.max_nonterminals != self.max_nonterminals:             # <<<<<<<<<<<<<<
@@ -40288,23 +40783,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     __pyx_t_1 = (__pyx_v_pre->max_nonterminals != __pyx_v_self->max_nonterminals);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":440
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":461
  *             # check parameters of precomputation -- some are critical and some are not
  *             if pre.max_nonterminals != self.max_nonterminals:
  *                 logger.warn("Precomputation done with max nonterminals %d, decoder uses %d", pre.max_nonterminals, self.max_nonterminals)             # <<<<<<<<<<<<<<
  *             if pre.max_length != self.max_length:
  *                 logger.warn("Precomputation done with max terminals %d, decoder uses %d", pre.max_length, self.max_length)
  */
-      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__warn); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__warn); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->max_nonterminals); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->max_nonterminals); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_3 = PyInt_FromLong(__pyx_v_self->max_nonterminals); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyInt_FromLong(__pyx_v_self->max_nonterminals); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_INCREF(((PyObject *)__pyx_kp_s_109));
       PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)__pyx_kp_s_109));
@@ -40315,7 +40810,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __Pyx_GIVEREF(__pyx_t_3);
       __pyx_t_2 = 0;
       __pyx_t_3 = 0;
-      __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
@@ -40324,7 +40819,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     }
     __pyx_L4:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":462
  *             if pre.max_nonterminals != self.max_nonterminals:
  *                 logger.warn("Precomputation done with max nonterminals %d, decoder uses %d", pre.max_nonterminals, self.max_nonterminals)
  *             if pre.max_length != self.max_length:             # <<<<<<<<<<<<<<
@@ -40334,23 +40829,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     __pyx_t_1 = (__pyx_v_pre->max_length != __pyx_v_self->max_length);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":463
  *                 logger.warn("Precomputation done with max nonterminals %d, decoder uses %d", pre.max_nonterminals, self.max_nonterminals)
  *             if pre.max_length != self.max_length:
  *                 logger.warn("Precomputation done with max terminals %d, decoder uses %d", pre.max_length, self.max_length)             # <<<<<<<<<<<<<<
  *             if pre.train_max_initial_size != self.train_max_initial_size:
  *                 raise Exception("Precomputation done with max initial size %d, decoder uses %d" % (pre.train_max_initial_size, self.train_max_initial_size))
  */
-      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_5 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__warn); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__warn); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_3 = PyInt_FromLong(__pyx_v_pre->max_length); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyInt_FromLong(__pyx_v_pre->max_length); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_4 = PyInt_FromLong(__pyx_v_self->max_length); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyInt_FromLong(__pyx_v_self->max_length); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_INCREF(((PyObject *)__pyx_kp_s_110));
       PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_110));
@@ -40361,7 +40856,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __Pyx_GIVEREF(__pyx_t_4);
       __pyx_t_3 = 0;
       __pyx_t_4 = 0;
-      __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 442; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -40370,7 +40865,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":464
  *             if pre.max_length != self.max_length:
  *                 logger.warn("Precomputation done with max terminals %d, decoder uses %d", pre.max_length, self.max_length)
  *             if pre.train_max_initial_size != self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -40380,18 +40875,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     __pyx_t_1 = (__pyx_v_pre->train_max_initial_size != __pyx_v_self->train_max_initial_size);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":444
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":465
  *                 logger.warn("Precomputation done with max terminals %d, decoder uses %d", pre.max_length, self.max_length)
  *             if pre.train_max_initial_size != self.train_max_initial_size:
  *                 raise Exception("Precomputation done with max initial size %d, decoder uses %d" % (pre.train_max_initial_size, self.train_max_initial_size))             # <<<<<<<<<<<<<<
  *             if pre.train_min_gap_size != self.train_min_gap_size:
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))
  */
-      __pyx_t_4 = PyInt_FromLong(__pyx_v_pre->train_max_initial_size); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyInt_FromLong(__pyx_v_pre->train_max_initial_size); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_self->train_max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_self->train_max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_4);
       __Pyx_GIVEREF(__pyx_t_4);
@@ -40399,25 +40894,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __Pyx_GIVEREF(__pyx_t_2);
       __pyx_t_4 = 0;
       __pyx_t_2 = 0;
-      __pyx_t_2 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_111), ((PyObject *)__pyx_t_5)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_111), ((PyObject *)__pyx_t_5)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_2));
       __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
-      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)__pyx_t_2));
       __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
       __pyx_t_2 = 0;
-      __pyx_t_2 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
       __Pyx_Raise(__pyx_t_2, 0, 0, 0);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       goto __pyx_L6;
     }
     __pyx_L6:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":445
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":466
  *             if pre.train_max_initial_size != self.train_max_initial_size:
  *                 raise Exception("Precomputation done with max initial size %d, decoder uses %d" % (pre.train_max_initial_size, self.train_max_initial_size))
  *             if pre.train_min_gap_size != self.train_min_gap_size:             # <<<<<<<<<<<<<<
@@ -40427,18 +40922,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     __pyx_t_1 = (__pyx_v_pre->train_min_gap_size != __pyx_v_self->train_min_gap_size);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":446
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":467
  *                 raise Exception("Precomputation done with max initial size %d, decoder uses %d" % (pre.train_max_initial_size, self.train_max_initial_size))
  *             if pre.train_min_gap_size != self.train_min_gap_size:
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))             # <<<<<<<<<<<<<<
  *             if self.use_index:
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
  */
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->train_min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->train_min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_5 = PyInt_FromLong(__pyx_v_self->train_min_gap_size); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyInt_FromLong(__pyx_v_self->train_min_gap_size); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_2);
       __Pyx_GIVEREF(__pyx_t_2);
@@ -40446,25 +40941,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __Pyx_GIVEREF(__pyx_t_5);
       __pyx_t_2 = 0;
       __pyx_t_5 = 0;
-      __pyx_t_5 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_112), ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_112), ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_5));
       __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
-      __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       PyTuple_SET_ITEM(__pyx_t_4, 0, ((PyObject *)__pyx_t_5));
       __Pyx_GIVEREF(((PyObject *)__pyx_t_5));
       __pyx_t_5 = 0;
-      __pyx_t_5 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
       __Pyx_Raise(__pyx_t_5, 0, 0, 0);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       goto __pyx_L7;
     }
     __pyx_L7:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":447
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":468
  *             if pre.train_min_gap_size != self.train_min_gap_size:
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))
  *             if self.use_index:             # <<<<<<<<<<<<<<
@@ -40473,25 +40968,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
  */
     if (__pyx_v_self->use_index) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":448
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":469
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))
  *             if self.use_index:
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))             # <<<<<<<<<<<<<<
  *                 for pattern, arr in pre.precomputed_index.iteritems():
  *                     phrases = self.pattern2phrase_plus(pattern)
  */
-      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       __pyx_t_5 = __pyx_v_pre->precomputed_index;
       __Pyx_INCREF(__pyx_t_5);
-      __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_6); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_6); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_INCREF(((PyObject *)__pyx_kp_s_113));
       PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_113));
@@ -40499,13 +40994,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_5);
       __Pyx_GIVEREF(__pyx_t_5);
       __pyx_t_5 = 0;
-      __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":449
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":470
  *             if self.use_index:
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
  *                 for pattern, arr in pre.precomputed_index.iteritems():             # <<<<<<<<<<<<<<
@@ -40515,9 +41010,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __pyx_t_6 = 0;
       if (unlikely(__pyx_v_pre->precomputed_index == Py_None)) {
         PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
-      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_index, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_7), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_index, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_7), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_XDECREF(__pyx_t_5);
       __pyx_t_5 = __pyx_t_2;
@@ -40525,7 +41020,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       while (1) {
         __pyx_t_9 = __Pyx_dict_iter_next(__pyx_t_5, __pyx_t_7, &__pyx_t_6, &__pyx_t_2, &__pyx_t_4, NULL, __pyx_t_8);
         if (unlikely(__pyx_t_9 == 0)) break;
-        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_GOTREF(__pyx_t_4);
         __Pyx_XDECREF(__pyx_v_pattern);
@@ -40535,21 +41030,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_arr = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":471
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
  *                 for pattern, arr in pre.precomputed_index.iteritems():
  *                     phrases = self.pattern2phrase_plus(pattern)             # <<<<<<<<<<<<<<
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr
  */
-        __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase_plus); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase_plus); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(__pyx_v_pattern);
         PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_pattern);
         __Pyx_GIVEREF(__pyx_v_pattern);
-        __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -40557,7 +41052,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_phrases = __pyx_t_3;
         __pyx_t_3 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":451
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":472
  *                 for pattern, arr in pre.precomputed_index.iteritems():
  *                     phrases = self.pattern2phrase_plus(pattern)
  *                     for phrase in phrases:             # <<<<<<<<<<<<<<
@@ -40568,7 +41063,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
           __pyx_t_3 = __pyx_v_phrases; __Pyx_INCREF(__pyx_t_3); __pyx_t_10 = 0;
           __pyx_t_11 = NULL;
         } else {
-          __pyx_t_10 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_phrases); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_phrases); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __pyx_t_11 = Py_TYPE(__pyx_t_3)->tp_iternext;
         }
@@ -40576,23 +41071,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
           if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_3)) {
             if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_3)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_3)) {
             if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else {
             __pyx_t_2 = __pyx_t_11(__pyx_t_3);
             if (unlikely(!__pyx_t_2)) {
               if (PyErr_Occurred()) {
                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 451; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               break;
             }
@@ -40602,14 +41097,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
           __pyx_v_phrase = __pyx_t_2;
           __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":452
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":473
  *                     phrases = self.pattern2phrase_plus(pattern)
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr             # <<<<<<<<<<<<<<
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  */
-          if (PyObject_SetItem(__pyx_v_self->precomputed_index, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 452; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyObject_SetItem(__pyx_v_self->precomputed_index, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 473; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
       }
@@ -40618,7 +41113,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     }
     __pyx_L8:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":453
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":474
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr
  *             if self.use_collocations:             # <<<<<<<<<<<<<<
@@ -40627,25 +41122,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
  */
     if (__pyx_v_self->use_collocations) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":454
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":475
  *                         self.precomputed_index[phrase] = arr
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))             # <<<<<<<<<<<<<<
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)
  */
-      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_3 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       __pyx_t_5 = __pyx_v_pre->precomputed_collocations;
       __Pyx_INCREF(__pyx_t_5);
-      __pyx_t_7 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_INCREF(((PyObject *)__pyx_kp_s_114));
       PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_114));
@@ -40653,13 +41148,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_5);
       __Pyx_GIVEREF(__pyx_t_5);
       __pyx_t_5 = 0;
-      __pyx_t_5 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 454; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":455
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":476
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():             # <<<<<<<<<<<<<<
@@ -40669,9 +41164,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       __pyx_t_7 = 0;
       if (unlikely(__pyx_v_pre->precomputed_collocations == Py_None)) {
         PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
-      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_collocations, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_6), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_collocations, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_6), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_XDECREF(__pyx_t_5);
       __pyx_t_5 = __pyx_t_2;
@@ -40679,7 +41174,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
       while (1) {
         __pyx_t_9 = __Pyx_dict_iter_next(__pyx_t_5, __pyx_t_6, &__pyx_t_7, &__pyx_t_2, &__pyx_t_3, NULL, __pyx_t_8);
         if (unlikely(__pyx_t_9 == 0)) break;
-        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_XDECREF(__pyx_v_pattern);
@@ -40689,21 +41184,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_arr = __pyx_t_3;
         __pyx_t_3 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":477
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)             # <<<<<<<<<<<<<<
  *                     self.precomputed_collocations[phrase] = arr
  *             stop_time = monitor_cpu()
  */
-        __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 477; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 477; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(__pyx_v_pattern);
         PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_pattern);
         __Pyx_GIVEREF(__pyx_v_pattern);
-        __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 477; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -40711,47 +41206,47 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_phrase = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":478
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)
  *                     self.precomputed_collocations[phrase] = arr             # <<<<<<<<<<<<<<
  *             stop_time = monitor_cpu()
  *             logger.info("Processing precomputations took %f seconds", stop_time - start_time)
  */
-        if (PyObject_SetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 457; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (PyObject_SetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 478; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       goto __pyx_L13;
     }
     __pyx_L13:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":458
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":479
  *                     phrase = self.pattern2phrase(pattern)
  *                     self.precomputed_collocations[phrase] = arr
  *             stop_time = monitor_cpu()             # <<<<<<<<<<<<<<
  *             logger.info("Processing precomputations took %f seconds", stop_time - start_time)
  * 
  */
-    __pyx_t_5 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 458; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __pyx_v_stop_time = __pyx_t_5;
     __pyx_t_5 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":459
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":480
  *                     self.precomputed_collocations[phrase] = arr
  *             stop_time = monitor_cpu()
  *             logger.info("Processing precomputations took %f seconds", stop_time - start_time)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-    __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 459; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 459; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_t_5 = PyNumber_Subtract(__pyx_v_stop_time, __pyx_v_start_time); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 459; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyNumber_Subtract(__pyx_v_stop_time, __pyx_v_start_time); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 459; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_INCREF(((PyObject *)__pyx_kp_s_115));
     PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_115));
@@ -40759,7 +41254,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_5);
     __Pyx_GIVEREF(__pyx_t_5);
     __pyx_t_5 = 0;
-    __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 459; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -40801,7 +41296,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_11get_precomputed_collo
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":462
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":483
  * 
  * 
  *     def get_precomputed_collocation(self, phrase):             # <<<<<<<<<<<<<<
@@ -40823,29 +41318,29 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("get_precomputed_collocation", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":463
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
  * 
  *     def get_precomputed_collocation(self, phrase):
  *         if phrase in self.precomputed_collocations:             # <<<<<<<<<<<<<<
  *             arr = self.precomputed_collocations[phrase]
  *             return PhraseLocation(arr=arr, arr_low=0, arr_high=len(arr), num_subpatterns=phrase.arity()+1)
  */
-  __pyx_t_1 = (__Pyx_PySequence_Contains(__pyx_v_phrase, __pyx_v_self->precomputed_collocations, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = (__Pyx_PySequence_Contains(__pyx_v_phrase, __pyx_v_self->precomputed_collocations, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 484; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":464
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
  *     def get_precomputed_collocation(self, phrase):
  *         if phrase in self.precomputed_collocations:
  *             arr = self.precomputed_collocations[phrase]             # <<<<<<<<<<<<<<
  *             return PhraseLocation(arr=arr, arr_low=0, arr_high=len(arr), num_subpatterns=phrase.arity()+1)
  *         return None
  */
-    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 464; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __pyx_v_arr = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":465
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":486
  *         if phrase in self.precomputed_collocations:
  *             arr = self.precomputed_collocations[phrase]
  *             return PhraseLocation(arr=arr, arr_low=0, arr_high=len(arr), num_subpatterns=phrase.arity()+1)             # <<<<<<<<<<<<<<
@@ -40853,26 +41348,26 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
  * 
  */
     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr), __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr_low), __pyx_int_0) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_3 = PyObject_Length(__pyx_v_arr); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_4 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr), __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr_low), __pyx_int_0) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Length(__pyx_v_arr); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr_high), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr_high), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = PyObject_GetAttr(__pyx_v_phrase, __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetAttr(__pyx_v_phrase, __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = PyNumber_Add(__pyx_t_5, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyNumber_Add(__pyx_t_5, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __pyx_r = __pyx_t_4;
@@ -40882,7 +41377,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":466
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":487
  *             arr = self.precomputed_collocations[phrase]
  *             return PhraseLocation(arr=arr, arr_low=0, arr_high=len(arr), num_subpatterns=phrase.arity()+1)
  *         return None             # <<<<<<<<<<<<<<
@@ -40909,7 +41404,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":469
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
  * 
  * 
  *     cdef int* baeza_yates_helper(self, int low1, int high1, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -40955,7 +41450,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("baeza_yates_helper", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":482
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":503
  *         cdef Matching loc1, loc2
  * 
  *         result = <int*> malloc(0*sizeof(int*))             # <<<<<<<<<<<<<<
@@ -40964,7 +41459,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = ((int *)malloc((0 * (sizeof(int *)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":505
  *         result = <int*> malloc(0*sizeof(int*))
  * 
  *         d_first = 0             # <<<<<<<<<<<<<<
@@ -40973,7 +41468,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_d_first = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":506
  * 
  *         d_first = 0
  *         if high1 - low1 > high2 - low2:             # <<<<<<<<<<<<<<
@@ -40983,7 +41478,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_1 = ((__pyx_v_high1 - __pyx_v_low1) > (__pyx_v_high2 - __pyx_v_low2));
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":486
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":507
  *         d_first = 0
  *         if high1 - low1 > high2 - low2:
  *             d_first = 1             # <<<<<<<<<<<<<<
@@ -40995,7 +41490,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":511
  *         # First, check to see if we are at any of the recursive base cases
  *         # Case 1: one of the sets is empty
  *         if low1 >= high1 or low2 >= high2:             # <<<<<<<<<<<<<<
@@ -41011,7 +41506,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":491
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":512
  *         # Case 1: one of the sets is empty
  *         if low1 >= high1 or low2 >= high2:
  *             return result             # <<<<<<<<<<<<<<
@@ -41024,7 +41519,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":494
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":515
  * 
  *         # Case 2: sets are non-overlapping
  *         assign_matching(&loc1, arr1, high1-step1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41033,7 +41528,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, (__pyx_v_high1 - __pyx_v_step1), __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":495
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":516
  *         # Case 2: sets are non-overlapping
  *         assign_matching(&loc1, arr1, high1-step1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, low2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41042,7 +41537,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_low2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":496
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":517
  *         assign_matching(&loc1, arr1, high1-step1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, low2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == -1:             # <<<<<<<<<<<<<<
@@ -41052,7 +41547,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) == -1);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":497
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":518
  *         assign_matching(&loc2, arr2, low2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == -1:
  *             return result             # <<<<<<<<<<<<<<
@@ -41065,7 +41560,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":499
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":520
  *             return result
  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41074,7 +41569,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_low1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":500
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":521
  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41083,7 +41578,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, (__pyx_v_high2 - __pyx_v_step2), __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":501
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":522
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:             # <<<<<<<<<<<<<<
@@ -41093,7 +41588,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) == 1);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":502
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":523
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:
  *             return result             # <<<<<<<<<<<<<<
@@ -41106,7 +41601,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":506
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":527
  *         # Case 3: query set and data set do not meet size mismatch constraints;
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1             # <<<<<<<<<<<<<<
@@ -41116,15 +41611,15 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_4 = (__pyx_v_high1 - __pyx_v_low1);
   if (unlikely(__pyx_v_step1 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 506; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step1 == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_4))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 506; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_v_qsetsize = __Pyx_div_int(__pyx_t_4, __pyx_v_step1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":507
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":528
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2             # <<<<<<<<<<<<<<
@@ -41134,15 +41629,15 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_4 = (__pyx_v_high2 - __pyx_v_low2);
   if (unlikely(__pyx_v_step2 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 507; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step2 == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_4))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 507; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_v_dsetsize = __Pyx_div_int(__pyx_t_4, __pyx_v_step2);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":508
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":529
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41151,7 +41646,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   if (__pyx_v_d_first) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":509
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":530
  *         dsetsize = (high2-low2) / step2
  *         if d_first:
  *             tmp = qsetsize             # <<<<<<<<<<<<<<
@@ -41160,7 +41655,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_tmp = __pyx_v_qsetsize;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":510
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":531
  *         if d_first:
  *             tmp = qsetsize
  *             qsetsize = dsetsize             # <<<<<<<<<<<<<<
@@ -41169,7 +41664,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_qsetsize = __pyx_v_dsetsize;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":511
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":532
  *             tmp = qsetsize
  *             qsetsize = dsetsize
  *             dsetsize = tmp             # <<<<<<<<<<<<<<
@@ -41181,7 +41676,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":513
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
  *             dsetsize = tmp
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:             # <<<<<<<<<<<<<<
@@ -41192,12 +41687,12 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_6 = log(2.0);
   if (unlikely(__pyx_t_6 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "float division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 513; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 534; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_t_3 = ((__pyx_t_5 / __pyx_t_6) > __pyx_v_dsetsize);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":514
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":535
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:
  *             free(result)             # <<<<<<<<<<<<<<
@@ -41206,7 +41701,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     free(__pyx_v_result);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":515
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":536
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:
  *             free(result)
  *             return self.merge_helper(low1, high1, arr1, step1, low2, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, result_len)             # <<<<<<<<<<<<<<
@@ -41219,7 +41714,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L8:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":519
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
  *         # binary search.    There are two flavors, depending on
  *         # whether the queryset or dataset is first
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41228,7 +41723,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   if (__pyx_v_d_first) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":520
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":541
  *         # whether the queryset or dataset is first
  *         if d_first:
  *             med2 = median(low2, high2, step2)             # <<<<<<<<<<<<<<
@@ -41237,7 +41732,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2 = __pyx_f_3_sa_median(__pyx_v_low2, __pyx_v_high2, __pyx_v_step2);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":521
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":542
  *         if d_first:
  *             med2 = median(low2, high2, step2)
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41246,7 +41741,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_med2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":523
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":544
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  * 
  *             search_low = low1             # <<<<<<<<<<<<<<
@@ -41255,7 +41750,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_low = __pyx_v_low1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":524
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":545
  * 
  *             search_low = low1
  *             search_high = high1             # <<<<<<<<<<<<<<
@@ -41264,7 +41759,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_high = __pyx_v_high1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":525
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":546
  *             search_low = low1
  *             search_high = high1
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41275,7 +41770,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_search_low < __pyx_v_search_high);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":526
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
  *             search_high = high1
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)             # <<<<<<<<<<<<<<
@@ -41284,7 +41779,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1 = __pyx_f_3_sa_median(__pyx_v_search_low, __pyx_v_search_high, __pyx_v_step1);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":527
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":548
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41293,7 +41788,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_find_comparable_matchings(__pyx_v_low1, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med1, (&__pyx_v_med1_minus), (&__pyx_v_med1_plus));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":528
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":549
  *                 med1 = median(search_low, search_high, step1)
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -41302,7 +41797,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings_set(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":531
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41311,7 +41806,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       switch (__pyx_v_comparison) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":529
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":550
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -41320,7 +41815,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":530
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":551
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_low = med1_plus             # <<<<<<<<<<<<<<
@@ -41330,7 +41825,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_v_search_low = __pyx_v_med1_plus;
         break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":531
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41339,7 +41834,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":532
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
  *                     search_low = med1_plus
  *                 elif comparison == 1:
  *                     search_high = med1_minus             # <<<<<<<<<<<<<<
@@ -41350,7 +41845,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":555
  *                     search_high = med1_minus
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -41366,7 +41861,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":536
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":557
  *                     break
  *         else:
  *             med1 = median(low1, high1, step1)             # <<<<<<<<<<<<<<
@@ -41375,7 +41870,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med1 = __pyx_f_3_sa_median(__pyx_v_low1, __pyx_v_high1, __pyx_v_step1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":537
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":558
  *         else:
  *             med1 = median(low1, high1, step1)
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41384,7 +41879,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_f_3_sa_find_comparable_matchings(__pyx_v_low1, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med1, (&__pyx_v_med1_minus), (&__pyx_v_med1_plus));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":539
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":560
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  * 
  *             search_low = low2             # <<<<<<<<<<<<<<
@@ -41393,7 +41888,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_low = __pyx_v_low2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":561
  * 
  *             search_low = low2
  *             search_high = high2             # <<<<<<<<<<<<<<
@@ -41402,7 +41897,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_high = __pyx_v_high2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":541
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":562
  *             search_low = low2
  *             search_high = high2
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41413,7 +41908,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_search_low < __pyx_v_search_high);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":542
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":563
  *             search_high = high2
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)             # <<<<<<<<<<<<<<
@@ -41422,7 +41917,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med2 = __pyx_f_3_sa_median(__pyx_v_search_low, __pyx_v_search_high, __pyx_v_step2);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":543
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":564
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41431,7 +41926,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_med2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":544
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":565
  *                 med2 = median(search_low, search_high, step2)
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -41440,7 +41935,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings_set(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41449,7 +41944,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       switch (__pyx_v_comparison) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":545
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":566
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -41458,7 +41953,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":546
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_high = med2             # <<<<<<<<<<<<<<
@@ -41468,7 +41963,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_v_search_high = __pyx_v_med2;
         break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41477,7 +41972,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":548
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":569
  *                     search_high = med2
  *                 elif comparison == 1:
  *                     search_low = med2 + step2             # <<<<<<<<<<<<<<
@@ -41488,7 +41983,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":550
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
  *                     search_low = med2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -41503,7 +41998,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L9:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
  *                     break
  * 
  *         med_result_len = 0             # <<<<<<<<<<<<<<
@@ -41512,7 +42007,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_med_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":574
  * 
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))             # <<<<<<<<<<<<<<
@@ -41521,7 +42016,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_med_result = ((int *)malloc((0 * (sizeof(int *)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":554
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":575
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))
  *         if search_high > search_low:             # <<<<<<<<<<<<<<
@@ -41531,7 +42026,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_3 = (__pyx_v_search_high > __pyx_v_search_low);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":560
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":581
  *             # want to store the bindings for all of those elements.    We can
  *             # subsequently throw all of them away.
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -41540,7 +42035,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_minus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":561
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":582
  *             # subsequently throw all of them away.
  *             med2_minus = med2
  *             med2_plus = med2 + step2             # <<<<<<<<<<<<<<
@@ -41549,7 +42044,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_plus = (__pyx_v_med2 + __pyx_v_step2);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":562
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":583
  *             med2_minus = med2
  *             med2_plus = med2 + step2
  *             i1 = med1_minus             # <<<<<<<<<<<<<<
@@ -41558,7 +42053,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_i1 = __pyx_v_med1_minus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":563
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":584
  *             med2_plus = med2 + step2
  *             i1 = med1_minus
  *             while i1 < med1_plus:             # <<<<<<<<<<<<<<
@@ -41569,7 +42064,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_i1 < __pyx_v_med1_plus);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":564
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":585
  *             i1 = med1_minus
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41578,7 +42073,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":565
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 while med2_minus-step2 >= low2:             # <<<<<<<<<<<<<<
@@ -41589,7 +42084,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = ((__pyx_v_med2_minus - __pyx_v_step2) >= __pyx_v_low2);
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":566
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":587
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 while med2_minus-step2 >= low2:
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41598,7 +42093,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, (__pyx_v_med2_minus - __pyx_v_step2), __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":588
  *                 while med2_minus-step2 >= low2:
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)
  *                     if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) < 1:             # <<<<<<<<<<<<<<
@@ -41608,7 +42103,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) < 1);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":589
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)
  *                     if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) < 1:
  *                         med2_minus = med2_minus - step2             # <<<<<<<<<<<<<<
@@ -41620,7 +42115,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":570
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
  *                         med2_minus = med2_minus - step2
  *                     else:
  *                         break             # <<<<<<<<<<<<<<
@@ -41633,7 +42128,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L18_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
  *                     else:
  *                         break
  *                 i2 = med2_minus             # <<<<<<<<<<<<<<
@@ -41642,7 +42137,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_i2 = __pyx_v_med2_minus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":572
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":593
  *                         break
  *                 i2 = med2_minus
  *                 while i2 < high2:             # <<<<<<<<<<<<<<
@@ -41653,7 +42148,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_i2 < __pyx_v_high2);
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":594
  *                 i2 = med2_minus
  *                 while i2 < high2:
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41662,7 +42157,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_i2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":574
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":595
  *                 while i2 < high2:
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -41671,7 +42166,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":575
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":596
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:             # <<<<<<<<<<<<<<
@@ -41681,7 +42176,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_comparison == 0);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":577
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":598
  *                     if comparison == 0:
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)             # <<<<<<<<<<<<<<
@@ -41693,7 +42188,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":578
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -41703,7 +42198,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_comparison == -1);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":579
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":600
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -41715,7 +42210,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L23:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":580
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
  *                     if comparison == -1:
  *                         break
  *                     i2 = i2 + step2             # <<<<<<<<<<<<<<
@@ -41726,7 +42221,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L21_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":581
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
  *                         break
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:             # <<<<<<<<<<<<<<
@@ -41736,7 +42231,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_i2 > __pyx_v_med2_plus);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":582
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":603
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:
  *                     med2_plus = i2             # <<<<<<<<<<<<<<
@@ -41748,7 +42243,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L24:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":583
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
  *                 if i2 > med2_plus:
  *                     med2_plus = i2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -41758,7 +42253,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_v_i1 = (__pyx_v_i1 + __pyx_v_step1);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":585
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":606
  *                 i1 = i1 + step1
  * 
  *             tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -41767,7 +42262,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_tmp = __pyx_v_med1_minus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":607
  * 
  *             tmp = med1_minus
  *             med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -41776,7 +42271,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med1_minus = __pyx_v_med1_plus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":587
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":608
  *             tmp = med1_minus
  *             med1_minus = med1_plus
  *             med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -41788,7 +42283,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":590
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
  *         else:
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -41797,7 +42292,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_minus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":612
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2
  *             med2_plus = med2             # <<<<<<<<<<<<<<
@@ -41806,7 +42301,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_plus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":613
  *             med2_minus = med2
  *             med2_plus = med2
  *             if d_first:             # <<<<<<<<<<<<<<
@@ -41815,7 +42310,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     if (__pyx_v_d_first) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":593
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":614
  *             med2_plus = med2
  *             if d_first:
  *                 med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -41824,7 +42319,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med2_minus = (__pyx_v_med2_minus + __pyx_v_step2);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":594
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":615
  *             if d_first:
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -41834,7 +42329,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == -1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":595
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":616
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:
  *                     med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -41846,7 +42341,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L26:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":596
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":617
  *                 if comparison == -1:
  *                     med1_minus = med1_plus
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -41856,7 +42351,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":597
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":618
  *                     med1_minus = med1_plus
  *                 if comparison == 1:
  *                     med1_plus = med1_minus             # <<<<<<<<<<<<<<
@@ -41871,7 +42366,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":620
  *                     med1_plus = med1_minus
  *             else:
  *                 tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -41880,7 +42375,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_tmp = __pyx_v_med1_minus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":600
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":621
  *             else:
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -41889,7 +42384,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1_minus = __pyx_v_med1_plus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":622
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -41898,7 +42393,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1_plus = __pyx_v_tmp;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":623
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -41908,7 +42403,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":603
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":624
  *                 med1_plus = tmp
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -41917,7 +42412,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_v_med2_minus = (__pyx_v_med2_minus + __pyx_v_step2);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":625
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2
  *                     med2_plus = med2_plus + step2             # <<<<<<<<<<<<<<
@@ -41933,7 +42428,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L14:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":606
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":627
  *                     med2_plus = med2_plus + step2
  * 
  *         low_result_len = 0             # <<<<<<<<<<<<<<
@@ -41942,7 +42437,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_low_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":607
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":628
  * 
  *         low_result_len = 0
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)             # <<<<<<<<<<<<<<
@@ -41951,7 +42446,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_low_result = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->baeza_yates_helper(__pyx_v_self, __pyx_v_low1, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, __pyx_v_low2, __pyx_v_med2_plus, __pyx_v_arr2, __pyx_v_step2, __pyx_v_offset_by_one, __pyx_v_len_last, __pyx_v_num_subpatterns, (&__pyx_v_low_result_len));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":608
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":629
  *         low_result_len = 0
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)
  *         high_result_len = 0             # <<<<<<<<<<<<<<
@@ -41960,7 +42455,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_high_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":609
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":630
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)
  *         high_result_len = 0
  *         high_result = self.baeza_yates_helper(med1_minus, high1, arr1, step1, med2_minus, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, &high_result_len)             # <<<<<<<<<<<<<<
@@ -41969,7 +42464,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_high_result = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->baeza_yates_helper(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med2_minus, __pyx_v_high2, __pyx_v_arr2, __pyx_v_step2, __pyx_v_offset_by_one, __pyx_v_len_last, __pyx_v_num_subpatterns, (&__pyx_v_high_result_len));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":632
  *         high_result = self.baeza_yates_helper(med1_minus, high1, arr1, step1, med2_minus, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, &high_result_len)
  * 
  *         result = extend_arr(result, result_len, low_result, low_result_len)             # <<<<<<<<<<<<<<
@@ -41978,7 +42473,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_low_result, __pyx_v_low_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":612
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":633
  * 
  *         result = extend_arr(result, result_len, low_result, low_result_len)
  *         result = extend_arr(result, result_len, med_result, med_result_len)             # <<<<<<<<<<<<<<
@@ -41987,7 +42482,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_med_result, __pyx_v_med_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":613
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":634
  *         result = extend_arr(result, result_len, low_result, low_result_len)
  *         result = extend_arr(result, result_len, med_result, med_result_len)
  *         result = extend_arr(result, result_len, high_result, high_result_len)             # <<<<<<<<<<<<<<
@@ -41996,7 +42491,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_high_result, __pyx_v_high_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":614
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":635
  *         result = extend_arr(result, result_len, med_result, med_result_len)
  *         result = extend_arr(result, result_len, high_result, high_result_len)
  *         free(low_result)             # <<<<<<<<<<<<<<
@@ -42005,7 +42500,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_low_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":615
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":636
  *         result = extend_arr(result, result_len, high_result, high_result_len)
  *         free(low_result)
  *         free(med_result)             # <<<<<<<<<<<<<<
@@ -42014,7 +42509,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_med_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":616
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":637
  *         free(low_result)
  *         free(med_result)
  *         free(high_result)             # <<<<<<<<<<<<<<
@@ -42023,7 +42518,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_high_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":618
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":639
  *         free(high_result)
  * 
  *         return result             # <<<<<<<<<<<<<<
@@ -42043,7 +42538,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":622
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
  * 
  * 
  *     cdef long compare_matchings_set(self, int i1_minus, int i1_plus, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -42062,7 +42557,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("compare_matchings_set", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":633
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":654
  *         cdef Matching* loc1
  * 
  *         loc1 = &l1_stack             # <<<<<<<<<<<<<<
@@ -42071,7 +42566,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
   __pyx_v_loc1 = (&__pyx_v_l1_stack);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":635
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":656
  *         loc1 = &l1_stack
  * 
  *         i1 = i1_minus             # <<<<<<<<<<<<<<
@@ -42080,7 +42575,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
   __pyx_v_i1 = __pyx_v_i1_minus;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":636
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":657
  * 
  *         i1 = i1_minus
  *         while i1 < i1_plus:             # <<<<<<<<<<<<<<
@@ -42091,7 +42586,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_i1 < __pyx_v_i1_plus);
     if (!__pyx_t_1) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":637
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":658
  *         i1 = i1_minus
  *         while i1 < i1_plus:
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42100,7 +42595,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
     __pyx_f_3_sa_assign_matching(__pyx_v_loc1, __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":638
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":659
  *         while i1 < i1_plus:
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -42109,7 +42604,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
     __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, __pyx_v_loc1, __pyx_v_loc2, __pyx_v_offset_by_one, __pyx_v_len_last);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":639
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":660
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)
  *             if comparison == 0:             # <<<<<<<<<<<<<<
@@ -42119,7 +42614,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_comparison == 0);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":640
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":661
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)
  *             if comparison == 0:
  *                 prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42128,7 +42623,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
       __pyx_v_prev_comparison = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":641
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":662
  *             if comparison == 0:
  *                 prev_comparison = 0
  *                 break             # <<<<<<<<<<<<<<
@@ -42139,7 +42634,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
       goto __pyx_L5;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":642
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":663
  *                 prev_comparison = 0
  *                 break
  *             elif i1 == i1_minus:             # <<<<<<<<<<<<<<
@@ -42149,7 +42644,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_i1 == __pyx_v_i1_minus);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":664
  *                 break
  *             elif i1 == i1_minus:
  *                 prev_comparison = comparison             # <<<<<<<<<<<<<<
@@ -42161,7 +42656,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":645
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":666
  *                 prev_comparison = comparison
  *             else:
  *                 if comparison != prev_comparison:             # <<<<<<<<<<<<<<
@@ -42171,7 +42666,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
       __pyx_t_1 = (__pyx_v_comparison != __pyx_v_prev_comparison);
       if (__pyx_t_1) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":646
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":667
  *             else:
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42180,7 +42675,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
         __pyx_v_prev_comparison = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":647
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":668
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -42194,7 +42689,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":648
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":669
  *                     prev_comparison = 0
  *                     break
  *             i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42205,7 +42700,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   }
   __pyx_L4_break:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":649
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":670
  *                     break
  *             i1 = i1 + step1
  *         return prev_comparison             # <<<<<<<<<<<<<<
@@ -42221,7 +42716,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":652
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":673
  * 
  * 
  *     cdef long compare_matchings(self, Matching* loc1, Matching* loc2, int offset_by_one, int len_last):             # <<<<<<<<<<<<<<
@@ -42239,7 +42734,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("compare_matchings", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":655
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":676
  *         cdef int i
  * 
  *         if loc1.sent_id > loc2.sent_id:             # <<<<<<<<<<<<<<
@@ -42249,7 +42744,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_1 = (__pyx_v_loc1->sent_id > __pyx_v_loc2->sent_id);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":656
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":677
  * 
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1             # <<<<<<<<<<<<<<
@@ -42262,7 +42757,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":657
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:             # <<<<<<<<<<<<<<
@@ -42272,7 +42767,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_1 = (__pyx_v_loc2->sent_id > __pyx_v_loc1->sent_id);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":658
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":679
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:
  *             return -1             # <<<<<<<<<<<<<<
@@ -42285,7 +42780,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":660
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
  *             return -1
  * 
  *         if loc1.size == 1 and loc2.size == 1:             # <<<<<<<<<<<<<<
@@ -42301,7 +42796,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":661
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":682
  * 
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:             # <<<<<<<<<<<<<<
@@ -42311,7 +42806,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc2->arr[__pyx_v_loc2->start]) - (__pyx_v_loc1->arr[__pyx_v_loc1->start])) <= __pyx_v_self->train_min_gap_size);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":662
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":683
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -42326,7 +42821,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     goto __pyx_L5;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":664
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
  *                 return 1
  * 
  *         elif offset_by_one:             # <<<<<<<<<<<<<<
@@ -42335,7 +42830,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
  */
   if (__pyx_v_offset_by_one) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":665
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":686
  * 
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -42345,7 +42840,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_4 = __pyx_v_loc1->size;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":666
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":687
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:             # <<<<<<<<<<<<<<
@@ -42355,7 +42850,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) > (__pyx_v_loc2->arr[((__pyx_v_loc2->start + __pyx_v_i) - 1)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":667
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":688
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -42368,7 +42863,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L9:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":668
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":689
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i-1]:             # <<<<<<<<<<<<<<
@@ -42378,7 +42873,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) < (__pyx_v_loc2->arr[((__pyx_v_loc2->start + __pyx_v_i) - 1)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":669
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":690
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i-1]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -42395,7 +42890,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":672
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":693
  * 
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -42405,7 +42900,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc1->arr[__pyx_v_loc1->start]) + 1) > (__pyx_v_loc2->arr[__pyx_v_loc2->start]));
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":673
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":694
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -42418,7 +42913,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L11:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":674
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":695
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -42428,7 +42923,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc1->arr[__pyx_v_loc1->start]) + 1) < (__pyx_v_loc2->arr[__pyx_v_loc2->start]));
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":675
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":696
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:
  *                 return -1             # <<<<<<<<<<<<<<
@@ -42441,7 +42936,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":677
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":698
  *                 return -1
  * 
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -42451,7 +42946,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_4 = __pyx_v_loc1->size;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":699
  * 
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -42461,7 +42956,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) > (__pyx_v_loc2->arr[(__pyx_v_loc2->start + __pyx_v_i)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":679
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":700
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -42474,7 +42969,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L15:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":680
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -42484,7 +42979,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) < (__pyx_v_loc2->arr[(__pyx_v_loc2->start + __pyx_v_i)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":702
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -42500,7 +42995,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":683
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
  *                     return -1
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -42510,7 +43005,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_3 = ((((__pyx_v_loc2->arr[(__pyx_v_loc2->end - 1)]) + __pyx_v_len_last) - (__pyx_v_loc1->arr[__pyx_v_loc1->start])) > __pyx_v_self->train_max_initial_size);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":684
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":705
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1             # <<<<<<<<<<<<<<
@@ -42523,7 +43018,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L17:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1
  *         return 0             # <<<<<<<<<<<<<<
@@ -42539,7 +43034,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":688
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":709
  * 
  * 
  *     cdef int* merge_helper(self, int low1, int high1, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -42563,7 +43058,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
   int __pyx_t_3;
   __Pyx_RefNannySetupContext("merge_helper", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":696
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":717
  *         cdef Matching loc1, loc2
  * 
  *         result_len[0] = 0             # <<<<<<<<<<<<<<
@@ -42572,7 +43067,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   (__pyx_v_result_len[0]) = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":697
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":718
  * 
  *         result_len[0] = 0
  *         result = <int*> malloc(0*sizeof(int))             # <<<<<<<<<<<<<<
@@ -42581,7 +43076,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_result = ((int *)malloc((0 * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":699
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":720
  *         result = <int*> malloc(0*sizeof(int))
  * 
  *         i1 = low1             # <<<<<<<<<<<<<<
@@ -42590,7 +43085,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_i1 = __pyx_v_low1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":700
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":721
  * 
  *         i1 = low1
  *         i2 = low2             # <<<<<<<<<<<<<<
@@ -42599,7 +43094,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_i2 = __pyx_v_low2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":722
  *         i1 = low1
  *         i2 = low2
  *         while i1 < high1 and i2 < high2:             # <<<<<<<<<<<<<<
@@ -42616,7 +43111,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
     if (!__pyx_t_3) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":725
  * 
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42625,7 +43120,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
     __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":705
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":726
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             while i2 < high2:             # <<<<<<<<<<<<<<
@@ -42636,7 +43131,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       __pyx_t_3 = (__pyx_v_i2 < __pyx_v_high2);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":727
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             while i2 < high2:
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42645,7 +43140,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_i2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":707
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":728
  *             while i2 < high2:
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                 if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:             # <<<<<<<<<<<<<<
@@ -42655,7 +43150,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":708
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":729
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                 if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:
  *                     i2 = i2 + step2             # <<<<<<<<<<<<<<
@@ -42667,7 +43162,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":710
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":731
  *                     i2 = i2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -42680,7 +43175,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
     __pyx_L6_break:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":713
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":734
  * 
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1             # <<<<<<<<<<<<<<
@@ -42689,7 +43184,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
     __pyx_v_j1 = __pyx_v_i1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":714
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":735
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:             # <<<<<<<<<<<<<<
@@ -42706,7 +43201,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       if (!__pyx_t_2) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":715
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":736
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42715,7 +43210,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":716
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":737
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2             # <<<<<<<<<<<<<<
@@ -42724,7 +43219,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_v_j2 = __pyx_v_i2;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":717
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":738
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2
  *                 while j2 < high2:             # <<<<<<<<<<<<<<
@@ -42735,7 +43230,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_j2 < __pyx_v_high2);
         if (!__pyx_t_2) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":718
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":739
  *                 j2 = i2
  *                 while j2 < high2:
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42744,7 +43239,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_j2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":719
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":740
  *                 while j2 < high2:
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -42753,7 +43248,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
         __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":720
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":741
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:             # <<<<<<<<<<<<<<
@@ -42763,7 +43258,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_comparison == 0);
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":721
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":742
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:
  *                         result = append_combined_matching(result, &loc1, &loc2, offset_by_one, num_subpatterns, result_len)             # <<<<<<<<<<<<<<
@@ -42775,7 +43270,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L12:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":722
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
  *                     if comparison == 0:
  *                         result = append_combined_matching(result, &loc1, &loc2, offset_by_one, num_subpatterns, result_len)
  *                     if comparison == 1:             # <<<<<<<<<<<<<<
@@ -42788,7 +43283,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L13:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":724
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
  *                     if comparison == 1:
  *                         pass
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42798,7 +43293,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_comparison == -1);
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":725
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":746
  *                         pass
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -42810,7 +43305,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":727
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":748
  *                         break
  *                     else:
  *                         j2 = j2 + step2             # <<<<<<<<<<<<<<
@@ -42823,7 +43318,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       __pyx_L11_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":728
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
  *                     else:
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42834,7 +43329,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":729
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":750
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1
  *         return result             # <<<<<<<<<<<<<<
@@ -42850,7 +43345,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":732
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":753
  * 
  * 
  *     cdef void sort_phrase_loc(self, IntList arr, PhraseLocation loc, Phrase phrase):             # <<<<<<<<<<<<<<
@@ -42872,26 +43367,26 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("sort_phrase_loc", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":737
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":758
  *         cdef IntList result
  * 
  *         if phrase in self.precomputed_index:             # <<<<<<<<<<<<<<
  *             loc.arr = self.precomputed_index[phrase]
  *         else:
  */
-  __pyx_t_1 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_phrase), __pyx_v_self->precomputed_index, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 737; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_phrase), __pyx_v_self->precomputed_index, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 758; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":738
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
  * 
  *         if phrase in self.precomputed_index:
  *             loc.arr = self.precomputed_index[phrase]             # <<<<<<<<<<<<<<
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  */
-    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_index, ((PyObject *)__pyx_v_phrase)); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 738; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_index, ((PyObject *)__pyx_v_phrase)); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 759; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 738; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 759; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GIVEREF(__pyx_t_2);
     __Pyx_GOTREF(__pyx_v_loc->arr);
     __Pyx_DECREF(((PyObject *)__pyx_v_loc->arr));
@@ -42901,20 +43396,20 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":740
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
  *             loc.arr = self.precomputed_index[phrase]
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)             # <<<<<<<<<<<<<<
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:
  */
-    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 740; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-    __pyx_t_3 = PyInt_FromLong((__pyx_v_loc->sa_high - __pyx_v_loc->sa_low)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 740; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyInt_FromLong((__pyx_v_loc->sa_high - __pyx_v_loc->sa_low)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 740; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 740; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __Pyx_GIVEREF(__pyx_t_3);
@@ -42923,27 +43418,27 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_v_loc->arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":741
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":762
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  *             veb = VEB(arr.len)             # <<<<<<<<<<<<<<
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])
  */
-    __pyx_t_3 = PyInt_FromLong(__pyx_v_arr->len); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 741; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyInt_FromLong(__pyx_v_arr->len); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 741; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_3);
     __Pyx_GIVEREF(__pyx_t_3);
     __pyx_t_3 = 0;
-    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_VEB)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 741; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_VEB)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __pyx_v_veb = ((struct __pyx_obj_3_sa_VEB *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":742
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":763
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:             # <<<<<<<<<<<<<<
@@ -42953,7 +43448,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_t_4 = __pyx_v_loc->sa_high;
     for (__pyx_v_i = __pyx_v_loc->sa_low; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])             # <<<<<<<<<<<<<<
@@ -42963,7 +43458,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
       ((struct __pyx_vtabstruct_3_sa_VEB *)__pyx_v_veb->__pyx_vtab)->_insert(__pyx_v_veb, (__pyx_v_arr->arr[__pyx_v_i]));
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":744
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":765
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val             # <<<<<<<<<<<<<<
@@ -42972,7 +43467,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
     __pyx_v_i = __pyx_v_veb->veb->min_val;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:             # <<<<<<<<<<<<<<
@@ -42982,7 +43477,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_t_4 = (__pyx_v_loc->sa_high - __pyx_v_loc->sa_low);
     for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":746
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":767
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i             # <<<<<<<<<<<<<<
@@ -42991,7 +43486,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
       (__pyx_v_loc->arr->arr[__pyx_v_j]) = __pyx_v_i;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":747
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)             # <<<<<<<<<<<<<<
@@ -43003,7 +43498,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":748
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":769
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0             # <<<<<<<<<<<<<<
@@ -43012,7 +43507,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
   __pyx_v_loc->arr_low = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":770
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0
  *         loc.arr_high = loc.arr.len             # <<<<<<<<<<<<<<
@@ -43031,7 +43526,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":752
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":773
  * 
  * 
  *     cdef intersect_helper(self, Phrase prefix, Phrase suffix,             # <<<<<<<<<<<<<<
@@ -43068,7 +43563,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("intersect_helper", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
  *         cdef int* result_ptr
  * 
  *         result_len = 0             # <<<<<<<<<<<<<<
@@ -43077,21 +43572,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
  *         result_len = 0
  * 
  *         if sym_isvar(suffix[0]):             # <<<<<<<<<<<<<<
  *             offset_by_one = 1
  *         else:
  */
-  __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_suffix), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_suffix), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __pyx_t_3 = __pyx_f_3_sa_sym_isvar(__pyx_t_2);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":762
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":783
  * 
  *         if sym_isvar(suffix[0]):
  *             offset_by_one = 1             # <<<<<<<<<<<<<<
@@ -43103,7 +43598,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":785
  *             offset_by_one = 1
  *         else:
  *             offset_by_one = 0             # <<<<<<<<<<<<<<
@@ -43114,34 +43609,34 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
  *             offset_by_one = 0
  * 
  *         len_last = len(suffix.getchunk(suffix.arity()))             # <<<<<<<<<<<<<<
  * 
  *         if prefix_loc.arr is None:
  */
-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__getchunk); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__getchunk); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_5);
   __Pyx_GIVEREF(__pyx_t_5);
   __pyx_t_5 = 0;
-  __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
-  __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
   __pyx_v_len_last = __pyx_t_6;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":789
  *         len_last = len(suffix.getchunk(suffix.arity()))
  * 
  *         if prefix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43151,7 +43646,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (((PyObject *)__pyx_v_prefix_loc->arr) == Py_None);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":769
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":790
  * 
  *         if prefix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)             # <<<<<<<<<<<<<<
@@ -43166,7 +43661,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":770
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
  *         if prefix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)
  *         arr1 = prefix_loc.arr             # <<<<<<<<<<<<<<
@@ -43176,7 +43671,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __Pyx_INCREF(((PyObject *)__pyx_v_prefix_loc->arr));
   __pyx_v_arr1 = __pyx_v_prefix_loc->arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":771
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":792
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43185,7 +43680,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_low1 = __pyx_v_prefix_loc->arr_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":772
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":793
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43194,7 +43689,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_high1 = __pyx_v_prefix_loc->arr_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":773
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":794
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high
  *         step1 = prefix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43203,7 +43698,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_step1 = __pyx_v_prefix_loc->num_subpatterns;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":775
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":796
  *         step1 = prefix_loc.num_subpatterns
  * 
  *         if suffix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43213,7 +43708,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (((PyObject *)__pyx_v_suffix_loc->arr) == Py_None);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":776
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":797
  * 
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)             # <<<<<<<<<<<<<<
@@ -43228,7 +43723,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":777
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr             # <<<<<<<<<<<<<<
@@ -43238,7 +43733,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __Pyx_INCREF(((PyObject *)__pyx_v_suffix_loc->arr));
   __pyx_v_arr2 = __pyx_v_suffix_loc->arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":778
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":799
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43247,7 +43742,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_low2 = __pyx_v_suffix_loc->arr_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":779
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":800
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low
  *         high2 = suffix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43256,7 +43751,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_high2 = __pyx_v_suffix_loc->arr_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":801
  *         low2 = suffix_loc.arr_low
  *         high2 = suffix_loc.arr_high
  *         step2 = suffix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43265,26 +43760,26 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_step2 = __pyx_v_suffix_loc->num_subpatterns;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":803
  *         step2 = suffix_loc.num_subpatterns
  * 
  *         num_subpatterns = prefix.arity()+1             # <<<<<<<<<<<<<<
  * 
  *         if algorithm == MERGE:
  */
-  __pyx_t_5 = PyObject_GetAttr(((PyObject *)__pyx_v_prefix), __pyx_n_s__arity); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyObject_GetAttr(((PyObject *)__pyx_v_prefix), __pyx_n_s__arity); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
-  __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-  __pyx_t_5 = PyNumber_Add(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyNumber_Add(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  __pyx_t_3 = __Pyx_PyInt_AsInt(__pyx_t_5); if (unlikely((__pyx_t_3 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = __Pyx_PyInt_AsInt(__pyx_t_5); if (unlikely((__pyx_t_3 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
   __pyx_v_num_subpatterns = __pyx_t_3;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":784
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":805
  *         num_subpatterns = prefix.arity()+1
  * 
  *         if algorithm == MERGE:             # <<<<<<<<<<<<<<
@@ -43294,7 +43789,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (__pyx_v_algorithm == __pyx_v_3_sa_MERGE);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":808
  *             result_ptr = self.merge_helper(low1, high1, arr1.arr, step1,
  *                                     low2, high2, arr2.arr, step2,
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)             # <<<<<<<<<<<<<<
@@ -43306,7 +43801,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
  *             result_ptr = self.baeza_yates_helper(low1, high1, arr1.arr, step1,
  *                                     low2, high2, arr2.arr, step2,
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)             # <<<<<<<<<<<<<<
@@ -43317,7 +43812,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":793
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)
  * 
  *         if result_len == 0:             # <<<<<<<<<<<<<<
@@ -43327,7 +43822,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (__pyx_v_result_len == 0);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":794
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":815
  * 
  *         if result_len == 0:
  *             free(result_ptr)             # <<<<<<<<<<<<<<
@@ -43336,7 +43831,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result_ptr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":795
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":816
  *         if result_len == 0:
  *             free(result_ptr)
  *             return None             # <<<<<<<<<<<<<<
@@ -43351,19 +43846,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":797
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":818
  *             return None
  *         else:
  *             result = IntList()             # <<<<<<<<<<<<<<
  *             free(result.arr)
  *             result.arr = result_ptr
  */
-    __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 818; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __pyx_v_result = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_5);
     __pyx_t_5 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":819
  *         else:
  *             result = IntList()
  *             free(result.arr)             # <<<<<<<<<<<<<<
@@ -43372,7 +43867,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":799
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":820
  *             result = IntList()
  *             free(result.arr)
  *             result.arr = result_ptr             # <<<<<<<<<<<<<<
@@ -43381,7 +43876,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->arr = __pyx_v_result_ptr;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":800
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":821
  *             free(result.arr)
  *             result.arr = result_ptr
  *             result.len = result_len             # <<<<<<<<<<<<<<
@@ -43390,7 +43885,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->len = __pyx_v_result_len;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":801
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":822
  *             result.arr = result_ptr
  *             result.len = result_len
  *             result.size = result_len             # <<<<<<<<<<<<<<
@@ -43399,7 +43894,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->size = __pyx_v_result_len;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":802
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":823
  *             result.len = result_len
  *             result.size = result_len
  *             return PhraseLocation(arr_low=0, arr_high=result_len, arr=result, num_subpatterns=num_subpatterns)             # <<<<<<<<<<<<<<
@@ -43407,19 +43902,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  *     cdef loc2str(self, PhraseLocation loc):
  */
     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_5 = PyDict_New(); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyDict_New(); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_5));
-    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_low), __pyx_int_0) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_4 = PyInt_FromLong(__pyx_v_result_len); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_low), __pyx_int_0) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_v_result_len); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_high), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_high), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr), ((PyObject *)__pyx_v_result)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_4 = PyInt_FromLong(__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr), ((PyObject *)__pyx_v_result)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
     __pyx_r = __pyx_t_4;
@@ -43445,7 +43940,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":804
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":825
  *             return PhraseLocation(arr_low=0, arr_high=result_len, arr=result, num_subpatterns=num_subpatterns)
  * 
  *     cdef loc2str(self, PhraseLocation loc):             # <<<<<<<<<<<<<<
@@ -43468,7 +43963,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("loc2str", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":806
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":827
  *     cdef loc2str(self, PhraseLocation loc):
  *         cdef int i, j
  *         result = "{"             # <<<<<<<<<<<<<<
@@ -43478,7 +43973,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_116));
   __pyx_v_result = ((PyObject *)__pyx_kp_s_116);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":807
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":828
  *         cdef int i, j
  *         result = "{"
  *         i = 0             # <<<<<<<<<<<<<<
@@ -43487,7 +43982,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":808
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":829
  *         result = "{"
  *         i = 0
  *         while i < loc.arr_high:             # <<<<<<<<<<<<<<
@@ -43498,20 +43993,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
     __pyx_t_1 = (__pyx_v_i < __pyx_v_loc->arr_high);
     if (!__pyx_t_1) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":809
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":830
  *         i = 0
  *         while i < loc.arr_high:
  *             result = result + "("             # <<<<<<<<<<<<<<
  *             for j from i <= j < i + loc.num_subpatterns:
  *                 result = result + ("%d " %loc.arr[j])
  */
-    __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_117)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 809; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_117)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 830; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_v_result);
     __pyx_v_result = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":810
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":831
  *         while i < loc.arr_high:
  *             result = result + "("
  *             for j from i <= j < i + loc.num_subpatterns:             # <<<<<<<<<<<<<<
@@ -43521,19 +44016,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
     __pyx_t_3 = (__pyx_v_i + __pyx_v_loc->num_subpatterns);
     for (__pyx_v_j = __pyx_v_i; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":811
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":832
  *             result = result + "("
  *             for j from i <= j < i + loc.num_subpatterns:
  *                 result = result + ("%d " %loc.arr[j])             # <<<<<<<<<<<<<<
  *             result = result + ")"
  *             i = i + loc.num_subpatterns
  */
-      __pyx_t_2 = __Pyx_GetItemInt(((PyObject *)__pyx_v_loc->arr), __pyx_v_j, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 811; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(((PyObject *)__pyx_v_loc->arr), __pyx_v_j, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_21), __pyx_t_2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 811; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_21), __pyx_t_2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(((PyObject *)__pyx_t_4));
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 811; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
       __Pyx_DECREF(__pyx_v_result);
@@ -43541,20 +44036,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
       __pyx_t_2 = 0;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
  *             for j from i <= j < i + loc.num_subpatterns:
  *                 result = result + ("%d " %loc.arr[j])
  *             result = result + ")"             # <<<<<<<<<<<<<<
  *             i = i + loc.num_subpatterns
  *         result = result + "}"
  */
-    __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_59)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 812; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_59)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 833; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_v_result);
     __pyx_v_result = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":813
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":834
  *                 result = result + ("%d " %loc.arr[j])
  *             result = result + ")"
  *             i = i + loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43564,20 +44059,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
     __pyx_v_i = (__pyx_v_i + __pyx_v_loc->num_subpatterns);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":835
  *             result = result + ")"
  *             i = i + loc.num_subpatterns
  *         result = result + "}"             # <<<<<<<<<<<<<<
  *         return result
  * 
  */
-  __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_118)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 814; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_118)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_v_result);
   __pyx_v_result = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":815
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
  *             i = i + loc.num_subpatterns
  *         result = result + "}"
  *         return result             # <<<<<<<<<<<<<<
@@ -43603,7 +44098,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":817
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":838
  *         return result
  * 
  *     cdef PhraseLocation intersect(self, prefix_node, suffix_node, Phrase phrase):             # <<<<<<<<<<<<<<
@@ -43629,81 +44124,81 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("intersect", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":821
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":842
  *         cdef PhraseLocation prefix_loc, suffix_loc, result
  * 
  *         prefix = prefix_node.phrase             # <<<<<<<<<<<<<<
  *         suffix = suffix_node.phrase
  *         prefix_loc = prefix_node.phrase_location
  */
-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 821; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 821; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_prefix = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":822
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
  * 
  *         prefix = prefix_node.phrase
  *         suffix = suffix_node.phrase             # <<<<<<<<<<<<<<
  *         prefix_loc = prefix_node.phrase_location
  *         suffix_loc = suffix_node.phrase_location
  */
-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 822; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 822; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_suffix = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":823
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":844
  *         prefix = prefix_node.phrase
  *         suffix = suffix_node.phrase
  *         prefix_loc = prefix_node.phrase_location             # <<<<<<<<<<<<<<
  *         suffix_loc = suffix_node.phrase_location
  * 
  */
-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 844; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 844; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_prefix_loc = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":824
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
  *         suffix = suffix_node.phrase
  *         prefix_loc = prefix_node.phrase_location
  *         suffix_loc = suffix_node.phrase_location             # <<<<<<<<<<<<<<
  * 
  *         result = self.get_precomputed_collocation(phrase)
  */
-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 824; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 824; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_suffix_loc = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":826
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":847
  *         suffix_loc = suffix_node.phrase_location
  * 
  *         result = self.get_precomputed_collocation(phrase)             # <<<<<<<<<<<<<<
  *         if result is not None:
  *             intersect_method = "precomputed"
  */
-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s_119); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 826; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s_119); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 826; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_INCREF(((PyObject *)__pyx_v_phrase));
   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_phrase));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_phrase));
-  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 826; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
-  if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 826; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_result = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_3);
   __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":827
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":848
  * 
  *         result = self.get_precomputed_collocation(phrase)
  *         if result is not None:             # <<<<<<<<<<<<<<
@@ -43713,7 +44208,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   __pyx_t_4 = (((PyObject *)__pyx_v_result) != Py_None);
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":828
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":849
  *         result = self.get_precomputed_collocation(phrase)
  *         if result is not None:
  *             intersect_method = "precomputed"             # <<<<<<<<<<<<<<
@@ -43726,7 +44221,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":830
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
  *             intersect_method = "precomputed"
  * 
  *         if result is None:             # <<<<<<<<<<<<<<
@@ -43736,7 +44231,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   __pyx_t_4 = (((PyObject *)__pyx_v_result) == Py_None);
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":831
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":852
  * 
  *         if result is None:
  *             if self.use_baeza_yates:             # <<<<<<<<<<<<<<
@@ -43745,21 +44240,21 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
  */
     if (__pyx_v_self->use_baeza_yates) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":832
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":853
  *         if result is None:
  *             if self.use_baeza_yates:
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, BAEZA_YATES)             # <<<<<<<<<<<<<<
  *                 intersect_method="double binary"
  *             else:
  */
-      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_BAEZA_YATES); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_BAEZA_YATES); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(((PyObject *)__pyx_v_result));
       __pyx_v_result = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_3);
       __pyx_t_3 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":854
  *             if self.use_baeza_yates:
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, BAEZA_YATES)
  *                 intersect_method="double binary"             # <<<<<<<<<<<<<<
@@ -43773,21 +44268,21 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":835
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":856
  *                 intersect_method="double binary"
  *             else:
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, MERGE)             # <<<<<<<<<<<<<<
  *                 intersect_method="merge"
  *         return result
  */
-      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_MERGE); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_MERGE); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 856; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 856; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(((PyObject *)__pyx_v_result));
       __pyx_v_result = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_3);
       __pyx_t_3 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":857
  *             else:
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, MERGE)
  *                 intersect_method="merge"             # <<<<<<<<<<<<<<
@@ -43803,7 +44298,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":837
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":858
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, MERGE)
  *                 intersect_method="merge"
  *         return result             # <<<<<<<<<<<<<<
@@ -43865,16 +44360,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_13advance(PyObject *__p
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__res)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 839; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__fwords)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 839; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "advance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 839; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "advance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
       goto __pyx_L5_argtuple_error;
@@ -43889,7 +44384,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_13advance(PyObject *__p
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 839; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.advance", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -43900,7 +44395,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_13advance(PyObject *__p
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":839
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":860
  *         return result
  * 
  *     def advance(self, frontier, res, fwords):             # <<<<<<<<<<<<<<
@@ -43941,19 +44436,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("advance", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":841
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
  *     def advance(self, frontier, res, fwords):
  *         cdef unsigned na
  *         nf = []             # <<<<<<<<<<<<<<
  *         for (toskip, (i, alt, pathlen)) in frontier:
  *             spanlen = fwords[i][alt][2]
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_nf = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":842
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
  *         cdef unsigned na
  *         nf = []
  *         for (toskip, (i, alt, pathlen)) in frontier:             # <<<<<<<<<<<<<<
@@ -43964,7 +44459,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     __pyx_t_1 = __pyx_v_frontier; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
     __pyx_t_3 = NULL;
   } else {
-    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_frontier); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_frontier); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
   }
@@ -43972,23 +44467,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else {
       __pyx_t_4 = __pyx_t_3(__pyx_t_1);
       if (unlikely(!__pyx_t_4)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -44004,7 +44499,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       if (unlikely(size != 2)) {
         if (size > 2) __Pyx_RaiseTooManyValuesError(2);
         else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
@@ -44017,14 +44512,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_INCREF(__pyx_t_5);
       __Pyx_INCREF(__pyx_t_6);
       #else
-      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     } else
     {
       Py_ssize_t index = -1;
-      __pyx_t_7 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_7);
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __pyx_t_8 = Py_TYPE(__pyx_t_7)->tp_iternext;
@@ -44032,7 +44527,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_GOTREF(__pyx_t_5);
       index = 1; __pyx_t_6 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_6)) goto __pyx_L5_unpacking_failed;
       __Pyx_GOTREF(__pyx_t_6);
-      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_t_8 = NULL;
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       goto __pyx_L6_unpacking_done;
@@ -44040,7 +44535,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       __pyx_t_8 = NULL;
       if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L6_unpacking_done:;
     }
     __Pyx_XDECREF(__pyx_v_toskip);
@@ -44056,7 +44551,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       if (unlikely(size != 3)) {
         if (size > 3) __Pyx_RaiseTooManyValuesError(3);
         else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       #if CYTHON_COMPILING_IN_CPYTHON
       if (likely(PyTuple_CheckExact(sequence))) {
@@ -44072,15 +44567,15 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_INCREF(__pyx_t_9);
       __Pyx_INCREF(__pyx_t_10);
       #else
-      __pyx_t_7 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_9 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_10 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_9 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     } else
     {
       Py_ssize_t index = -1;
-      __pyx_t_11 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = PyObject_GetIter(__pyx_t_6); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_11);
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
       __pyx_t_8 = Py_TYPE(__pyx_t_11)->tp_iternext;
@@ -44090,7 +44585,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_GOTREF(__pyx_t_9);
       index = 2; __pyx_t_10 = __pyx_t_8(__pyx_t_11); if (unlikely(!__pyx_t_10)) goto __pyx_L7_unpacking_failed;
       __Pyx_GOTREF(__pyx_t_10);
-      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_11), 3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_11), 3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_t_8 = NULL;
       __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
       goto __pyx_L8_unpacking_done;
@@ -44098,7 +44593,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
       __pyx_t_8 = NULL;
       if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L8_unpacking_done:;
     }
     __Pyx_XDECREF(__pyx_v_i);
@@ -44111,45 +44606,45 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     __pyx_v_pathlen = __pyx_t_10;
     __pyx_t_10 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":864
  *         nf = []
  *         for (toskip, (i, alt, pathlen)) in frontier:
  *             spanlen = fwords[i][alt][2]             # <<<<<<<<<<<<<<
  *             if (toskip == 0):
  *                 res.append((i, alt, pathlen))
  */
-    __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_i); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_i); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 864; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
-    __pyx_t_6 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 864; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-    __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_6, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_6, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 864; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     __Pyx_XDECREF(__pyx_v_spanlen);
     __pyx_v_spanlen = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":844
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":865
  *         for (toskip, (i, alt, pathlen)) in frontier:
  *             spanlen = fwords[i][alt][2]
  *             if (toskip == 0):             # <<<<<<<<<<<<<<
  *                 res.append((i, alt, pathlen))
  *             ni = i + spanlen
  */
-    __pyx_t_4 = PyObject_RichCompare(__pyx_v_toskip, __pyx_int_0, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 844; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_12 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_12 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 844; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_RichCompare(__pyx_v_toskip, __pyx_int_0, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_12 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_12 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_12) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":866
  *             spanlen = fwords[i][alt][2]
  *             if (toskip == 0):
  *                 res.append((i, alt, pathlen))             # <<<<<<<<<<<<<<
  *             ni = i + spanlen
  *             if (ni < len(fwords) and (pathlen + 1) < self.max_initial_size):
  */
-      __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 866; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __Pyx_INCREF(__pyx_v_i);
       PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_i);
@@ -44160,7 +44655,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
       __Pyx_INCREF(__pyx_v_pathlen);
       PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_v_pathlen);
       __Pyx_GIVEREF(__pyx_v_pathlen);
-      __pyx_t_6 = __Pyx_PyObject_Append(__pyx_v_res, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyObject_Append(__pyx_v_res, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 866; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
       __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
@@ -44168,42 +44663,42 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     }
     __pyx_L9:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":846
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":867
  *             if (toskip == 0):
  *                 res.append((i, alt, pathlen))
  *             ni = i + spanlen             # <<<<<<<<<<<<<<
  *             if (ni < len(fwords) and (pathlen + 1) < self.max_initial_size):
  *                 for na in range(len(fwords[ni])):
  */
-    __pyx_t_6 = PyNumber_Add(__pyx_v_i, __pyx_v_spanlen); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 846; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyNumber_Add(__pyx_v_i, __pyx_v_spanlen); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_XDECREF(__pyx_v_ni);
     __pyx_v_ni = __pyx_t_6;
     __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":847
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":868
  *                 res.append((i, alt, pathlen))
  *             ni = i + spanlen
  *             if (ni < len(fwords) and (pathlen + 1) < self.max_initial_size):             # <<<<<<<<<<<<<<
  *                 for na in range(len(fwords[ni])):
  *                     nf.append((toskip - 1, (ni, na, pathlen + 1)))
  */
-    __pyx_t_13 = PyObject_Length(__pyx_v_fwords); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_6 = PyInt_FromSsize_t(__pyx_t_13); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_13 = PyObject_Length(__pyx_v_fwords); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyInt_FromSsize_t(__pyx_t_13); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
-    __pyx_t_4 = PyObject_RichCompare(__pyx_v_ni, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_RichCompare(__pyx_v_ni, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    __pyx_t_12 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_12 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_12 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_12 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     if (__pyx_t_12) {
-      __pyx_t_4 = PyNumber_Add(__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyNumber_Add(__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_6 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
-      __pyx_t_5 = PyObject_RichCompare(__pyx_t_4, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_RichCompare(__pyx_t_4, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-      __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       __pyx_t_15 = __pyx_t_14;
     } else {
@@ -44211,34 +44706,34 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     }
     if (__pyx_t_15) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":848
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":869
  *             ni = i + spanlen
  *             if (ni < len(fwords) and (pathlen + 1) < self.max_initial_size):
  *                 for na in range(len(fwords[ni])):             # <<<<<<<<<<<<<<
  *                     nf.append((toskip - 1, (ni, na, pathlen + 1)))
  *         if (len(nf) > 0):
  */
-      __pyx_t_5 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ni); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 848; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ni); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_13 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 848; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_13 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       for (__pyx_t_16 = 0; __pyx_t_16 < __pyx_t_13; __pyx_t_16+=1) {
         __pyx_v_na = __pyx_t_16;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":849
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":870
  *             if (ni < len(fwords) and (pathlen + 1) < self.max_initial_size):
  *                 for na in range(len(fwords[ni])):
  *                     nf.append((toskip - 1, (ni, na, pathlen + 1)))             # <<<<<<<<<<<<<<
  *         if (len(nf) > 0):
  *             return self.advance(nf, res, fwords)
  */
-        __pyx_t_5 = PyNumber_Subtract(__pyx_v_toskip, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyNumber_Subtract(__pyx_v_toskip, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
-        __pyx_t_6 = PyLong_FromUnsignedLong(__pyx_v_na); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = PyLong_FromUnsignedLong(__pyx_v_na); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_6);
-        __pyx_t_4 = PyNumber_Add(__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyNumber_Add(__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
-        __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
         __Pyx_INCREF(__pyx_v_ni);
         PyTuple_SET_ITEM(__pyx_t_10, 0, __pyx_v_ni);
@@ -44249,7 +44744,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
         __Pyx_GIVEREF(__pyx_t_4);
         __pyx_t_6 = 0;
         __pyx_t_4 = 0;
-        __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
         PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_5);
         __Pyx_GIVEREF(__pyx_t_5);
@@ -44257,7 +44752,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
         __Pyx_GIVEREF(((PyObject *)__pyx_t_10));
         __pyx_t_5 = 0;
         __pyx_t_10 = 0;
-        __pyx_t_17 = PyList_Append(__pyx_v_nf, ((PyObject *)__pyx_t_4)); if (unlikely(__pyx_t_17 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 849; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_17 = PyList_Append(__pyx_v_nf, ((PyObject *)__pyx_t_4)); if (unlikely(__pyx_t_17 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
       }
       goto __pyx_L10;
@@ -44266,18 +44761,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":850
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
  *                 for na in range(len(fwords[ni])):
  *                     nf.append((toskip - 1, (ni, na, pathlen + 1)))
  *         if (len(nf) > 0):             # <<<<<<<<<<<<<<
  *             return self.advance(nf, res, fwords)
  *         else:
  */
-  __pyx_t_2 = PyList_GET_SIZE(((PyObject *)__pyx_v_nf)); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyList_GET_SIZE(((PyObject *)__pyx_v_nf)); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_15 = (__pyx_t_2 > 0);
   if (__pyx_t_15) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
  *                     nf.append((toskip - 1, (ni, na, pathlen + 1)))
  *         if (len(nf) > 0):
  *             return self.advance(nf, res, fwords)             # <<<<<<<<<<<<<<
@@ -44285,9 +44780,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
  *             return res
  */
     __Pyx_XDECREF(__pyx_r);
-    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__advance); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__advance); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_INCREF(((PyObject *)__pyx_v_nf));
     PyTuple_SET_ITEM(__pyx_t_4, 0, ((PyObject *)__pyx_v_nf));
@@ -44298,7 +44793,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
     __Pyx_INCREF(__pyx_v_fwords);
     PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_v_fwords);
     __Pyx_GIVEREF(__pyx_v_fwords);
-    __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
@@ -44309,7 +44804,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":853
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
  *             return self.advance(nf, res, fwords)
  *         else:
  *             return res             # <<<<<<<<<<<<<<
@@ -44387,36 +44882,36 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_15get_all_nodes_isteps_
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__i)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__spanlen)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  3:
         if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__pathlen)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  4:
         if (likely((values[4] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__fwords)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  5:
         if (likely((values[5] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__next_states)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  6:
         if (likely((values[6] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__reachable_buffer)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "get_all_nodes_isteps_away") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "get_all_nodes_isteps_away") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 7) {
       goto __pyx_L5_argtuple_error;
@@ -44439,7 +44934,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_15get_all_nodes_isteps_
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 855; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.get_all_nodes_isteps_away", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -44450,7 +44945,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_15get_all_nodes_isteps_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":855
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":876
  *             return res
  * 
  *     def get_all_nodes_isteps_away(self, skip, i, spanlen, pathlen, fwords, next_states, reachable_buffer):             # <<<<<<<<<<<<<<
@@ -44488,41 +44983,41 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("get_all_nodes_isteps_away", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":857
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":878
  *     def get_all_nodes_isteps_away(self, skip, i, spanlen, pathlen, fwords, next_states, reachable_buffer):
  *         cdef unsigned alt_it
  *         frontier = []             # <<<<<<<<<<<<<<
  *         if (i+spanlen+skip >= len(next_states)):
  *             return frontier
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_frontier = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":858
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":879
  *         cdef unsigned alt_it
  *         frontier = []
  *         if (i+spanlen+skip >= len(next_states)):             # <<<<<<<<<<<<<<
  *             return frontier
  *         key = tuple([i,spanlen])
  */
-  __pyx_t_1 = PyNumber_Add(__pyx_v_i, __pyx_v_spanlen); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyNumber_Add(__pyx_v_i, __pyx_v_spanlen); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_skip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_skip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_3 = PyObject_Length(__pyx_v_next_states); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Length(__pyx_v_next_states); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_4 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 858; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":859
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":880
  *         frontier = []
  *         if (i+spanlen+skip >= len(next_states)):
  *             return frontier             # <<<<<<<<<<<<<<
@@ -44537,14 +45032,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":860
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":881
  *         if (i+spanlen+skip >= len(next_states)):
  *             return frontier
  *         key = tuple([i,spanlen])             # <<<<<<<<<<<<<<
  *         reachable = []
  *         if (key in reachable_buffer):
  */
-  __pyx_t_4 = PyList_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyList_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_4);
   __Pyx_INCREF(__pyx_v_i);
   PyList_SET_ITEM(__pyx_t_4, 0, __pyx_v_i);
@@ -44552,42 +45047,42 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
   __Pyx_INCREF(__pyx_v_spanlen);
   PyList_SET_ITEM(__pyx_t_4, 1, __pyx_v_spanlen);
   __Pyx_GIVEREF(__pyx_v_spanlen);
-  __pyx_t_1 = ((PyObject *)PyList_AsTuple(__pyx_t_4)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = ((PyObject *)PyList_AsTuple(__pyx_t_4)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_1));
   __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
   __pyx_v_key = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":861
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":882
  *             return frontier
  *         key = tuple([i,spanlen])
  *         reachable = []             # <<<<<<<<<<<<<<
  *         if (key in reachable_buffer):
  *             reachable = reachable_buffer[key]
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_reachable = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":883
  *         key = tuple([i,spanlen])
  *         reachable = []
  *         if (key in reachable_buffer):             # <<<<<<<<<<<<<<
  *             reachable = reachable_buffer[key]
  *         else:
  */
-  __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_key), __pyx_v_reachable_buffer, Py_EQ)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_key), __pyx_v_reachable_buffer, Py_EQ)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":884
  *         reachable = []
  *         if (key in reachable_buffer):
  *             reachable = reachable_buffer[key]             # <<<<<<<<<<<<<<
  *         else:
  *             reachable = self.reachable(fwords, i, spanlen)
  */
-    __pyx_t_1 = PyObject_GetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key)); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key)); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_DECREF(__pyx_v_reachable);
     __pyx_v_reachable = __pyx_t_1;
@@ -44596,16 +45091,16 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":865
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":886
  *             reachable = reachable_buffer[key]
  *         else:
  *             reachable = self.reachable(fwords, i, spanlen)             # <<<<<<<<<<<<<<
  *             reachable_buffer[key] = reachable
  *         for nextreachable in reachable:
  */
-    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_INCREF(__pyx_v_fwords);
     PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_fwords);
@@ -44616,7 +45111,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     __Pyx_INCREF(__pyx_v_spanlen);
     PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_v_spanlen);
     __Pyx_GIVEREF(__pyx_v_spanlen);
-    __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
@@ -44624,18 +45119,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     __pyx_v_reachable = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":866
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":887
  *         else:
  *             reachable = self.reachable(fwords, i, spanlen)
  *             reachable_buffer[key] = reachable             # <<<<<<<<<<<<<<
  *         for nextreachable in reachable:
  *             for next_id in next_states[nextreachable]:
  */
-    if (PyObject_SetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key), __pyx_v_reachable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 866; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyObject_SetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key), __pyx_v_reachable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":867
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":888
  *             reachable = self.reachable(fwords, i, spanlen)
  *             reachable_buffer[key] = reachable
  *         for nextreachable in reachable:             # <<<<<<<<<<<<<<
@@ -44646,7 +45141,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     __pyx_t_2 = __pyx_v_reachable; __Pyx_INCREF(__pyx_t_2); __pyx_t_3 = 0;
     __pyx_t_6 = NULL;
   } else {
-    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_reachable); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_reachable); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __pyx_t_6 = Py_TYPE(__pyx_t_2)->tp_iternext;
   }
@@ -44654,23 +45149,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     if (!__pyx_t_6 && PyList_CheckExact(__pyx_t_2)) {
       if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_2)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else if (!__pyx_t_6 && PyTuple_CheckExact(__pyx_t_2)) {
       if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else {
       __pyx_t_4 = __pyx_t_6(__pyx_t_2);
       if (unlikely(!__pyx_t_4)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 867; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -44680,20 +45175,20 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     __pyx_v_nextreachable = __pyx_t_4;
     __pyx_t_4 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":868
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":889
  *             reachable_buffer[key] = reachable
  *         for nextreachable in reachable:
  *             for next_id in next_states[nextreachable]:             # <<<<<<<<<<<<<<
  *                 jump = self.shortest(fwords,i,next_id)
  *                 if jump < skip:
  */
-    __pyx_t_4 = PyObject_GetItem(__pyx_v_next_states, __pyx_v_nextreachable); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetItem(__pyx_v_next_states, __pyx_v_nextreachable); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
       __pyx_t_1 = __pyx_t_4; __Pyx_INCREF(__pyx_t_1); __pyx_t_7 = 0;
       __pyx_t_8 = NULL;
     } else {
-      __pyx_t_7 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __pyx_t_8 = Py_TYPE(__pyx_t_1)->tp_iternext;
     }
@@ -44702,23 +45197,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
       if (!__pyx_t_8 && PyList_CheckExact(__pyx_t_1)) {
         if (__pyx_t_7 >= PyList_GET_SIZE(__pyx_t_1)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else if (!__pyx_t_8 && PyTuple_CheckExact(__pyx_t_1)) {
         if (__pyx_t_7 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else {
         __pyx_t_4 = __pyx_t_8(__pyx_t_1);
         if (unlikely(!__pyx_t_4)) {
           if (PyErr_Occurred()) {
             if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           break;
         }
@@ -44728,16 +45223,16 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
       __pyx_v_next_id = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":869
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":890
  *         for nextreachable in reachable:
  *             for next_id in next_states[nextreachable]:
  *                 jump = self.shortest(fwords,i,next_id)             # <<<<<<<<<<<<<<
  *                 if jump < skip:
  *                     continue
  */
-      __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__shortest); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__shortest); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_9);
       __Pyx_INCREF(__pyx_v_fwords);
       PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_fwords);
@@ -44748,7 +45243,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
       __Pyx_INCREF(__pyx_v_next_id);
       PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_next_id);
       __Pyx_GIVEREF(__pyx_v_next_id);
-      __pyx_t_10 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
@@ -44756,19 +45251,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
       __pyx_v_jump = __pyx_t_10;
       __pyx_t_10 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":870
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":891
  *             for next_id in next_states[nextreachable]:
  *                 jump = self.shortest(fwords,i,next_id)
  *                 if jump < skip:             # <<<<<<<<<<<<<<
  *                     continue
  *                 if pathlen+jump <= self.max_initial_size:
  */
-      __pyx_t_10 = PyObject_RichCompare(__pyx_v_jump, __pyx_v_skip, Py_LT); __Pyx_XGOTREF(__pyx_t_10); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_10); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = PyObject_RichCompare(__pyx_v_jump, __pyx_v_skip, Py_LT); __Pyx_XGOTREF(__pyx_t_10); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_10); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
       if (__pyx_t_5) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":892
  *                 jump = self.shortest(fwords,i,next_id)
  *                 if jump < skip:
  *                     continue             # <<<<<<<<<<<<<<
@@ -44780,50 +45275,50 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
       }
       __pyx_L9:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":893
  *                 if jump < skip:
  *                     continue
  *                 if pathlen+jump <= self.max_initial_size:             # <<<<<<<<<<<<<<
  *                     for alt_id in range(len(fwords[next_id])):
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
  */
-      __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
-      __pyx_t_9 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_9 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_9);
-      __pyx_t_4 = PyObject_RichCompare(__pyx_t_10, __pyx_t_9, Py_LE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_RichCompare(__pyx_t_10, __pyx_t_9, Py_LE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 872; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       if (__pyx_t_5) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":873
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":894
  *                     continue
  *                 if pathlen+jump <= self.max_initial_size:
  *                     for alt_id in range(len(fwords[next_id])):             # <<<<<<<<<<<<<<
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
  *                             newel = (next_id,alt_id,pathlen+jump)
  */
-        __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
-        __pyx_t_11 = PyObject_Length(__pyx_t_4); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyObject_Length(__pyx_t_4); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-        __pyx_t_4 = PyInt_FromSsize_t(__pyx_t_11); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyInt_FromSsize_t(__pyx_t_11); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
-        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_9);
         PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_t_4);
         __Pyx_GIVEREF(__pyx_t_4);
         __pyx_t_4 = 0;
-        __pyx_t_4 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_4);
         __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
         if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
           __pyx_t_9 = __pyx_t_4; __Pyx_INCREF(__pyx_t_9); __pyx_t_11 = 0;
           __pyx_t_12 = NULL;
         } else {
-          __pyx_t_11 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __pyx_t_12 = Py_TYPE(__pyx_t_9)->tp_iternext;
         }
@@ -44832,23 +45327,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
           if (!__pyx_t_12 && PyList_CheckExact(__pyx_t_9)) {
             if (__pyx_t_11 >= PyList_GET_SIZE(__pyx_t_9)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_4 = PyList_GET_ITEM(__pyx_t_9, __pyx_t_11); __Pyx_INCREF(__pyx_t_4); __pyx_t_11++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_4 = PyList_GET_ITEM(__pyx_t_9, __pyx_t_11); __Pyx_INCREF(__pyx_t_4); __pyx_t_11++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else if (!__pyx_t_12 && PyTuple_CheckExact(__pyx_t_9)) {
             if (__pyx_t_11 >= PyTuple_GET_SIZE(__pyx_t_9)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_11); __Pyx_INCREF(__pyx_t_4); __pyx_t_11++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_11); __Pyx_INCREF(__pyx_t_4); __pyx_t_11++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else {
             __pyx_t_4 = __pyx_t_12(__pyx_t_9);
             if (unlikely(!__pyx_t_4)) {
               if (PyErr_Occurred()) {
                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               break;
             }
@@ -44858,40 +45353,40 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
           __pyx_v_alt_id = __pyx_t_4;
           __pyx_t_4 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":895
  *                 if pathlen+jump <= self.max_initial_size:
  *                     for alt_id in range(len(fwords[next_id])):
  *                         if (fwords[next_id][alt_id][0] != EPSILON):             # <<<<<<<<<<<<<<
  *                             newel = (next_id,alt_id,pathlen+jump)
  *                             if newel not in frontier:
  */
-          __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_4);
-          __pyx_t_10 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt_id); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt_id); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
           __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-          __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_10, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_10, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_4);
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
-          __pyx_t_10 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
-          __pyx_t_13 = PyObject_RichCompare(__pyx_t_4, __pyx_t_10, Py_NE); __Pyx_XGOTREF(__pyx_t_13); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_13 = PyObject_RichCompare(__pyx_t_4, __pyx_t_10, Py_NE); __Pyx_XGOTREF(__pyx_t_13); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
-          __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_13); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_13); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
           if (__pyx_t_5) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":875
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":896
  *                     for alt_id in range(len(fwords[next_id])):
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
  *                             newel = (next_id,alt_id,pathlen+jump)             # <<<<<<<<<<<<<<
  *                             if newel not in frontier:
  *                                 frontier.append((next_id,alt_id,pathlen+jump))
  */
-            __pyx_t_13 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 875; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_13 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_13);
-            __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 875; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_10);
             __Pyx_INCREF(__pyx_v_next_id);
             PyTuple_SET_ITEM(__pyx_t_10, 0, __pyx_v_next_id);
@@ -44906,26 +45401,26 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
             __pyx_v_newel = __pyx_t_10;
             __pyx_t_10 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":876
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":897
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
  *                             newel = (next_id,alt_id,pathlen+jump)
  *                             if newel not in frontier:             # <<<<<<<<<<<<<<
  *                                 frontier.append((next_id,alt_id,pathlen+jump))
  *         return frontier
  */
-            __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_newel), ((PyObject *)__pyx_v_frontier), Py_NE)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 876; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_newel), ((PyObject *)__pyx_v_frontier), Py_NE)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             if (__pyx_t_5) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":877
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":898
  *                             newel = (next_id,alt_id,pathlen+jump)
  *                             if newel not in frontier:
  *                                 frontier.append((next_id,alt_id,pathlen+jump))             # <<<<<<<<<<<<<<
  *         return frontier
  * 
  */
-              __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_10);
-              __pyx_t_13 = PyTuple_New(3); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyTuple_New(3); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_13);
               __Pyx_INCREF(__pyx_v_next_id);
               PyTuple_SET_ITEM(__pyx_t_13, 0, __pyx_v_next_id);
@@ -44936,7 +45431,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
               PyTuple_SET_ITEM(__pyx_t_13, 2, __pyx_t_10);
               __Pyx_GIVEREF(__pyx_t_10);
               __pyx_t_10 = 0;
-              __pyx_t_14 = PyList_Append(__pyx_v_frontier, ((PyObject *)__pyx_t_13)); if (unlikely(__pyx_t_14 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyList_Append(__pyx_v_frontier, ((PyObject *)__pyx_t_13)); if (unlikely(__pyx_t_14 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(((PyObject *)__pyx_t_13)); __pyx_t_13 = 0;
               goto __pyx_L14;
             }
@@ -44955,7 +45450,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
   }
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":878
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":899
  *                             if newel not in frontier:
  *                                 frontier.append((next_id,alt_id,pathlen+jump))
  *         return frontier             # <<<<<<<<<<<<<<
@@ -45022,16 +45517,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ifrom)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 880; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__dist)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 880; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "reachable") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 880; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "reachable") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
       goto __pyx_L5_argtuple_error;
@@ -45046,7 +45541,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 880; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.reachable", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -45057,7 +45552,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":880
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":901
  *         return frontier
  * 
  *     def reachable(self, fwords, ifrom, dist):             # <<<<<<<<<<<<<<
@@ -45087,35 +45582,35 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("reachable", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":881
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":902
  * 
  *     def reachable(self, fwords, ifrom, dist):
  *         ret = []             # <<<<<<<<<<<<<<
  *         if (ifrom >= len(fwords)):
  *             return ret
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_ret = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":882
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":903
  *     def reachable(self, fwords, ifrom, dist):
  *         ret = []
  *         if (ifrom >= len(fwords)):             # <<<<<<<<<<<<<<
  *             return ret
  *         for alt_id in range(len(fwords[ifrom])):
  */
-  __pyx_t_2 = PyObject_Length(__pyx_v_fwords); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Length(__pyx_v_fwords); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":883
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":904
  *         ret = []
  *         if (ifrom >= len(fwords)):
  *             return ret             # <<<<<<<<<<<<<<
@@ -45130,32 +45625,32 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":884
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":905
  *         if (ifrom >= len(fwords)):
  *             return ret
  *         for alt_id in range(len(fwords[ifrom])):             # <<<<<<<<<<<<<<
  *             if (fwords[ifrom][alt_id][0] == EPSILON):
  *                 ret.extend(self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist))
  */
-  __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  __pyx_t_2 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-  __pyx_t_3 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_t_3);
   __Pyx_GIVEREF(__pyx_t_3);
   __pyx_t_3 = 0;
-  __pyx_t_3 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
   if (PyList_CheckExact(__pyx_t_3) || PyTuple_CheckExact(__pyx_t_3)) {
     __pyx_t_1 = __pyx_t_3; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
     __pyx_t_5 = NULL;
   } else {
-    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __pyx_t_5 = Py_TYPE(__pyx_t_1)->tp_iternext;
   }
@@ -45164,23 +45659,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
     if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_3); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_3); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_1)) {
       if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_3); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_3); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
     } else {
       __pyx_t_3 = __pyx_t_5(__pyx_t_1);
       if (unlikely(!__pyx_t_3)) {
         if (PyErr_Occurred()) {
           if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         break;
       }
@@ -45190,53 +45685,53 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
     __pyx_v_alt_id = __pyx_t_3;
     __pyx_t_3 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":885
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":906
  *             return ret
  *         for alt_id in range(len(fwords[ifrom])):
  *             if (fwords[ifrom][alt_id][0] == EPSILON):             # <<<<<<<<<<<<<<
  *                 ret.extend(self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist))
  *             else:
  */
-    __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_6 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_6, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_6, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    __pyx_t_6 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
-    __pyx_t_7 = PyObject_RichCompare(__pyx_t_3, __pyx_t_6, Py_EQ); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_7 = PyObject_RichCompare(__pyx_t_3, __pyx_t_6, Py_EQ); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":886
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":907
  *         for alt_id in range(len(fwords[ifrom])):
  *             if (fwords[ifrom][alt_id][0] == EPSILON):
  *                 ret.extend(self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist))             # <<<<<<<<<<<<<<
  *             else:
  *                 if (dist==0):
  */
-      __pyx_t_7 = PyObject_GetAttr(((PyObject *)__pyx_v_ret), __pyx_n_s__extend); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_GetAttr(((PyObject *)__pyx_v_ret), __pyx_n_s__extend); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_7);
-      __pyx_t_6 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
-      __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_8 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_8) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_8) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_8);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_8, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_8, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
-      __pyx_t_8 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_8);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_INCREF(__pyx_v_fwords);
       PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_fwords);
@@ -45247,16 +45742,16 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
       PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_v_dist);
       __Pyx_GIVEREF(__pyx_v_dist);
       __pyx_t_8 = 0;
-      __pyx_t_8 = PyObject_Call(__pyx_t_6, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_Call(__pyx_t_6, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_8);
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_8);
       __Pyx_GIVEREF(__pyx_t_8);
       __pyx_t_8 = 0;
-      __pyx_t_8 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_8);
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
@@ -45265,36 +45760,36 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":888
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
  *                 ret.extend(self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist))
  *             else:
  *                 if (dist==0):             # <<<<<<<<<<<<<<
  *                     if (ifrom not in ret):
  *                         ret.append(ifrom)
  */
-      __pyx_t_8 = PyObject_RichCompare(__pyx_v_dist, __pyx_int_0, Py_EQ); __Pyx_XGOTREF(__pyx_t_8); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_8); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_RichCompare(__pyx_v_dist, __pyx_int_0, Py_EQ); __Pyx_XGOTREF(__pyx_t_8); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_8); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":889
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
  *             else:
  *                 if (dist==0):
  *                     if (ifrom not in ret):             # <<<<<<<<<<<<<<
  *                         ret.append(ifrom)
  *                 else:
  */
-        __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifrom, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifrom, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":890
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":911
  *                 if (dist==0):
  *                     if (ifrom not in ret):
  *                         ret.append(ifrom)             # <<<<<<<<<<<<<<
  *                 else:
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  */
-          __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifrom); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifrom); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           goto __pyx_L8;
         }
         __pyx_L8:;
@@ -45302,29 +45797,29 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":892
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":913
  *                         ret.append(ifrom)
  *                 else:
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):             # <<<<<<<<<<<<<<
  *                         if (ifromchild not in ret):
  *                             ret.append(ifromchild)
  */
-        __pyx_t_8 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_8);
-        __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_7 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-        __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_7, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_7, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-        __pyx_t_7 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-        __pyx_t_3 = PyNumber_Subtract(__pyx_v_dist, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyNumber_Subtract(__pyx_v_dist, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_6 = PyTuple_New(3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = PyTuple_New(3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_6);
         __Pyx_INCREF(__pyx_v_fwords);
         PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_v_fwords);
@@ -45335,7 +45830,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
         __Pyx_GIVEREF(__pyx_t_3);
         __pyx_t_7 = 0;
         __pyx_t_3 = 0;
-        __pyx_t_3 = PyObject_Call(__pyx_t_8, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_Call(__pyx_t_8, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
@@ -45343,7 +45838,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
           __pyx_t_6 = __pyx_t_3; __Pyx_INCREF(__pyx_t_6); __pyx_t_10 = 0;
           __pyx_t_11 = NULL;
         } else {
-          __pyx_t_10 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_6);
           __pyx_t_11 = Py_TYPE(__pyx_t_6)->tp_iternext;
         }
@@ -45352,23 +45847,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
           if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_6)) {
             if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_6)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_3 = PyList_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyList_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_6)) {
             if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_6)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else {
             __pyx_t_3 = __pyx_t_11(__pyx_t_6);
             if (unlikely(!__pyx_t_3)) {
               if (PyErr_Occurred()) {
                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               break;
             }
@@ -45378,24 +45873,24 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
           __pyx_v_ifromchild = __pyx_t_3;
           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":893
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":914
  *                 else:
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  *                         if (ifromchild not in ret):             # <<<<<<<<<<<<<<
  *                             ret.append(ifromchild)
  * 
  */
-          __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifromchild, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifromchild, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           if (__pyx_t_4) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":894
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  *                         if (ifromchild not in ret):
  *                             ret.append(ifromchild)             # <<<<<<<<<<<<<<
  * 
  *         return ret
  */
-            __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifromchild); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifromchild); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             goto __pyx_L11;
           }
           __pyx_L11:;
@@ -45408,7 +45903,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":896
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
  *                             ret.append(ifromchild)
  * 
  *         return ret             # <<<<<<<<<<<<<<
@@ -45469,16 +45964,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ifrom)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ito)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "shortest") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "shortest") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
       goto __pyx_L5_argtuple_error;
@@ -45493,7 +45988,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.shortest", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -45504,7 +45999,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":898
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
  *         return ret
  * 
  *     def shortest(self, fwords, ifrom, ito):             # <<<<<<<<<<<<<<
@@ -45529,7 +46024,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("shortest", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":900
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":921
  *     def shortest(self, fwords, ifrom, ito):
  *         cdef unsigned alt_id
  *         min = 1000             # <<<<<<<<<<<<<<
@@ -45539,19 +46034,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
   __Pyx_INCREF(__pyx_int_1000);
   __pyx_v_min = __pyx_int_1000;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":901
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":922
  *         cdef unsigned alt_id
  *         min = 1000
  *         if (ifrom > ito):             # <<<<<<<<<<<<<<
  *             return min
  *         if (ifrom == ito):
  */
-  __pyx_t_1 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_v_ito, Py_GT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_v_ito, Py_GT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":902
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":923
  *         min = 1000
  *         if (ifrom > ito):
  *             return min             # <<<<<<<<<<<<<<
@@ -45566,19 +46061,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":903
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":924
  *         if (ifrom > ito):
  *             return min
  *         if (ifrom == ito):             # <<<<<<<<<<<<<<
  *             return 0
  *         for alt_id in range(len(fwords[ifrom])):
  */
-  __pyx_t_1 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_v_ito, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 903; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_RichCompare(__pyx_v_ifrom, __pyx_v_ito, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":904
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":925
  *             return min
  *         if (ifrom == ito):
  *             return 0             # <<<<<<<<<<<<<<
@@ -45593,41 +46088,41 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":905
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":926
  *         if (ifrom == ito):
  *             return 0
  *         for alt_id in range(len(fwords[ifrom])):             # <<<<<<<<<<<<<<
  *             currmin = self.shortest(fwords,ifrom+fwords[ifrom][alt_id][2],ito)
  *             if (fwords[ifrom][alt_id][0] != EPSILON):
  */
-  __pyx_t_1 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 926; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 926; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_alt_id = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":906
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":927
  *             return 0
  *         for alt_id in range(len(fwords[ifrom])):
  *             currmin = self.shortest(fwords,ifrom+fwords[ifrom][alt_id][2],ito)             # <<<<<<<<<<<<<<
  *             if (fwords[ifrom][alt_id][0] != EPSILON):
  *                 currmin += 1
  */
-    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__shortest); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__shortest); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_5 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_5, __pyx_v_alt_id, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_5, __pyx_v_alt_id, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_t_5 = __Pyx_GetItemInt(__pyx_t_6, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_GetItemInt(__pyx_t_6, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    __pyx_t_6 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_5); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_5); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_INCREF(__pyx_v_fwords);
     PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_v_fwords);
@@ -45638,7 +46133,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
     PyTuple_SET_ITEM(__pyx_t_5, 2, __pyx_v_ito);
     __Pyx_GIVEREF(__pyx_v_ito);
     __pyx_t_6 = 0;
-    __pyx_t_6 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
@@ -45646,38 +46141,38 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
     __pyx_v_currmin = __pyx_t_6;
     __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":907
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":928
  *         for alt_id in range(len(fwords[ifrom])):
  *             currmin = self.shortest(fwords,ifrom+fwords[ifrom][alt_id][2],ito)
  *             if (fwords[ifrom][alt_id][0] != EPSILON):             # <<<<<<<<<<<<<<
  *                 currmin += 1
  *             if (currmin<min):
  */
-    __pyx_t_6 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
-    __pyx_t_5 = __Pyx_GetItemInt(__pyx_t_6, __pyx_v_alt_id, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_GetItemInt(__pyx_t_6, __pyx_v_alt_id, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_5, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_5, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_t_5 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_1 = PyObject_RichCompare(__pyx_t_6, __pyx_t_5, Py_NE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_RichCompare(__pyx_t_6, __pyx_t_5, Py_NE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":908
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":929
  *             currmin = self.shortest(fwords,ifrom+fwords[ifrom][alt_id][2],ito)
  *             if (fwords[ifrom][alt_id][0] != EPSILON):
  *                 currmin += 1             # <<<<<<<<<<<<<<
  *             if (currmin<min):
  *                 min = currmin
  */
-      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_currmin, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_currmin, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_DECREF(__pyx_v_currmin);
       __pyx_v_currmin = __pyx_t_1;
@@ -45686,19 +46181,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
     }
     __pyx_L7:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":930
  *             if (fwords[ifrom][alt_id][0] != EPSILON):
  *                 currmin += 1
  *             if (currmin<min):             # <<<<<<<<<<<<<<
  *                 min = currmin
  *         return min
  */
-    __pyx_t_1 = PyObject_RichCompare(__pyx_v_currmin, __pyx_v_min, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_RichCompare(__pyx_v_currmin, __pyx_v_min, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":931
  *                 currmin += 1
  *             if (currmin<min):
  *                 min = currmin             # <<<<<<<<<<<<<<
@@ -45713,7 +46208,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
     __pyx_L8:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":911
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":932
  *             if (currmin<min):
  *                 min = currmin
  *         return min             # <<<<<<<<<<<<<<
@@ -45772,7 +46267,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_21get_next_states(PyObj
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__curr_idx)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("get_next_states", 0, 2, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("get_next_states", 0, 2, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 934; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (kw_args > 0) {
@@ -45781,7 +46276,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_21get_next_states(PyObj
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "get_next_states") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "get_next_states") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 934; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -45798,7 +46293,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_21get_next_states(PyObj
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("get_next_states", 0, 2, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("get_next_states", 0, 2, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 934; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.get_next_states", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -45809,7 +46304,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_21get_next_states(PyObj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":913
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":934
  *         return min
  * 
  *     def get_next_states(self, _columns, curr_idx, min_dist=2):             # <<<<<<<<<<<<<<
@@ -45842,26 +46337,26 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("get_next_states", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":914
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":935
  * 
  *     def get_next_states(self, _columns, curr_idx, min_dist=2):
  *         result = []             # <<<<<<<<<<<<<<
  *         candidate = [[curr_idx,0]]
  * 
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 935; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_result = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":936
  *     def get_next_states(self, _columns, curr_idx, min_dist=2):
  *         result = []
  *         candidate = [[curr_idx,0]]             # <<<<<<<<<<<<<<
  * 
  *         while len(candidate) > 0:
  */
-  __pyx_t_1 = PyList_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 936; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_INCREF(__pyx_v_curr_idx);
   PyList_SET_ITEM(__pyx_t_1, 0, __pyx_v_curr_idx);
@@ -45869,7 +46364,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
   __Pyx_INCREF(__pyx_int_0);
   PyList_SET_ITEM(__pyx_t_1, 1, __pyx_int_0);
   __Pyx_GIVEREF(__pyx_int_0);
-  __pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 936; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   PyList_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_t_1));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
@@ -45877,7 +46372,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
   __pyx_v_candidate = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":938
  *         candidate = [[curr_idx,0]]
  * 
  *         while len(candidate) > 0:             # <<<<<<<<<<<<<<
@@ -45885,43 +46380,43 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
  *             if curr[0] >= len(_columns):
  */
   while (1) {
-    __pyx_t_3 = PyList_GET_SIZE(((PyObject *)__pyx_v_candidate)); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 917; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyList_GET_SIZE(((PyObject *)__pyx_v_candidate)); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 938; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_t_4 = (__pyx_t_3 > 0);
     if (!__pyx_t_4) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":918
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":939
  * 
  *         while len(candidate) > 0:
  *             curr = candidate.pop()             # <<<<<<<<<<<<<<
  *             if curr[0] >= len(_columns):
  *                 continue
  */
-    __pyx_t_2 = __Pyx_PyObject_Pop(((PyObject *)__pyx_v_candidate)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 918; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_Pop(((PyObject *)__pyx_v_candidate)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 939; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_XDECREF(__pyx_v_curr);
     __pyx_v_curr = __pyx_t_2;
     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":940
  *         while len(candidate) > 0:
  *             curr = candidate.pop()
  *             if curr[0] >= len(_columns):             # <<<<<<<<<<<<<<
  *                 continue
  *             if curr[0] not in result and min_dist <= curr[1] <= self.max_initial_size:
  */
-    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_3 = PyObject_Length(__pyx_v__columns); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Length(__pyx_v__columns); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_5 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":920
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":941
  *             curr = candidate.pop()
  *             if curr[0] >= len(_columns):
  *                 continue             # <<<<<<<<<<<<<<
@@ -45933,30 +46428,30 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":921
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":942
  *             if curr[0] >= len(_columns):
  *                 continue
  *             if curr[0] not in result and min_dist <= curr[1] <= self.max_initial_size:             # <<<<<<<<<<<<<<
  *                 result.append(curr[0]);
  *             curr_col = _columns[curr[0]]
  */
-    __pyx_t_5 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
-    __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_t_5, ((PyObject *)__pyx_v_result), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_t_5, ((PyObject *)__pyx_v_result), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
     if (__pyx_t_4) {
-      __pyx_t_5 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_1 = PyObject_RichCompare(__pyx_v_min_dist, __pyx_t_5, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_RichCompare(__pyx_v_min_dist, __pyx_t_5, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       if (__Pyx_PyObject_IsTrue(__pyx_t_1)) {
         __Pyx_DECREF(__pyx_t_1);
-        __pyx_t_2 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyInt_FromLong(__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
-        __pyx_t_1 = PyObject_RichCompare(__pyx_t_5, __pyx_t_2, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_RichCompare(__pyx_t_5, __pyx_t_2, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       }
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       __pyx_t_7 = __pyx_t_6;
     } else {
@@ -45964,38 +46459,38 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":922
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":943
  *                 continue
  *             if curr[0] not in result and min_dist <= curr[1] <= self.max_initial_size:
  *                 result.append(curr[0]);             # <<<<<<<<<<<<<<
  *             curr_col = _columns[curr[0]]
  *             for alt in curr_col:
  */
-      __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
-      __pyx_t_8 = PyList_Append(__pyx_v_result, __pyx_t_1); if (unlikely(__pyx_t_8 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyList_Append(__pyx_v_result, __pyx_t_1); if (unlikely(__pyx_t_8 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       goto __pyx_L6;
     }
     __pyx_L6:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":923
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":944
  *             if curr[0] not in result and min_dist <= curr[1] <= self.max_initial_size:
  *                 result.append(curr[0]);
  *             curr_col = _columns[curr[0]]             # <<<<<<<<<<<<<<
  *             for alt in curr_col:
  *                 next_id = curr[0]+alt[2]
  */
-    __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_5 = PyObject_GetItem(__pyx_v__columns, __pyx_t_1); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_GetItem(__pyx_v__columns, __pyx_t_1); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     __Pyx_XDECREF(__pyx_v_curr_col);
     __pyx_v_curr_col = __pyx_t_5;
     __pyx_t_5 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":924
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":945
  *                 result.append(curr[0]);
  *             curr_col = _columns[curr[0]]
  *             for alt in curr_col:             # <<<<<<<<<<<<<<
@@ -46006,7 +46501,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       __pyx_t_5 = __pyx_v_curr_col; __Pyx_INCREF(__pyx_t_5); __pyx_t_3 = 0;
       __pyx_t_9 = NULL;
     } else {
-      __pyx_t_3 = -1; __pyx_t_5 = PyObject_GetIter(__pyx_v_curr_col); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = -1; __pyx_t_5 = PyObject_GetIter(__pyx_v_curr_col); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __pyx_t_9 = Py_TYPE(__pyx_t_5)->tp_iternext;
     }
@@ -46014,23 +46509,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       if (!__pyx_t_9 && PyList_CheckExact(__pyx_t_5)) {
         if (__pyx_t_3 >= PyList_GET_SIZE(__pyx_t_5)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_1 = PyList_GET_ITEM(__pyx_t_5, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyList_GET_ITEM(__pyx_t_5, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else if (!__pyx_t_9 && PyTuple_CheckExact(__pyx_t_5)) {
         if (__pyx_t_3 >= PyTuple_GET_SIZE(__pyx_t_5)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_5, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_5, __pyx_t_3); __Pyx_INCREF(__pyx_t_1); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PySequence_ITEM(__pyx_t_5, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else {
         __pyx_t_1 = __pyx_t_9(__pyx_t_5);
         if (unlikely(!__pyx_t_1)) {
           if (PyErr_Occurred()) {
             if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           break;
         }
@@ -46040,18 +46535,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       __pyx_v_alt = __pyx_t_1;
       __pyx_t_1 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":925
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":946
  *             curr_col = _columns[curr[0]]
  *             for alt in curr_col:
  *                 next_id = curr[0]+alt[2]             # <<<<<<<<<<<<<<
  *                 jump = 1
  *                 if (alt[0] == EPSILON):
  */
-      __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_alt, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_alt, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_10 = PyNumber_Add(__pyx_t_1, __pyx_t_2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = PyNumber_Add(__pyx_t_1, __pyx_t_2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -46059,7 +46554,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       __pyx_v_next_id = __pyx_t_10;
       __pyx_t_10 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":926
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":947
  *             for alt in curr_col:
  *                 next_id = curr[0]+alt[2]
  *                 jump = 1             # <<<<<<<<<<<<<<
@@ -46070,25 +46565,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       __Pyx_XDECREF(__pyx_v_jump);
       __pyx_v_jump = __pyx_int_1;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":927
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":948
  *                 next_id = curr[0]+alt[2]
  *                 jump = 1
  *                 if (alt[0] == EPSILON):             # <<<<<<<<<<<<<<
  *                     jump = 0
  *                 if next_id not in result and min_dist <= curr[1]+jump <= self.max_initial_size+1:
  */
-      __pyx_t_10 = __Pyx_GetItemInt(__pyx_v_alt, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = __Pyx_GetItemInt(__pyx_v_alt, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_1 = PyObject_RichCompare(__pyx_t_10, __pyx_t_2, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_RichCompare(__pyx_t_10, __pyx_t_2, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       if (__pyx_t_7) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":928
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":949
  *                 jump = 1
  *                 if (alt[0] == EPSILON):
  *                     jump = 0             # <<<<<<<<<<<<<<
@@ -46102,30 +46597,30 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       }
       __pyx_L9:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":929
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":950
  *                 if (alt[0] == EPSILON):
  *                     jump = 0
  *                 if next_id not in result and min_dist <= curr[1]+jump <= self.max_initial_size+1:             # <<<<<<<<<<<<<<
  *                     candidate.append([next_id,curr[1]+jump])
  *         return sorted(result);
  */
-      __pyx_t_7 = (__Pyx_PySequence_Contains(__pyx_v_next_id, ((PyObject *)__pyx_v_result), Py_NE)); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = (__Pyx_PySequence_Contains(__pyx_v_next_id, ((PyObject *)__pyx_v_result), Py_NE)); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       if (__pyx_t_7) {
-        __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_jump); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_jump); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-        __pyx_t_1 = PyObject_RichCompare(__pyx_v_min_dist, __pyx_t_2, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_RichCompare(__pyx_v_min_dist, __pyx_t_2, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__Pyx_PyObject_IsTrue(__pyx_t_1)) {
           __Pyx_DECREF(__pyx_t_1);
-          __pyx_t_10 = PyInt_FromLong((__pyx_v_self->max_initial_size + 1)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong((__pyx_v_self->max_initial_size + 1)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
-          __pyx_t_1 = PyObject_RichCompare(__pyx_t_2, __pyx_t_10, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = PyObject_RichCompare(__pyx_t_2, __pyx_t_10, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
         }
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-        __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __pyx_t_6 = __pyx_t_4;
       } else {
@@ -46133,19 +46628,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
       }
       if (__pyx_t_6) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":930
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":951
  *                     jump = 0
  *                 if next_id not in result and min_dist <= curr[1]+jump <= self.max_initial_size+1:
  *                     candidate.append([next_id,curr[1]+jump])             # <<<<<<<<<<<<<<
  *         return sorted(result);
  * 
  */
-        __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_curr, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_jump); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_jump); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-        __pyx_t_1 = PyList_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyList_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
         __Pyx_INCREF(__pyx_v_next_id);
         PyList_SET_ITEM(__pyx_t_1, 0, __pyx_v_next_id);
@@ -46153,7 +46648,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
         PyList_SET_ITEM(__pyx_t_1, 1, __pyx_t_2);
         __Pyx_GIVEREF(__pyx_t_2);
         __pyx_t_2 = 0;
-        __pyx_t_8 = PyList_Append(__pyx_v_candidate, ((PyObject *)__pyx_t_1)); if (unlikely(__pyx_t_8 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = PyList_Append(__pyx_v_candidate, ((PyObject *)__pyx_t_1)); if (unlikely(__pyx_t_8 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
         goto __pyx_L10;
       }
@@ -46163,7 +46658,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
     __pyx_L3_continue:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":931
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":952
  *                 if next_id not in result and min_dist <= curr[1]+jump <= self.max_initial_size+1:
  *                     candidate.append([next_id,curr[1]+jump])
  *         return sorted(result);             # <<<<<<<<<<<<<<
@@ -46171,12 +46666,12 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
  *     def input(self, fwords, meta):
  */
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_5);
   __Pyx_INCREF(((PyObject *)__pyx_v_result));
   PyTuple_SET_ITEM(__pyx_t_5, 0, ((PyObject *)__pyx_v_result));
   __Pyx_GIVEREF(((PyObject *)__pyx_v_result));
-  __pyx_t_1 = PyObject_Call(__pyx_builtin_sorted, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(__pyx_builtin_sorted, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
   __pyx_r = __pyx_t_1;
@@ -46235,11 +46730,11 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_23input(PyObject *__pyx
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__meta)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("input", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("input", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "input") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "input") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
       goto __pyx_L5_argtuple_error;
@@ -46252,7 +46747,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_23input(PyObject *__pyx
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("input", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("input", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -46264,30 +46759,30 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_23input(PyObject *__pyx
 }
 
 /* Python wrapper */
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda1(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
-static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda1 = {__Pyx_NAMESTR("lambda1"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda1, METH_NOARGS, __Pyx_DOCSTR(0)};
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda1(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda3(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda3 = {__Pyx_NAMESTR("lambda3"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda3, METH_NOARGS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_lambda3(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
-  __Pyx_RefNannySetupContext("lambda1 (wrapper)", 0);
-  __pyx_r = __pyx_lambda_funcdef_lambda1(__pyx_self);
+  __Pyx_RefNannySetupContext("lambda3 (wrapper)", 0);
+  __pyx_r = __pyx_lambda_funcdef_lambda3(__pyx_self);
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
 /* Python wrapper */
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
-static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2 = {__Pyx_NAMESTR("lambda2"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2, METH_NOARGS, __Pyx_DOCSTR(0)};
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda3_lambda4(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_7lambda3_lambda4 = {__Pyx_NAMESTR("lambda4"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda3_lambda4, METH_NOARGS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda3_lambda4(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused) {
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
-  __Pyx_RefNannySetupContext("lambda2 (wrapper)", 0);
-  __pyx_r = __pyx_lambda_funcdef_lambda2(__pyx_self);
+  __Pyx_RefNannySetupContext("lambda4 (wrapper)", 0);
+  __pyx_r = __pyx_lambda_funcdef_lambda4(__pyx_self);
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
  *                         if len(extracts) > 0:
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))             # <<<<<<<<<<<<<<
@@ -46295,7 +46790,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2
  *                                 fcount[f] += count
  */
 
-static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self) {
+static PyObject *__pyx_lambda_funcdef_lambda4(CYTHON_UNUSED PyObject *__pyx_self) {
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   PyObject *__pyx_t_1 = NULL;
@@ -46304,16 +46799,16 @@ static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
-  __Pyx_RefNannySetupContext("lambda2", 0);
+  __Pyx_RefNannySetupContext("lambda4", 0);
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_INCREF(((PyObject *)((PyObject*)(&PyList_Type))));
   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)((PyObject*)(&PyList_Type))));
   __Pyx_GIVEREF(((PyObject *)((PyObject*)(&PyList_Type))));
-  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -46327,7 +46822,7 @@ static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_XDECREF(__pyx_t_2);
   __Pyx_XDECREF(__pyx_t_3);
-  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda1.lambda2", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda3.lambda4", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
@@ -46335,7 +46830,7 @@ static PyObject *__pyx_lambda_funcdef_lambda2(CYTHON_UNUSED PyObject *__pyx_self
   return __pyx_r;
 }
 
-static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self) {
+static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self) {
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   PyObject *__pyx_t_1 = NULL;
@@ -46344,18 +46839,18 @@ static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
-  __Pyx_RefNannySetupContext("lambda1", 0);
+  __Pyx_RefNannySetupContext("lambda3", 0);
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_7lambda1_lambda2, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_7lambda3_lambda4, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_2);
   __Pyx_GIVEREF(__pyx_t_2);
   __pyx_t_2 = 0;
-  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
@@ -46369,7 +46864,7 @@ static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_XDECREF(__pyx_t_2);
   __Pyx_XDECREF(__pyx_t_3);
-  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda1", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda3", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
@@ -46378,18 +46873,18 @@ static PyObject *__pyx_lambda_funcdef_lambda1(CYTHON_UNUSED PyObject *__pyx_self
 }
 
 /* Python wrapper */
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda3(PyObject *__pyx_self, PyObject *__pyx_v_x); /*proto*/
-static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_1lambda3 = {__Pyx_NAMESTR("lambda3"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda3, METH_O, __Pyx_DOCSTR(0)};
-static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda3(PyObject *__pyx_self, PyObject *__pyx_v_x) {
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda5(PyObject *__pyx_self, PyObject *__pyx_v_x); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_1lambda5 = {__Pyx_NAMESTR("lambda5"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda5, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda5(PyObject *__pyx_self, PyObject *__pyx_v_x) {
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
-  __Pyx_RefNannySetupContext("lambda3 (wrapper)", 0);
-  __pyx_r = __pyx_lambda_funcdef_lambda3(__pyx_self, ((PyObject *)__pyx_v_x));
+  __Pyx_RefNannySetupContext("lambda5 (wrapper)", 0);
+  __pyx_r = __pyx_lambda_funcdef_lambda5(__pyx_self, ((PyObject *)__pyx_v_x));
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1099
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
  *                             for f, elist in fphrases.iteritems():
  *                                 for e, alslist in elist.iteritems():
  *                                     alignment, max_locs = max(alslist.iteritems(), key=lambda x: len(x[1]))             # <<<<<<<<<<<<<<
@@ -46397,7 +46892,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5input_1lambda3(PyObjec
  *                                     count = len(locs)
  */
 
-static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x) {
+static PyObject *__pyx_lambda_funcdef_lambda5(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x) {
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   PyObject *__pyx_t_1 = NULL;
@@ -46405,13 +46900,13 @@ static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
-  __Pyx_RefNannySetupContext("lambda3", 0);
+  __Pyx_RefNannySetupContext("lambda5", 0);
   __Pyx_XDECREF(__pyx_r);
-  __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_x, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_x, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_r = __pyx_t_1;
   __pyx_t_1 = 0;
@@ -46421,7 +46916,7 @@ static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
-  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda3", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.input.lambda5", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
   __Pyx_XGIVEREF(__pyx_r);
@@ -46429,7 +46924,7 @@ static PyObject *__pyx_lambda_funcdef_lambda3(CYTHON_UNUSED PyObject *__pyx_self
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":933
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":954
  *         return sorted(result);
  * 
  *     def input(self, fwords, meta):             # <<<<<<<<<<<<<<
@@ -46461,7 +46956,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_22input(struct __pyx_ob
   __Pyx_INCREF(__pyx_cur_scope->__pyx_v_meta);
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_meta);
   {
-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_cur_scope);
     __Pyx_RefNannyFinishContext();
     return (PyObject *) gen;
@@ -46521,19 +47016,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     return NULL;
   }
   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":944
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":965
  *         cdef Phrase hiero_phrase
  * 
  *         flen = len(fwords)             # <<<<<<<<<<<<<<
  *         start_time = monitor_cpu()
  *         self.extract_time = 0.0
  */
-  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_cur_scope->__pyx_v_flen = __pyx_t_1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":945
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":966
  * 
  *         flen = len(fwords)
  *         start_time = monitor_cpu()             # <<<<<<<<<<<<<<
@@ -46542,7 +47037,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
   __pyx_cur_scope->__pyx_v_start_time = __pyx_f_3_sa_monitor_cpu();
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":946
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":967
  *         flen = len(fwords)
  *         start_time = monitor_cpu()
  *         self.extract_time = 0.0             # <<<<<<<<<<<<<<
@@ -46551,20 +47046,20 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
   __pyx_cur_scope->__pyx_v_self->extract_time = 0.0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":947
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":968
  *         start_time = monitor_cpu()
  *         self.extract_time = 0.0
  *         nodes_isteps_away_buffer = {}             # <<<<<<<<<<<<<<
  *         hit = 0
  *         reachable_buffer = {}
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 947; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 968; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":948
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":969
  *         self.extract_time = 0.0
  *         nodes_isteps_away_buffer = {}
  *         hit = 0             # <<<<<<<<<<<<<<
@@ -46573,33 +47068,33 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
   __pyx_cur_scope->__pyx_v_hit = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":949
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":970
  *         nodes_isteps_away_buffer = {}
  *         hit = 0
  *         reachable_buffer = {}             # <<<<<<<<<<<<<<
  * 
  *         # Do not cache between sentences
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 949; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __pyx_cur_scope->__pyx_v_reachable_buffer = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":952
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":973
  * 
  *         # Do not cache between sentences
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())             # <<<<<<<<<<<<<<
  * 
  *         frontier = []
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __Pyx_GIVEREF(__pyx_t_3);
@@ -46608,91 +47103,91 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   __pyx_cur_scope->__pyx_v_self->rules->root = __pyx_t_3;
   __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":954
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":975
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  * 
  *         frontier = []             # <<<<<<<<<<<<<<
  *         for i in range(len(fwords)):
  *             for alt in range(0, len(fwords[i])):
  */
-  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_GIVEREF(((PyObject *)__pyx_t_3));
   __pyx_cur_scope->__pyx_v_frontier = __pyx_t_3;
   __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":955
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":976
  * 
  *         frontier = []
  *         for i in range(len(fwords)):             # <<<<<<<<<<<<<<
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:
  */
-  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 955; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 976; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_1; __pyx_t_4+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":956
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":977
  *         frontier = []
  *         for i in range(len(fwords)):
  *             for alt in range(0, len(fwords[i])):             # <<<<<<<<<<<<<<
  *                 if fwords[i][alt][0] != EPSILON:
  *                     frontier.append((i, i, (i,), alt, 0, self.rules.root, (), False))
  */
-    __pyx_t_3 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 977; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_5 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 977; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
       __pyx_cur_scope->__pyx_v_alt = __pyx_t_6;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":957
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":978
  *         for i in range(len(fwords)):
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:             # <<<<<<<<<<<<<<
  *                     frontier.append((i, i, (i,), alt, 0, self.rules.root, (), False))
  * 
  */
-      __pyx_t_3 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_2, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_2, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_7 = PyObject_RichCompare(__pyx_t_3, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_RichCompare(__pyx_t_3, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       if (__pyx_t_8) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":958
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":979
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:
  *                     frontier.append((i, i, (i,), alt, 0, self.rules.root, (), False))             # <<<<<<<<<<<<<<
  * 
  *         xroot = None
  */
-        __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
-        __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
-        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_9);
         PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_t_3);
         __Pyx_GIVEREF(__pyx_t_3);
         __pyx_t_3 = 0;
-        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_10 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
-        __pyx_t_11 = PyTuple_New(8); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyTuple_New(8); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
         PyTuple_SET_ITEM(__pyx_t_11, 0, __pyx_t_7);
         __Pyx_GIVEREF(__pyx_t_7);
@@ -46718,7 +47213,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __pyx_t_9 = 0;
         __pyx_t_3 = 0;
         __pyx_t_10 = 0;
-        __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_11)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_11)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
         goto __pyx_L8;
       }
@@ -46726,7 +47221,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":960
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":981
  *                     frontier.append((i, i, (i,), alt, 0, self.rules.root, (), False))
  * 
  *         xroot = None             # <<<<<<<<<<<<<<
@@ -46737,7 +47232,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   __Pyx_GIVEREF(Py_None);
   __pyx_cur_scope->__pyx_v_xroot = Py_None;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":961
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":982
  * 
  *         xroot = None
  *         x1 = sym_setindex(self.category, 1)             # <<<<<<<<<<<<<<
@@ -46746,32 +47241,32 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
   __pyx_cur_scope->__pyx_v_x1 = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":962
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":983
  *         xroot = None
  *         x1 = sym_setindex(self.category, 1)
  *         if x1 in self.rules.root.children:             # <<<<<<<<<<<<<<
  *             xroot = self.rules.root.children[x1]
  *         else:
  */
-  __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_x1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_x1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_11);
-  __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_10);
-  __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_t_11, __pyx_t_10, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_t_11, __pyx_t_10, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
   if (__pyx_t_8) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":963
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":984
  *         x1 = sym_setindex(self.category, 1)
  *         if x1 in self.rules.root.children:
  *             xroot = self.rules.root.children[x1]             # <<<<<<<<<<<<<<
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())
  */
-    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
-    __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_11);
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
     __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_xroot);
@@ -46783,21 +47278,21 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":965
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":986
  *             xroot = self.rules.root.children[x1]
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())             # <<<<<<<<<<<<<<
  *             self.rules.root.children[x1] = xroot
  * 
  */
-    __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_self->rules->root) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_self->rules->root) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
-    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
-    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
     __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
     __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_xroot);
@@ -46806,101 +47301,101 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     __pyx_cur_scope->__pyx_v_xroot = __pyx_t_10;
     __pyx_t_10 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":966
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":987
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())
  *             self.rules.root.children[x1] = xroot             # <<<<<<<<<<<<<<
  * 
  *         for i in range(self.min_gap_size, len(fwords)):
  */
-    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 966; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
-    if (__Pyx_SetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, __pyx_cur_scope->__pyx_v_xroot, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 966; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_SetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, __pyx_cur_scope->__pyx_v_xroot, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
   }
   __pyx_L9:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":968
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":989
  *             self.rules.root.children[x1] = xroot
  * 
  *         for i in range(self.min_gap_size, len(fwords)):             # <<<<<<<<<<<<<<
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:
  */
-  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 968; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 989; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   for (__pyx_t_4 = __pyx_cur_scope->__pyx_v_self->min_gap_size; __pyx_t_4 < __pyx_t_1; __pyx_t_4+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":969
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":990
  * 
  *         for i in range(self.min_gap_size, len(fwords)):
  *             for alt in range(0, len(fwords[i])):             # <<<<<<<<<<<<<<
  *                 if fwords[i][alt][0] != EPSILON:
  *                     frontier.append((i-self.min_gap_size, i, (i,), alt, self.min_gap_size, xroot, (x1,), True))
  */
-    __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 990; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
-    __pyx_t_5 = PyObject_Length(__pyx_t_10); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Length(__pyx_t_10); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 990; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
     for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
       __pyx_cur_scope->__pyx_v_alt = __pyx_t_6;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":970
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":991
  *         for i in range(self.min_gap_size, len(fwords)):
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:             # <<<<<<<<<<<<<<
  *                     frontier.append((i-self.min_gap_size, i, (i,), alt, self.min_gap_size, xroot, (x1,), True))
  * 
  */
-      __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
-      __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_11);
       __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
-      __pyx_t_10 = __Pyx_GetItemInt(__pyx_t_11, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = __Pyx_GetItemInt(__pyx_t_11, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_10);
       __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-      __pyx_t_11 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_11);
-      __pyx_t_3 = PyObject_RichCompare(__pyx_t_10, __pyx_t_11, Py_NE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_RichCompare(__pyx_t_10, __pyx_t_11, Py_NE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
       __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
       if (__pyx_t_8) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":971
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":992
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:
  *                     frontier.append((i-self.min_gap_size, i, (i,), alt, self.min_gap_size, xroot, (x1,), True))             # <<<<<<<<<<<<<<
  * 
  *         next_states = []
  */
-        __pyx_t_3 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_i - __pyx_cur_scope->__pyx_v_self->min_gap_size)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_i - __pyx_cur_scope->__pyx_v_self->min_gap_size)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
-        __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
-        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_9);
         PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_t_10);
         __Pyx_GIVEREF(__pyx_t_10);
         __pyx_t_10 = 0;
-        __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
-        __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
-        __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_x1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_x1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
-        __pyx_t_13 = PyTuple_New(1); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_13 = PyTuple_New(1); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_13);
         PyTuple_SET_ITEM(__pyx_t_13, 0, __pyx_t_7);
         __Pyx_GIVEREF(__pyx_t_7);
         __pyx_t_7 = 0;
-        __pyx_t_7 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
-        __pyx_t_14 = PyTuple_New(8); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_14 = PyTuple_New(8); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_14);
         PyTuple_SET_ITEM(__pyx_t_14, 0, __pyx_t_3);
         __Pyx_GIVEREF(__pyx_t_3);
@@ -46926,7 +47421,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __pyx_t_2 = 0;
         __pyx_t_13 = 0;
         __pyx_t_7 = 0;
-        __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_14)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 971; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_14)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
         goto __pyx_L14;
       }
@@ -46934,44 +47429,44 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":973
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":994
  *                     frontier.append((i-self.min_gap_size, i, (i,), alt, self.min_gap_size, xroot, (x1,), True))
  * 
  *         next_states = []             # <<<<<<<<<<<<<<
  *         for i in range(len(fwords)):
  *             next_states.append(self.get_next_states(fwords,i,self.min_gap_size))
  */
-  __pyx_t_14 = PyList_New(0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_14 = PyList_New(0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 994; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_14);
   __Pyx_GIVEREF(((PyObject *)__pyx_t_14));
   __pyx_cur_scope->__pyx_v_next_states = __pyx_t_14;
   __pyx_t_14 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":974
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":995
  * 
  *         next_states = []
  *         for i in range(len(fwords)):             # <<<<<<<<<<<<<<
  *             next_states.append(self.get_next_states(fwords,i,self.min_gap_size))
  * 
  */
-  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 974; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 995; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_1; __pyx_t_4+=1) {
     __pyx_cur_scope->__pyx_v_i = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":975
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":996
  *         next_states = []
  *         for i in range(len(fwords)):
  *             next_states.append(self.get_next_states(fwords,i,self.min_gap_size))             # <<<<<<<<<<<<<<
  * 
  *         while len(frontier) > 0:
  */
-    __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__get_next_states); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__get_next_states); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_14);
-    __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_7);
-    __pyx_t_13 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_13 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_13);
-    __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_INCREF(__pyx_cur_scope->__pyx_v_fwords);
     PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_fwords);
@@ -46982,15 +47477,15 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     __Pyx_GIVEREF(__pyx_t_13);
     __pyx_t_7 = 0;
     __pyx_t_13 = 0;
-    __pyx_t_13 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_13 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_13);
     __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
-    __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_next_states, __pyx_t_13); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 975; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_next_states, __pyx_t_13); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":977
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":998
  *             next_states.append(self.get_next_states(fwords,i,self.min_gap_size))
  * 
  *         while len(frontier) > 0:             # <<<<<<<<<<<<<<
@@ -46998,18 +47493,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  *             for k, i, input_match, alt, pathlen, node, prefix, is_shadow_path in frontier:
  */
   while (1) {
-    __pyx_t_1 = PyList_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_frontier)); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 977; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyList_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_frontier)); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 998; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_t_8 = (__pyx_t_1 > 0);
     if (!__pyx_t_8) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":978
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":999
  * 
  *         while len(frontier) > 0:
  *             new_frontier = []             # <<<<<<<<<<<<<<
  *             for k, i, input_match, alt, pathlen, node, prefix, is_shadow_path in frontier:
  *                 word_id = fwords[i][alt][0]
  */
-    __pyx_t_13 = PyList_New(0); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_13 = PyList_New(0); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_13);
     __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_new_frontier));
     __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_new_frontier));
@@ -47017,7 +47512,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     __pyx_cur_scope->__pyx_v_new_frontier = __pyx_t_13;
     __pyx_t_13 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":979
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1000
  *         while len(frontier) > 0:
  *             new_frontier = []
  *             for k, i, input_match, alt, pathlen, node, prefix, is_shadow_path in frontier:             # <<<<<<<<<<<<<<
@@ -47028,9 +47523,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     for (;;) {
       if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_13)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_2 = PyList_GET_ITEM(__pyx_t_13, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyList_GET_ITEM(__pyx_t_13, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #else
-      __pyx_t_2 = PySequence_ITEM(__pyx_t_13, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_13, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       #endif
       if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
         PyObject* sequence = __pyx_t_2;
@@ -47042,7 +47537,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         if (unlikely(size != 8)) {
           if (size > 8) __Pyx_RaiseTooManyValuesError(8);
           else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-          {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         }
         #if CYTHON_COMPILING_IN_CPYTHON
         if (likely(PyTuple_CheckExact(sequence))) {
@@ -47076,7 +47571,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         Py_ssize_t i;
         PyObject** temps[8] = {&__pyx_t_14,&__pyx_t_7,&__pyx_t_10,&__pyx_t_9,&__pyx_t_11,&__pyx_t_3,&__pyx_t_15,&__pyx_t_16};
         for (i=0; i < 8; i++) {
-          PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           *(temps[i]) = item;
         }
         #endif
@@ -47085,7 +47580,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       {
         Py_ssize_t index = -1;
         PyObject** temps[8] = {&__pyx_t_14,&__pyx_t_7,&__pyx_t_10,&__pyx_t_9,&__pyx_t_11,&__pyx_t_3,&__pyx_t_15,&__pyx_t_16};
-        __pyx_t_17 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_17)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_17 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_17)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_17);
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
         __pyx_t_18 = Py_TYPE(__pyx_t_17)->tp_iternext;
@@ -47094,7 +47589,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __Pyx_GOTREF(item);
           *(temps[index]) = item;
         }
-        if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_17), 8) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_17), 8) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_18 = NULL;
         __Pyx_DECREF(__pyx_t_17); __pyx_t_17 = 0;
         goto __pyx_L22_unpacking_done;
@@ -47102,14 +47597,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __Pyx_DECREF(__pyx_t_17); __pyx_t_17 = 0;
         __pyx_t_18 = NULL;
         if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_L22_unpacking_done:;
       }
-      __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_14); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_14); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
-      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_t_7); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_t_7); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-      __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_9); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_9); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
       __pyx_cur_scope->__pyx_v_k = __pyx_t_4;
       __pyx_cur_scope->__pyx_v_i = __pyx_t_6;
@@ -47140,19 +47635,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_is_shadow_path = __pyx_t_16;
       __pyx_t_16 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":980
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1001
  *             new_frontier = []
  *             for k, i, input_match, alt, pathlen, node, prefix, is_shadow_path in frontier:
  *                 word_id = fwords[i][alt][0]             # <<<<<<<<<<<<<<
  *                 spanlen = fwords[i][alt][2]
  *                 # TODO get rid of k -- pathlen is replacing it
  */
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 980; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1001; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_16 = __Pyx_GetItemInt(__pyx_t_2, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 980; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = __Pyx_GetItemInt(__pyx_t_2, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1001; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_16, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 980; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_16, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1001; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
       __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_word_id);
@@ -47161,19 +47656,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_word_id = __pyx_t_2;
       __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":981
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1002
  *             for k, i, input_match, alt, pathlen, node, prefix, is_shadow_path in frontier:
  *                 word_id = fwords[i][alt][0]
  *                 spanlen = fwords[i][alt][2]             # <<<<<<<<<<<<<<
  *                 # TODO get rid of k -- pathlen is replacing it
  *                 if word_id == EPSILON:
  */
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_16 = __Pyx_GetItemInt(__pyx_t_2, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = __Pyx_GetItemInt(__pyx_t_2, __pyx_cur_scope->__pyx_v_alt, sizeof(int), PyInt_FromLong); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_16, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_16, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
       __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_spanlen);
@@ -47182,44 +47677,44 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_spanlen = __pyx_t_2;
       __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":983
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1004
  *                 spanlen = fwords[i][alt][2]
  *                 # TODO get rid of k -- pathlen is replacing it
  *                 if word_id == EPSILON:             # <<<<<<<<<<<<<<
  *                     # skipping because word_id is epsilon
  *                     if i+spanlen >= len(fwords):
  */
-      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_v_3_sa_EPSILON); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1004; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_16 = PyObject_RichCompare(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_2, Py_EQ); __Pyx_XGOTREF(__pyx_t_16); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyObject_RichCompare(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_2, Py_EQ); __Pyx_XGOTREF(__pyx_t_16); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1004; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_16); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_16); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1004; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
       if (__pyx_t_8) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":985
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1006
  *                 if word_id == EPSILON:
  *                     # skipping because word_id is epsilon
  *                     if i+spanlen >= len(fwords):             # <<<<<<<<<<<<<<
  *                         continue
  *                     for nualt in range(0,len(fwords[i+spanlen])):
  */
-        __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_16);
-        __pyx_t_2 = PyNumber_Add(__pyx_t_16, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyNumber_Add(__pyx_t_16, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-        __pyx_t_5 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        __pyx_t_16 = PyInt_FromSsize_t(__pyx_t_5); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyInt_FromSsize_t(__pyx_t_5); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_16);
-        __pyx_t_15 = PyObject_RichCompare(__pyx_t_2, __pyx_t_16, Py_GE); __Pyx_XGOTREF(__pyx_t_15); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_15 = PyObject_RichCompare(__pyx_t_2, __pyx_t_16, Py_GE); __Pyx_XGOTREF(__pyx_t_15); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_15); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 985; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_15); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":986
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1007
  *                     # skipping because word_id is epsilon
  *                     if i+spanlen >= len(fwords):
  *                         continue             # <<<<<<<<<<<<<<
@@ -47231,43 +47726,43 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         __pyx_L24:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":987
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1008
  *                     if i+spanlen >= len(fwords):
  *                         continue
  *                     for nualt in range(0,len(fwords[i+spanlen])):             # <<<<<<<<<<<<<<
  *                         frontier.append((k, i+spanlen, input_match, nualt, pathlen, node, prefix, is_shadow_path))
  *                     continue
  */
-        __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_15);
-        __pyx_t_16 = PyNumber_Add(__pyx_t_15, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyNumber_Add(__pyx_t_15, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_16);
         __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-        __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fwords, __pyx_t_16); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fwords, __pyx_t_16); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_15);
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-        __pyx_t_5 = PyObject_Length(__pyx_t_15); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyObject_Length(__pyx_t_15); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
         for (__pyx_t_19 = 0; __pyx_t_19 < __pyx_t_5; __pyx_t_19+=1) {
           __pyx_cur_scope->__pyx_v_nualt = __pyx_t_19;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":988
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1009
  *                         continue
  *                     for nualt in range(0,len(fwords[i+spanlen])):
  *                         frontier.append((k, i+spanlen, input_match, nualt, pathlen, node, prefix, is_shadow_path))             # <<<<<<<<<<<<<<
  *                     continue
  * 
  */
-          __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_15);
-          __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_2 = PyNumber_Add(__pyx_t_16, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyNumber_Add(__pyx_t_16, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_nualt); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_nualt); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_3 = PyTuple_New(8); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyTuple_New(8); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_15);
           __Pyx_GIVEREF(__pyx_t_15);
@@ -47293,11 +47788,11 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_15 = 0;
           __pyx_t_2 = 0;
           __pyx_t_16 = 0;
-          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_3)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 988; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_3)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
         }
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":989
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1010
  *                     for nualt in range(0,len(fwords[i+spanlen])):
  *                         frontier.append((k, i+spanlen, input_match, nualt, pathlen, node, prefix, is_shadow_path))
  *                     continue             # <<<<<<<<<<<<<<
@@ -47309,19 +47804,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       __pyx_L23:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":991
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1012
  *                     continue
  * 
  *                 phrase = prefix + (word_id,)             # <<<<<<<<<<<<<<
  *                 hiero_phrase = Phrase(phrase)
  *                 arity = hiero_phrase.arity()
  */
-      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1012; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_INCREF(__pyx_cur_scope->__pyx_v_word_id);
       PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_cur_scope->__pyx_v_word_id);
       __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_word_id);
-      __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_prefix, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_prefix, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1012; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
       __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
       __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_phrase);
@@ -47330,19 +47825,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_phrase = __pyx_t_16;
       __pyx_t_16 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":992
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1013
  * 
  *                 phrase = prefix + (word_id,)
  *                 hiero_phrase = Phrase(phrase)             # <<<<<<<<<<<<<<
  *                 arity = hiero_phrase.arity()
  * 
  */
-      __pyx_t_16 = PyTuple_New(1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyTuple_New(1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
       __Pyx_INCREF(__pyx_cur_scope->__pyx_v_phrase);
       PyTuple_SET_ITEM(__pyx_t_16, 0, __pyx_cur_scope->__pyx_v_phrase);
       __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_phrase);
-      __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(((PyObject *)__pyx_t_16)); __pyx_t_16 = 0;
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase));
@@ -47351,23 +47846,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_hiero_phrase = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_3);
       __pyx_t_3 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":993
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1014
  *                 phrase = prefix + (word_id,)
  *                 hiero_phrase = Phrase(phrase)
  *                 arity = hiero_phrase.arity()             # <<<<<<<<<<<<<<
  * 
  *                 lookup_required = False
  */
-      __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase), __pyx_n_s__arity); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase), __pyx_n_s__arity); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      __pyx_t_16 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
       __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-      __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_16); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_16); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
       __pyx_cur_scope->__pyx_v_arity = __pyx_t_19;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":995
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1016
  *                 arity = hiero_phrase.arity()
  * 
  *                 lookup_required = False             # <<<<<<<<<<<<<<
@@ -47376,36 +47871,36 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
       __pyx_cur_scope->__pyx_v_lookup_required = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":996
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1017
  * 
  *                 lookup_required = False
  *                 if word_id in node.children:             # <<<<<<<<<<<<<<
  *                     if node.children[word_id] is None:
  *                         # Path dead-ends at this node
  */
-      __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_16);
-      __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_16, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 996; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_16, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
       if (__pyx_t_8) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":997
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1018
  *                 lookup_required = False
  *                 if word_id in node.children:
  *                     if node.children[word_id] is None:             # <<<<<<<<<<<<<<
  *                         # Path dead-ends at this node
  *                         continue
  */
-        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 997; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_16);
-        __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 997; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
         __pyx_t_8 = (__pyx_t_3 == Py_None);
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":999
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1020
  *                     if node.children[word_id] is None:
  *                         # Path dead-ends at this node
  *                         continue             # <<<<<<<<<<<<<<
@@ -47417,16 +47912,16 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1002
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1023
  *                     else:
  *                         # Path continues at this node
  *                         node = node.children[word_id]             # <<<<<<<<<<<<<<
  *                 else:
  *                     if node.suffix_link is None:
  */
-          __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1023; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
-          __pyx_t_16 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1023; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_node);
@@ -47440,20 +47935,20 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1004
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1025
  *                         node = node.children[word_id]
  *                 else:
  *                     if node.suffix_link is None:             # <<<<<<<<<<<<<<
  *                         # Current node is root; lookup required
  *                         lookup_required = True
  */
-        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1004; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_16);
         __pyx_t_8 = (__pyx_t_16 == Py_None);
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1006
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1027
  *                     if node.suffix_link is None:
  *                         # Current node is root; lookup required
  *                         lookup_required = True             # <<<<<<<<<<<<<<
@@ -47465,54 +47960,54 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1008
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1029
  *                         lookup_required = True
  *                     else:
  *                         if word_id in node.suffix_link.children:             # <<<<<<<<<<<<<<
  *                             if node.suffix_link.children[word_id] is None:
  *                                 # Suffix link reports path is dead end
  */
-          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_3 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_3, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_3, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1009
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1030
  *                     else:
  *                         if word_id in node.suffix_link.children:
  *                             if node.suffix_link.children[word_id] is None:             # <<<<<<<<<<<<<<
  *                                 # Suffix link reports path is dead end
  *                                 node.children[word_id] = None
  */
-            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            __pyx_t_16 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_16 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_16);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-            __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
             __pyx_t_8 = (__pyx_t_3 == Py_None);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1011
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1032
  *                             if node.suffix_link.children[word_id] is None:
  *                                 # Suffix link reports path is dead end
  *                                 node.children[word_id] = None             # <<<<<<<<<<<<<<
  *                                 continue
  *                             else:
  */
-              __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1032; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_3);
-              if (PyObject_SetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyObject_SetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1032; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1012
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1033
  *                                 # Suffix link reports path is dead end
  *                                 node.children[word_id] = None
  *                                 continue             # <<<<<<<<<<<<<<
@@ -47524,7 +48019,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1015
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1036
  *                             else:
  *                                 # Suffix link indicates lookup is reqired
  *                                 lookup_required = True             # <<<<<<<<<<<<<<
@@ -47538,18 +48033,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1018
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
  *                         else:
  *                             #ERROR: We never get here
  *                             raise Exception("Keyword trie error")             # <<<<<<<<<<<<<<
  *                 # checking whether lookup_required
  *                 if lookup_required:
  */
-            __pyx_t_3 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_122), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_122), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_Raise(__pyx_t_3, 0, 0, 0);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           __pyx_L30:;
         }
@@ -47557,7 +48052,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       __pyx_L27:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1020
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
  *                             raise Exception("Keyword trie error")
  *                 # checking whether lookup_required
  *                 if lookup_required:             # <<<<<<<<<<<<<<
@@ -47566,7 +48061,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
       if (__pyx_cur_scope->__pyx_v_lookup_required) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1021
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1042
  *                 # checking whether lookup_required
  *                 if lookup_required:
  *                     new_node = None             # <<<<<<<<<<<<<<
@@ -47579,66 +48074,66 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __Pyx_GIVEREF(Py_None);
         __pyx_cur_scope->__pyx_v_new_node = Py_None;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1022
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1043
  *                 if lookup_required:
  *                     new_node = None
  *                     if is_shadow_path:             # <<<<<<<<<<<<<<
  *                         # Extending shadow path
  *                         # on the shadow path we don't do any search, we just use info from suffix link
  */
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1022; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1025
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
  *                         # Extending shadow path
  *                         # on the shadow path we don't do any search, we just use info from suffix link
  *                         new_node = ExtendedTrieNode(phrase_location=node.suffix_link.children[word_id].phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=node.suffix_link.children[word_id],
  *                                 phrase=hiero_phrase)
  */
-          __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_3));
-          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_2 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          __pyx_t_16 = PyObject_GetItem(__pyx_t_2, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetItem(__pyx_t_2, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-          __pyx_t_2 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1026
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1047
  *                         # on the shadow path we don't do any search, we just use info from suffix link
  *                         new_node = ExtendedTrieNode(phrase_location=node.suffix_link.children[word_id].phrase_location,
  *                                 suffix_link=node.suffix_link.children[word_id],             # <<<<<<<<<<<<<<
  *                                 phrase=hiero_phrase)
  *                     else:
  */
-          __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1026; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_16 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1026; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-          __pyx_t_2 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1026; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1027
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1048
  *                         new_node = ExtendedTrieNode(phrase_location=node.suffix_link.children[word_id].phrase_location,
  *                                 suffix_link=node.suffix_link.children[word_id],
  *                                 phrase=hiero_phrase)             # <<<<<<<<<<<<<<
  *                     else:
  *                         if arity > 0:
  */
-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_new_node);
@@ -47650,7 +48145,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1029
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1050
  *                                 phrase=hiero_phrase)
  *                     else:
  *                         if arity > 0:             # <<<<<<<<<<<<<<
@@ -47660,22 +48155,22 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_8 = (__pyx_cur_scope->__pyx_v_arity > 0);
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1031
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1052
  *                         if arity > 0:
  *                             # Intersecting because of arity > 0
  *                             phrase_location = self.intersect(node, node.suffix_link.children[word_id], hiero_phrase)             # <<<<<<<<<<<<<<
  *                         else:
  *                             # Suffix array search
  */
-            __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1031; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1031; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-            __pyx_t_2 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1031; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-            __pyx_t_3 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->intersect(__pyx_cur_scope->__pyx_v_self, __pyx_cur_scope->__pyx_v_node, __pyx_t_2, __pyx_cur_scope->__pyx_v_hiero_phrase)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1031; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->intersect(__pyx_cur_scope->__pyx_v_self, __pyx_cur_scope->__pyx_v_node, __pyx_t_2, __pyx_cur_scope->__pyx_v_hiero_phrase)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
             __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location));
@@ -47687,45 +48182,45 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1034
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1055
  *                         else:
  *                             # Suffix array search
  *                             phrase_location = node.phrase_location             # <<<<<<<<<<<<<<
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)
  *                             if sa_range is not None:
  */
-            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1034; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1034; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location));
             __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location));
             __Pyx_GIVEREF(__pyx_t_3);
             __pyx_cur_scope->__pyx_v_phrase_location = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_3);
             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1035
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1056
  *                             # Suffix array search
  *                             phrase_location = node.phrase_location
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)             # <<<<<<<<<<<<<<
  *                             if sa_range is not None:
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])
  */
-            __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self->fsa), __pyx_n_s__lookup); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self->fsa), __pyx_n_s__lookup); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_phrase, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_phrase, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_2); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_2); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-            __pyx_t_2 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_19)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_19)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-            __pyx_t_5 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-            __pyx_t_16 = PyInt_FromSsize_t((__pyx_t_5 - 1)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_5 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_16 = PyInt_FromSsize_t((__pyx_t_5 - 1)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_16);
-            __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
-            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_high); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_high); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_9 = PyTuple_New(4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyTuple_New(4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_2));
             __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
@@ -47739,7 +48234,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_16 = 0;
             __pyx_t_15 = 0;
             __pyx_t_11 = 0;
-            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
             __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
@@ -47749,7 +48244,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_sa_range = __pyx_t_11;
             __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1036
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1057
  *                             phrase_location = node.phrase_location
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)
  *                             if sa_range is not None:             # <<<<<<<<<<<<<<
@@ -47759,24 +48254,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_8 = (__pyx_cur_scope->__pyx_v_sa_range != Py_None);
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1037
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1058
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)
  *                             if sa_range is not None:
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])             # <<<<<<<<<<<<<<
  *                             else:
  *                                 phrase_location = None
  */
-              __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
-              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_low), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_low), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
-              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_high), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_high), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-              __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
               __Pyx_GOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location));
@@ -47788,7 +48283,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1060
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])
  *                             else:
  *                                 phrase_location = None             # <<<<<<<<<<<<<<
@@ -47805,7 +48300,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L34:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
  *                                 phrase_location = None
  * 
  *                         if phrase_location is None:             # <<<<<<<<<<<<<<
@@ -47815,19 +48310,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_8 = (((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location) == Py_None);
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1042
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1063
  * 
  *                         if phrase_location is None:
  *                             node.children[word_id] = None             # <<<<<<<<<<<<<<
  *                             # Search failed
  *                             continue
  */
-            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1042; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
-            if (PyObject_SetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1042; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            if (PyObject_SetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1044
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
  *                             node.children[word_id] = None
  *                             # Search failed
  *                             continue             # <<<<<<<<<<<<<<
@@ -47839,7 +48334,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L36:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1067
  *                             continue
  *                         # Search succeeded
  *                         suffix_link = self.rules.root             # <<<<<<<<<<<<<<
@@ -47852,32 +48347,32 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_self->rules->root);
           __pyx_cur_scope->__pyx_v_suffix_link = __pyx_cur_scope->__pyx_v_self->rules->root;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1047
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1068
  *                         # Search succeeded
  *                         suffix_link = self.rules.root
  *                         if node.suffix_link is not None:             # <<<<<<<<<<<<<<
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  */
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1068; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __pyx_t_8 = (__pyx_t_9 != Py_None);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1048
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1069
  *                         suffix_link = self.rules.root
  *                         if node.suffix_link is not None:
  *                             suffix_link = node.suffix_link.children[word_id]             # <<<<<<<<<<<<<<
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,
  */
-            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
-            __pyx_t_11 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-            __pyx_t_9 = PyObject_GetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_suffix_link);
@@ -47889,35 +48384,35 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L37:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1049
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1070
  *                         if node.suffix_link is not None:
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)
  */
-          __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_9));
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase_location), ((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase_location), ((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1050
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1071
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,             # <<<<<<<<<<<<<<
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node
  */
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_suffix_link) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_suffix_link) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1051
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1072
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)             # <<<<<<<<<<<<<<
  *                     node.children[word_id] = new_node
  *                     node = new_node
  */
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_new_node);
@@ -47928,19 +48423,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         __pyx_L33:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1052
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1073
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node             # <<<<<<<<<<<<<<
  *                     node = new_node
  * 
  */
-        __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
-        if (PyObject_SetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id, __pyx_cur_scope->__pyx_v_new_node) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (PyObject_SetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id, __pyx_cur_scope->__pyx_v_new_node) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1053
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1074
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node
  *                     node = new_node             # <<<<<<<<<<<<<<
@@ -47953,7 +48448,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_new_node);
         __pyx_cur_scope->__pyx_v_node = __pyx_cur_scope->__pyx_v_new_node;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1058
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1079
  *                     This should happen before we get to extraction (so that
  *                     the node will exist if needed)'''
  *                     if arity < self.max_nonterminals:             # <<<<<<<<<<<<<<
@@ -47963,14 +48458,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __pyx_t_8 = (__pyx_cur_scope->__pyx_v_arity < __pyx_cur_scope->__pyx_v_self->max_nonterminals);
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1059
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1080
  *                     the node will exist if needed)'''
  *                     if arity < self.max_nonterminals:
  *                         xcat_index = arity+1             # <<<<<<<<<<<<<<
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index
  */
-          __pyx_t_11 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_arity + 1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1059; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_arity + 1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1080; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_xcat_index);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_xcat_index);
@@ -47978,17 +48473,17 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_xcat_index = __pyx_t_11;
           __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1060
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1081
  *                     if arity < self.max_nonterminals:
  *                         xcat_index = arity+1
  *                         xcat = sym_setindex(self.category, xcat_index)             # <<<<<<<<<<<<<<
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:
  */
-          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1060; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_cur_scope->__pyx_v_xcat = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, __pyx_t_19);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1061
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1082
  *                         xcat_index = arity+1
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index             # <<<<<<<<<<<<<<
@@ -48001,24 +48496,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_xcat_index);
           __pyx_cur_scope->__pyx_v_suffix_link_xcat_index = __pyx_cur_scope->__pyx_v_xcat_index;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1083
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:             # <<<<<<<<<<<<<<
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  */
-          __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1063
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1084
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:
  *                             suffix_link_xcat_index = xcat_index-1             # <<<<<<<<<<<<<<
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  */
-            __pyx_t_11 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_xcat_index, __pyx_int_1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_xcat_index, __pyx_int_1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1084; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index);
             __Pyx_DECREF(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index);
@@ -48029,159 +48524,159 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L39:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1064
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
  *                         if is_shadow_path:
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)             # <<<<<<<<<<<<<<
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  */
-          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1064; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_cur_scope->__pyx_v_suffix_link_xcat = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, __pyx_t_19);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  *                                 phrase= Phrase(phrase + (xcat,)))
  */
-          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1066
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1087
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],             # <<<<<<<<<<<<<<
  *                                 phrase= Phrase(phrase + (xcat,)))
  * 
  */
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_3 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-          __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_suffix_link_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_suffix_link_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1067
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1088
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  *                                 phrase= Phrase(phrase + (xcat,)))             # <<<<<<<<<<<<<<
  * 
  *                     # sample from range
  */
-          __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_9);
           __Pyx_GIVEREF(__pyx_t_9);
           __pyx_t_9 = 0;
-          __pyx_t_9 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_9);
           __Pyx_GIVEREF(__pyx_t_9);
           __pyx_t_9 = 0;
-          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  *                                 phrase= Phrase(phrase + (xcat,)))
  */
-          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          if (__Pyx_SetItemInt(__pyx_t_11, __pyx_cur_scope->__pyx_v_xcat, __pyx_t_9, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (__Pyx_SetItemInt(__pyx_t_11, __pyx_cur_scope->__pyx_v_xcat, __pyx_t_9, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
           goto __pyx_L38;
         }
         __pyx_L38:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1070
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
  * 
  *                     # sample from range
  *                     if not is_shadow_path:             # <<<<<<<<<<<<<<
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  */
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1091; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_20 = (!__pyx_t_8);
         if (__pyx_t_20) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1071
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
  *                     # sample from range
  *                     if not is_shadow_path:
  *                         sample = self.sampler.sample(node.phrase_location)             # <<<<<<<<<<<<<<
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  *                         chunklen = IntList(initial_len=num_subpatterns)
  */
-          __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self->sampler), __pyx_n_s__sample); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1071; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self->sampler), __pyx_n_s__sample); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1071; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1071; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_11);
           __Pyx_GIVEREF(__pyx_t_11);
           __pyx_t_11 = 0;
-          __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1071; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-          if (!(likely(((__pyx_t_11) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_11, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1071; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (!(likely(((__pyx_t_11) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_11, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_sample));
           __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_sample));
           __Pyx_GIVEREF(__pyx_t_11);
           __pyx_cur_scope->__pyx_v_sample = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_11);
           __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1072
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
  *                     if not is_shadow_path:
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns             # <<<<<<<<<<<<<<
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:
  */
-          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1072; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __pyx_cur_scope->__pyx_v_num_subpatterns = ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_t_11)->num_subpatterns;
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1073
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1094
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  *                         chunklen = IntList(initial_len=num_subpatterns)             # <<<<<<<<<<<<<<
  *                         for j from 0 <= j < num_subpatterns:
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)
  */
-          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-          __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-          __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
           __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_chunklen));
@@ -48190,7 +48685,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_chunklen = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_3);
           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1074
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1095
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:             # <<<<<<<<<<<<<<
@@ -48200,7 +48695,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_19 = __pyx_cur_scope->__pyx_v_num_subpatterns;
           for (__pyx_cur_scope->__pyx_v_j = 0; __pyx_cur_scope->__pyx_v_j < __pyx_t_19; __pyx_cur_scope->__pyx_v_j++) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1075
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1096
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)             # <<<<<<<<<<<<<<
@@ -48210,14 +48705,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             (__pyx_cur_scope->__pyx_v_chunklen->arr[__pyx_cur_scope->__pyx_v_j]) = ((struct __pyx_vtabstruct_3_sa_Phrase *)__pyx_cur_scope->__pyx_v_hiero_phrase->__pyx_vtab)->chunklen(__pyx_cur_scope->__pyx_v_hiero_phrase, __pyx_cur_scope->__pyx_v_j);
           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1076
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1097
  *                         for j from 0 <= j < num_subpatterns:
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)
  *                         extracts = []             # <<<<<<<<<<<<<<
  *                         j = 0
  *                         extract_start = monitor_cpu()
  */
-          __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1076; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_extracts));
           __Pyx_XDECREF(((PyObject *)__pyx_cur_scope->__pyx_v_extracts));
@@ -48225,7 +48720,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_extracts = __pyx_t_3;
           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1077
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1098
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)
  *                         extracts = []
  *                         j = 0             # <<<<<<<<<<<<<<
@@ -48234,14 +48729,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
           __pyx_cur_scope->__pyx_v_j = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1078
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1099
  *                         extracts = []
  *                         j = 0
  *                         extract_start = monitor_cpu()             # <<<<<<<<<<<<<<
  *                         while j < sample.len:
  *                             extract = []
  */
-          __pyx_t_3 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1078; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_extract_start);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_extract_start);
@@ -48249,7 +48744,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_extract_start = __pyx_t_3;
           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1079
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1100
  *                         j = 0
  *                         extract_start = monitor_cpu()
  *                         while j < sample.len:             # <<<<<<<<<<<<<<
@@ -48260,14 +48755,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_20 = (__pyx_cur_scope->__pyx_v_j < __pyx_cur_scope->__pyx_v_sample->len);
             if (!__pyx_t_20) break;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1080
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1101
  *                         extract_start = monitor_cpu()
  *                         while j < sample.len:
  *                             extract = []             # <<<<<<<<<<<<<<
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)
  */
-            __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1080; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_extract);
             __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_extract);
@@ -48275,7 +48770,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_extract = ((PyObject *)__pyx_t_3);
             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1082
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1103
  *                             extract = []
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -48284,21 +48779,21 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
             __pyx_f_3_sa_assign_matching((&__pyx_cur_scope->__pyx_v_matching), __pyx_cur_scope->__pyx_v_sample->arr, __pyx_cur_scope->__pyx_v_j, __pyx_cur_scope->__pyx_v_num_subpatterns, __pyx_cur_scope->__pyx_v_self->fda->sent_id->arr);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1083
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1104
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)
  *                             loc = tuple(sample[j:j+num_subpatterns])             # <<<<<<<<<<<<<<
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])
  */
-            __pyx_t_3 = __Pyx_PySequence_GetSlice(((PyObject *)__pyx_cur_scope->__pyx_v_sample), __pyx_cur_scope->__pyx_v_j, (__pyx_cur_scope->__pyx_v_j + __pyx_cur_scope->__pyx_v_num_subpatterns)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = __Pyx_PySequence_GetSlice(((PyObject *)__pyx_cur_scope->__pyx_v_sample), __pyx_cur_scope->__pyx_v_j, (__pyx_cur_scope->__pyx_v_j + __pyx_cur_scope->__pyx_v_num_subpatterns)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            __pyx_t_11 = PyTuple_New(1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyTuple_New(1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             PyTuple_SET_ITEM(__pyx_t_11, 0, __pyx_t_3);
             __Pyx_GIVEREF(__pyx_t_3);
             __pyx_t_3 = 0;
-            __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_11), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_11), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
             __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_loc);
@@ -48307,14 +48802,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_loc = __pyx_t_3;
             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1084
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1105
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)
  *                             loc = tuple(sample[j:j+num_subpatterns])
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)             # <<<<<<<<<<<<<<
  *                             extracts.extend([(e, loc) for e in extract])
  *                             j = j + num_subpatterns
  */
-            __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->extract(__pyx_cur_scope->__pyx_v_self, __pyx_cur_scope->__pyx_v_hiero_phrase, (&__pyx_cur_scope->__pyx_v_matching), __pyx_cur_scope->__pyx_v_chunklen->arr, __pyx_cur_scope->__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1084; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->extract(__pyx_cur_scope->__pyx_v_self, __pyx_cur_scope->__pyx_v_hiero_phrase, (&__pyx_cur_scope->__pyx_v_matching), __pyx_cur_scope->__pyx_v_chunklen->arr, __pyx_cur_scope->__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1105; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_extract);
             __Pyx_DECREF(__pyx_cur_scope->__pyx_v_extract);
@@ -48322,22 +48817,22 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_extract = __pyx_t_3;
             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1106
  *                             loc = tuple(sample[j:j+num_subpatterns])
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])             # <<<<<<<<<<<<<<
  *                             j = j + num_subpatterns
  * 
  */
-            __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_extracts), __pyx_n_s__extend); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_extracts), __pyx_n_s__extend); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            __pyx_t_11 = PyList_New(0); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyList_New(0); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             if (PyList_CheckExact(__pyx_cur_scope->__pyx_v_extract) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_v_extract)) {
               __pyx_t_9 = __pyx_cur_scope->__pyx_v_extract; __Pyx_INCREF(__pyx_t_9); __pyx_t_5 = 0;
               __pyx_t_21 = NULL;
             } else {
-              __pyx_t_5 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_extract); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_5 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_extract); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __pyx_t_21 = Py_TYPE(__pyx_t_9)->tp_iternext;
             }
@@ -48345,23 +48840,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               if (!__pyx_t_21 && PyList_CheckExact(__pyx_t_9)) {
                 if (__pyx_t_5 >= PyList_GET_SIZE(__pyx_t_9)) break;
                 #if CYTHON_COMPILING_IN_CPYTHON
-                __pyx_t_15 = PyList_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyList_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 #else
-                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 #endif
               } else if (!__pyx_t_21 && PyTuple_CheckExact(__pyx_t_9)) {
                 if (__pyx_t_5 >= PyTuple_GET_SIZE(__pyx_t_9)) break;
                 #if CYTHON_COMPILING_IN_CPYTHON
-                __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 #else
-                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 #endif
               } else {
                 __pyx_t_15 = __pyx_t_21(__pyx_t_9);
                 if (unlikely(!__pyx_t_15)) {
                   if (PyErr_Occurred()) {
                     if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                    else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   break;
                 }
@@ -48372,7 +48867,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_GIVEREF(__pyx_t_15);
               __pyx_cur_scope->__pyx_v_e = __pyx_t_15;
               __pyx_t_15 = 0;
-              __pyx_t_15 = PyTuple_New(2); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(2); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e);
               PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_cur_scope->__pyx_v_e);
@@ -48380,23 +48875,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_INCREF(__pyx_cur_scope->__pyx_v_loc);
               PyTuple_SET_ITEM(__pyx_t_15, 1, __pyx_cur_scope->__pyx_v_loc);
               __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_loc);
-              if (unlikely(__Pyx_PyList_Append(__pyx_t_11, (PyObject*)__pyx_t_15))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (unlikely(__Pyx_PyList_Append(__pyx_t_11, (PyObject*)__pyx_t_15))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
             }
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-            __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_INCREF(((PyObject *)__pyx_t_11));
             PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_11));
             __Pyx_GIVEREF(((PyObject *)__pyx_t_11));
             __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
-            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
             __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])
  *                             j = j + num_subpatterns             # <<<<<<<<<<<<<<
@@ -48406,7 +48901,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_j = (__pyx_cur_scope->__pyx_v_j + __pyx_cur_scope->__pyx_v_num_subpatterns);
           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1088
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
  *                             j = j + num_subpatterns
  * 
  *                         num_samples = sample.len/num_subpatterns             # <<<<<<<<<<<<<<
@@ -48415,22 +48910,22 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
           if (unlikely(__pyx_cur_scope->__pyx_v_num_subpatterns == 0)) {
             PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           else if (sizeof(int) == sizeof(long) && unlikely(__pyx_cur_scope->__pyx_v_num_subpatterns == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_cur_scope->__pyx_v_sample->len))) {
             PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           __pyx_cur_scope->__pyx_v_num_samples = __Pyx_div_int(__pyx_cur_scope->__pyx_v_sample->len, __pyx_cur_scope->__pyx_v_num_subpatterns);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1089
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
  * 
  *                         num_samples = sample.len/num_subpatterns
  *                         extract_stop = monitor_cpu()             # <<<<<<<<<<<<<<
  *                         self.extract_time = self.extract_time + extract_stop - extract_start
  *                         if len(extracts) > 0:
  */
-          __pyx_t_11 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1089; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_extract_stop);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_extract_stop);
@@ -48438,46 +48933,46 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_extract_stop = __pyx_t_11;
           __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1090
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
  *                         num_samples = sample.len/num_subpatterns
  *                         extract_stop = monitor_cpu()
  *                         self.extract_time = self.extract_time + extract_stop - extract_start             # <<<<<<<<<<<<<<
  *                         if len(extracts) > 0:
  *                             fcount = Counter()
  */
-          __pyx_t_11 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_self->extract_time); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_self->extract_time); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          __pyx_t_9 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_extract_stop); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_extract_stop); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-          __pyx_t_11 = PyNumber_Subtract(__pyx_t_9, __pyx_cur_scope->__pyx_v_extract_start); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyNumber_Subtract(__pyx_t_9, __pyx_cur_scope->__pyx_v_extract_start); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-          __pyx_t_22 = __pyx_PyFloat_AsFloat(__pyx_t_11); if (unlikely((__pyx_t_22 == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_22 = __pyx_PyFloat_AsFloat(__pyx_t_11); if (unlikely((__pyx_t_22 == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
           __pyx_cur_scope->__pyx_v_self->extract_time = __pyx_t_22;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1112
  *                         extract_stop = monitor_cpu()
  *                         self.extract_time = self.extract_time + extract_stop - extract_start
  *                         if len(extracts) > 0:             # <<<<<<<<<<<<<<
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
  */
-          __pyx_t_5 = PyList_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_extracts)); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1091; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_5 = PyList_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_extracts)); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_t_20 = (__pyx_t_5 > 0);
           if (__pyx_t_20) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1113
  *                         self.extract_time = self.extract_time + extract_stop - extract_start
  *                         if len(extracts) > 0:
  *                             fcount = Counter()             # <<<<<<<<<<<<<<
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
  *                             for (f, e, count, als), loc in extracts:
  */
-            __pyx_t_11 = __Pyx_GetName(__pyx_m, __pyx_n_s__Counter); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = __Pyx_GetName(__pyx_m, __pyx_n_s__Counter); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_9 = PyObject_Call(__pyx_t_11, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_Call(__pyx_t_11, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
             __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_fcount);
@@ -48486,23 +48981,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_fcount = __pyx_t_9;
             __pyx_t_9 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
  *                         if len(extracts) > 0:
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))             # <<<<<<<<<<<<<<
  *                             for (f, e, count, als), loc in extracts:
  *                                 fcount[f] += count
  */
-            __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
-            __pyx_t_11 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda1, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda3, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_11);
             __Pyx_GIVEREF(__pyx_t_11);
             __pyx_t_11 = 0;
-            __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
             __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
@@ -48512,7 +49007,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_fphrases = __pyx_t_11;
             __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1094
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1115
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
  *                             for (f, e, count, als), loc in extracts:             # <<<<<<<<<<<<<<
@@ -48523,9 +49018,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             for (;;) {
               if (__pyx_t_5 >= PyList_GET_SIZE(__pyx_t_11)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_3 = PyList_GET_ITEM(__pyx_t_11, __pyx_t_5); __Pyx_INCREF(__pyx_t_3); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyList_GET_ITEM(__pyx_t_11, __pyx_t_5); __Pyx_INCREF(__pyx_t_3); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_3 = PySequence_ITEM(__pyx_t_11, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PySequence_ITEM(__pyx_t_11, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
               if ((likely(PyTuple_CheckExact(__pyx_t_3))) || (PyList_CheckExact(__pyx_t_3))) {
                 PyObject* sequence = __pyx_t_3;
@@ -48537,7 +49032,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 if (unlikely(size != 2)) {
                   if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                   else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 #if CYTHON_COMPILING_IN_CPYTHON
                 if (likely(PyTuple_CheckExact(sequence))) {
@@ -48550,14 +49045,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __Pyx_INCREF(__pyx_t_9);
                 __Pyx_INCREF(__pyx_t_15);
                 #else
-                __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 #endif
                 __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
               } else
               {
                 Py_ssize_t index = -1;
-                __pyx_t_16 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
                 __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
                 __pyx_t_18 = Py_TYPE(__pyx_t_16)->tp_iternext;
@@ -48565,7 +49060,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __Pyx_GOTREF(__pyx_t_9);
                 index = 1; __pyx_t_15 = __pyx_t_18(__pyx_t_16); if (unlikely(!__pyx_t_15)) goto __pyx_L50_unpacking_failed;
                 __Pyx_GOTREF(__pyx_t_15);
-                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_16), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_16), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __pyx_t_18 = NULL;
                 __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
                 goto __pyx_L51_unpacking_done;
@@ -48573,7 +49068,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
                 __pyx_t_18 = NULL;
                 if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __pyx_L51_unpacking_done:;
               }
               if ((likely(PyTuple_CheckExact(__pyx_t_9))) || (PyList_CheckExact(__pyx_t_9))) {
@@ -48586,7 +49081,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 if (unlikely(size != 4)) {
                   if (size > 4) __Pyx_RaiseTooManyValuesError(4);
                   else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 #if CYTHON_COMPILING_IN_CPYTHON
                 if (likely(PyTuple_CheckExact(sequence))) {
@@ -48608,7 +49103,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 Py_ssize_t i;
                 PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_2,&__pyx_t_10,&__pyx_t_7};
                 for (i=0; i < 4; i++) {
-                  PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   *(temps[i]) = item;
                 }
                 #endif
@@ -48617,7 +49112,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               {
                 Py_ssize_t index = -1;
                 PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_2,&__pyx_t_10,&__pyx_t_7};
-                __pyx_t_14 = PyObject_GetIter(__pyx_t_9); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyObject_GetIter(__pyx_t_9); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
                 __pyx_t_18 = Py_TYPE(__pyx_t_14)->tp_iternext;
@@ -48626,7 +49121,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                   __Pyx_GOTREF(item);
                   *(temps[index]) = item;
                 }
-                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_14), 4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_14), 4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __pyx_t_18 = NULL;
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 goto __pyx_L53_unpacking_done;
@@ -48634,7 +49129,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 __pyx_t_18 = NULL;
                 if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __pyx_L53_unpacking_done:;
               }
               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_f);
@@ -48663,7 +49158,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __pyx_cur_scope->__pyx_v_loc = __pyx_t_15;
               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1095
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
  *                             for (f, e, count, als), loc in extracts:
  *                                 fcount[f] += count             # <<<<<<<<<<<<<<
@@ -48672,38 +49167,38 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
               __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f);
               __pyx_t_3 = __pyx_cur_scope->__pyx_v_f;
-              __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_9 = PyNumber_InPlaceAdd(__pyx_t_15, __pyx_cur_scope->__pyx_v_count); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = PyNumber_InPlaceAdd(__pyx_t_15, __pyx_cur_scope->__pyx_v_count); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-              if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1096
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1117
  *                             for (f, e, count, als), loc in extracts:
  *                                 fcount[f] += count
  *                                 fphrases[f][e][als].append(loc)             # <<<<<<<<<<<<<<
  *                             for f, elist in fphrases.iteritems():
  *                                 for e, alslist in elist.iteritems():
  */
-              __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fphrases, __pyx_cur_scope->__pyx_v_f); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fphrases, __pyx_cur_scope->__pyx_v_f); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_3);
-              __pyx_t_9 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_e); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_e); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-              __pyx_t_3 = PyObject_GetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_als); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyObject_GetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_als); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_3);
               __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-              __pyx_t_9 = __Pyx_PyObject_Append(__pyx_t_3, __pyx_cur_scope->__pyx_v_loc); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = __Pyx_PyObject_Append(__pyx_t_3, __pyx_cur_scope->__pyx_v_loc); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
               __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
             }
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1097
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1118
  *                                 fcount[f] += count
  *                                 fphrases[f][e][als].append(loc)
  *                             for f, elist in fphrases.iteritems():             # <<<<<<<<<<<<<<
@@ -48713,9 +49208,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_5 = 0;
             if (unlikely(__pyx_cur_scope->__pyx_v_fphrases == Py_None)) {
               PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             }
-            __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_fphrases, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_23), (&__pyx_t_19)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_fphrases, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_23), (&__pyx_t_19)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_XDECREF(__pyx_t_11);
             __pyx_t_11 = __pyx_t_9;
@@ -48723,7 +49218,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             while (1) {
               __pyx_t_6 = __Pyx_dict_iter_next(__pyx_t_11, __pyx_t_23, &__pyx_t_5, &__pyx_t_9, &__pyx_t_3, NULL, __pyx_t_19);
               if (unlikely(__pyx_t_6 == 0)) break;
-              if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_GOTREF(__pyx_t_3);
               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_f);
@@ -48737,7 +49232,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __pyx_cur_scope->__pyx_v_elist = __pyx_t_3;
               __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1098
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
  *                                 fphrases[f][e][als].append(loc)
  *                             for f, elist in fphrases.iteritems():
  *                                 for e, alslist in elist.iteritems():             # <<<<<<<<<<<<<<
@@ -48747,9 +49242,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __pyx_t_24 = 0;
               if (unlikely(__pyx_cur_scope->__pyx_v_elist == Py_None)) {
                 PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
-              __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_elist, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_25), (&__pyx_t_6)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_elist, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_25), (&__pyx_t_6)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __Pyx_XDECREF(__pyx_t_3);
               __pyx_t_3 = __pyx_t_9;
@@ -48757,7 +49252,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               while (1) {
                 __pyx_t_4 = __Pyx_dict_iter_next(__pyx_t_3, __pyx_t_25, &__pyx_t_24, &__pyx_t_9, &__pyx_t_15, NULL, __pyx_t_6);
                 if (unlikely(__pyx_t_4 == 0)) break;
-                if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_e);
@@ -48771,30 +49266,30 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_cur_scope->__pyx_v_alslist = __pyx_t_15;
                 __pyx_t_15 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1099
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
  *                             for f, elist in fphrases.iteritems():
  *                                 for e, alslist in elist.iteritems():
  *                                     alignment, max_locs = max(alslist.iteritems(), key=lambda x: len(x[1]))             # <<<<<<<<<<<<<<
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))
  *                                     count = len(locs)
  */
-                __pyx_t_15 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_alslist, __pyx_n_s__iteritems); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_alslist, __pyx_n_s__iteritems); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
-                __pyx_t_9 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_9);
                 __Pyx_GIVEREF(__pyx_t_9);
                 __pyx_t_9 = 0;
-                __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(((PyObject *)__pyx_t_9));
-                __pyx_t_7 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_1lambda3, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_7 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_1lambda5, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
-                if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__key), __pyx_t_7) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__key), __pyx_t_7) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-                __pyx_t_7 = PyObject_Call(__pyx_builtin_max, ((PyObject *)__pyx_t_15), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_7 = PyObject_Call(__pyx_builtin_max, ((PyObject *)__pyx_t_15), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
                 __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
@@ -48808,7 +49303,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -48821,14 +49316,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                   __Pyx_INCREF(__pyx_t_9);
                   __Pyx_INCREF(__pyx_t_15);
                   #else
-                  __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
                   __pyx_t_18 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -48836,7 +49331,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                   __Pyx_GOTREF(__pyx_t_9);
                   index = 1; __pyx_t_15 = __pyx_t_18(__pyx_t_10); if (unlikely(!__pyx_t_15)) goto __pyx_L58_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_15);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_18 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L59_unpacking_done;
@@ -48844,7 +49339,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_18 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L59_unpacking_done:;
                 }
                 __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_alignment);
@@ -48858,41 +49353,41 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_cur_scope->__pyx_v_max_locs = __pyx_t_15;
                 __pyx_t_15 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1100
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
  *                                 for e, alslist in elist.iteritems():
  *                                     alignment, max_locs = max(alslist.iteritems(), key=lambda x: len(x[1]))
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))             # <<<<<<<<<<<<<<
  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(
  */
-                __pyx_t_7 = __Pyx_GetName(__pyx_m, __pyx_n_s__itertools); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_7 = __Pyx_GetName(__pyx_m, __pyx_n_s__itertools); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
-                __pyx_t_15 = PyObject_GetAttr(__pyx_t_7, __pyx_n_s__chain); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_GetAttr(__pyx_t_7, __pyx_n_s__chain); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-                __pyx_t_7 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__from_iterable); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_7 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__from_iterable); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-                __pyx_t_15 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_alslist, __pyx_n_s__itervalues); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_alslist, __pyx_n_s__itervalues); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
-                __pyx_t_9 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_9);
                 __Pyx_GIVEREF(__pyx_t_9);
                 __pyx_t_9 = 0;
-                __pyx_t_9 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_9);
                 __Pyx_GIVEREF(__pyx_t_9);
                 __pyx_t_9 = 0;
-                __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1100; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
                 __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_locs));
@@ -48901,15 +49396,15 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_cur_scope->__pyx_v_locs = ((PyObject*)__pyx_t_9);
                 __pyx_t_9 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1101
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
  *                                     alignment, max_locs = max(alslist.iteritems(), key=lambda x: len(x[1]))
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))
  *                                     count = len(locs)             # <<<<<<<<<<<<<<
  *                                     scores = self.scorer.score(FeatureContext(
  *                                                f, e, count, fcount[f], num_samples,
  */
-                __pyx_t_26 = PyTuple_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_locs)); if (unlikely(__pyx_t_26 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                __pyx_t_9 = PyInt_FromSsize_t(__pyx_t_26); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_26 = PyTuple_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_locs)); if (unlikely(__pyx_t_26 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = PyInt_FromSsize_t(__pyx_t_26); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
                 __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_count);
                 __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_count);
@@ -48917,43 +49412,43 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_cur_scope->__pyx_v_count = __pyx_t_9;
                 __pyx_t_9 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1102
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1123
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))
  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(             # <<<<<<<<<<<<<<
  *                                                f, e, count, fcount[f], num_samples,
  *                                                (k,i+spanlen), locs, input_match,
  */
-                __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__FeatureContext); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__FeatureContext); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1103
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(
  *                                                f, e, count, fcount[f], num_samples,             # <<<<<<<<<<<<<<
  *                                                (k,i+spanlen), locs, input_match,
  *                                                fwords, self.fda, self.eda,
  */
-                __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_cur_scope->__pyx_v_f); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_cur_scope->__pyx_v_f); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
-                __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_num_samples); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_num_samples); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1104
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1125
  *                                     scores = self.scorer.score(FeatureContext(
  *                                                f, e, count, fcount[f], num_samples,
  *                                                (k,i+spanlen), locs, input_match,             # <<<<<<<<<<<<<<
  *                                                fwords, self.fda, self.eda,
  *                                                meta))
  */
-                __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_10);
-                __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_16 = PyNumber_Add(__pyx_t_2, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = PyNumber_Add(__pyx_t_2, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
                 __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-                __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_10);
                 __Pyx_GIVEREF(__pyx_t_10);
@@ -48962,14 +49457,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_t_10 = 0;
                 __pyx_t_16 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1106
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1127
  *                                                (k,i+spanlen), locs, input_match,
  *                                                fwords, self.fda, self.eda,
  *                                                meta))             # <<<<<<<<<<<<<<
  *                                     yield Rule(self.category, f, e, scores, alignment)
  * 
  */
-                __pyx_t_16 = PyTuple_New(12); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = PyTuple_New(12); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
                 __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f);
                 PyTuple_SET_ITEM(__pyx_t_16, 0, __pyx_cur_scope->__pyx_v_f);
@@ -49007,11 +49502,11 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_t_15 = 0;
                 __pyx_t_7 = 0;
                 __pyx_t_2 = 0;
-                __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
                 __Pyx_DECREF(((PyObject *)__pyx_t_16)); __pyx_t_16 = 0;
-                __pyx_t_16 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_Scorer *)__pyx_cur_scope->__pyx_v_self->scorer->__pyx_vtab)->score(__pyx_cur_scope->__pyx_v_self->scorer, __pyx_t_2)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_Scorer *)__pyx_cur_scope->__pyx_v_self->scorer->__pyx_vtab)->score(__pyx_cur_scope->__pyx_v_self->scorer, __pyx_t_2)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
                 __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
                 __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_scores));
@@ -49020,16 +49515,16 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_cur_scope->__pyx_v_scores = ((struct __pyx_obj_3_sa_FeatureVector *)__pyx_t_16);
                 __pyx_t_16 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1128
  *                                                fwords, self.fda, self.eda,
  *                                                meta))
  *                                     yield Rule(self.category, f, e, scores, alignment)             # <<<<<<<<<<<<<<
  * 
  *                 if len(phrase) < self.max_length and i+spanlen < len(fwords) and pathlen+1 <= self.max_initial_size:
  */
-                __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->category); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->category); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
-                __pyx_t_2 = PyTuple_New(5); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyTuple_New(5); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_16);
                 __Pyx_GIVEREF(__pyx_t_16);
@@ -49046,7 +49541,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 PyTuple_SET_ITEM(__pyx_t_2, 4, __pyx_cur_scope->__pyx_v_alignment);
                 __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_alignment);
                 __pyx_t_16 = 0;
-                __pyx_t_16 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Rule)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_16 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Rule)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_16);
                 __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
                 __pyx_r = __pyx_t_16;
@@ -49086,7 +49581,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
                 __pyx_t_23 = __pyx_cur_scope->__pyx_t_7;
                 __pyx_t_24 = __pyx_cur_scope->__pyx_t_8;
                 __pyx_t_25 = __pyx_cur_scope->__pyx_t_9;
-                if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
             }
@@ -49101,38 +49596,38 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       __pyx_L32:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1130
  *                                     yield Rule(self.category, f, e, scores, alignment)
  * 
  *                 if len(phrase) < self.max_length and i+spanlen < len(fwords) and pathlen+1 <= self.max_initial_size:             # <<<<<<<<<<<<<<
  *                     for alt_id in range(len(fwords[i+spanlen])):
  *                         new_frontier.append((k, i+spanlen, input_match, alt_id, pathlen + 1, node, phrase, is_shadow_path))
  */
-      __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_t_20 = (__pyx_t_23 < __pyx_cur_scope->__pyx_v_self->max_length);
       if (__pyx_t_20) {
-        __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
-        __pyx_t_3 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-        __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        __pyx_t_11 = PyInt_FromSsize_t(__pyx_t_23); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_fwords); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyInt_FromSsize_t(__pyx_t_23); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
-        __pyx_t_16 = PyObject_RichCompare(__pyx_t_3, __pyx_t_11, Py_LT); __Pyx_XGOTREF(__pyx_t_16); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyObject_RichCompare(__pyx_t_3, __pyx_t_11, Py_LT); __Pyx_XGOTREF(__pyx_t_16); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_16); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_16); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
         if (__pyx_t_8) {
-          __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          __pyx_t_3 = PyObject_RichCompare(__pyx_t_16, __pyx_t_11, Py_LE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_RichCompare(__pyx_t_16, __pyx_t_11, Py_LE); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-          __pyx_t_27 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_27 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_27 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_27 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
           __pyx_t_28 = __pyx_t_27;
         } else {
@@ -49144,45 +49639,45 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       if (__pyx_t_8) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1131
  * 
  *                 if len(phrase) < self.max_length and i+spanlen < len(fwords) and pathlen+1 <= self.max_initial_size:
  *                     for alt_id in range(len(fwords[i+spanlen])):             # <<<<<<<<<<<<<<
  *                         new_frontier.append((k, i+spanlen, input_match, alt_id, pathlen + 1, node, phrase, is_shadow_path))
  *                     num_subpatterns = arity
  */
-        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_11 = PyNumber_Add(__pyx_t_3, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyNumber_Add(__pyx_t_3, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-        __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fwords, __pyx_t_11); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fwords, __pyx_t_11); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-        __pyx_t_23 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_23 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         for (__pyx_t_19 = 0; __pyx_t_19 < __pyx_t_23; __pyx_t_19+=1) {
           __pyx_cur_scope->__pyx_v_alt_id = __pyx_t_19;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1132
  *                 if len(phrase) < self.max_length and i+spanlen < len(fwords) and pathlen+1 <= self.max_initial_size:
  *                     for alt_id in range(len(fwords[i+spanlen])):
  *                         new_frontier.append((k, i+spanlen, input_match, alt_id, pathlen + 1, node, phrase, is_shadow_path))             # <<<<<<<<<<<<<<
  *                     num_subpatterns = arity
  *                     if not is_shadow_path:
  */
-          __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
-          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          __pyx_t_16 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyNumber_Add(__pyx_t_11, __pyx_cur_scope->__pyx_v_spanlen); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
           __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
-          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt_id); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt_id); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
-          __pyx_t_2 = PyNumber_Add(__pyx_cur_scope->__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyNumber_Add(__pyx_cur_scope->__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_9 = PyTuple_New(8); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyTuple_New(8); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_t_3);
           __Pyx_GIVEREF(__pyx_t_3);
@@ -49208,11 +49703,11 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_16 = 0;
           __pyx_t_11 = 0;
           __pyx_t_2 = 0;
-          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_new_frontier, ((PyObject *)__pyx_t_9)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_new_frontier, ((PyObject *)__pyx_t_9)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
         }
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1112
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1133
  *                     for alt_id in range(len(fwords[i+spanlen])):
  *                         new_frontier.append((k, i+spanlen, input_match, alt_id, pathlen + 1, node, phrase, is_shadow_path))
  *                     num_subpatterns = arity             # <<<<<<<<<<<<<<
@@ -49221,18 +49716,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
         __pyx_cur_scope->__pyx_v_num_subpatterns = __pyx_cur_scope->__pyx_v_arity;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1113
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1134
  *                         new_frontier.append((k, i+spanlen, input_match, alt_id, pathlen + 1, node, phrase, is_shadow_path))
  *                     num_subpatterns = arity
  *                     if not is_shadow_path:             # <<<<<<<<<<<<<<
  *                         num_subpatterns = num_subpatterns + 1
  *                     if len(phrase)+1 < self.max_length and arity < self.max_nonterminals and num_subpatterns < self.max_chunks:
  */
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_20 = (!__pyx_t_8);
         if (__pyx_t_20) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1135
  *                     num_subpatterns = arity
  *                     if not is_shadow_path:
  *                         num_subpatterns = num_subpatterns + 1             # <<<<<<<<<<<<<<
@@ -49244,14 +49739,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         __pyx_L64:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1115
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1136
  *                     if not is_shadow_path:
  *                         num_subpatterns = num_subpatterns + 1
  *                     if len(phrase)+1 < self.max_length and arity < self.max_nonterminals and num_subpatterns < self.max_chunks:             # <<<<<<<<<<<<<<
  *                         xcat = sym_setindex(self.category, arity+1)
  *                         xnode = node.children[xcat]
  */
-        __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_23 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_23 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_20 = ((__pyx_t_23 + 1) < __pyx_cur_scope->__pyx_v_self->max_length);
         if (__pyx_t_20) {
           __pyx_t_8 = (__pyx_cur_scope->__pyx_v_arity < __pyx_cur_scope->__pyx_v_self->max_nonterminals);
@@ -49267,7 +49762,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1137
  *                         num_subpatterns = num_subpatterns + 1
  *                     if len(phrase)+1 < self.max_length and arity < self.max_nonterminals and num_subpatterns < self.max_chunks:
  *                         xcat = sym_setindex(self.category, arity+1)             # <<<<<<<<<<<<<<
@@ -49276,16 +49771,16 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
           __pyx_cur_scope->__pyx_v_xcat = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, (__pyx_cur_scope->__pyx_v_arity + 1));
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1117
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1138
  *                     if len(phrase)+1 < self.max_length and arity < self.max_nonterminals and num_subpatterns < self.max_chunks:
  *                         xcat = sym_setindex(self.category, arity+1)
  *                         xnode = node.children[xcat]             # <<<<<<<<<<<<<<
  *                         # I put spanlen=1 below
  *                         key = tuple([self.min_gap_size, i, 1, pathlen])
  */
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, __pyx_cur_scope->__pyx_v_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, __pyx_cur_scope->__pyx_v_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_xnode);
@@ -49294,18 +49789,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_xnode = __pyx_t_2;
           __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1140
  *                         xnode = node.children[xcat]
  *                         # I put spanlen=1 below
  *                         key = tuple([self.min_gap_size, i, 1, pathlen])             # <<<<<<<<<<<<<<
  *                         frontier_nodes = []
  *                         if (key in nodes_isteps_away_buffer):
  */
-          __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_11 = PyList_New(4); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyList_New(4); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           PyList_SET_ITEM(__pyx_t_11, 0, __pyx_t_2);
           __Pyx_GIVEREF(__pyx_t_2);
@@ -49319,7 +49814,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_pathlen);
           __pyx_t_2 = 0;
           __pyx_t_9 = 0;
-          __pyx_t_9 = ((PyObject *)PyList_AsTuple(__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = ((PyObject *)PyList_AsTuple(__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_9));
           __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
           __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_key));
@@ -49328,14 +49823,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_key = __pyx_t_9;
           __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1141
  *                         # I put spanlen=1 below
  *                         key = tuple([self.min_gap_size, i, 1, pathlen])
  *                         frontier_nodes = []             # <<<<<<<<<<<<<<
  *                         if (key in nodes_isteps_away_buffer):
  *                             frontier_nodes = nodes_isteps_away_buffer[key]
  */
-          __pyx_t_9 = PyList_New(0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyList_New(0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_frontier_nodes);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_frontier_nodes);
@@ -49343,24 +49838,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_frontier_nodes = ((PyObject *)__pyx_t_9);
           __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1142
  *                         key = tuple([self.min_gap_size, i, 1, pathlen])
  *                         frontier_nodes = []
  *                         if (key in nodes_isteps_away_buffer):             # <<<<<<<<<<<<<<
  *                             frontier_nodes = nodes_isteps_away_buffer[key]
  *                         else:
  */
-          __pyx_t_8 = (__Pyx_PyDict_Contains(((PyObject *)__pyx_cur_scope->__pyx_v_key), ((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = (__Pyx_PyDict_Contains(((PyObject *)__pyx_cur_scope->__pyx_v_key), ((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1143
  *                         frontier_nodes = []
  *                         if (key in nodes_isteps_away_buffer):
  *                             frontier_nodes = nodes_isteps_away_buffer[key]             # <<<<<<<<<<<<<<
  *                         else:
  *                             frontier_nodes = self.get_all_nodes_isteps_away(self.min_gap_size, i, 1, pathlen, fwords, next_states, reachable_buffer)
  */
-            __pyx_t_9 = __Pyx_PyDict_GetItem(((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), ((PyObject *)__pyx_cur_scope->__pyx_v_key)); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = __Pyx_PyDict_GetItem(((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), ((PyObject *)__pyx_cur_scope->__pyx_v_key)); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_frontier_nodes);
             __Pyx_DECREF(__pyx_cur_scope->__pyx_v_frontier_nodes);
@@ -49371,20 +49866,20 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1145
  *                             frontier_nodes = nodes_isteps_away_buffer[key]
  *                         else:
  *                             frontier_nodes = self.get_all_nodes_isteps_away(self.min_gap_size, i, 1, pathlen, fwords, next_states, reachable_buffer)             # <<<<<<<<<<<<<<
  *                             nodes_isteps_away_buffer[key] = frontier_nodes
  * 
  */
-            __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s_123); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s_123); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
-            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->min_gap_size); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_16 = PyTuple_New(7); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_16 = PyTuple_New(7); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_16);
             PyTuple_SET_ITEM(__pyx_t_16, 0, __pyx_t_11);
             __Pyx_GIVEREF(__pyx_t_11);
@@ -49407,7 +49902,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __Pyx_GIVEREF(((PyObject *)__pyx_cur_scope->__pyx_v_reachable_buffer));
             __pyx_t_11 = 0;
             __pyx_t_2 = 0;
-            __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1145; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
             __Pyx_DECREF(((PyObject *)__pyx_t_16)); __pyx_t_16 = 0;
@@ -49417,18 +49912,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_frontier_nodes = __pyx_t_2;
             __pyx_t_2 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1125
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1146
  *                         else:
  *                             frontier_nodes = self.get_all_nodes_isteps_away(self.min_gap_size, i, 1, pathlen, fwords, next_states, reachable_buffer)
  *                             nodes_isteps_away_buffer[key] = frontier_nodes             # <<<<<<<<<<<<<<
  * 
  *                         for (i, alt, pathlen) in frontier_nodes:
  */
-            if (PyDict_SetItem(((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), ((PyObject *)__pyx_cur_scope->__pyx_v_key), __pyx_cur_scope->__pyx_v_frontier_nodes) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            if (PyDict_SetItem(((PyObject *)__pyx_cur_scope->__pyx_v_nodes_isteps_away_buffer), ((PyObject *)__pyx_cur_scope->__pyx_v_key), __pyx_cur_scope->__pyx_v_frontier_nodes) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1146; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           __pyx_L66:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1127
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1148
  *                             nodes_isteps_away_buffer[key] = frontier_nodes
  * 
  *                         for (i, alt, pathlen) in frontier_nodes:             # <<<<<<<<<<<<<<
@@ -49439,7 +49934,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_2 = __pyx_cur_scope->__pyx_v_frontier_nodes; __Pyx_INCREF(__pyx_t_2); __pyx_t_23 = 0;
             __pyx_t_21 = NULL;
           } else {
-            __pyx_t_23 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_frontier_nodes); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_23 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_frontier_nodes); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __pyx_t_21 = Py_TYPE(__pyx_t_2)->tp_iternext;
           }
@@ -49447,23 +49942,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             if (!__pyx_t_21 && PyList_CheckExact(__pyx_t_2)) {
               if (__pyx_t_23 >= PyList_GET_SIZE(__pyx_t_2)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_16 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_23); __Pyx_INCREF(__pyx_t_16); __pyx_t_23++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_16 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_23); __Pyx_INCREF(__pyx_t_16); __pyx_t_23++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_16 = PySequence_ITEM(__pyx_t_2, __pyx_t_23); __pyx_t_23++; if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_16 = PySequence_ITEM(__pyx_t_2, __pyx_t_23); __pyx_t_23++; if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
             } else if (!__pyx_t_21 && PyTuple_CheckExact(__pyx_t_2)) {
               if (__pyx_t_23 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_16 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_23); __Pyx_INCREF(__pyx_t_16); __pyx_t_23++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_16 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_23); __Pyx_INCREF(__pyx_t_16); __pyx_t_23++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_16 = PySequence_ITEM(__pyx_t_2, __pyx_t_23); __pyx_t_23++; if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_16 = PySequence_ITEM(__pyx_t_2, __pyx_t_23); __pyx_t_23++; if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
             } else {
               __pyx_t_16 = __pyx_t_21(__pyx_t_2);
               if (unlikely(!__pyx_t_16)) {
                 if (PyErr_Occurred()) {
                   if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 break;
               }
@@ -49479,7 +49974,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               if (unlikely(size != 3)) {
                 if (size > 3) __Pyx_RaiseTooManyValuesError(3);
                 else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               #if CYTHON_COMPILING_IN_CPYTHON
               if (likely(PyTuple_CheckExact(sequence))) {
@@ -49495,15 +49990,15 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_INCREF(__pyx_t_11);
               __Pyx_INCREF(__pyx_t_3);
               #else
-              __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-              __pyx_t_11 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-              __pyx_t_3 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_11 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
               __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
             } else
             {
               Py_ssize_t index = -1;
-              __pyx_t_7 = PyObject_GetIter(__pyx_t_16); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_7 = PyObject_GetIter(__pyx_t_16); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_7);
               __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
               __pyx_t_18 = Py_TYPE(__pyx_t_7)->tp_iternext;
@@ -49513,7 +50008,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_GOTREF(__pyx_t_11);
               index = 2; __pyx_t_3 = __pyx_t_18(__pyx_t_7); if (unlikely(!__pyx_t_3)) goto __pyx_L69_unpacking_failed;
               __Pyx_GOTREF(__pyx_t_3);
-              if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_7), 3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_7), 3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_18 = NULL;
               __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
               goto __pyx_L70_unpacking_done;
@@ -49521,12 +50016,12 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
               __pyx_t_18 = NULL;
               if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_L70_unpacking_done:;
             }
-            __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_9); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_9); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-            __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_t_11); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_t_11); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
             __pyx_cur_scope->__pyx_v_i = __pyx_t_19;
             __pyx_cur_scope->__pyx_v_alt = __pyx_t_6;
@@ -49536,40 +50031,40 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_pathlen = __pyx_t_3;
             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1128
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1149
  * 
  *                         for (i, alt, pathlen) in frontier_nodes:
  *                             new_frontier.append((k, i, input_match + (i,), alt, pathlen, xnode, phrase +(xcat,), is_shadow_path))             # <<<<<<<<<<<<<<
  *             frontier = new_frontier
  * 
  */
-            __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_16 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_16);
-            __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
-            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_i); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
-            __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_t_11);
             __Pyx_GIVEREF(__pyx_t_11);
             __pyx_t_11 = 0;
-            __pyx_t_11 = PyNumber_Add(__pyx_cur_scope->__pyx_v_input_match, ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyNumber_Add(__pyx_cur_scope->__pyx_v_input_match, ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
-            __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_alt); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
-            __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_7 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_7);
-            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_7);
             __Pyx_GIVEREF(__pyx_t_7);
             __pyx_t_7 = 0;
-            __pyx_t_7 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_7 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_7);
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-            __pyx_t_15 = PyTuple_New(8); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(8); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_16);
             __Pyx_GIVEREF(__pyx_t_16);
@@ -49595,7 +50090,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_11 = 0;
             __pyx_t_9 = 0;
             __pyx_t_7 = 0;
-            __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_new_frontier, ((PyObject *)__pyx_t_15)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_new_frontier, ((PyObject *)__pyx_t_15)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1149; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
           }
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -49609,7 +50104,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     }
     __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1129
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1150
  *                         for (i, alt, pathlen) in frontier_nodes:
  *                             new_frontier.append((k, i, input_match + (i,), alt, pathlen, xnode, phrase +(xcat,), is_shadow_path))
  *             frontier = new_frontier             # <<<<<<<<<<<<<<
@@ -49623,37 +50118,37 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     __pyx_cur_scope->__pyx_v_frontier = __pyx_cur_scope->__pyx_v_new_frontier;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1131
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1152
  *             frontier = new_frontier
  * 
  *         stop_time = monitor_cpu()             # <<<<<<<<<<<<<<
  *         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))
  *         gc.collect()
  */
-  __pyx_t_13 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
   __Pyx_GIVEREF(__pyx_t_13);
   __pyx_cur_scope->__pyx_v_stop_time = __pyx_t_13;
   __pyx_t_13 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1132
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1153
  * 
  *         stop_time = monitor_cpu()
  *         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))             # <<<<<<<<<<<<<<
  *         gc.collect()
  *         logger.info("    Extract time = %f seconds", self.extract_time)
  */
-  __pyx_t_13 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
-  __pyx_t_2 = PyObject_GetAttr(__pyx_t_13, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_GetAttr(__pyx_t_13, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
-  __pyx_t_13 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_start_time); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_start_time); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
-  __pyx_t_15 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_stop_time, __pyx_t_13); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_stop_time, __pyx_t_13); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
   __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
-  __pyx_t_13 = PyTuple_New(2); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = PyTuple_New(2); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_124));
   PyTuple_SET_ITEM(__pyx_t_13, 0, ((PyObject *)__pyx_kp_s_124));
@@ -49661,44 +50156,44 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   PyTuple_SET_ITEM(__pyx_t_13, 1, __pyx_t_15);
   __Pyx_GIVEREF(__pyx_t_15);
   __pyx_t_15 = 0;
-  __pyx_t_15 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_13), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_13), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_13)); __pyx_t_13 = 0;
   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1133
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1154
  *         stop_time = monitor_cpu()
  *         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))
  *         gc.collect()             # <<<<<<<<<<<<<<
  *         logger.info("    Extract time = %f seconds", self.extract_time)
  * 
  */
-  __pyx_t_15 = __Pyx_GetName(__pyx_m, __pyx_n_s__gc); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = __Pyx_GetName(__pyx_m, __pyx_n_s__gc); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
-  __pyx_t_13 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__collect); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__collect); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-  __pyx_t_15 = PyObject_Call(__pyx_t_13, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = PyObject_Call(__pyx_t_13, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
   __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1134
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1155
  *         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))
  *         gc.collect()
  *         logger.info("    Extract time = %f seconds", self.extract_time)             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  __pyx_t_15 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
-  __pyx_t_13 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__info); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = PyObject_GetAttr(__pyx_t_15, __pyx_n_s__info); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_13);
   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
-  __pyx_t_15 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_self->extract_time); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = PyFloat_FromDouble(__pyx_cur_scope->__pyx_v_self->extract_time); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
-  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_125));
   PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_kp_s_125));
@@ -49706,7 +50201,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_15);
   __Pyx_GIVEREF(__pyx_t_15);
   __pyx_t_15 = 0;
-  __pyx_t_15 = PyObject_Call(__pyx_t_13, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_15 = PyObject_Call(__pyx_t_13, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1155; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_15);
   __Pyx_DECREF(__pyx_t_13); __pyx_t_13 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -49734,7 +50229,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   return NULL;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1137
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1158
  * 
  * 
  *     cdef int find_fixpoint(self,             # <<<<<<<<<<<<<<
@@ -49764,7 +50259,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("find_fixpoint", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1152
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1173
  *         cdef int e_low_prev, e_high_prev, f_low_prev, f_high_prev, new_x, new_low_x, new_high_x
  * 
  *         e_low[0] = e_in_low             # <<<<<<<<<<<<<<
@@ -49773,7 +50268,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_e_low[0]) = __pyx_v_e_in_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1153
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1174
  * 
  *         e_low[0] = e_in_low
  *         e_high[0] = e_in_high             # <<<<<<<<<<<<<<
@@ -49782,19 +50277,19 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_e_high[0]) = __pyx_v_e_in_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1154
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1175
  *         e_low[0] = e_in_low
  *         e_high[0] = e_in_high
  *         self.find_projection(f_low, f_high, f_links_low, f_links_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *         if e_low[0] == -1:
  *             # low-priority corner case: if phrase w is unaligned,
  */
-  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_low, __pyx_t_1, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1175; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_low, __pyx_t_1, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1175; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1155
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1176
  *         e_high[0] = e_in_high
  *         self.find_projection(f_low, f_high, f_links_low, f_links_high, e_low, e_high)
  *         if e_low[0] == -1:             # <<<<<<<<<<<<<<
@@ -49804,7 +50299,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   __pyx_t_3 = ((__pyx_v_e_low[0]) == -1);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1161
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
  *             # rule X -> X_1 w X_2 / X_1 X_2.    This is probably
  *             # not worth the bother, though.
  *             return 0             # <<<<<<<<<<<<<<
@@ -49816,7 +50311,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     goto __pyx_L3;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1162
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1183
  *             # not worth the bother, though.
  *             return 0
  *         elif e_in_low != -1 and e_low[0] != e_in_low:             # <<<<<<<<<<<<<<
@@ -49832,7 +50327,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1163
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1184
  *             return 0
  *         elif e_in_low != -1 and e_low[0] != e_in_low:
  *             if e_in_low - e_low[0] < min_ex_size:             # <<<<<<<<<<<<<<
@@ -49842,7 +50337,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_5 = ((__pyx_v_e_in_low - (__pyx_v_e_low[0])) < __pyx_v_min_ex_size);
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1164
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1185
  *         elif e_in_low != -1 and e_low[0] != e_in_low:
  *             if e_in_low - e_low[0] < min_ex_size:
  *                 e_low[0] = e_in_low - min_ex_size             # <<<<<<<<<<<<<<
@@ -49851,7 +50346,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
       (__pyx_v_e_low[0]) = (__pyx_v_e_in_low - __pyx_v_min_ex_size);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1165
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1186
  *             if e_in_low - e_low[0] < min_ex_size:
  *                 e_low[0] = e_in_low - min_ex_size
  *                 if e_low[0] < 0:             # <<<<<<<<<<<<<<
@@ -49861,7 +50356,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_5 = ((__pyx_v_e_low[0]) < 0);
       if (__pyx_t_5) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1166
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1187
  *                 e_low[0] = e_in_low - min_ex_size
  *                 if e_low[0] < 0:
  *                     return 0             # <<<<<<<<<<<<<<
@@ -49880,7 +50375,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1168
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1189
  *                     return 0
  * 
  *         if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -49890,7 +50385,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   __pyx_t_5 = (((__pyx_v_e_high[0]) - (__pyx_v_e_low[0])) > __pyx_v_max_e_len);
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1169
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1190
  * 
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0             # <<<<<<<<<<<<<<
@@ -49902,7 +50397,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     goto __pyx_L6;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1170
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1191
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:             # <<<<<<<<<<<<<<
@@ -49918,7 +50413,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1171
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1192
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:
  *             if e_high[0] - e_in_high < min_ex_size:             # <<<<<<<<<<<<<<
@@ -49928,7 +50423,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = (((__pyx_v_e_high[0]) - __pyx_v_e_in_high) < __pyx_v_min_ex_size);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1172
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1193
  *         elif e_in_high != -1 and e_high[0] != e_in_high:
  *             if e_high[0] - e_in_high < min_ex_size:
  *                 e_high[0] = e_in_high + min_ex_size             # <<<<<<<<<<<<<<
@@ -49937,7 +50432,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
       (__pyx_v_e_high[0]) = (__pyx_v_e_in_high + __pyx_v_min_ex_size);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1173
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1194
  *             if e_high[0] - e_in_high < min_ex_size:
  *                 e_high[0] = e_in_high + min_ex_size
  *                 if e_high[0] > e_sent_len:             # <<<<<<<<<<<<<<
@@ -49947,7 +50442,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = ((__pyx_v_e_high[0]) > __pyx_v_e_sent_len);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1174
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1195
  *                 e_high[0] = e_in_high + min_ex_size
  *                 if e_high[0] > e_sent_len:
  *                     return 0             # <<<<<<<<<<<<<<
@@ -49966,7 +50461,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1176
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1197
  *                     return 0
  * 
  *         f_back_low[0] = -1             # <<<<<<<<<<<<<<
@@ -49975,7 +50470,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_f_back_low[0]) = -1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1177
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1198
  * 
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1             # <<<<<<<<<<<<<<
@@ -49984,7 +50479,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_f_back_high[0]) = -1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1178
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1199
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1
  *         f_low_prev = f_low             # <<<<<<<<<<<<<<
@@ -49993,17 +50488,17 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_f_low_prev = __pyx_v_f_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1179
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1200
  *         f_back_high[0] = -1
  *         f_low_prev = f_low
  *         f_high_prev = f_high             # <<<<<<<<<<<<<<
  *         new_x = 0
  *         new_low_x = 0
  */
-  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1179; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1200; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_f_high_prev = __pyx_t_1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1180
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1201
  *         f_low_prev = f_low
  *         f_high_prev = f_high
  *         new_x = 0             # <<<<<<<<<<<<<<
@@ -50012,7 +50507,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1181
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1202
  *         f_high_prev = f_high
  *         new_x = 0
  *         new_low_x = 0             # <<<<<<<<<<<<<<
@@ -50021,7 +50516,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_low_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1203
  *         new_x = 0
  *         new_low_x = 0
  *         new_high_x = 0             # <<<<<<<<<<<<<<
@@ -50030,7 +50525,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_high_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1184
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1205
  *         new_high_x = 0
  * 
  *         while True:             # <<<<<<<<<<<<<<
@@ -50040,7 +50535,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   while (1) {
     if (!1) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1186
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1207
  *         while True:
  * 
  *             if f_back_low[0] == -1:             # <<<<<<<<<<<<<<
@@ -50050,45 +50545,45 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = ((__pyx_v_f_back_low[0]) == -1);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1187
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1208
  * 
  *             if f_back_low[0] == -1:
  *                 self.find_projection(e_low[0], e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1187; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1208; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       goto __pyx_L11;
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1189
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1210
  *                 self.find_projection(e_low[0], e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  * 
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), __pyx_v_e_low_prev, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1189; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), __pyx_v_e_low_prev, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1210; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1190
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1211
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  * 
  *             if f_back_low[0] > f_low:
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_e_high_prev, (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_e_high_prev, (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1211; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
     }
     __pyx_L11:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1192
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1213
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  * 
  *             if f_back_low[0] > f_low:             # <<<<<<<<<<<<<<
@@ -50098,7 +50593,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = ((__pyx_v_f_back_low[0]) > __pyx_v_f_low);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1193
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1214
  * 
  *             if f_back_low[0] > f_low:
  *                 f_back_low[0] = f_low             # <<<<<<<<<<<<<<
@@ -50110,35 +50605,35 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1195
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1216
  *                 f_back_low[0] = f_low
  * 
  *             if f_back_high[0] < f_high:             # <<<<<<<<<<<<<<
  *                 f_back_high[0] = f_high
  * 
  */
-    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_6 = PyObject_RichCompare(__pyx_t_2, __pyx_v_f_high, Py_LT); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_RichCompare(__pyx_t_2, __pyx_v_f_high, Py_LT); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1195; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1196
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1217
  * 
  *             if f_back_high[0] < f_high:
  *                 f_back_high[0] = f_high             # <<<<<<<<<<<<<<
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:
  */
-      __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1196; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1217; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       (__pyx_v_f_back_high[0]) = __pyx_t_1;
       goto __pyx_L13;
     }
     __pyx_L13:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1198
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1219
  *                 f_back_high[0] = f_high
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:             # <<<<<<<<<<<<<<
@@ -50154,7 +50649,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1199
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1220
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -50167,7 +50662,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1201
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1222
  *                 return 1
  * 
  *             if allow_low_x == 0 and f_back_low[0] < f_low:             # <<<<<<<<<<<<<<
@@ -50183,7 +50678,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1203
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1224
  *             if allow_low_x == 0 and f_back_low[0] < f_low:
  *                 # FAIL: f phrase is not tight
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50196,7 +50691,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1205
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1226
  *                 return 0
  * 
  *             if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50206,7 +50701,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_5 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1207
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1228
  *             if f_back_high[0] - f_back_low[0] > max_f_len:
  *                 # FAIL: f back projection is too wide
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50219,7 +50714,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1209
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1230
  *                 return 0
  * 
  *             if allow_high_x == 0 and f_back_high[0] > f_high:             # <<<<<<<<<<<<<<
@@ -50228,11 +50723,11 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_t_5 = (__pyx_v_allow_high_x == 0);
     if (__pyx_t_5) {
-      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1209; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
-      __pyx_t_2 = PyObject_RichCompare(__pyx_t_6, __pyx_v_f_high, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1209; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyObject_RichCompare(__pyx_t_6, __pyx_v_f_high, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1209; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __pyx_t_4 = __pyx_t_3;
     } else {
@@ -50240,7 +50735,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1211
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1232
  *             if allow_high_x == 0 and f_back_high[0] > f_high:
  *                 # FAIL: extension on high side not allowed
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50253,7 +50748,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1213
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1234
  *                 return 0
  * 
  *             if f_low != f_back_low[0]:             # <<<<<<<<<<<<<<
@@ -50263,7 +50758,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = (__pyx_v_f_low != (__pyx_v_f_back_low[0]));
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1214
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1235
  * 
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:             # <<<<<<<<<<<<<<
@@ -50273,7 +50768,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_new_low_x == 0);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1215
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1236
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -50283,7 +50778,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (__pyx_v_new_x >= __pyx_v_max_new_x);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1217
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1238
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on low side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50296,7 +50791,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1219
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -50305,7 +50800,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
           __pyx_v_new_x = (__pyx_v_new_x + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1220
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1241
  *                     else:
  *                         new_x = new_x + 1
  *                         new_low_x = 1             # <<<<<<<<<<<<<<
@@ -50319,7 +50814,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L19:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1221
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
  *                         new_x = new_x + 1
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:             # <<<<<<<<<<<<<<
@@ -50329,7 +50824,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = ((__pyx_v_f_low - (__pyx_v_f_back_low[0])) < __pyx_v_min_fx_size);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1222
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1243
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:
  *                     f_back_low[0] = f_low - min_fx_size             # <<<<<<<<<<<<<<
@@ -50338,7 +50833,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
         (__pyx_v_f_back_low[0]) = (__pyx_v_f_low - __pyx_v_min_fx_size);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1223
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1244
  *                 if f_low - f_back_low[0] < min_fx_size:
  *                     f_back_low[0] = f_low - min_fx_size
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50348,7 +50843,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1225
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1246
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50361,7 +50856,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1226
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0
  *                     if f_back_low[0] < 0:             # <<<<<<<<<<<<<<
@@ -50371,7 +50866,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = ((__pyx_v_f_back_low[0]) < 0);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1228
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1249
  *                     if f_back_low[0] < 0:
  *                         # FAIL: extension required on low side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50390,22 +50885,22 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L18:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1230
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
  *                         return 0
  * 
  *             if f_high != f_back_high[0]:             # <<<<<<<<<<<<<<
  *                 if new_high_x == 0:
  *                     if new_x >= max_new_x:
  */
-    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_6 = PyObject_RichCompare(__pyx_v_f_high, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_RichCompare(__pyx_v_f_high, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1231
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1252
  * 
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:             # <<<<<<<<<<<<<<
@@ -50415,7 +50910,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_new_high_x == 0);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1232
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1253
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -50425,7 +50920,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (__pyx_v_new_x >= __pyx_v_max_new_x);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1234
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1255
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on high side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50438,7 +50933,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1236
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -50447,7 +50942,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
           __pyx_v_new_x = (__pyx_v_new_x + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1237
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1258
  *                     else:
  *                         new_x = new_x + 1
  *                         new_high_x = 1             # <<<<<<<<<<<<<<
@@ -50461,44 +50956,44 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L25:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1238
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1259
  *                         new_x = new_x + 1
  *                         new_high_x = 1
  *                 if f_back_high[0] - f_high < min_fx_size:             # <<<<<<<<<<<<<<
  *                     f_back_high[0] = f_high + min_fx_size
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  */
-      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
-      __pyx_t_2 = PyNumber_Subtract(__pyx_t_6, __pyx_v_f_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_Subtract(__pyx_t_6, __pyx_v_f_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-      __pyx_t_6 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_6);
-      __pyx_t_7 = PyObject_RichCompare(__pyx_t_2, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_RichCompare(__pyx_t_2, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
-      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1238; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1239
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1260
  *                         new_high_x = 1
  *                 if f_back_high[0] - f_high < min_fx_size:
  *                     f_back_high[0] = f_high + min_fx_size             # <<<<<<<<<<<<<<
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on high side violates max initial length
  */
-        __pyx_t_7 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1260; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
-        __pyx_t_6 = PyNumber_Add(__pyx_v_f_high, __pyx_t_7); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = PyNumber_Add(__pyx_v_f_high, __pyx_t_7); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1260; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_6);
         __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
-        __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_t_6); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1239; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_t_6); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1260; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
         (__pyx_v_f_back_high[0]) = __pyx_t_1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1261
  *                 if f_back_high[0] - f_high < min_fx_size:
  *                     f_back_high[0] = f_high + min_fx_size
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50508,7 +51003,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1263
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50521,7 +51016,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L28:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1243
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0
  *                     if f_back_high[0] > f_sent_len:             # <<<<<<<<<<<<<<
@@ -50531,7 +51026,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = ((__pyx_v_f_back_high[0]) > __pyx_v_f_sent_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1245
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1266
  *                     if f_back_high[0] > f_sent_len:
  *                         # FAIL: extension required on high side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50550,7 +51045,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L24:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1268
  *                         return 0
  * 
  *             e_low_prev = e_low[0]             # <<<<<<<<<<<<<<
@@ -50559,7 +51054,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_e_low_prev = (__pyx_v_e_low[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1248
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1269
  * 
  *             e_low_prev = e_low[0]
  *             e_high_prev = e_high[0]             # <<<<<<<<<<<<<<
@@ -50568,29 +51063,29 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_e_high_prev = (__pyx_v_e_high[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1250
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1271
  *             e_high_prev = e_high[0]
  * 
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  */
-    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_f_back_low[0]), __pyx_v_f_low_prev, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1250; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_f_back_low[0]), __pyx_v_f_low_prev, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1271; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1272
  * 
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1
  */
-    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_high_prev, (__pyx_v_f_back_high[0]), __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_high_prev, (__pyx_v_f_back_high[0]), __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1272; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1252
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1273
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:             # <<<<<<<<<<<<<<
@@ -50606,7 +51101,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1253
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1274
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -50619,7 +51114,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L30:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1254
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1275
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1
  *             if allow_arbitrary_x == 0:             # <<<<<<<<<<<<<<
@@ -50629,7 +51124,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_3 = (__pyx_v_allow_arbitrary_x == 0);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1256
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1277
  *             if allow_arbitrary_x == 0:
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50642,7 +51137,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L31:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0
  *             if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -50652,7 +51147,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_3 = (((__pyx_v_e_high[0]) - (__pyx_v_e_low[0])) > __pyx_v_max_e_len);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1259
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1280
  *             if e_high[0] - e_low[0] > max_e_len:
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50665,7 +51160,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L32:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1260
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1281
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0
  *             f_low_prev = f_back_low[0]             # <<<<<<<<<<<<<<
@@ -50674,7 +51169,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_f_low_prev = (__pyx_v_f_back_low[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1261
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1282
  *                 return 0
  *             f_low_prev = f_back_low[0]
  *             f_high_prev = f_back_high[0]             # <<<<<<<<<<<<<<
@@ -50697,7 +51192,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1285
  * 
  * 
  *     cdef find_projection(self, int in_low, int in_high, int* in_links_low, int* in_links_high,             # <<<<<<<<<<<<<<
@@ -50715,7 +51210,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("find_projection", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1267
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1288
  *                         int* out_low, int* out_high):
  *         cdef int i
  *         for i from in_low <= i < in_high:             # <<<<<<<<<<<<<<
@@ -50725,7 +51220,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   __pyx_t_1 = __pyx_v_in_high;
   for (__pyx_v_i = __pyx_v_in_low; __pyx_v_i < __pyx_t_1; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1268
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1289
  *         cdef int i
  *         for i from in_low <= i < in_high:
  *             if in_links_low[i] != -1:             # <<<<<<<<<<<<<<
@@ -50735,7 +51230,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
     __pyx_t_2 = ((__pyx_v_in_links_low[__pyx_v_i]) != -1);
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1269
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1290
  *         for i from in_low <= i < in_high:
  *             if in_links_low[i] != -1:
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:             # <<<<<<<<<<<<<<
@@ -50751,7 +51246,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1270
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1291
  *             if in_links_low[i] != -1:
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:
  *                     out_low[0] = in_links_low[i]             # <<<<<<<<<<<<<<
@@ -50763,7 +51258,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       __pyx_L6:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1271
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:
  *                     out_low[0] = in_links_low[i]
  *                 if out_high[0] == -1 or in_links_high[i] > out_high[0]:             # <<<<<<<<<<<<<<
@@ -50779,7 +51274,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1272
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
  *                     out_low[0] = in_links_low[i]
  *                 if out_high[0] == -1 or in_links_high[i] > out_high[0]:
  *                     out_high[0] = in_links_high[i]             # <<<<<<<<<<<<<<
@@ -50801,7 +51296,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1275
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1296
  * 
  * 
  *     cdef int* int_arr_extend(self, int* arr, int* arr_len, int* data, int data_len):             # <<<<<<<<<<<<<<
@@ -50815,7 +51310,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("int_arr_extend", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1277
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1298
  *     cdef int* int_arr_extend(self, int* arr, int* arr_len, int* data, int data_len):
  *         cdef int new_len
  *         new_len = arr_len[0] + data_len             # <<<<<<<<<<<<<<
@@ -50824,7 +51319,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   __pyx_v_new_len = ((__pyx_v_arr_len[0]) + __pyx_v_data_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1299
  *         cdef int new_len
  *         new_len = arr_len[0] + data_len
  *         arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -50833,7 +51328,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1279
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1300
  *         new_len = arr_len[0] + data_len
  *         arr = <int*> realloc(arr, new_len*sizeof(int))
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -50842,7 +51337,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   memcpy((__pyx_v_arr + (__pyx_v_arr_len[0])), __pyx_v_data, (__pyx_v_data_len * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1280
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1301
  *         arr = <int*> realloc(arr, new_len*sizeof(int))
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -50851,7 +51346,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   (__pyx_v_arr_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1281
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1302
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len
  *         return arr             # <<<<<<<<<<<<<<
@@ -50867,7 +51362,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1284
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
  * 
  * 
  *     cdef extract_phrases(self, int e_low, int e_high, int* e_gap_low, int* e_gap_high, int* e_links_low, int num_gaps,             # <<<<<<<<<<<<<<
@@ -50913,19 +51408,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("extract_phrases", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1313
  *         cdef result
  * 
  *         result = []             # <<<<<<<<<<<<<<
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1292; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1313; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_result = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1314
  * 
  *         result = []
  *         len1 = 0             # <<<<<<<<<<<<<<
@@ -50934,7 +51429,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1294
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1315
  *         result = []
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -50943,19 +51438,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps1 = ((int *)malloc(0));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1295
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1316
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)
  *         ephr_arr = IntList()             # <<<<<<<<<<<<<<
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1295; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_ephr_arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1297
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1318
  *         ephr_arr = IntList()
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))             # <<<<<<<<<<<<<<
@@ -50964,7 +51459,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gap_order = ((int *)malloc((__pyx_v_num_gaps * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1298
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1319
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:             # <<<<<<<<<<<<<<
@@ -50974,7 +51469,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_2 = (__pyx_v_num_gaps > 0);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1299
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1320
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0             # <<<<<<<<<<<<<<
@@ -50983,7 +51478,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     (__pyx_v_e_gap_order[0]) = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1300
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1321
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -50993,7 +51488,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_3 = __pyx_v_num_gaps;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1301
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1322
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:             # <<<<<<<<<<<<<<
@@ -51003,7 +51498,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_4 = __pyx_v_i;
       for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1302
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1323
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51013,7 +51508,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_t_2 = ((__pyx_v_e_gap_low[__pyx_v_i]) < (__pyx_v_e_gap_low[__pyx_v_j]));
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1303
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1324
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:             # <<<<<<<<<<<<<<
@@ -51023,7 +51518,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
           __pyx_t_5 = __pyx_v_i;
           for (__pyx_v_k = __pyx_v_j; __pyx_v_k < __pyx_t_5; __pyx_v_k++) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1304
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1325
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]             # <<<<<<<<<<<<<<
@@ -51033,7 +51528,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
             (__pyx_v_e_gap_order[(__pyx_v_k + 1)]) = (__pyx_v_e_gap_order[__pyx_v_k]);
           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1326
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i             # <<<<<<<<<<<<<<
@@ -51042,7 +51537,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
           (__pyx_v_e_gap_order[__pyx_v_j]) = __pyx_v_i;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1306
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1327
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i
  *                         break             # <<<<<<<<<<<<<<
@@ -51056,7 +51551,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1308
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1329
  *                         break
  *                 else:
  *                     e_gap_order[i] = i             # <<<<<<<<<<<<<<
@@ -51071,7 +51566,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1310
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
  *                     e_gap_order[i] = i
  * 
  *         e_x_low = e_low             # <<<<<<<<<<<<<<
@@ -51080,7 +51575,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_x_low = __pyx_v_e_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1311
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1332
  * 
  *         e_x_low = e_low
  *         e_x_high = e_high             # <<<<<<<<<<<<<<
@@ -51089,7 +51584,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_x_high = __pyx_v_e_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1312
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1333
  *         e_x_low = e_low
  *         e_x_high = e_high
  *         if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51099,7 +51594,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_2 = (!__pyx_v_self->tight_phrases);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1313
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1334
  *         e_x_high = e_high
  *         if not self.tight_phrases:
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -51122,7 +51617,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1314
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
  *         if not self.tight_phrases:
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:
  *                 e_x_low = e_x_low - 1             # <<<<<<<<<<<<<<
@@ -51132,7 +51627,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_v_e_x_low = (__pyx_v_e_x_low - 1);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1315
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1336
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:
  *                 e_x_low = e_x_low - 1
  *             while e_x_high < e_sent_len and e_x_high - e_low < self.train_max_initial_size and e_links_low[e_x_high] == -1:             # <<<<<<<<<<<<<<
@@ -51155,7 +51650,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_2) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1316
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1337
  *                 e_x_low = e_x_low - 1
  *             while e_x_high < e_sent_len and e_x_high - e_low < self.train_max_initial_size and e_links_low[e_x_high] == -1:
  *                 e_x_high = e_x_high + 1             # <<<<<<<<<<<<<<
@@ -51168,7 +51663,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L11:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1318
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
  *                 e_x_high = e_x_high + 1
  * 
  *         for i from e_x_low <= i <= e_low:             # <<<<<<<<<<<<<<
@@ -51178,7 +51673,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_e_low;
   for (__pyx_v_i = __pyx_v_e_x_low; __pyx_v_i <= __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1319
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1340
  * 
  *         for i from e_x_low <= i <= e_low:
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)             # <<<<<<<<<<<<<<
@@ -51188,7 +51683,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_v_e_gaps1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps1, (&__pyx_v_len1), (&__pyx_v_i), 1);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1321
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1342
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)
  * 
  *         for i from 0 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -51198,7 +51693,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_num_gaps;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1322
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1343
  * 
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51207,7 +51702,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_gaps2 = ((int *)malloc(0));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1323
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1344
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)
  *             len2 = 0             # <<<<<<<<<<<<<<
@@ -51216,7 +51711,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_len2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1325
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
  *             len2 = 0
  * 
  *             j = e_gap_order[i]             # <<<<<<<<<<<<<<
@@ -51225,7 +51720,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_j = (__pyx_v_e_gap_order[__pyx_v_i]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1326
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1347
  * 
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]             # <<<<<<<<<<<<<<
@@ -51234,7 +51729,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_x_gap_low = (__pyx_v_e_gap_low[__pyx_v_j]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1327
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1348
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]             # <<<<<<<<<<<<<<
@@ -51243,7 +51738,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_x_gap_high = (__pyx_v_e_gap_high[__pyx_v_j]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1328
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1349
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]
  *             if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51253,7 +51748,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_2 = (!__pyx_v_self->tight_phrases);
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1329
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1350
  *             e_x_gap_high = e_gap_high[j]
  *             if not self.tight_phrases:
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -51270,7 +51765,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_7) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1330
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
  *             if not self.tight_phrases:
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:
  *                     e_x_gap_low = e_x_gap_low - 1             # <<<<<<<<<<<<<<
@@ -51280,7 +51775,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_v_e_x_gap_low = (__pyx_v_e_x_gap_low - 1);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1352
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:
  *                     e_x_gap_low = e_x_gap_low - 1
  *                 while e_x_gap_high < e_x_high and e_links_low[e_x_gap_high] == -1:             # <<<<<<<<<<<<<<
@@ -51297,7 +51792,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_6) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1332
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1353
  *                     e_x_gap_low = e_x_gap_low - 1
  *                 while e_x_gap_high < e_x_high and e_links_low[e_x_gap_high] == -1:
  *                     e_x_gap_high = e_x_gap_high + 1             # <<<<<<<<<<<<<<
@@ -51310,7 +51805,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
     __pyx_L20:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1334
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
  *                     e_x_gap_high = e_x_gap_high + 1
  * 
  *             k = 0             # <<<<<<<<<<<<<<
@@ -51319,7 +51814,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_k = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1356
  * 
  *             k = 0
  *             step = 1+(i*2)             # <<<<<<<<<<<<<<
@@ -51328,7 +51823,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_step = (1 + (__pyx_v_i * 2));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1336
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1357
  *             k = 0
  *             step = 1+(i*2)
  *             while k < len1:             # <<<<<<<<<<<<<<
@@ -51339,7 +51834,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_6 = (__pyx_v_k < __pyx_v_len1);
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1337
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1358
  *             step = 1+(i*2)
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51349,7 +51844,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_4 = (__pyx_v_e_gap_low[__pyx_v_j]);
       for (__pyx_v_m = __pyx_v_e_x_gap_low; __pyx_v_m <= __pyx_t_4; __pyx_v_m++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1338
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1359
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:
  *                     if m >= e_gaps1[k+step-1]:             # <<<<<<<<<<<<<<
@@ -51359,7 +51854,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_t_6 = (__pyx_v_m >= (__pyx_v_e_gaps1[((__pyx_v_k + __pyx_v_step) - 1)]));
         if (__pyx_t_6) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1360
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:
  *                     if m >= e_gaps1[k+step-1]:
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:             # <<<<<<<<<<<<<<
@@ -51369,7 +51864,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
           __pyx_t_5 = __pyx_v_e_x_gap_high;
           for (__pyx_v_n = (__pyx_v_e_gap_high[__pyx_v_j]); __pyx_v_n <= __pyx_t_5; __pyx_v_n++) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1340
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1361
  *                     if m >= e_gaps1[k+step-1]:
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length             # <<<<<<<<<<<<<<
@@ -51379,7 +51874,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
             __pyx_t_6 = ((__pyx_v_n - __pyx_v_m) >= 1);
             if (__pyx_t_6) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1341
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1362
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)             # <<<<<<<<<<<<<<
@@ -51388,7 +51883,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
               __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (__pyx_v_e_gaps1 + __pyx_v_k), __pyx_v_step);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1342
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1363
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)             # <<<<<<<<<<<<<<
@@ -51397,7 +51892,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
               __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (&__pyx_v_m), 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1343
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1364
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)             # <<<<<<<<<<<<<<
@@ -51414,7 +51909,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_L29:;
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1344
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1365
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)
  *                 k = k + step             # <<<<<<<<<<<<<<
@@ -51424,7 +51919,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_v_k = (__pyx_v_k + __pyx_v_step);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1345
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1366
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)
  *                 k = k + step
  *             free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -51433,7 +51928,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     free(__pyx_v_e_gaps1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1367
  *                 k = k + step
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -51442,7 +51937,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_gaps1 = __pyx_v_e_gaps2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1347
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1368
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2
  *             len1 = len2             # <<<<<<<<<<<<<<
@@ -51452,7 +51947,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_v_len1 = __pyx_v_len2;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1349
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1370
  *             len1 = len2
  * 
  *         step = 1+(num_gaps*2)             # <<<<<<<<<<<<<<
@@ -51461,7 +51956,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_step = (1 + (__pyx_v_num_gaps * 2));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1350
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1371
  * 
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51470,7 +51965,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps2 = ((int *)malloc(0));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1372
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0             # <<<<<<<<<<<<<<
@@ -51479,7 +51974,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1352
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:             # <<<<<<<<<<<<<<
@@ -51489,7 +51984,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_e_x_high;
   for (__pyx_v_i = __pyx_v_e_high; __pyx_v_i <= __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1353
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1374
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:
  *             j = 0             # <<<<<<<<<<<<<<
@@ -51498,7 +51993,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_j = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1354
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
  *         for i from e_high <= i <= e_x_high:
  *             j = 0
  *             while j < len1:             # <<<<<<<<<<<<<<
@@ -51509,7 +52004,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_6 = (__pyx_v_j < __pyx_v_len1);
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1376
  *             j = 0
  *             while j < len1:
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:             # <<<<<<<<<<<<<<
@@ -51525,7 +52020,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1356
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
  *             while j < len1:
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)             # <<<<<<<<<<<<<<
@@ -51534,7 +52029,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
         __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (__pyx_v_e_gaps1 + __pyx_v_j), __pyx_v_step);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1357
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1378
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)             # <<<<<<<<<<<<<<
@@ -51546,7 +52041,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L37:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1358
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)
  *                 j = j + step             # <<<<<<<<<<<<<<
@@ -51557,7 +52052,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1359
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1380
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)
  *                 j = j + step
  *         free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -51566,7 +52061,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gaps1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1360
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
  *                 j = j + step
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -51575,7 +52070,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps1 = __pyx_v_e_gaps2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1361
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1382
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2
  *         len1 = len2             # <<<<<<<<<<<<<<
@@ -51584,7 +52079,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len1 = __pyx_v_len2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1363
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1384
  *         len1 = len2
  * 
  *         step = (num_gaps+1)*2             # <<<<<<<<<<<<<<
@@ -51593,7 +52088,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_step = ((__pyx_v_num_gaps + 1) * 2);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1364
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1385
  * 
  *         step = (num_gaps+1)*2
  *         i = 0             # <<<<<<<<<<<<<<
@@ -51602,7 +52097,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1366
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
  *         i = 0
  * 
  *         while i < len1:             # <<<<<<<<<<<<<<
@@ -51613,7 +52108,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_2 = (__pyx_v_i < __pyx_v_len1);
     if (!__pyx_t_2) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1367
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1388
  * 
  *         while i < len1:
  *             ephr_arr._clear()             # <<<<<<<<<<<<<<
@@ -51622,7 +52117,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_ephr_arr->__pyx_vtab)->_clear(__pyx_v_ephr_arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1368
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1389
  *         while i < len1:
  *             ephr_arr._clear()
  *             num_chunks = 0             # <<<<<<<<<<<<<<
@@ -51631,20 +52126,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_num_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1369
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
  *             ephr_arr._clear()
  *             num_chunks = 0
  *             indexes = []             # <<<<<<<<<<<<<<
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  */
-    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1369; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1390; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_XDECREF(((PyObject *)__pyx_v_indexes));
     __pyx_v_indexes = __pyx_t_1;
     __pyx_t_1 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1370
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1391
  *             num_chunks = 0
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:             # <<<<<<<<<<<<<<
@@ -51654,7 +52149,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_9 = (__pyx_v_num_gaps + 1);
     for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_9; __pyx_v_j++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1371
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1392
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:             # <<<<<<<<<<<<<<
@@ -51664,7 +52159,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_2 = ((__pyx_v_e_gaps1[(__pyx_v_i + (2 * __pyx_v_j))]) < (__pyx_v_e_gaps1[((__pyx_v_i + (2 * __pyx_v_j)) + 1)]));
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1372
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1393
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  *                     num_chunks = num_chunks + 1             # <<<<<<<<<<<<<<
@@ -51676,7 +52171,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  *                     num_chunks = num_chunks + 1
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:             # <<<<<<<<<<<<<<
@@ -51686,19 +52181,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_3 = (__pyx_v_e_gaps1[((__pyx_v_i + (2 * __pyx_v_j)) + 1)]);
       for (__pyx_v_k = (__pyx_v_e_gaps1[(__pyx_v_i + (2 * __pyx_v_j))]); __pyx_v_k < __pyx_t_3; __pyx_v_k++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1374
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1395
  *                     num_chunks = num_chunks + 1
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:
  *                     indexes.append(k)             # <<<<<<<<<<<<<<
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:
  */
-        __pyx_t_1 = PyInt_FromLong(__pyx_v_k); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1374; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyInt_FromLong(__pyx_v_k); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1374; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1396
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:
  *                     indexes.append(k)
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])             # <<<<<<<<<<<<<<
@@ -51706,14 +52201,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  */
         __pyx_t_4 = (__pyx_v_self->eda->data->arr[(__pyx_v_e_sent_start + __pyx_v_k)]);
-        __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_self->eid2symid), __pyx_t_4, sizeof(int), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1375; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_self->eid2symid), __pyx_t_4, sizeof(int), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1375; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_ephr_arr->__pyx_vtab)->_append(__pyx_v_ephr_arr, __pyx_t_4);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1376
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1397
  *                     indexes.append(k)
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:             # <<<<<<<<<<<<<<
@@ -51723,19 +52218,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_2 = (__pyx_v_j < __pyx_v_num_gaps);
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1398
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))             # <<<<<<<<<<<<<<
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step
  */
-        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, ((__pyx_v_e_gap_order[__pyx_v_j]) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1377; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, ((__pyx_v_e_gap_order[__pyx_v_j]) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1377; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1378
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1399
  *                 if j < num_gaps:
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))             # <<<<<<<<<<<<<<
@@ -51748,7 +52243,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_L45:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step             # <<<<<<<<<<<<<<
@@ -51757,7 +52252,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_i = (__pyx_v_i + __pyx_v_step);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1380
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1401
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step
  *             if ephr_arr.len <= self.max_target_length and num_chunks <= self.max_target_chunks:             # <<<<<<<<<<<<<<
@@ -51773,22 +52268,22 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
  *             i = i + step
  *             if ephr_arr.len <= self.max_target_length and num_chunks <= self.max_target_chunks:
  *                 result.append((Phrase(ephr_arr),indexes))             # <<<<<<<<<<<<<<
  * 
  *         free(e_gaps1)
  */
-      __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1381; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1402; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_INCREF(((PyObject *)__pyx_v_ephr_arr));
       PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_ephr_arr));
       __Pyx_GIVEREF(((PyObject *)__pyx_v_ephr_arr));
-      __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1381; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1402; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_11);
       __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-      __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1381; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyTuple_New(2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1402; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_t_11);
       __Pyx_GIVEREF(__pyx_t_11);
@@ -51796,7 +52291,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       PyTuple_SET_ITEM(__pyx_t_1, 1, ((PyObject *)__pyx_v_indexes));
       __Pyx_GIVEREF(((PyObject *)__pyx_v_indexes));
       __pyx_t_11 = 0;
-      __pyx_t_11 = __Pyx_PyObject_Append(__pyx_v_result, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1381; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = __Pyx_PyObject_Append(__pyx_v_result, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1402; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_11);
       __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
       __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
@@ -51805,7 +52300,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_L46:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1383
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1404
  *                 result.append((Phrase(ephr_arr),indexes))
  * 
  *         free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -51814,7 +52309,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gaps1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1384
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1405
  * 
  *         free(e_gaps1)
  *         free(e_gap_order)             # <<<<<<<<<<<<<<
@@ -51823,7 +52318,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gap_order);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1385
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1406
  *         free(e_gaps1)
  *         free(e_gap_order)
  *         return result             # <<<<<<<<<<<<<<
@@ -51851,7 +52346,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1408
  *         return result
  * 
  *     cdef IntList create_alignments(self, int* sent_links, int num_links, findexes, eindexes):             # <<<<<<<<<<<<<<
@@ -51879,55 +52374,55 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("create_alignments", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1389
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1410
  *     cdef IntList create_alignments(self, int* sent_links, int num_links, findexes, eindexes):
  *         cdef unsigned i
  *         cdef IntList ret = IntList()             # <<<<<<<<<<<<<<
  *         for i in range(len(findexes)):
  *             s = findexes[i]
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1389; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1410; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_ret = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1411
  *         cdef unsigned i
  *         cdef IntList ret = IntList()
  *         for i in range(len(findexes)):             # <<<<<<<<<<<<<<
  *             s = findexes[i]
  *             if (s<0):
  */
-  __pyx_t_2 = PyObject_Length(__pyx_v_findexes); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1390; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Length(__pyx_v_findexes); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1411; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   for (__pyx_t_3 = 0; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
     __pyx_v_i = __pyx_t_3;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1391
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1412
  *         cdef IntList ret = IntList()
  *         for i in range(len(findexes)):
  *             s = findexes[i]             # <<<<<<<<<<<<<<
  *             if (s<0):
  *                 continue
  */
-    __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_findexes, __pyx_v_i, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_findexes, __pyx_v_i, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1412; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_XDECREF(__pyx_v_s);
     __pyx_v_s = __pyx_t_1;
     __pyx_t_1 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1392
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1413
  *         for i in range(len(findexes)):
  *             s = findexes[i]
  *             if (s<0):             # <<<<<<<<<<<<<<
  *                 continue
  *             idx = 0
  */
-    __pyx_t_1 = PyObject_RichCompare(__pyx_v_s, __pyx_int_0, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1392; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_RichCompare(__pyx_v_s, __pyx_int_0, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1413; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1413; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1393
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1414
  *             s = findexes[i]
  *             if (s<0):
  *                 continue             # <<<<<<<<<<<<<<
@@ -51939,7 +52434,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1415
  *             if (s<0):
  *                 continue
  *             idx = 0             # <<<<<<<<<<<<<<
@@ -51950,7 +52445,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
     __Pyx_XDECREF(__pyx_v_idx);
     __pyx_v_idx = __pyx_int_0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1395
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1416
  *                 continue
  *             idx = 0
  *             while (idx < num_links*2):             # <<<<<<<<<<<<<<
@@ -51958,51 +52453,51 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
  *                     j = eindexes.index(sent_links[idx+1])
  */
     while (1) {
-      __pyx_t_1 = PyInt_FromLong((__pyx_v_num_links * 2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyInt_FromLong((__pyx_v_num_links * 2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
-      __pyx_t_5 = PyObject_RichCompare(__pyx_v_idx, __pyx_t_1, Py_LT); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_RichCompare(__pyx_v_idx, __pyx_t_1, Py_LT); __Pyx_XGOTREF(__pyx_t_5); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_5); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1416; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       if (!__pyx_t_4) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1396
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1417
  *             idx = 0
  *             while (idx < num_links*2):
  *                 if (sent_links[idx] == s):             # <<<<<<<<<<<<<<
  *                     j = eindexes.index(sent_links[idx+1])
  *                     ret.append(i*65536+j)
  */
-      __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_v_idx); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_5 = PyInt_FromLong((__pyx_v_sent_links[__pyx_t_6])); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_v_idx); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1417; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyInt_FromLong((__pyx_v_sent_links[__pyx_t_6])); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1417; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_1 = PyObject_RichCompare(__pyx_t_5, __pyx_v_s, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_RichCompare(__pyx_t_5, __pyx_v_s, Py_EQ); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1417; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1417; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1397
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1418
  *             while (idx < num_links*2):
  *                 if (sent_links[idx] == s):
  *                     j = eindexes.index(sent_links[idx+1])             # <<<<<<<<<<<<<<
  *                     ret.append(i*65536+j)
  *                 idx += 2
  */
-        __pyx_t_1 = PyObject_GetAttr(__pyx_v_eindexes, __pyx_n_s__index); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_GetAttr(__pyx_v_eindexes, __pyx_n_s__index); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_5 = PyNumber_Add(__pyx_v_idx, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyNumber_Add(__pyx_v_idx, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
-        __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_t_5); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = __Pyx_PyIndex_AsSsize_t(__pyx_t_5); if (unlikely((__pyx_t_6 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-        __pyx_t_5 = PyInt_FromLong((__pyx_v_sent_links[__pyx_t_6])); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyInt_FromLong((__pyx_v_sent_links[__pyx_t_6])); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
-        __pyx_t_7 = PyTuple_New(1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyTuple_New(1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
         PyTuple_SET_ITEM(__pyx_t_7, 0, __pyx_t_5);
         __Pyx_GIVEREF(__pyx_t_5);
         __pyx_t_5 = 0;
-        __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1397; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1418; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
@@ -52010,19 +52505,19 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
         __pyx_v_j = __pyx_t_5;
         __pyx_t_5 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1398
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1419
  *                 if (sent_links[idx] == s):
  *                     j = eindexes.index(sent_links[idx+1])
  *                     ret.append(i*65536+j)             # <<<<<<<<<<<<<<
  *                 idx += 2
  *         return ret
  */
-        __pyx_t_5 = PyInt_FromLong((__pyx_v_i * 65536)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyInt_FromLong((__pyx_v_i * 65536)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
-        __pyx_t_7 = PyNumber_Add(__pyx_t_5, __pyx_v_j); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyNumber_Add(__pyx_t_5, __pyx_v_j); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-        __pyx_t_5 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_ret), __pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_ret), __pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_5);
         __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
         __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
@@ -52030,14 +52525,14 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
       }
       __pyx_L8:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1399
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1420
  *                     j = eindexes.index(sent_links[idx+1])
  *                     ret.append(i*65536+j)
  *                 idx += 2             # <<<<<<<<<<<<<<
  *         return ret
  * 
  */
-      __pyx_t_5 = PyNumber_InPlaceAdd(__pyx_v_idx, __pyx_int_2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1399; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyNumber_InPlaceAdd(__pyx_v_idx, __pyx_int_2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1420; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(__pyx_v_idx);
       __pyx_v_idx = __pyx_t_5;
@@ -52046,7 +52541,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
     __pyx_L3_continue:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1421
  *                     ret.append(i*65536+j)
  *                 idx += 2
  *         return ret             # <<<<<<<<<<<<<<
@@ -52076,7 +52571,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1423
  *         return ret
  * 
  *     cdef extract(self, Phrase phrase, Matching* matching, int* chunklen, int num_chunks):             # <<<<<<<<<<<<<<
@@ -52170,19 +52665,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("extract", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1415
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1436
  *         cdef reason_for_failure
  * 
  *         fphr_arr = IntList()             # <<<<<<<<<<<<<<
  *         phrase_len = phrase.n
  *         extracts = []
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1415; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_fphr_arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1416
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1437
  * 
  *         fphr_arr = IntList()
  *         phrase_len = phrase.n             # <<<<<<<<<<<<<<
@@ -52191,19 +52686,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_phrase_len = __pyx_v_phrase->n;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1417
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1438
  *         fphr_arr = IntList()
  *         phrase_len = phrase.n
  *         extracts = []             # <<<<<<<<<<<<<<
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)
  * 
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1417; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1438; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_extracts = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1418
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1439
  *         phrase_len = phrase.n
  *         extracts = []
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)             # <<<<<<<<<<<<<<
@@ -52212,7 +52707,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_sent_links = ((struct __pyx_vtabstruct_3_sa_Alignment *)__pyx_v_self->alignment->__pyx_vtab)->_get_sent_links(__pyx_v_self->alignment, __pyx_v_matching->sent_id, (&__pyx_v_num_links));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1420
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1441
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]             # <<<<<<<<<<<<<<
@@ -52221,7 +52716,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_start = (__pyx_v_self->eda->sent_index->arr[__pyx_v_matching->sent_id]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1421
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1442
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]             # <<<<<<<<<<<<<<
@@ -52230,7 +52725,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_end = (__pyx_v_self->eda->sent_index->arr[(__pyx_v_matching->sent_id + 1)]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1422
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1443
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]
  *         e_sent_len = e_sent_end - e_sent_start - 1             # <<<<<<<<<<<<<<
@@ -52239,7 +52734,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_len = ((__pyx_v_e_sent_end - __pyx_v_e_sent_start) - 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1423
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1444
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]
  *         e_sent_len = e_sent_end - e_sent_start - 1
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]             # <<<<<<<<<<<<<<
@@ -52248,7 +52743,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_start = (__pyx_v_self->fda->sent_index->arr[__pyx_v_matching->sent_id]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1424
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1445
  *         e_sent_len = e_sent_end - e_sent_start - 1
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]
  *         f_sent_end = self.fda.sent_index.arr[matching.sent_id+1]             # <<<<<<<<<<<<<<
@@ -52257,7 +52752,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_end = (__pyx_v_self->fda->sent_index->arr[(__pyx_v_matching->sent_id + 1)]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1425
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1446
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]
  *         f_sent_end = self.fda.sent_index.arr[matching.sent_id+1]
  *         f_sent_len = f_sent_end - f_sent_start - 1             # <<<<<<<<<<<<<<
@@ -52266,21 +52761,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_len = ((__pyx_v_f_sent_end - __pyx_v_f_sent_start) - 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1427
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1448
  *         f_sent_len = f_sent_end - f_sent_start - 1
  * 
  *         self.findexes1.reset()             # <<<<<<<<<<<<<<
  *         sofar = 0
  *         for i in range(num_chunks):
  */
-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes1), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes1), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1427; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1428
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1449
  * 
  *         self.findexes1.reset()
  *         sofar = 0             # <<<<<<<<<<<<<<
@@ -52290,7 +52785,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __Pyx_INCREF(__pyx_int_0);
   __pyx_v_sofar = __pyx_int_0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1429
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1450
  *         self.findexes1.reset()
  *         sofar = 0
  *         for i in range(num_chunks):             # <<<<<<<<<<<<<<
@@ -52301,7 +52796,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_i = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1430
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1451
  *         sofar = 0
  *         for i in range(num_chunks):
  *             for j in range(chunklen[i]):             # <<<<<<<<<<<<<<
@@ -52312,35 +52807,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
       __pyx_v_j = __pyx_t_6;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1431
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1452
  *         for i in range(num_chunks):
  *             for j in range(chunklen[i]):
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);             # <<<<<<<<<<<<<<
  *                 sofar += 1
  *             if (i+1<num_chunks):
  */
-      __pyx_t_2 = PyInt_FromLong((((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong((((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1452; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1452; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1432
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1453
  *             for j in range(chunklen[i]):
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);
  *                 sofar += 1             # <<<<<<<<<<<<<<
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])
  */
-      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1453; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_DECREF(__pyx_v_sofar);
       __pyx_v_sofar = __pyx_t_1;
       __pyx_t_1 = 0;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1433
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1454
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);
  *                 sofar += 1
  *             if (i+1<num_chunks):             # <<<<<<<<<<<<<<
@@ -52350,28 +52845,28 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_7 = ((__pyx_v_i + 1) < __pyx_v_num_chunks);
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1434
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1455
  *                 sofar += 1
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])             # <<<<<<<<<<<<<<
  *                 sofar += 1
  * 
  */
-      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_phrase), __pyx_v_sofar); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1434; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_phrase), __pyx_v_sofar); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
-      __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1434; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1435
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1456
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])
  *                 sofar += 1             # <<<<<<<<<<<<<<
  * 
  * 
  */
-      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1435; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_v_sofar);
       __pyx_v_sofar = __pyx_t_2;
@@ -52381,7 +52876,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_L7:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1438
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1459
  * 
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52390,7 +52885,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_links_low = ((int *)malloc((__pyx_v_e_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1439
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1460
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52399,7 +52894,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_links_high = ((int *)malloc((__pyx_v_e_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1440
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1461
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52408,7 +52903,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_links_low = ((int *)malloc((__pyx_v_f_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1441
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1462
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52417,7 +52912,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_links_high = ((int *)malloc((__pyx_v_f_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1442
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1463
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52426,7 +52921,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_gap_low = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1443
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1464
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52435,7 +52930,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_gap_high = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1444
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1465
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52444,7 +52939,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_gap_low = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1445
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1466
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52453,7 +52948,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_gap_high = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1446
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1467
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52462,7 +52957,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_f_gap_low, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1447
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1468
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52471,7 +52966,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_f_gap_high, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1448
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1469
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_low, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52480,7 +52975,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_e_gap_low, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1449
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1470
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_high, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52489,7 +52984,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_e_gap_high, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1451
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1472
  *         memset(e_gap_high, 0, (num_chunks+1)*sizeof(int))
  * 
  *         reason_for_failure = ""             # <<<<<<<<<<<<<<
@@ -52499,7 +52994,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_45));
   __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_45);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1453
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1474
  *         reason_for_failure = ""
  * 
  *         for i from 0 <= i < e_sent_len:             # <<<<<<<<<<<<<<
@@ -52509,7 +53004,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __pyx_t_3 = __pyx_v_e_sent_len;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1454
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1475
  * 
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -52518,7 +53013,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     (__pyx_v_e_links_low[__pyx_v_i]) = -1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1455
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1476
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -52528,7 +53023,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     (__pyx_v_e_links_high[__pyx_v_i]) = -1;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1456
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1477
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:             # <<<<<<<<<<<<<<
@@ -52538,7 +53033,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __pyx_t_3 = __pyx_v_f_sent_len;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1457
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1478
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -52547,7 +53042,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     (__pyx_v_f_links_low[__pyx_v_i]) = -1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1458
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1479
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1
  *             f_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -52557,7 +53052,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     (__pyx_v_f_links_high[__pyx_v_i]) = -1;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1464
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1485
  *         # links that we care about (but then how to look up
  *         # when we want to check something on the e side?)
  *         i = 0             # <<<<<<<<<<<<<<
@@ -52566,7 +53061,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1465
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1486
  *         # when we want to check something on the e side?)
  *         i = 0
  *         while i < num_links*2:             # <<<<<<<<<<<<<<
@@ -52577,7 +53072,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_7 = (__pyx_v_i < (__pyx_v_num_links * 2));
     if (!__pyx_t_7) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1466
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1487
  *         i = 0
  *         while i < num_links*2:
  *             f_i = sent_links[i]             # <<<<<<<<<<<<<<
@@ -52586,7 +53081,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_f_i = (__pyx_v_sent_links[__pyx_v_i]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1467
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1488
  *         while i < num_links*2:
  *             f_i = sent_links[i]
  *             e_i = sent_links[i+1]             # <<<<<<<<<<<<<<
@@ -52595,7 +53090,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_e_i = (__pyx_v_sent_links[(__pyx_v_i + 1)]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1468
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1489
  *             f_i = sent_links[i]
  *             e_i = sent_links[i+1]
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:             # <<<<<<<<<<<<<<
@@ -52611,7 +53106,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1469
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1490
  *             e_i = sent_links[i+1]
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:
  *                 f_links_low[f_i] = e_i             # <<<<<<<<<<<<<<
@@ -52623,7 +53118,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1470
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:
  *                 f_links_low[f_i] = e_i
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:             # <<<<<<<<<<<<<<
@@ -52639,7 +53134,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_8) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1471
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
  *                 f_links_low[f_i] = e_i
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:
  *                 f_links_high[f_i] = e_i + 1             # <<<<<<<<<<<<<<
@@ -52651,7 +53146,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1472
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:
  *                 f_links_high[f_i] = e_i + 1
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:             # <<<<<<<<<<<<<<
@@ -52667,7 +53162,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1473
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
  *                 f_links_high[f_i] = e_i + 1
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:
  *                 e_links_low[e_i] = f_i             # <<<<<<<<<<<<<<
@@ -52679,7 +53174,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1474
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:
  *                 e_links_low[e_i] = f_i
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:             # <<<<<<<<<<<<<<
@@ -52695,7 +53190,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1475
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
  *                 e_links_low[e_i] = f_i
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:
  *                 e_links_high[e_i] = f_i + 1             # <<<<<<<<<<<<<<
@@ -52707,7 +53202,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1476
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1497
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:
  *                 e_links_high[e_i] = f_i + 1
  *             i = i + 2             # <<<<<<<<<<<<<<
@@ -52717,19 +53212,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_v_i = (__pyx_v_i + 2);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1478
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1499
  *             i = i + 2
  * 
  *         als = []             # <<<<<<<<<<<<<<
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])
  */
-  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1478; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1499; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __pyx_v_als = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1479
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1500
  * 
  *         als = []
  *         for x in range(matching.start,matching.end):             # <<<<<<<<<<<<<<
@@ -52740,18 +53235,18 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   for (__pyx_t_4 = __pyx_v_matching->start; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_x = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1480
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1501
  *         als = []
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])             # <<<<<<<<<<<<<<
  *             als.append(al)
  *         # check all source-side alignment constraints
  */
-    __pyx_t_2 = PyInt_FromLong(((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong(((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_1 = PyInt_FromLong((__pyx_v_f_links_low[((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyInt_FromLong((__pyx_v_f_links_low[((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_10 = PyTuple_New(2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1480; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyTuple_New(2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
     PyTuple_SET_ITEM(__pyx_t_10, 0, __pyx_t_2);
     __Pyx_GIVEREF(__pyx_t_2);
@@ -52763,17 +53258,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_v_al = __pyx_t_10;
     __pyx_t_10 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1481
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1502
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])
  *             als.append(al)             # <<<<<<<<<<<<<<
  *         # check all source-side alignment constraints
  *         met_constraints = 1
  */
-    __pyx_t_11 = PyList_Append(__pyx_v_als, ((PyObject *)__pyx_v_al)); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_11 = PyList_Append(__pyx_v_als, ((PyObject *)__pyx_v_al)); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1502; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1483
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
  *             als.append(al)
  *         # check all source-side alignment constraints
  *         met_constraints = 1             # <<<<<<<<<<<<<<
@@ -52782,7 +53277,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_met_constraints = 1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1484
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1505
  *         # check all source-side alignment constraints
  *         met_constraints = 1
  *         if self.require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -52791,7 +53286,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   if (__pyx_v_self->require_aligned_terminal) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1485
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1506
  *         met_constraints = 1
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0             # <<<<<<<<<<<<<<
@@ -52800,7 +53295,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_num_aligned_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1486
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1507
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:             # <<<<<<<<<<<<<<
@@ -52810,7 +53305,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_3 = __pyx_v_num_chunks;
     for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1487
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1508
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:
  *                 for j from 0 <= j < chunklen[i]:             # <<<<<<<<<<<<<<
@@ -52820,7 +53315,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_chunklen[__pyx_v_i]);
       for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1488
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1509
  *             for i from 0 <= i < num_chunks:
  *                 for j from 0 <= j < chunklen[i]:
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:             # <<<<<<<<<<<<<<
@@ -52830,7 +53325,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)]) > -1);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1489
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1510
  *                 for j from 0 <= j < chunklen[i]:
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:
  *                         num_aligned_chunks = num_aligned_chunks + 1             # <<<<<<<<<<<<<<
@@ -52839,7 +53334,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           __pyx_v_num_aligned_chunks = (__pyx_v_num_aligned_chunks + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1490
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1511
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break             # <<<<<<<<<<<<<<
@@ -52854,7 +53349,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_L24_break:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break
  *             if num_aligned_chunks == 0:             # <<<<<<<<<<<<<<
@@ -52864,7 +53359,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_9 = (__pyx_v_num_aligned_chunks == 0);
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1513
  *                         break
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"             # <<<<<<<<<<<<<<
@@ -52875,7 +53370,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __Pyx_DECREF(__pyx_v_reason_for_failure);
       __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_126);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1514
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -52887,7 +53382,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L26:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1515
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:             # <<<<<<<<<<<<<<
@@ -52902,7 +53397,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1516
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"             # <<<<<<<<<<<<<<
@@ -52913,7 +53408,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __Pyx_DECREF(__pyx_v_reason_for_failure);
       __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_127);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1517
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -52928,7 +53423,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L20:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1498
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
  *                 met_constraints = 0
  * 
  *         if met_constraints and self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -52943,7 +53438,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   if (__pyx_t_9) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1500
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1521
  *         if met_constraints and self.tight_phrases:
  *             # outside edge constraints are checked later
  *             for i from 0 <= i < num_chunks-1:             # <<<<<<<<<<<<<<
@@ -52953,7 +53448,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_12 = (__pyx_v_num_chunks - 1);
     for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_12; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1501
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1522
  *             # outside edge constraints are checked later
  *             for i from 0 <= i < num_chunks-1:
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:             # <<<<<<<<<<<<<<
@@ -52963,7 +53458,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + (__pyx_v_chunklen[__pyx_v_i])) - __pyx_v_f_sent_start)]) == -1);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1502
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1523
  *             for i from 0 <= i < num_chunks-1:
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"             # <<<<<<<<<<<<<<
@@ -52974,7 +53469,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __Pyx_DECREF(__pyx_v_reason_for_failure);
         __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_128);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1503
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1524
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0             # <<<<<<<<<<<<<<
@@ -52983,7 +53478,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_met_constraints = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1525
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -52995,7 +53490,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L31:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1505
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
  *                     met_constraints = 0
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:             # <<<<<<<<<<<<<<
@@ -53005,7 +53500,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_i) + 1)]) - 1) - __pyx_v_f_sent_start)]) == -1);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1506
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1527
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"             # <<<<<<<<<<<<<<
@@ -53016,7 +53511,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __Pyx_DECREF(__pyx_v_reason_for_failure);
         __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_128);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1507
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1528
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53025,7 +53520,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_met_constraints = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1508
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1529
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -53042,7 +53537,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L28:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1510
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1531
  *                     break
  * 
  *         f_low = matching.arr[matching.start] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53051,7 +53546,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_low = ((__pyx_v_matching->arr[__pyx_v_matching->start]) - __pyx_v_f_sent_start);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1511
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1532
  * 
  *         f_low = matching.arr[matching.start] - f_sent_start
  *         f_high = matching.arr[matching.start + matching.size - 1] + chunklen[num_chunks-1] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53060,7 +53555,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_high = (((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_matching->size) - 1)]) + (__pyx_v_chunklen[(__pyx_v_num_chunks - 1)])) - __pyx_v_f_sent_start);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1533
  *         f_low = matching.arr[matching.start] - f_sent_start
  *         f_high = matching.arr[matching.start + matching.size - 1] + chunklen[num_chunks-1] - f_sent_start
  *         if met_constraints:             # <<<<<<<<<<<<<<
@@ -53069,17 +53564,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   if (__pyx_v_met_constraints) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1514
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1535
  *         if met_constraints:
  * 
  *             if self.find_fixpoint(f_low, f_high, f_links_low, f_links_high, e_links_low, e_links_high,             # <<<<<<<<<<<<<<
  *                                 -1, -1, &e_low, &e_high, &f_back_low, &f_back_high, f_sent_len, e_sent_len,
  *                                 self.train_max_initial_size, self.train_max_initial_size,
  */
-    __pyx_t_10 = PyInt_FromLong(__pyx_v_f_high); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1514; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyInt_FromLong(__pyx_v_f_high); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1535; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1518
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
  *                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                 self.train_min_gap_size, 0,
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):             # <<<<<<<<<<<<<<
@@ -53090,7 +53585,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1540
  *                                 self.train_min_gap_size, 0,
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0             # <<<<<<<<<<<<<<
@@ -53099,7 +53594,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
       __pyx_v_gap_error = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1520
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1541
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0
  *                 num_gaps = 0             # <<<<<<<<<<<<<<
@@ -53108,7 +53603,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
       __pyx_v_num_gaps = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1522
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1543
  *                 num_gaps = 0
  * 
  *                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -53118,7 +53613,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_f_back_low < __pyx_v_f_low);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1523
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1544
  * 
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low             # <<<<<<<<<<<<<<
@@ -53127,7 +53622,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[0]) = __pyx_v_f_back_low;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1524
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1545
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low             # <<<<<<<<<<<<<<
@@ -53136,7 +53631,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[0]) = __pyx_v_f_low;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1525
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1546
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1             # <<<<<<<<<<<<<<
@@ -53145,7 +53640,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_num_gaps = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1547
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1
  *                     gap_start = 0             # <<<<<<<<<<<<<<
@@ -53154,7 +53649,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_gap_start = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1527
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1548
  *                     num_gaps = 1
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53163,7 +53658,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_phrase_len = (__pyx_v_phrase_len + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1528
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1549
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53173,7 +53668,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_phrase_len > __pyx_v_self->max_length);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1529
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1550
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53185,7 +53680,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L36:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1530
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53194,7 +53689,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_self->tight_phrases) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1531
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1552
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -53210,7 +53705,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1532
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1553
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -53219,7 +53714,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1533
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1554
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:
  *                             gap_error = 1
  *                             reason_for_failure = "Inside edges of preceding subphrase are not tight"             # <<<<<<<<<<<<<<
@@ -53239,7 +53734,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1535
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
  *                             reason_for_failure = "Inside edges of preceding subphrase are not tight"
  *                 else:
  *                     gap_start = 1             # <<<<<<<<<<<<<<
@@ -53248,7 +53743,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_gap_start = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1536
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1557
  *                 else:
  *                     gap_start = 1
  *                     if self.tight_phrases and f_links_low[f_low] == -1:             # <<<<<<<<<<<<<<
@@ -53263,7 +53758,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1560
  *                         # this is not a hard error.    we can't extract this phrase
  *                         # but we still might be able to extract a superphrase
  *                         met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53277,7 +53772,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L35:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1541
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
  *                         met_constraints = 0
  * 
  *                 for i from 0 <= i < matching.size - 1:             # <<<<<<<<<<<<<<
@@ -53287,7 +53782,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_12 = (__pyx_v_matching->size - 1);
       for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_12; __pyx_v_i++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1542
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1563
  * 
  *                 for i from 0 <= i < matching.size - 1:
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53296,7 +53791,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[(1 + __pyx_v_i)]) = (((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + (__pyx_v_chunklen[__pyx_v_i])) - __pyx_v_f_sent_start);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1543
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1564
  *                 for i from 0 <= i < matching.size - 1:
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start
  *                     f_gap_high[1+i] = matching.arr[matching.start+i+1] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53305,7 +53800,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[(1 + __pyx_v_i)]) = ((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_i) + 1)]) - __pyx_v_f_sent_start);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1544
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1565
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start
  *                     f_gap_high[1+i] = matching.arr[matching.start+i+1] - f_sent_start
  *                     num_gaps = num_gaps + 1             # <<<<<<<<<<<<<<
@@ -53315,7 +53810,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_v_num_gaps = (__pyx_v_num_gaps + 1);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1546
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1567
  *                     num_gaps = num_gaps + 1
  * 
  *                 if f_high < f_back_high:             # <<<<<<<<<<<<<<
@@ -53325,7 +53820,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_f_high < __pyx_v_f_back_high);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1547
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1568
  * 
  *                 if f_high < f_back_high:
  *                     f_gap_low[gap_start+num_gaps] = f_high             # <<<<<<<<<<<<<<
@@ -53334,7 +53829,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_num_gaps)]) = __pyx_v_f_high;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1548
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1569
  *                 if f_high < f_back_high:
  *                     f_gap_low[gap_start+num_gaps] = f_high
  *                     f_gap_high[gap_start+num_gaps] = f_back_high             # <<<<<<<<<<<<<<
@@ -53343,7 +53838,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_num_gaps)]) = __pyx_v_f_back_high;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1549
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1570
  *                     f_gap_low[gap_start+num_gaps] = f_high
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1             # <<<<<<<<<<<<<<
@@ -53352,7 +53847,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_num_gaps = (__pyx_v_num_gaps + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1550
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1571
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53361,7 +53856,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_phrase_len = (__pyx_v_phrase_len + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1572
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53371,7 +53866,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_phrase_len > __pyx_v_self->max_length);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1552
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1573
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53383,7 +53878,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L43:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1553
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1574
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53392,7 +53887,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_self->tight_phrases) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1554
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1575
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:             # <<<<<<<<<<<<<<
@@ -53408,7 +53903,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1555
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -53417,7 +53912,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1577
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:
  *                             gap_error = 1
  *                             reason_for_failure = "Inside edges of following subphrase are not tight"             # <<<<<<<<<<<<<<
@@ -53437,7 +53932,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1558
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
  *                             reason_for_failure = "Inside edges of following subphrase are not tight"
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -53452,7 +53947,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1559
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1580
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:
  *                         met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53466,7 +53961,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1561
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
  *                         met_constraints = 0
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -53476,7 +53971,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_gap_error == 0);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1583
  * 
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low             # <<<<<<<<<<<<<<
@@ -53485,7 +53980,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_e_word_count = (__pyx_v_e_high - __pyx_v_e_low);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1563
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1584
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low
  *                     for i from 0 <= i < num_gaps: # check integrity of subphrases             # <<<<<<<<<<<<<<
@@ -53495,17 +53990,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_3 = __pyx_v_num_gaps;
         for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1564
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1585
  *                     e_word_count = e_high - e_low
  *                     for i from 0 <= i < num_gaps: # check integrity of subphrases
  *                         if self.find_fixpoint(f_gap_low[gap_start+i], f_gap_high[gap_start+i],             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low+gap_start+i, e_gap_high+gap_start+i,
  */
-          __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1564; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1585; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1569
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
  *                                             f_gap_low+gap_start+i, f_gap_high+gap_start+i,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -53516,7 +54011,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1571
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1592
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0) == 0:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -53525,18 +54020,18 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1572
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1593
  *                                             0, 0, 0, 0, 0, 0, 0) == 0:
  *                             gap_error = 1
  *                             reason_for_failure = "Subphrase [%d, %d] failed integrity check" % (f_gap_low[gap_start+i], f_gap_high[gap_start+i])             # <<<<<<<<<<<<<<
  *                             break
  * 
  */
-            __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1572; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_10);
-            __pyx_t_1 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1572; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
-            __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1572; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_10);
             __Pyx_GIVEREF(__pyx_t_10);
@@ -53544,14 +54039,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __Pyx_GIVEREF(__pyx_t_1);
             __pyx_t_10 = 0;
             __pyx_t_1 = 0;
-            __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_131), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1572; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_131), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(((PyObject *)__pyx_t_1));
             __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
             __Pyx_DECREF(__pyx_v_reason_for_failure);
             __pyx_v_reason_for_failure = ((PyObject *)__pyx_t_1);
             __pyx_t_1 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1573
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1594
  *                             gap_error = 1
  *                             reason_for_failure = "Subphrase [%d, %d] failed integrity check" % (f_gap_low[gap_start+i], f_gap_high[gap_start+i])
  *                             break             # <<<<<<<<<<<<<<
@@ -53568,7 +54063,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L47:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1575
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1596
  *                             break
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -53578,7 +54073,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_gap_error == 0);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1597
  * 
  *                 if gap_error == 0:
  *                     i = 1             # <<<<<<<<<<<<<<
@@ -53587,21 +54082,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_i = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1577
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
  *                 if gap_error == 0:
  *                     i = 1
  *                     self.findexes.reset()             # <<<<<<<<<<<<<<
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  */
-        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1577; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1598; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1577; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1598; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1578
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1599
  *                     i = 1
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -53611,7 +54106,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_f_back_low < __pyx_v_f_low);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1600
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -53620,7 +54115,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1580
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1601
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         i = i+1             # <<<<<<<<<<<<<<
@@ -53629,16 +54124,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           __pyx_v_i = (__pyx_v_i + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1581
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1602
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         i = i+1
  *                         self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:
  */
-          __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1581; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1581; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_1);
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
           __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -53646,27 +54141,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L52:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
  *                         i = i+1
  *                         self.findexes.append(sym_setindex(self.category, i))
  *                     self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):
  */
-        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1582; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1582; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
         PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_self->findexes1));
         __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-        __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1582; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
         __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1583
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1604
  *                         self.findexes.append(sym_setindex(self.category, i))
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -53676,7 +54171,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_3 = __pyx_v_phrase->n;
         for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1584
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1605
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -53686,7 +54181,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
           if (__pyx_t_4) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1585
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1606
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -53695,7 +54190,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1586
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1607
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))
  *                             i = i + 1             # <<<<<<<<<<<<<<
@@ -53707,7 +54202,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1588
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1609
  *                             i = i + 1
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -53719,7 +54214,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_L55:;
         }
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1589
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -53729,7 +54224,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_f_back_high > __pyx_v_f_high);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1611
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -53738,16 +54233,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1591
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1612
  *                     if f_back_high > f_high:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  * 
  *                     fphr = Phrase(fphr_arr)
  */
-          __pyx_t_10 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1591; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1612; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
-          __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_10); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1591; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_10); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1612; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -53755,25 +54250,25 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L56:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1593
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
  *                         self.findexes.append(sym_setindex(self.category, i))
  * 
  *                     fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                     if met_constraints:
  *                         phrase_list = self.extract_phrases(e_low, e_high, e_gap_low + gap_start, e_gap_high + gap_start, e_links_low, num_gaps,
  */
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1614; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
         PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_fphr_arr));
         __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-        __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1614; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
         __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_10);
         __pyx_t_10 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1594
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1615
  * 
  *                     fphr = Phrase(fphr_arr)
  *                     if met_constraints:             # <<<<<<<<<<<<<<
@@ -53782,47 +54277,47 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_met_constraints) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1597
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1618
  *                         phrase_list = self.extract_phrases(e_low, e_high, e_gap_low + gap_start, e_gap_high + gap_start, e_links_low, num_gaps,
  *                                             f_back_low, f_back_high, f_gap_low + gap_start, f_gap_high + gap_start, f_links_low,
  *                                             matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                         if len(phrase_list) > 0:
  *                             pair_count = 1.0 / len(phrase_list)
  */
-          __pyx_t_10 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_low, __pyx_v_e_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, __pyx_v_num_gaps, __pyx_v_f_back_low, __pyx_v_f_back_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1595; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_low, __pyx_v_e_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, __pyx_v_num_gaps, __pyx_v_f_back_low, __pyx_v_f_back_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1616; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
           __pyx_v_phrase_list = __pyx_t_10;
           __pyx_t_10 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1619
  *                                             f_back_low, f_back_high, f_gap_low + gap_start, f_gap_high + gap_start, f_links_low,
  *                                             matching.sent_id, e_sent_len, e_sent_start)
  *                         if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                             pair_count = 1.0 / len(phrase_list)
  *                         else:
  */
-          __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1598; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1619; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_t_9 = (__pyx_t_13 > 0);
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1599
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1620
  *                                             matching.sent_id, e_sent_len, e_sent_start)
  *                         if len(phrase_list) > 0:
  *                             pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                         else:
  *                             pair_count = 0
  */
-            __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1599; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1620; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             if (unlikely(__pyx_t_13 == 0)) {
               PyErr_Format(PyExc_ZeroDivisionError, "float division");
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1599; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1620; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             }
             __pyx_v_pair_count = (1.0 / __pyx_t_13);
             goto __pyx_L58;
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1601
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1622
  *                             pair_count = 1.0 / len(phrase_list)
  *                         else:
  *                             pair_count = 0             # <<<<<<<<<<<<<<
@@ -53831,22 +54326,22 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_pair_count = 0.0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1602
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1623
  *                         else:
  *                             pair_count = 0
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  */
-            __pyx_t_10 = PyInt_FromLong(__pyx_v_f_back_low); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_10 = PyInt_FromLong(__pyx_v_f_back_low); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_10);
-            __pyx_t_2 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_1 = PyInt_FromLong(__pyx_v_e_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyInt_FromLong(__pyx_v_e_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
-            __pyx_t_14 = PyInt_FromLong(__pyx_v_e_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_14 = PyInt_FromLong(__pyx_v_e_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_14);
-            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_10);
             __Pyx_GIVEREF(__pyx_t_10);
@@ -53860,7 +54355,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_2 = 0;
             __pyx_t_1 = 0;
             __pyx_t_14 = 0;
-            __pyx_t_14 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_132), ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_14 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_132), ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(((PyObject *)__pyx_t_14));
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
             __Pyx_DECREF(__pyx_v_reason_for_failure);
@@ -53869,7 +54364,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L58:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1624
  *                             pair_count = 0
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)
  *                         for (phrase2,eindexes) in phrase_list:             # <<<<<<<<<<<<<<
@@ -53880,7 +54375,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_14 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_14); __pyx_t_13 = 0;
             __pyx_t_16 = NULL;
           } else {
-            __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_14);
             __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
           }
@@ -53888,23 +54383,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_14)) {
               if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_14)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
             } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_14)) {
               if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_14)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
             } else {
               __pyx_t_15 = __pyx_t_16(__pyx_t_14);
               if (unlikely(!__pyx_t_15)) {
                 if (PyErr_Occurred()) {
                   if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 break;
               }
@@ -53920,7 +54415,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (unlikely(size != 2)) {
                 if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                 else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               #if CYTHON_COMPILING_IN_CPYTHON
               if (likely(PyTuple_CheckExact(sequence))) {
@@ -53933,14 +54428,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __Pyx_INCREF(__pyx_t_1);
               __Pyx_INCREF(__pyx_t_2);
               #else
-              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-              __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
             } else
             {
               Py_ssize_t index = -1;
-              __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_10);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -53948,7 +54443,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __Pyx_GOTREF(__pyx_t_1);
               index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L61_unpacking_failed;
               __Pyx_GOTREF(__pyx_t_2);
-              if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_17 = NULL;
               __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
               goto __pyx_L62_unpacking_done;
@@ -53956,7 +54451,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
               __pyx_t_17 = NULL;
               if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_L62_unpacking_done:;
             }
             __Pyx_XDECREF(__pyx_v_phrase2);
@@ -53966,7 +54461,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_v_eindexes = __pyx_t_2;
             __pyx_t_2 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1604
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1625
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -53975,31 +54470,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_t_15 = ((PyObject *)__pyx_v_self->findexes);
             __Pyx_INCREF(__pyx_t_15);
-            __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1604; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1625; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
             __Pyx_XDECREF(((PyObject *)__pyx_v_als1));
             __pyx_v_als1 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
             __pyx_t_2 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1605
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1626
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                             extracts.append((fphr, phrase2, pair_count, tuple(als1)))             # <<<<<<<<<<<<<<
  * 
  *                     if (num_gaps < self.max_nonterminals and
  */
-            __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1605; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1605; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             __Pyx_INCREF(((PyObject *)__pyx_v_als1));
             PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_als1));
             __Pyx_GIVEREF(((PyObject *)__pyx_v_als1));
-            __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1605; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1605; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
             PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr));
@@ -54013,7 +54508,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __Pyx_GIVEREF(__pyx_t_1);
             __pyx_t_2 = 0;
             __pyx_t_1 = 0;
-            __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1605; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
             __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -54023,7 +54518,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L57:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1607
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1628
  *                             extracts.append((fphr, phrase2, pair_count, tuple(als1)))
  * 
  *                     if (num_gaps < self.max_nonterminals and             # <<<<<<<<<<<<<<
@@ -54033,7 +54528,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_num_gaps < __pyx_v_self->max_nonterminals);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1608
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1629
  * 
  *                     if (num_gaps < self.max_nonterminals and
  *                         phrase_len < self.max_length and             # <<<<<<<<<<<<<<
@@ -54043,7 +54538,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_phrase_len < __pyx_v_self->max_length);
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1609
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1630
  *                     if (num_gaps < self.max_nonterminals and
  *                         phrase_len < self.max_length and
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):             # <<<<<<<<<<<<<<
@@ -54061,7 +54556,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_7) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1631
  *                         phrase_len < self.max_length and
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):
  *                         if (f_back_low == f_low and             # <<<<<<<<<<<<<<
@@ -54071,7 +54566,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_f_back_low == __pyx_v_f_low);
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1611
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1632
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):
  *                         if (f_back_low == f_low and
  *                                 f_low >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -54081,7 +54576,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = (__pyx_v_f_low >= __pyx_v_self->train_min_gap_size);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1612
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1633
  *                         if (f_back_low == f_low and
  *                                 f_low >= self.train_min_gap_size and
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):             # <<<<<<<<<<<<<<
@@ -54111,7 +54606,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1613
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1634
  *                                 f_low >= self.train_min_gap_size and
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):
  *                             f_x_low = f_low-self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -54120,7 +54615,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_low = (__pyx_v_f_low - __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1635
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -54129,7 +54624,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1615
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1636
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -54138,7 +54633,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1616
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1637
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:             # <<<<<<<<<<<<<<
@@ -54155,7 +54650,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1617
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1638
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -54168,7 +54663,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L65:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1618
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1639
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0 or f_back_high - f_x_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -54184,7 +54679,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1619
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0 or f_back_high - f_x_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -54196,7 +54691,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L68:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1621
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -54205,17 +54700,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1622
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1643
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_x_low, f_back_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_14 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1622; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1626
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54225,7 +54720,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_x_low, __pyx_t_14, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 1, 1, 0, 1, 0)) {
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1628
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1649
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             1, 1, 1, 1, 0, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_low] != -1) and             # <<<<<<<<<<<<<<
@@ -54241,17 +54736,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1629
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
  *                                             1, 1, 1, 1, 0, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_low] != -1) and
  *                                 self.find_fixpoint(f_x_low, f_low,    # check integrity of new subphrase             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  */
-                  __pyx_t_1 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1629; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1650; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_1);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1633
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
  *                                             -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54274,7 +54769,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1635
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -54283,7 +54778,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1636
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1657
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -54292,35 +54787,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1637
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1658
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1637; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1658; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_1 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1637; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1658; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1638
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1659
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1638; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1638; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1639
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1660
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54329,7 +54824,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1661
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -54338,27 +54833,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = (__pyx_v_i + 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1641
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1662
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1641; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1641; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_15 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1641; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1663
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54368,7 +54863,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1643
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1664
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -54378,7 +54873,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1644
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1665
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54387,7 +54882,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1645
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1666
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -54399,7 +54894,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -54411,7 +54906,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L72:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1648
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -54421,7 +54916,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_7 = (__pyx_v_f_back_high > __pyx_v_f_high);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1649
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1670
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54430,16 +54925,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1671
  *                                 if f_back_high > f_high:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  */
-                __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1650; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1671; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
-                __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1650; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1671; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -54447,67 +54942,67 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L73:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1651
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  */
-              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1651; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1672; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1651; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1672; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_15);
               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1675
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  *                                                     e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_15 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1652; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_15;
               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1655
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1676
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  *                                                     e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1655; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_7 = (__pyx_t_13 > 0);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1677
  *                                                     e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1656; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1677; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1656; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1677; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L74;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1658
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1679
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -54518,7 +55013,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L74:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1659
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1680
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -54529,7 +55024,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_15 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_15); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_15 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_15 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __pyx_t_16 = Py_TYPE(__pyx_t_15)->tp_iternext;
               }
@@ -54537,23 +55032,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_15)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_15)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_1 = PyList_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyList_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_15)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_15)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_1 = __pyx_t_16(__pyx_t_15);
                   if (unlikely(!__pyx_t_1)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -54569,7 +55064,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -54582,14 +55077,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_14);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_14 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -54597,7 +55092,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_GOTREF(__pyx_t_14);
                   index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L77_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L78_unpacking_done;
@@ -54605,7 +55100,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L78_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -54615,7 +55110,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1660
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:
  *                                     als2 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -54624,31 +55119,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_1 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_1);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_1, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1660; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_1, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1681; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als2));
                 __pyx_v_als2 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1661
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1682
  *                                 for phrase2,eindexes in phrase_list:
  *                                     als2 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als2)))             # <<<<<<<<<<<<<<
  * 
  *                         if (f_back_high == f_high and
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1661; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1661; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_INCREF(((PyObject *)__pyx_v_als2));
                 PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_als2));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als2));
-                __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1661; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-                __pyx_t_1 = PyTuple_New(4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1661; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyTuple_New(4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_fphr));
@@ -54662,7 +55157,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_14);
                 __pyx_t_2 = 0;
                 __pyx_t_14 = 0;
-                __pyx_t_14 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1661; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
@@ -54675,7 +55170,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L64:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1663
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1684
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als2)))
  * 
  *                         if (f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -54685,7 +55180,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_f_back_high == __pyx_v_f_high);
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1664
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1685
  * 
  *                         if (f_back_high == f_high and
  *                             f_sent_len - f_high >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -54695,7 +55190,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = ((__pyx_v_f_sent_len - __pyx_v_f_high) >= __pyx_v_self->train_min_gap_size);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1665
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1686
  *                         if (f_back_high == f_high and
  *                             f_sent_len - f_high >= self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):             # <<<<<<<<<<<<<<
@@ -54725,7 +55220,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1666
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
  *                             f_sent_len - f_high >= self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):
  *                             f_x_high = f_high+self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -54734,7 +55229,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_high = (__pyx_v_f_high + __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1667
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1688
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -54743,7 +55238,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1689
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -54752,7 +55247,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1690
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -54769,7 +55264,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1670
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1691
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1             # <<<<<<<<<<<<<<
@@ -54782,7 +55277,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L80:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1671
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_back_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -54798,7 +55293,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_back_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -54810,7 +55305,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L83:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1674
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1695
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -54819,17 +55314,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1675
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1696
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_back_low, f_x_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1675; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1696; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1679
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54839,7 +55334,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_back_low, __pyx_t_15, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 1, 0, 1, 1, 0)) {
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1702
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             1, 1, 1, 0, 1, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_high-1] != -1) and             # <<<<<<<<<<<<<<
@@ -54855,17 +55350,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1682
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1703
  *                                             1, 1, 1, 0, 1, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_high-1] != -1) and
  *                                 self.find_fixpoint(f_high, f_x_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low+gap_start+num_gaps, e_gap_high+gap_start+num_gaps,
  */
-                  __pyx_t_14 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1703; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_14);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
  *                                             f_gap_low+gap_start+num_gaps, f_gap_high+gap_start+num_gaps,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54888,7 +55383,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1689
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -54897,7 +55392,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1690
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1711
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -54906,21 +55401,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1691
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1691; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_14 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1691; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1713
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -54930,7 +55425,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_7 = (__pyx_v_f_back_low < __pyx_v_f_low);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1714
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54939,7 +55434,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1694
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1715
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     i = i+1             # <<<<<<<<<<<<<<
@@ -54948,16 +55443,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_v_i = (__pyx_v_i + 1);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1695
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1716
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     i = i+1
  *                                     self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  */
-                __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1695; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1716; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
-                __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1695; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1716; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
@@ -54965,27 +55460,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L85:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1696
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1717
  *                                     i = i+1
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1696; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1696; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_1 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1696; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1697
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1718
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54995,7 +55490,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1698
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1719
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -55005,7 +55500,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1699
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1720
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55014,7 +55509,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1721
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -55026,7 +55521,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1702
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1723
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -55038,7 +55533,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L88:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1703
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1724
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55047,81 +55542,81 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1704
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1725
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1704; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1725; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1704; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1725; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1705
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1726
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  */
-              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1705; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1726; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1705; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1726; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_1);
               __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1729
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1706; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1727; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_1;
               __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1709
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1730
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1709; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_7 = (__pyx_t_13 > 0);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1731
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1710; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1710; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L89;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1733
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55132,7 +55627,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L89:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1713
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55143,7 +55638,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_1 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_1); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __pyx_t_16 = Py_TYPE(__pyx_t_1)->tp_iternext;
               }
@@ -55151,23 +55646,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_1)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_1)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_14 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_1)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_14 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_14 = __pyx_t_16(__pyx_t_1);
                   if (unlikely(!__pyx_t_14)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -55183,7 +55678,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -55196,14 +55691,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_15);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_15 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_14); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_14); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -55211,7 +55706,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_GOTREF(__pyx_t_15);
                   index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L92_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L93_unpacking_done;
@@ -55219,7 +55714,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1713; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L93_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -55229,7 +55724,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1714
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1735
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -55238,31 +55733,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_14 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_14);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_14, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1714; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_14, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1735; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als3));
                 __pyx_v_als3 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1715
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1736
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))             # <<<<<<<<<<<<<<
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1715; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1715; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_INCREF(((PyObject *)__pyx_v_als3));
                 PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_als3));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als3));
-                __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1715; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
-                __pyx_t_14 = PyTuple_New(4); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1715; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyTuple_New(4); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_fphr));
@@ -55276,7 +55771,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_15);
                 __pyx_t_2 = 0;
                 __pyx_t_15 = 0;
-                __pyx_t_15 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_14)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1715; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_14)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
@@ -55289,7 +55784,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L79:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1716
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))
  *                         if (num_gaps < self.max_nonterminals - 1 and             # <<<<<<<<<<<<<<
@@ -55299,7 +55794,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_num_gaps < (__pyx_v_self->max_nonterminals - 1));
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1717
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1738
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and             # <<<<<<<<<<<<<<
@@ -55309,7 +55804,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = ((__pyx_v_phrase_len + 1) < __pyx_v_self->max_length);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1718
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1739
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -55319,7 +55814,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_18 = (__pyx_v_f_back_high == __pyx_v_f_high);
               if (__pyx_t_18) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1719
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1740
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and
  *                             f_back_low == f_low and             # <<<<<<<<<<<<<<
@@ -55329,7 +55824,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_8 = (__pyx_v_f_back_low == __pyx_v_f_low);
                 if (__pyx_t_8) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1720
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1741
  *                             f_back_high == f_high and
  *                             f_back_low == f_low and
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and             # <<<<<<<<<<<<<<
@@ -55339,7 +55834,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __pyx_t_19 = (((__pyx_v_f_back_high - __pyx_v_f_back_low) + (2 * __pyx_v_self->train_min_gap_size)) <= __pyx_v_self->train_max_initial_size);
                   if (__pyx_t_19) {
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1721
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1742
  *                             f_back_low == f_low and
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and
  *                             f_low >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55349,7 +55844,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                     __pyx_t_20 = (__pyx_v_f_low >= __pyx_v_self->train_min_gap_size);
                     if (__pyx_t_20) {
 
-                      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1722
+                      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1743
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and
  *                             f_low >= self.train_min_gap_size and
  *                             f_high <= f_sent_len - self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55359,7 +55854,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                       __pyx_t_21 = (__pyx_v_f_high <= (__pyx_v_f_sent_len - __pyx_v_self->train_min_gap_size));
                       if (__pyx_t_21) {
 
-                        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1723
+                        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1744
  *                             f_low >= self.train_min_gap_size and
  *                             f_high <= f_sent_len - self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_high] != -1))):             # <<<<<<<<<<<<<<
@@ -55409,7 +55904,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1725
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1746
  *                             ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_high] != -1))):
  * 
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -55418,7 +55913,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1726
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1747
  * 
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -55427,7 +55922,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_low = (__pyx_v_f_low - __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1727
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1748
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -55436,7 +55931,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1728
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1749
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:             # <<<<<<<<<<<<<<
@@ -55453,7 +55948,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1729
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1750
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -55466,7 +55961,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L95:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1730
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1751
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0:             # <<<<<<<<<<<<<<
@@ -55476,7 +55971,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_18 = (__pyx_v_f_x_low < 0);
             if (__pyx_t_18) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1731
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1752
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -55488,7 +55983,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L98:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1733
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1754
  *                                 met_constraints = 0
  * 
  *                             f_x_high = f_high+self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -55497,7 +55992,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_high = (__pyx_v_f_high + __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1755
  * 
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -55506,7 +56001,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1735
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1756
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -55523,7 +56018,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_7) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1736
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1757
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1             # <<<<<<<<<<<<<<
@@ -55536,7 +56031,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L99:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1758
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_x_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -55552,7 +56047,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1738
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1759
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_x_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -55564,7 +56059,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L102:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1740
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -55573,17 +56068,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1741
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1762
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_x_low, f_x_high,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1741; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1745
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
  *                                                 e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -55593,7 +56088,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_x_low, __pyx_t_1, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 2, 1, 1, 1, 1)) {
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1747
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1768
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 1, 1, 2, 1, 1, 1, 1) and
  *                                 ((not self.tight_phrases) or (f_links_low[f_x_low] != -1 and f_links_low[f_x_high-1] != -1)) and             # <<<<<<<<<<<<<<
@@ -55615,17 +56110,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_7) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1748
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
  *                                                 1, 1, 2, 1, 1, 1, 1) and
  *                                 ((not self.tight_phrases) or (f_links_low[f_x_low] != -1 and f_links_low[f_x_high-1] != -1)) and
  *                                 self.find_fixpoint(f_x_low, f_low,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  */
-                  __pyx_t_15 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1748; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1769; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_15);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1752
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
  *                                                 -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -55636,17 +56131,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                   if (__pyx_t_3) {
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1754
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1775
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 0, 0, 0, 0, 0, 0, 0) and
  *                                 self.find_fixpoint(f_high, f_x_high,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 -1, -1, e_gap_low+1+num_gaps, e_gap_high+1+num_gaps,
  */
-                    __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1754; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     __Pyx_GOTREF(__pyx_t_15);
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1759
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
  *                                                 f_gap_low+1+num_gaps, f_gap_high+1+num_gaps,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -55674,7 +56169,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1782
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -55683,7 +56178,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1762
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1783
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -55692,35 +56187,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1763
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1763; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_15 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1763; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1764
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1785
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  */
-              __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1764; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1764; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1765
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1786
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55729,7 +56224,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1787
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -55738,27 +56233,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = (__pyx_v_i + 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1767
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1788
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_14 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1768
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1789
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -55768,7 +56263,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1790
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -55778,7 +56273,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1770
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1791
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55787,7 +56282,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1771
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1792
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -55799,7 +56294,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -55811,7 +56306,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L106:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1774
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1795
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55820,81 +56315,81 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1775
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1796
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  */
-              __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1796; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1796; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1776
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1797
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  */
-              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_14);
               __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1779
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1800
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_14 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 2), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 2), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1798; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_14;
               __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1801
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1801; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_8 = (__pyx_t_13 > 0);
               if (__pyx_t_8) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1781
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1802
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1781; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1781; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L107;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1783
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1804
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55905,7 +56400,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L107:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55916,7 +56411,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_14 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_14); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
               }
@@ -55924,23 +56419,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_14)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_14)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_14)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_14)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_15 = __pyx_t_16(__pyx_t_14);
                   if (unlikely(!__pyx_t_15)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -55956,7 +56451,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -55969,14 +56464,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_1);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -55984,7 +56479,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_GOTREF(__pyx_t_1);
                   index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L110_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L111_unpacking_done;
@@ -55992,7 +56487,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L111_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -56002,7 +56497,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1785
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1806
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als4 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -56011,31 +56506,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_15 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_15);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als4));
                 __pyx_v_als4 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1786
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1807
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als4 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als4)))             # <<<<<<<<<<<<<<
  *             else:
  *                 reason_for_failure = "Unable to extract basic phrase"
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_INCREF(((PyObject *)__pyx_v_als4));
                 PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_als4));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als4));
-                __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-                __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr));
@@ -56049,7 +56544,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_1);
                 __pyx_t_2 = 0;
                 __pyx_t_1 = 0;
-                __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -56071,7 +56566,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1788
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1809
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als4)))
  *             else:
  *                 reason_for_failure = "Unable to extract basic phrase"             # <<<<<<<<<<<<<<
@@ -56087,7 +56582,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L33:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1790
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1811
  *                 reason_for_failure = "Unable to extract basic phrase"
  * 
  *         free(sent_links)             # <<<<<<<<<<<<<<
@@ -56096,7 +56591,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_sent_links);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1791
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1812
  * 
  *         free(sent_links)
  *         free(f_links_low)             # <<<<<<<<<<<<<<
@@ -56105,7 +56600,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_links_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1792
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1813
  *         free(sent_links)
  *         free(f_links_low)
  *         free(f_links_high)             # <<<<<<<<<<<<<<
@@ -56114,7 +56609,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_links_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1793
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1814
  *         free(f_links_low)
  *         free(f_links_high)
  *         free(e_links_low)             # <<<<<<<<<<<<<<
@@ -56123,7 +56618,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_links_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1815
  *         free(f_links_high)
  *         free(e_links_low)
  *         free(e_links_high)             # <<<<<<<<<<<<<<
@@ -56132,7 +56627,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_links_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1795
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1816
  *         free(e_links_low)
  *         free(e_links_high)
  *         free(f_gap_low)             # <<<<<<<<<<<<<<
@@ -56141,7 +56636,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_gap_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1796
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1817
  *         free(e_links_high)
  *         free(f_gap_low)
  *         free(f_gap_high)             # <<<<<<<<<<<<<<
@@ -56150,7 +56645,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_gap_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1797
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1818
  *         free(f_gap_low)
  *         free(f_gap_high)
  *         free(e_gap_low)             # <<<<<<<<<<<<<<
@@ -56159,7 +56654,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_gap_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1798
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1819
  *         free(f_gap_high)
  *         free(e_gap_low)
  *         free(e_gap_high)             # <<<<<<<<<<<<<<
@@ -56168,12 +56663,12 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_gap_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1800
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1821
  *         free(e_gap_high)
  * 
  *         return extracts             # <<<<<<<<<<<<<<
  * 
- *     def add_instance(self, f_words, e_words, alignment):
+ *     # Aggregate stats from a training instance:
  */
   __Pyx_XDECREF(__pyx_r);
   __Pyx_INCREF(__pyx_v_extracts);
@@ -56240,16 +56735,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_26add_instance(PyObject
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_words)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1826; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__alignment)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1826; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "add_instance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "add_instance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1826; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
       goto __pyx_L5_argtuple_error;
@@ -56264,7 +56759,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_26add_instance(PyObject
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1826; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
   __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.add_instance", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __Pyx_RefNannyFinishContext();
@@ -56275,130 +56770,6402 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_26add_instance(PyObject
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1802
- *         return extracts
- * 
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_12add_instance_1extract = {__Pyx_NAMESTR("extract"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_f_i = 0;
+  PyObject *__pyx_v_f_j = 0;
+  PyObject *__pyx_v_e_i = 0;
+  PyObject *__pyx_v_e_j = 0;
+  PyObject *__pyx_v_wc = 0;
+  PyObject *__pyx_v_links = 0;
+  PyObject *__pyx_v_nt = 0;
+  PyObject *__pyx_v_nt_open = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("extract (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__f_i,&__pyx_n_s__f_j,&__pyx_n_s__e_i,&__pyx_n_s__e_j,&__pyx_n_s__wc,&__pyx_n_s__links,&__pyx_n_s__nt,&__pyx_n_s__nt_open,0};
+    PyObject* values[8] = {0,0,0,0,0,0,0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  8: values[7] = PyTuple_GET_ITEM(__pyx_args, 7);
+        case  7: values[6] = PyTuple_GET_ITEM(__pyx_args, 6);
+        case  6: values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+        case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+        case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_i)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_j)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  2:
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_i)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  3:
+        if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_j)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  4:
+        if (likely((values[4] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__wc)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  5:
+        if (likely((values[5] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__links)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  6:
+        if (likely((values[6] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__nt)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  7:
+        if (likely((values[7] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__nt_open)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, 7); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "extract") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 8) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+      values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+      values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+      values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+      values[6] = PyTuple_GET_ITEM(__pyx_args, 6);
+      values[7] = PyTuple_GET_ITEM(__pyx_args, 7);
+    }
+    __pyx_v_f_i = values[0];
+    __pyx_v_f_j = values[1];
+    __pyx_v_e_i = values[2];
+    __pyx_v_e_j = values[3];
+    __pyx_v_wc = values[4];
+    __pyx_v_links = values[5];
+    __pyx_v_nt = values[6];
+    __pyx_v_nt_open = values[7];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("extract", 1, 8, 8, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.add_instance.extract", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(__pyx_self, __pyx_v_f_i, __pyx_v_f_j, __pyx_v_e_i, __pyx_v_e_j, __pyx_v_wc, __pyx_v_links, __pyx_v_nt, __pyx_v_nt_open);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1851
+ *         # Extract all possible hierarchical phrases starting at a source index
+ *         # f_ i and j are current, e_ i and j are previous
+ *         def extract(f_i, f_j, e_i, e_j, wc, links, nt, nt_open):             # <<<<<<<<<<<<<<
+ *             # Phrase extraction limits
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+ */
+
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(PyObject *__pyx_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_f_j, PyObject *__pyx_v_e_i, PyObject *__pyx_v_e_j, PyObject *__pyx_v_wc, PyObject *__pyx_v_links, PyObject *__pyx_v_nt, PyObject *__pyx_v_nt_open) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *__pyx_cur_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *__pyx_outer_scope;
+  PyObject *__pyx_v_link_i = NULL;
+  PyObject *__pyx_v_link_j = NULL;
+  PyObject *__pyx_v_new_e_i = NULL;
+  PyObject *__pyx_v_new_e_j = NULL;
+  PyObject *__pyx_v_old_last_nt = NULL;
+  PyObject *__pyx_v_rule = NULL;
+  int __pyx_v_collision;
+  PyObject *__pyx_v_link = NULL;
+  PyObject *__pyx_v_plus_links = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  Py_ssize_t __pyx_t_1;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  PyObject *__pyx_t_4 = NULL;
+  int __pyx_t_5;
+  int __pyx_t_6;
+  int __pyx_t_7;
+  int __pyx_t_8;
+  PyObject *__pyx_t_9 = NULL;
+  Py_ssize_t __pyx_t_10;
+  PyObject *(*__pyx_t_11)(PyObject *);
+  int __pyx_t_12;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("extract", 0);
+  __pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *) __Pyx_CyFunction_GetClosure(__pyx_self);
+  __pyx_cur_scope = __pyx_outer_scope;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1853
+ *         def extract(f_i, f_j, e_i, e_j, wc, links, nt, nt_open):
+ *             # Phrase extraction limits
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \             # <<<<<<<<<<<<<<
+ *                     (f_j - f_i) + 1 > self.max_initial_size:
+ *                 return
+ */
+  __pyx_t_1 = PyObject_Length(__pyx_v_nt); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyInt_FromSsize_t(__pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_3 = PyNumber_Add(__pyx_v_wc, __pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  if (unlikely(!__pyx_cur_scope->__pyx_v_self)) { __Pyx_RaiseClosureNameError("self"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_length); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_4 = PyObject_RichCompare(__pyx_t_3, __pyx_t_2, Py_GT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  if (!__pyx_t_5) {
+    __pyx_t_4 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_f_len)) { __Pyx_RaiseClosureNameError("f_len"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_2 = PyObject_RichCompare(__pyx_t_4, __pyx_cur_scope->__pyx_v_f_len, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    if (!__pyx_t_6) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1854
+ *             # Phrase extraction limits
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+ *                     (f_j - f_i) + 1 > self.max_initial_size:             # <<<<<<<<<<<<<<
+ *                 return
+ *             # Unaligned word
+ */
+      __pyx_t_2 = PyNumber_Subtract(__pyx_v_f_j, __pyx_v_f_i); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1854; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_4 = PyNumber_Add(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1854; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1854; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = PyObject_RichCompare(__pyx_t_4, __pyx_t_2, Py_GT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1854; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1854; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_8 = __pyx_t_7;
+    } else {
+      __pyx_t_8 = __pyx_t_6;
+    }
+    __pyx_t_6 = __pyx_t_8;
+  } else {
+    __pyx_t_6 = __pyx_t_5;
+  }
+  if (__pyx_t_6) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1855
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+ *                     (f_j - f_i) + 1 > self.max_initial_size:
+ *                 return             # <<<<<<<<<<<<<<
+ *             # Unaligned word
+ *             if not al[f_j]:
+ */
+    __Pyx_XDECREF(__pyx_r);
+    __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+    goto __pyx_L0;
+    goto __pyx_L3;
+  }
+  __pyx_L3:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1857
+ *                 return
+ *             # Unaligned word
+ *             if not al[f_j]:             # <<<<<<<<<<<<<<
+ *                 # Open non-terminal: extend
+ *                 if nt_open:
+ */
+  if (unlikely(!__pyx_cur_scope->__pyx_v_al)) { __Pyx_RaiseClosureNameError("al"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_5 = (!__pyx_t_6);
+  if (__pyx_t_5) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1859
+ *             if not al[f_j]:
+ *                 # Open non-terminal: extend
+ *                 if nt_open:             # <<<<<<<<<<<<<<
+ *                     nt[-1][2] += 1
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc, links, nt, True)
+ */
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_v_nt_open); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1859; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1860
+ *                 # Open non-terminal: extend
+ *                 if nt_open:
+ *                     nt[-1][2] += 1             # <<<<<<<<<<<<<<
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc, links, nt, True)
+ *                     nt[-1][2] -= 1
+ */
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_1 = 2;
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, __pyx_t_1, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_4 = PyNumber_InPlaceAdd(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      if (__Pyx_SetItemInt(__pyx_t_3, __pyx_t_1, __pyx_t_4, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
+ *                 if nt_open:
+ *                     nt[-1][2] += 1
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc, links, nt, True)             # <<<<<<<<<<<<<<
+ *                     nt[-1][2] -= 1
+ *                 # No open non-terminal: extend with word
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_3 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_4 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_2 = PyTuple_New(8); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_f_i);
+      __Pyx_GIVEREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_v_e_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_v_e_i);
+      __Pyx_GIVEREF(__pyx_v_e_i);
+      __Pyx_INCREF(__pyx_v_e_j);
+      PyTuple_SET_ITEM(__pyx_t_2, 3, __pyx_v_e_j);
+      __Pyx_GIVEREF(__pyx_v_e_j);
+      __Pyx_INCREF(__pyx_v_wc);
+      PyTuple_SET_ITEM(__pyx_t_2, 4, __pyx_v_wc);
+      __Pyx_GIVEREF(__pyx_v_wc);
+      __Pyx_INCREF(__pyx_v_links);
+      PyTuple_SET_ITEM(__pyx_t_2, 5, __pyx_v_links);
+      __Pyx_GIVEREF(__pyx_v_links);
+      __Pyx_INCREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_2, 6, __pyx_v_nt);
+      __Pyx_GIVEREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_2, 7, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __pyx_t_3 = 0;
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1862
+ *                     nt[-1][2] += 1
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc, links, nt, True)
+ *                     nt[-1][2] -= 1             # <<<<<<<<<<<<<<
+ *                 # No open non-terminal: extend with word
+ *                 else:
+ */
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_1 = 2;
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_4, __pyx_t_1, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = PyNumber_InPlaceSubtract(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      if (__Pyx_SetItemInt(__pyx_t_4, __pyx_t_1, __pyx_t_3, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      goto __pyx_L5;
+    }
+    /*else*/ {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1865
+ *                 # No open non-terminal: extend with word
+ *                 else:
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc + 1, links, nt, False)             # <<<<<<<<<<<<<<
+ *                 return
+ *             # Aligned word
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_3 = PyNumber_Add(__pyx_v_wc, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_2 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_9 = PyTuple_New(8); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_f_i);
+      __Pyx_GIVEREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_v_e_i);
+      PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_e_i);
+      __Pyx_GIVEREF(__pyx_v_e_i);
+      __Pyx_INCREF(__pyx_v_e_j);
+      PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_v_e_j);
+      __Pyx_GIVEREF(__pyx_v_e_j);
+      PyTuple_SET_ITEM(__pyx_t_9, 4, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_v_links);
+      PyTuple_SET_ITEM(__pyx_t_9, 5, __pyx_v_links);
+      __Pyx_GIVEREF(__pyx_v_links);
+      __Pyx_INCREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_9, 6, __pyx_v_nt);
+      __Pyx_GIVEREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_9, 7, __pyx_t_2);
+      __Pyx_GIVEREF(__pyx_t_2);
+      __pyx_t_4 = 0;
+      __pyx_t_3 = 0;
+      __pyx_t_2 = 0;
+      __pyx_t_2 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    }
+    __pyx_L5:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1866
+ *                 else:
+ *                     extract(f_i, f_j + 1, e_i, e_j, wc + 1, links, nt, False)
+ *                 return             # <<<<<<<<<<<<<<
+ *             # Aligned word
+ *             link_i = al_span[f_j][0]
+ */
+    __Pyx_XDECREF(__pyx_r);
+    __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+    goto __pyx_L0;
+    goto __pyx_L4;
+  }
+  __pyx_L4:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1868
+ *                 return
+ *             # Aligned word
+ *             link_i = al_span[f_j][0]             # <<<<<<<<<<<<<<
+ *             link_j = al_span[f_j][1]
+ *             new_e_i = min(link_i, e_i)
+ */
+  if (unlikely(!__pyx_cur_scope->__pyx_v_al_span)) { __Pyx_RaiseClosureNameError("al_span"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1868; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f_j); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_2, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1868; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_9);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __pyx_v_link_i = __pyx_t_9;
+  __pyx_t_9 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1869
+ *             # Aligned word
+ *             link_i = al_span[f_j][0]
+ *             link_j = al_span[f_j][1]             # <<<<<<<<<<<<<<
+ *             new_e_i = min(link_i, e_i)
+ *             new_e_j = max(link_j, e_j)
+ */
+  __pyx_t_9 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f_j); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_9);
+  __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1869; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+  __pyx_v_link_j = __pyx_t_2;
+  __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1870
+ *             link_i = al_span[f_j][0]
+ *             link_j = al_span[f_j][1]
+ *             new_e_i = min(link_i, e_i)             # <<<<<<<<<<<<<<
+ *             new_e_j = max(link_j, e_j)
+ *             # Open non-terminal: close, extract, extend
+ */
+  __Pyx_INCREF(__pyx_v_e_i);
+  __pyx_t_2 = __pyx_v_e_i;
+  __Pyx_INCREF(__pyx_v_link_i);
+  __pyx_t_9 = __pyx_v_link_i;
+  __pyx_t_4 = PyObject_RichCompare(__pyx_t_2, __pyx_t_9, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1870; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  if (__pyx_t_5) {
+    __Pyx_INCREF(__pyx_t_2);
+    __pyx_t_3 = __pyx_t_2;
+  } else {
+    __Pyx_INCREF(__pyx_t_9);
+    __pyx_t_3 = __pyx_t_9;
+  }
+  __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_INCREF(__pyx_t_3);
+  __pyx_v_new_e_i = __pyx_t_3;
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1871
+ *             link_j = al_span[f_j][1]
+ *             new_e_i = min(link_i, e_i)
+ *             new_e_j = max(link_j, e_j)             # <<<<<<<<<<<<<<
+ *             # Open non-terminal: close, extract, extend
+ *             if nt_open:
+ */
+  __Pyx_INCREF(__pyx_v_e_j);
+  __pyx_t_3 = __pyx_v_e_j;
+  __Pyx_INCREF(__pyx_v_link_j);
+  __pyx_t_2 = __pyx_v_link_j;
+  __pyx_t_4 = PyObject_RichCompare(__pyx_t_3, __pyx_t_2, Py_GT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  if (__pyx_t_5) {
+    __Pyx_INCREF(__pyx_t_3);
+    __pyx_t_9 = __pyx_t_3;
+  } else {
+    __Pyx_INCREF(__pyx_t_2);
+    __pyx_t_9 = __pyx_t_2;
+  }
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_INCREF(__pyx_t_9);
+  __pyx_v_new_e_j = __pyx_t_9;
+  __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1873
+ *             new_e_j = max(link_j, e_j)
+ *             # Open non-terminal: close, extract, extend
+ *             if nt_open:             # <<<<<<<<<<<<<<
+ *                 # Close non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]
+ */
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_v_nt_open); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1873; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__pyx_t_5) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1875
+ *             if nt_open:
+ *                 # Close non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]             # <<<<<<<<<<<<<<
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:
+ */
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1875; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_3 = __Pyx_PySequence_GetSlice(__pyx_t_9, 0, PY_SSIZE_T_MAX); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1875; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_v_old_last_nt = __pyx_t_3;
+    __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1876
+ *                 # Close non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]
+ *                 nt[-1][2] = f_j             # <<<<<<<<<<<<<<
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1876; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    if (__Pyx_SetItemInt(__pyx_t_3, 2, __pyx_v_f_j, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1876; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1877
+ *                 old_last_nt = nt[-1][:]
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:             # <<<<<<<<<<<<<<
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyObject_RichCompare(__pyx_v_link_i, __pyx_t_9, Py_LT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1877; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1878
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):             # <<<<<<<<<<<<<<
+ *                         nt[-1] = old_last_nt
+ *                         return
+ */
+      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_check); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyNumber_Subtract(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_t_9);
+      __Pyx_GIVEREF(__pyx_t_9);
+      __pyx_t_9 = 0;
+      __pyx_t_9 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1878; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_6 = (!__pyx_t_5);
+      if (__pyx_t_6) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1879
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ */
+        if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1880
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt
+ *                         return             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i
+ */
+        __Pyx_XDECREF(__pyx_r);
+        __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+        goto __pyx_L0;
+        goto __pyx_L8;
+      }
+      __pyx_L8:;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1881
+ *                         nt[-1] = old_last_nt
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)             # <<<<<<<<<<<<<<
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:
+ */
+      __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_2, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyNumber_Subtract(__pyx_t_3, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_2);
+      __Pyx_GIVEREF(__pyx_t_2);
+      __pyx_t_2 = 0;
+      __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1882
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i             # <<<<<<<<<<<<<<
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ */
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      if (__Pyx_SetItemInt(__pyx_t_2, 3, __pyx_v_link_i, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      goto __pyx_L7;
+    }
+    __pyx_L7:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1883
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:             # <<<<<<<<<<<<<<
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt
+ */
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_2, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_RichCompare(__pyx_v_link_j, __pyx_t_3, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    if (__pyx_t_6) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1884
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):             # <<<<<<<<<<<<<<
+ *                         nt[-1] = old_last_nt
+ *                         return
+ */
+      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_check); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyNumber_Add(__pyx_t_9, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_3 = 0;
+      __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_5 = (!__pyx_t_6);
+      if (__pyx_t_5) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1885
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ */
+        if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1885; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1886
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt
+ *                         return             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                     nt[-1][4] = link_j
+ */
+        __Pyx_XDECREF(__pyx_r);
+        __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+        goto __pyx_L0;
+        goto __pyx_L10;
+      }
+      __pyx_L10:;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1887
+ *                         nt[-1] = old_last_nt
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)             # <<<<<<<<<<<<<<
+ *                     nt[-1][4] = link_j
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ */
+      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyNumber_Add(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_9);
+      __Pyx_GIVEREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_9 = 0;
+      __pyx_t_9 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1887; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1888
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                     nt[-1][4] = link_j             # <<<<<<<<<<<<<<
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)
+ */
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (__Pyx_SetItemInt(__pyx_t_9, 4, __pyx_v_link_j, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      goto __pyx_L9;
+    }
+    __pyx_L9:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1889
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                     nt[-1][4] = link_j
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):             # <<<<<<<<<<<<<<
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ */
+    __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__form_rules); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_f_words)) { __Pyx_RaiseClosureNameError("f_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_v_f_i); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_t_2); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_f_words, __pyx_t_1, __pyx_t_10); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_e_words)) { __Pyx_RaiseClosureNameError("e_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_new_e_i); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyNumber_Add(__pyx_v_new_e_j, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_t_3); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_e_words, __pyx_t_10, __pyx_t_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_4 = PyTuple_New(6); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_t_2);
+    __Pyx_GIVEREF(__pyx_t_2);
+    PyTuple_SET_ITEM(__pyx_t_4, 3, __pyx_t_3);
+    __Pyx_GIVEREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_4, 4, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_4, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __pyx_t_2 = 0;
+    __pyx_t_3 = 0;
+    __pyx_t_3 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+    if (PyList_CheckExact(__pyx_t_3) || PyTuple_CheckExact(__pyx_t_3)) {
+      __pyx_t_4 = __pyx_t_3; __Pyx_INCREF(__pyx_t_4); __pyx_t_1 = 0;
+      __pyx_t_11 = NULL;
+    } else {
+      __pyx_t_1 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_11 = Py_TYPE(__pyx_t_4)->tp_iternext;
+    }
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    for (;;) {
+      if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_3 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_1); __Pyx_INCREF(__pyx_t_3); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_3 = PySequence_ITEM(__pyx_t_4, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_1); __Pyx_INCREF(__pyx_t_3); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_3 = PySequence_ITEM(__pyx_t_4, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_3 = __pyx_t_11(__pyx_t_4);
+        if (unlikely(!__pyx_t_3)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_3);
+      }
+      __Pyx_XDECREF(__pyx_v_rule);
+      __pyx_v_rule = __pyx_t_3;
+      __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1890
+ *                     nt[-1][4] = link_j
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)             # <<<<<<<<<<<<<<
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_rules)) { __Pyx_RaiseClosureNameError("rules"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1890; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_rules, __pyx_n_s__add); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_v_rule);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_rule);
+      __Pyx_GIVEREF(__pyx_v_rule);
+      __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1891
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)             # <<<<<<<<<<<<<<
+ *                 nt[-1] = old_last_nt
+ *                 if link_i < nt[-1][3]:
+ */
+    if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1891; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_4 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_2 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_9 = PyTuple_New(8); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_4);
+    __Pyx_GIVEREF(__pyx_t_4);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    __Pyx_INCREF(__pyx_v_new_e_j);
+    PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_v_new_e_j);
+    __Pyx_GIVEREF(__pyx_v_new_e_j);
+    __Pyx_INCREF(__pyx_v_wc);
+    PyTuple_SET_ITEM(__pyx_t_9, 4, __pyx_v_wc);
+    __Pyx_GIVEREF(__pyx_v_wc);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_9, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_9, 6, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_9, 7, __pyx_t_2);
+    __Pyx_GIVEREF(__pyx_t_2);
+    __pyx_t_4 = 0;
+    __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1891; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1892
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                 if link_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ */
+    if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1892; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1893
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt
+ *                 if link_i < nt[-1][3]:             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:
+ */
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_2, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_RichCompare(__pyx_v_link_i, __pyx_t_9, Py_LT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1893; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1894
+ *                 nt[-1] = old_last_nt
+ *                 if link_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)             # <<<<<<<<<<<<<<
+ *                 if link_j > nt[-1][4]:
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ */
+      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_9, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyNumber_Subtract(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_t_9);
+      __Pyx_GIVEREF(__pyx_t_9);
+      __pyx_t_9 = 0;
+      __pyx_t_9 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      goto __pyx_L13;
+    }
+    __pyx_L13:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1895
+ *                 if link_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                 return
+ */
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_9, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_9 = PyObject_RichCompare(__pyx_v_link_j, __pyx_t_4, Py_GT); __Pyx_XGOTREF(__pyx_t_9); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1896
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)             # <<<<<<<<<<<<<<
+ *                 return
+ *             # No open non-terminal
+ */
+      __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_4, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyNumber_Add(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      goto __pyx_L14;
+    }
+    __pyx_L14:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1897
+ *                 if link_j > nt[-1][4]:
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                 return             # <<<<<<<<<<<<<<
+ *             # No open non-terminal
+ *             # Extract, extend with word
+ */
+    __Pyx_XDECREF(__pyx_r);
+    __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+    goto __pyx_L0;
+    goto __pyx_L6;
+  }
+  __pyx_L6:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1900
+ *             # No open non-terminal
+ *             # Extract, extend with word
+ *             collision = False             # <<<<<<<<<<<<<<
+ *             for link in al[f_j]:
+ *                 if cover[link]:
+ */
+  __pyx_v_collision = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1901
+ *             # Extract, extend with word
+ *             collision = False
+ *             for link in al[f_j]:             # <<<<<<<<<<<<<<
+ *                 if cover[link]:
+ *                     collision = True
+ */
+  __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
+  if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
+    __pyx_t_2 = __pyx_t_4; __Pyx_INCREF(__pyx_t_2); __pyx_t_1 = 0;
+    __pyx_t_11 = NULL;
+  } else {
+    __pyx_t_1 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_11 = Py_TYPE(__pyx_t_2)->tp_iternext;
+  }
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  for (;;) {
+    if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_11(__pyx_t_2);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    __Pyx_XDECREF(__pyx_v_link);
+    __pyx_v_link = __pyx_t_4;
+    __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1902
+ *             collision = False
+ *             for link in al[f_j]:
+ *                 if cover[link]:             # <<<<<<<<<<<<<<
+ *                     collision = True
+ *             # Collisions block extraction and extension, but may be okay for
+ */
+    if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1902; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1903
+ *             for link in al[f_j]:
+ *                 if cover[link]:
+ *                     collision = True             # <<<<<<<<<<<<<<
+ *             # Collisions block extraction and extension, but may be okay for
+ *             # continuing non-terminals
+ */
+      __pyx_v_collision = 1;
+      goto __pyx_L17;
+    }
+    __pyx_L17:;
+  }
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1906
+ *             # Collisions block extraction and extension, but may be okay for
+ *             # continuing non-terminals
+ *             if not collision:             # <<<<<<<<<<<<<<
+ *                 plus_links = []
+ *                 for link in al[f_j]:
+ */
+  __pyx_t_5 = (!__pyx_v_collision);
+  if (__pyx_t_5) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1907
+ *             # continuing non-terminals
+ *             if not collision:
+ *                 plus_links = []             # <<<<<<<<<<<<<<
+ *                 for link in al[f_j]:
+ *                     plus_links.append((f_j, link))
+ */
+    __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_v_plus_links = __pyx_t_2;
+    __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1908
+ *             if not collision:
+ *                 plus_links = []
+ *                 for link in al[f_j]:             # <<<<<<<<<<<<<<
+ *                     plus_links.append((f_j, link))
+ *                     cover[link] = ~cover[link]
+ */
+    __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    if (PyList_CheckExact(__pyx_t_2) || PyTuple_CheckExact(__pyx_t_2)) {
+      __pyx_t_4 = __pyx_t_2; __Pyx_INCREF(__pyx_t_4); __pyx_t_1 = 0;
+      __pyx_t_11 = NULL;
+    } else {
+      __pyx_t_1 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_11 = Py_TYPE(__pyx_t_4)->tp_iternext;
+    }
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    for (;;) {
+      if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_2 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_2 = PySequence_ITEM(__pyx_t_4, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_2 = PySequence_ITEM(__pyx_t_4, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_2 = __pyx_t_11(__pyx_t_4);
+        if (unlikely(!__pyx_t_2)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_2);
+      }
+      __Pyx_XDECREF(__pyx_v_link);
+      __pyx_v_link = __pyx_t_2;
+      __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1909
+ *                 plus_links = []
+ *                 for link in al[f_j]:
+ *                     plus_links.append((f_j, link))             # <<<<<<<<<<<<<<
+ *                     cover[link] = ~cover[link]
+ *                 links.append(plus_links)
+ */
+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_v_f_j);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_f_j);
+      __Pyx_GIVEREF(__pyx_v_f_j);
+      __Pyx_INCREF(__pyx_v_link);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_link);
+      __Pyx_GIVEREF(__pyx_v_link);
+      __pyx_t_12 = PyList_Append(__pyx_v_plus_links, ((PyObject *)__pyx_t_2)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1910
+ *                 for link in al[f_j]:
+ *                     plus_links.append((f_j, link))
+ *                     cover[link] = ~cover[link]             # <<<<<<<<<<<<<<
+ *                 links.append(plus_links)
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_v_link); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_9 = PyNumber_Invert(__pyx_t_2); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_v_link, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1911
+ *                     plus_links.append((f_j, link))
+ *                     cover[link] = ~cover[link]
+ *                 links.append(plus_links)             # <<<<<<<<<<<<<<
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)
+ */
+    __pyx_t_4 = __Pyx_PyObject_Append(__pyx_v_links, ((PyObject *)__pyx_v_plus_links)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1912
+ *                     cover[link] = ~cover[link]
+ *                 links.append(plus_links)
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):             # <<<<<<<<<<<<<<
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)
+ */
+    __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__form_rules); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_f_words)) { __Pyx_RaiseClosureNameError("f_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_v_f_i); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_9 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_9 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_f_words, __pyx_t_1, __pyx_t_10); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_e_words)) { __Pyx_RaiseClosureNameError("e_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_new_e_i); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyNumber_Add(__pyx_v_new_e_j, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_t_2); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_e_words, __pyx_t_10, __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_3 = PyTuple_New(6); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_9);
+    __Pyx_GIVEREF(__pyx_t_9);
+    PyTuple_SET_ITEM(__pyx_t_3, 3, __pyx_t_2);
+    __Pyx_GIVEREF(__pyx_t_2);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_3, 4, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_3, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __pyx_t_9 = 0;
+    __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+    if (PyList_CheckExact(__pyx_t_2) || PyTuple_CheckExact(__pyx_t_2)) {
+      __pyx_t_3 = __pyx_t_2; __Pyx_INCREF(__pyx_t_3); __pyx_t_1 = 0;
+      __pyx_t_11 = NULL;
+    } else {
+      __pyx_t_1 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_11 = Py_TYPE(__pyx_t_3)->tp_iternext;
+    }
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    for (;;) {
+      if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_3)) {
+        if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_3)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_3)) {
+        if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_2 = __pyx_t_11(__pyx_t_3);
+        if (unlikely(!__pyx_t_2)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_2);
+      }
+      __Pyx_XDECREF(__pyx_v_rule);
+      __pyx_v_rule = __pyx_t_2;
+      __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1913
+ *                 links.append(plus_links)
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)             # <<<<<<<<<<<<<<
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)
+ *                 links.pop()
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_rules)) { __Pyx_RaiseClosureNameError("rules"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_rules, __pyx_n_s__add); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_v_rule);
+      PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_rule);
+      __Pyx_GIVEREF(__pyx_v_rule);
+      __pyx_t_9 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1914
+ *                 for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)             # <<<<<<<<<<<<<<
+ *                 links.pop()
+ *                 for link in al[f_j]:
+ */
+    if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_3 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = PyNumber_Add(__pyx_v_wc, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_4 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_2 = PyTuple_New(8); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_t_3);
+    __Pyx_GIVEREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    __Pyx_INCREF(__pyx_v_new_e_j);
+    PyTuple_SET_ITEM(__pyx_t_2, 3, __pyx_v_new_e_j);
+    __Pyx_GIVEREF(__pyx_v_new_e_j);
+    PyTuple_SET_ITEM(__pyx_t_2, 4, __pyx_t_9);
+    __Pyx_GIVEREF(__pyx_t_9);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_2, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_2, 6, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_2, 7, __pyx_t_4);
+    __Pyx_GIVEREF(__pyx_t_4);
+    __pyx_t_3 = 0;
+    __pyx_t_9 = 0;
+    __pyx_t_4 = 0;
+    __pyx_t_4 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1915
+ *                     rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)
+ *                 links.pop()             # <<<<<<<<<<<<<<
+ *                 for link in al[f_j]:
+ *                     cover[link] = ~cover[link]
+ */
+    __pyx_t_4 = __Pyx_PyObject_Pop(__pyx_v_links); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1916
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)
+ *                 links.pop()
+ *                 for link in al[f_j]:             # <<<<<<<<<<<<<<
+ *                     cover[link] = ~cover[link]
+ *             # Try to add a word to a (closed) non-terminal, extract, extend
+ */
+    __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
+      __pyx_t_2 = __pyx_t_4; __Pyx_INCREF(__pyx_t_2); __pyx_t_1 = 0;
+      __pyx_t_11 = NULL;
+    } else {
+      __pyx_t_1 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_11 = Py_TYPE(__pyx_t_2)->tp_iternext;
+    }
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    for (;;) {
+      if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
+        if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_2)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
+        if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_4 = __pyx_t_11(__pyx_t_2);
+        if (unlikely(!__pyx_t_4)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_4);
+      }
+      __Pyx_XDECREF(__pyx_v_link);
+      __pyx_v_link = __pyx_t_4;
+      __pyx_t_4 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1917
+ *                 links.pop()
+ *                 for link in al[f_j]:
+ *                     cover[link] = ~cover[link]             # <<<<<<<<<<<<<<
+ *             # Try to add a word to a (closed) non-terminal, extract, extend
+ *             if nt and nt[-1][2] == f_j - 1:
+ */
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1917; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1917; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_9 = PyNumber_Invert(__pyx_t_4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1917; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_v_link, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1917; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    goto __pyx_L18;
+  }
+  __pyx_L18:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1919
+ *                     cover[link] = ~cover[link]
+ *             # Try to add a word to a (closed) non-terminal, extract, extend
+ *             if nt and nt[-1][2] == f_j - 1:             # <<<<<<<<<<<<<<
+ *                 # Add to non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]
+ */
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__pyx_t_5) {
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_2, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyNumber_Subtract(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_4 = PyObject_RichCompare(__pyx_t_9, __pyx_t_2, Py_EQ); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1919; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_8 = __pyx_t_6;
+  } else {
+    __pyx_t_8 = __pyx_t_5;
+  }
+  if (__pyx_t_8) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1921
+ *             if nt and nt[-1][2] == f_j - 1:
+ *                 # Add to non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]             # <<<<<<<<<<<<<<
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:
+ */
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_2 = __Pyx_PySequence_GetSlice(__pyx_t_4, 0, PY_SSIZE_T_MAX); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_v_old_last_nt = __pyx_t_2;
+    __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1922
+ *                 # Add to non-terminal, checking for collisions
+ *                 old_last_nt = nt[-1][:]
+ *                 nt[-1][2] = f_j             # <<<<<<<<<<<<<<
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ */
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    if (__Pyx_SetItemInt(__pyx_t_2, 2, __pyx_v_f_j, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1922; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1923
+ *                 old_last_nt = nt[-1][:]
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:             # <<<<<<<<<<<<<<
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt
+ */
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_2, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_RichCompare(__pyx_v_link_i, __pyx_t_4, Py_LT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    if (__pyx_t_8) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1924
+ *                 nt[-1][2] = f_j
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):             # <<<<<<<<<<<<<<
+ *                         nt[-1] = old_last_nt
+ *                         return
+ */
+      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_check); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_4, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyNumber_Subtract(__pyx_t_9, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1924; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_5 = (!__pyx_t_8);
+      if (__pyx_t_5) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1925
+ *                 if link_i < nt[-1][3]:
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ */
+        if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1926
+ *                     if not span_check(cover, link_i, nt[-1][3] - 1):
+ *                         nt[-1] = old_last_nt
+ *                         return             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i
+ */
+        __Pyx_XDECREF(__pyx_r);
+        __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+        goto __pyx_L0;
+        goto __pyx_L27;
+      }
+      __pyx_L27:;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1927
+ *                         nt[-1] = old_last_nt
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)             # <<<<<<<<<<<<<<
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:
+ */
+      __pyx_t_4 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyNumber_Subtract(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_t_9);
+      __Pyx_GIVEREF(__pyx_t_9);
+      __pyx_t_9 = 0;
+      __pyx_t_9 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1928
+ *                         return
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i             # <<<<<<<<<<<<<<
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ */
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (__Pyx_SetItemInt(__pyx_t_9, 3, __pyx_v_link_i, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      goto __pyx_L26;
+    }
+    __pyx_L26:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1929
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:             # <<<<<<<<<<<<<<
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt
+ */
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_9, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_9 = PyObject_RichCompare(__pyx_v_link_j, __pyx_t_2, Py_GT); __Pyx_XGOTREF(__pyx_t_9); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    if (__pyx_t_5) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1930
+ *                     nt[-1][3] = link_i
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):             # <<<<<<<<<<<<<<
+ *                         nt[-1] = old_last_nt
+ *                         return
+ */
+      __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_check); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_2, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyNumber_Add(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_t_2);
+      __Pyx_GIVEREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_2 = 0;
+      __pyx_t_2 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1930; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_8 = (!__pyx_t_5);
+      if (__pyx_t_8) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1931
+ *                 if link_j > nt[-1][4]:
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ */
+        if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1932
+ *                     if not span_check(cover, nt[-1][4] + 1, link_j):
+ *                         nt[-1] = old_last_nt
+ *                         return             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                     nt[-1][4] = link_j
+ */
+        __Pyx_XDECREF(__pyx_r);
+        __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+        goto __pyx_L0;
+        goto __pyx_L29;
+      }
+      __pyx_L29:;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1933
+ *                         nt[-1] = old_last_nt
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)             # <<<<<<<<<<<<<<
+ *                     nt[-1][4] = link_j
+ *                 # Require at least one word in phrase
+ */
+      __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_4, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyNumber_Add(__pyx_t_9, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1934
+ *                         return
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *                     nt[-1][4] = link_j             # <<<<<<<<<<<<<<
+ *                 # Require at least one word in phrase
+ *                 if links:
+ */
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1934; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      if (__Pyx_SetItemInt(__pyx_t_4, 4, __pyx_v_link_j, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1934; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      goto __pyx_L28;
+    }
+    __pyx_L28:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1936
+ *                     nt[-1][4] = link_j
+ *                 # Require at least one word in phrase
+ *                 if links:             # <<<<<<<<<<<<<<
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)
+ */
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_v_links); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1936; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__pyx_t_8) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1937
+ *                 # Require at least one word in phrase
+ *                 if links:
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):             # <<<<<<<<<<<<<<
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ */
+      __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__form_rules); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_f_words)) { __Pyx_RaiseClosureNameError("f_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_v_f_i); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_9 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_t_9); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_f_words, __pyx_t_1, __pyx_t_10); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_e_words)) { __Pyx_RaiseClosureNameError("e_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_new_e_i); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_Add(__pyx_v_new_e_j, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_t_2); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_e_words, __pyx_t_10, __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = PyTuple_New(6); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_f_i);
+      __Pyx_GIVEREF(__pyx_v_f_i);
+      __Pyx_INCREF(__pyx_v_new_e_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_new_e_i);
+      __Pyx_GIVEREF(__pyx_v_new_e_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_9);
+      __Pyx_GIVEREF(__pyx_t_9);
+      PyTuple_SET_ITEM(__pyx_t_3, 3, __pyx_t_2);
+      __Pyx_GIVEREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_3, 4, __pyx_v_nt);
+      __Pyx_GIVEREF(__pyx_v_nt);
+      __Pyx_INCREF(__pyx_v_links);
+      PyTuple_SET_ITEM(__pyx_t_3, 5, __pyx_v_links);
+      __Pyx_GIVEREF(__pyx_v_links);
+      __pyx_t_9 = 0;
+      __pyx_t_2 = 0;
+      __pyx_t_2 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+      if (PyList_CheckExact(__pyx_t_2) || PyTuple_CheckExact(__pyx_t_2)) {
+        __pyx_t_3 = __pyx_t_2; __Pyx_INCREF(__pyx_t_3); __pyx_t_1 = 0;
+        __pyx_t_11 = NULL;
+      } else {
+        __pyx_t_1 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_3);
+        __pyx_t_11 = Py_TYPE(__pyx_t_3)->tp_iternext;
+      }
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      for (;;) {
+        if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_3)) {
+          if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_3)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
+          __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #else
+          __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #endif
+        } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_3)) {
+          if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
+          __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_1); __Pyx_INCREF(__pyx_t_2); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #else
+          __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #endif
+        } else {
+          __pyx_t_2 = __pyx_t_11(__pyx_t_3);
+          if (unlikely(!__pyx_t_2)) {
+            if (PyErr_Occurred()) {
+              if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1937; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            }
+            break;
+          }
+          __Pyx_GOTREF(__pyx_t_2);
+        }
+        __Pyx_XDECREF(__pyx_v_rule);
+        __pyx_v_rule = __pyx_t_2;
+        __pyx_t_2 = 0;
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1938
+ *                 if links:
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)             # <<<<<<<<<<<<<<
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt
+ */
+        if (unlikely(!__pyx_cur_scope->__pyx_v_rules)) { __Pyx_RaiseClosureNameError("rules"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1938; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+        __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_rules, __pyx_n_s__add); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1938; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_2);
+        __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1938; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_4);
+        __Pyx_INCREF(__pyx_v_rule);
+        PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_rule);
+        __Pyx_GIVEREF(__pyx_v_rule);
+        __pyx_t_9 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1938; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_9);
+        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+        __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+        __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      }
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      goto __pyx_L30;
+    }
+    __pyx_L30:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1939
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)             # <<<<<<<<<<<<<<
+ *                 nt[-1] = old_last_nt
+ *                 if new_e_i < nt[-1][3]:
+ */
+    if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1939; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_3 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1939; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1939; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_4 = PyTuple_New(8); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1939; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_t_3);
+    __Pyx_GIVEREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_4, 2, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    __Pyx_INCREF(__pyx_v_new_e_j);
+    PyTuple_SET_ITEM(__pyx_t_4, 3, __pyx_v_new_e_j);
+    __Pyx_GIVEREF(__pyx_v_new_e_j);
+    __Pyx_INCREF(__pyx_v_wc);
+    PyTuple_SET_ITEM(__pyx_t_4, 4, __pyx_v_wc);
+    __Pyx_GIVEREF(__pyx_v_wc);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_4, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_4, 6, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_4, 7, __pyx_t_9);
+    __Pyx_GIVEREF(__pyx_t_9);
+    __pyx_t_3 = 0;
+    __pyx_t_9 = 0;
+    __pyx_t_9 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1939; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1940
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt             # <<<<<<<<<<<<<<
+ *                 if new_e_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ */
+    if (__Pyx_SetItemInt(__pyx_v_nt, -1, __pyx_v_old_last_nt, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1941
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt[-1] = old_last_nt
+ *                 if new_e_i < nt[-1][3]:             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:
+ */
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1941; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_9, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1941; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_9 = PyObject_RichCompare(__pyx_v_new_e_i, __pyx_t_4, Py_LT); __Pyx_XGOTREF(__pyx_t_9); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1941; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1941; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    if (__pyx_t_8) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1942
+ *                 nt[-1] = old_last_nt
+ *                 if new_e_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)             # <<<<<<<<<<<<<<
+ *                 if link_j > nt[-1][4]:
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ */
+      __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_4, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = PyNumber_Subtract(__pyx_t_3, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      __Pyx_INCREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_link_i);
+      __Pyx_GIVEREF(__pyx_v_link_i);
+      PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      goto __pyx_L33;
+    }
+    __pyx_L33:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1943
+ *                 if new_e_i < nt[-1][3]:
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:             # <<<<<<<<<<<<<<
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *             # Try to start a new non-terminal, extract, extend
+ */
+    __pyx_t_4 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_4, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_4 = PyObject_RichCompare(__pyx_v_link_j, __pyx_t_3, Py_GT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1943; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    if (__pyx_t_8) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1944
+ *                     span_flip(cover, link_i, nt[-1][3] - 1)
+ *                 if link_j > nt[-1][4]:
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)             # <<<<<<<<<<<<<<
+ *             # Try to start a new non-terminal, extract, extend
+ *             if (not nt or f_j - nt[-1][2] > 1) and len(nt) < self.max_nonterminals:
+ */
+      __pyx_t_4 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyNumber_Add(__pyx_t_9, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_cur_scope->__pyx_v_cover);
+      __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+      PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __Pyx_INCREF(__pyx_v_link_j);
+      PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_link_j);
+      __Pyx_GIVEREF(__pyx_v_link_j);
+      __pyx_t_3 = 0;
+      __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      goto __pyx_L34;
+    }
+    __pyx_L34:;
+    goto __pyx_L25;
+  }
+  __pyx_L25:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1946
+ *                     span_flip(cover, nt[-1][4] + 1, link_j)
+ *             # Try to start a new non-terminal, extract, extend
+ *             if (not nt or f_j - nt[-1][2] > 1) and len(nt) < self.max_nonterminals:             # <<<<<<<<<<<<<<
+ *                 # Check for collisions
+ *                 if not span_check(cover, link_i, link_j):
+ */
+  __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = (!__pyx_t_8);
+  if (!__pyx_t_5) {
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyNumber_Subtract(__pyx_v_f_j, __pyx_t_9); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_9 = PyObject_RichCompare(__pyx_t_3, __pyx_int_1, Py_GT); __Pyx_XGOTREF(__pyx_t_9); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_9); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __pyx_t_6 = __pyx_t_8;
+  } else {
+    __pyx_t_6 = __pyx_t_5;
+  }
+  if (__pyx_t_6) {
+    __pyx_t_1 = PyObject_Length(__pyx_v_nt); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1946; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = (__pyx_t_1 < __pyx_cur_scope->__pyx_v_self->max_nonterminals);
+    __pyx_t_8 = __pyx_t_5;
+  } else {
+    __pyx_t_8 = __pyx_t_6;
+  }
+  if (__pyx_t_8) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1948
+ *             if (not nt or f_j - nt[-1][2] > 1) and len(nt) < self.max_nonterminals:
+ *                 # Check for collisions
+ *                 if not span_check(cover, link_i, link_j):             # <<<<<<<<<<<<<<
+ *                     return
+ *                 span_flip(cover, link_i, link_j)
+ */
+    __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_check); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1948; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+    PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_cur_scope->__pyx_v_cover);
+    __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+    __Pyx_INCREF(__pyx_v_link_i);
+    PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_link_i);
+    __Pyx_GIVEREF(__pyx_v_link_i);
+    __Pyx_INCREF(__pyx_v_link_j);
+    PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_v_link_j);
+    __Pyx_GIVEREF(__pyx_v_link_j);
+    __pyx_t_4 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+    __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1948; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __pyx_t_6 = (!__pyx_t_8);
+    if (__pyx_t_6) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1949
+ *                 # Check for collisions
+ *                 if not span_check(cover, link_i, link_j):
+ *                     return             # <<<<<<<<<<<<<<
+ *                 span_flip(cover, link_i, link_j)
+ *                 nt.append([(nt[-1][0] + 1) if nt else 1, f_j, f_j, link_i, link_j])
+ */
+      __Pyx_XDECREF(__pyx_r);
+      __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+      goto __pyx_L0;
+      goto __pyx_L36;
+    }
+    __pyx_L36:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1950
+ *                 if not span_check(cover, link_i, link_j):
+ *                     return
+ *                 span_flip(cover, link_i, link_j)             # <<<<<<<<<<<<<<
+ *                 nt.append([(nt[-1][0] + 1) if nt else 1, f_j, f_j, link_i, link_j])
+ *                 # Require at least one word in phrase
+ */
+    __pyx_t_4 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_3 = PyTuple_New(3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+    PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_cur_scope->__pyx_v_cover);
+    __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+    __Pyx_INCREF(__pyx_v_link_i);
+    PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_v_link_i);
+    __Pyx_GIVEREF(__pyx_v_link_i);
+    __Pyx_INCREF(__pyx_v_link_j);
+    PyTuple_SET_ITEM(__pyx_t_3, 2, __pyx_v_link_j);
+    __Pyx_GIVEREF(__pyx_v_link_j);
+    __pyx_t_9 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1950; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1951
+ *                     return
+ *                 span_flip(cover, link_i, link_j)
+ *                 nt.append([(nt[-1][0] + 1) if nt else 1, f_j, f_j, link_i, link_j])             # <<<<<<<<<<<<<<
+ *                 # Require at least one word in phrase
+ *                 if links:
+ */
+    __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__pyx_t_6) {
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_4 = __Pyx_GetItemInt(__pyx_t_3, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyNumber_Add(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_9 = __pyx_t_3;
+      __pyx_t_3 = 0;
+    } else {
+      __Pyx_INCREF(__pyx_int_1);
+      __pyx_t_9 = __pyx_int_1;
+    }
+    __pyx_t_3 = PyList_New(5); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    PyList_SET_ITEM(__pyx_t_3, 0, __pyx_t_9);
+    __Pyx_GIVEREF(__pyx_t_9);
+    __Pyx_INCREF(__pyx_v_f_j);
+    PyList_SET_ITEM(__pyx_t_3, 1, __pyx_v_f_j);
+    __Pyx_GIVEREF(__pyx_v_f_j);
+    __Pyx_INCREF(__pyx_v_f_j);
+    PyList_SET_ITEM(__pyx_t_3, 2, __pyx_v_f_j);
+    __Pyx_GIVEREF(__pyx_v_f_j);
+    __Pyx_INCREF(__pyx_v_link_i);
+    PyList_SET_ITEM(__pyx_t_3, 3, __pyx_v_link_i);
+    __Pyx_GIVEREF(__pyx_v_link_i);
+    __Pyx_INCREF(__pyx_v_link_j);
+    PyList_SET_ITEM(__pyx_t_3, 4, __pyx_v_link_j);
+    __Pyx_GIVEREF(__pyx_v_link_j);
+    __pyx_t_9 = 0;
+    __pyx_t_9 = __Pyx_PyObject_Append(__pyx_v_nt, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1951; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+    __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1953
+ *                 nt.append([(nt[-1][0] + 1) if nt else 1, f_j, f_j, link_i, link_j])
+ *                 # Require at least one word in phrase
+ *                 if links:             # <<<<<<<<<<<<<<
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)
+ */
+    __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_v_links); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1953; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__pyx_t_6) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1954
+ *                 # Require at least one word in phrase
+ *                 if links:
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):             # <<<<<<<<<<<<<<
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ */
+      __pyx_t_9 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__form_rules); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_9);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_f_words)) { __Pyx_RaiseClosureNameError("f_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_v_f_i); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_t_3); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_f_words, __pyx_t_1, __pyx_t_10); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      if (unlikely(!__pyx_cur_scope->__pyx_v_e_words)) { __Pyx_RaiseClosureNameError("e_words"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_10 = __Pyx_PyIndex_AsSsize_t(__pyx_v_new_e_i); if (unlikely((__pyx_t_10 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyNumber_Add(__pyx_v_new_e_j, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_1 = __Pyx_PyIndex_AsSsize_t(__pyx_t_4); if (unlikely((__pyx_t_1 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_4 = __Pyx_PySequence_GetSlice(__pyx_cur_scope->__pyx_v_e_words, __pyx_t_10, __pyx_t_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_2 = PyTuple_New(6); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_INCREF(__pyx_v_f_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_f_i);
+      __Pyx_GIVEREF(__pyx_v_f_i);
+      __Pyx_INCREF(__pyx_v_new_e_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_v_new_e_i);
+      __Pyx_GIVEREF(__pyx_v_new_e_i);
+      PyTuple_SET_ITEM(__pyx_t_2, 2, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      PyTuple_SET_ITEM(__pyx_t_2, 3, __pyx_t_4);
+      __Pyx_GIVEREF(__pyx_t_4);
+      __Pyx_INCREF(__pyx_v_nt);
+      PyTuple_SET_ITEM(__pyx_t_2, 4, __pyx_v_nt);
+      __Pyx_GIVEREF(__pyx_v_nt);
+      __Pyx_INCREF(__pyx_v_links);
+      PyTuple_SET_ITEM(__pyx_t_2, 5, __pyx_v_links);
+      __Pyx_GIVEREF(__pyx_v_links);
+      __pyx_t_3 = 0;
+      __pyx_t_4 = 0;
+      __pyx_t_4 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
+        __pyx_t_2 = __pyx_t_4; __Pyx_INCREF(__pyx_t_2); __pyx_t_1 = 0;
+        __pyx_t_11 = NULL;
+      } else {
+        __pyx_t_1 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_2);
+        __pyx_t_11 = Py_TYPE(__pyx_t_2)->tp_iternext;
+      }
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      for (;;) {
+        if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
+          if (__pyx_t_1 >= PyList_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
+          __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #else
+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #endif
+        } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
+          if (__pyx_t_1 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+          #if CYTHON_COMPILING_IN_CPYTHON
+          __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_1); __Pyx_INCREF(__pyx_t_4); __pyx_t_1++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #else
+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_1); __pyx_t_1++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          #endif
+        } else {
+          __pyx_t_4 = __pyx_t_11(__pyx_t_2);
+          if (unlikely(!__pyx_t_4)) {
+            if (PyErr_Occurred()) {
+              if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            }
+            break;
+          }
+          __Pyx_GOTREF(__pyx_t_4);
+        }
+        __Pyx_XDECREF(__pyx_v_rule);
+        __pyx_v_rule = __pyx_t_4;
+        __pyx_t_4 = 0;
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1955
+ *                 if links:
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)             # <<<<<<<<<<<<<<
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt.pop()
+ */
+        if (unlikely(!__pyx_cur_scope->__pyx_v_rules)) { __Pyx_RaiseClosureNameError("rules"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1955; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+        __pyx_t_4 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_rules, __pyx_n_s__add); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1955; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_4);
+        __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1955; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_9);
+        __Pyx_INCREF(__pyx_v_rule);
+        PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_rule);
+        __Pyx_GIVEREF(__pyx_v_rule);
+        __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1955; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_3);
+        __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+        __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      }
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      goto __pyx_L37;
+    }
+    __pyx_L37:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1956
+ *                     for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)             # <<<<<<<<<<<<<<
+ *                 nt.pop()
+ *                 span_flip(cover, link_i, link_j)
+ */
+    if (unlikely(!__pyx_cur_scope->__pyx_v_extract)) { __Pyx_RaiseClosureNameError("extract"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    __pyx_t_2 = PyNumber_Add(__pyx_v_f_j, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_3 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = PyTuple_New(8); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_2);
+    __Pyx_GIVEREF(__pyx_t_2);
+    __Pyx_INCREF(__pyx_v_new_e_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_new_e_i);
+    __Pyx_GIVEREF(__pyx_v_new_e_i);
+    __Pyx_INCREF(__pyx_v_new_e_j);
+    PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_v_new_e_j);
+    __Pyx_GIVEREF(__pyx_v_new_e_j);
+    __Pyx_INCREF(__pyx_v_wc);
+    PyTuple_SET_ITEM(__pyx_t_9, 4, __pyx_v_wc);
+    __Pyx_GIVEREF(__pyx_v_wc);
+    __Pyx_INCREF(__pyx_v_links);
+    PyTuple_SET_ITEM(__pyx_t_9, 5, __pyx_v_links);
+    __Pyx_GIVEREF(__pyx_v_links);
+    __Pyx_INCREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_9, 6, __pyx_v_nt);
+    __Pyx_GIVEREF(__pyx_v_nt);
+    PyTuple_SET_ITEM(__pyx_t_9, 7, __pyx_t_3);
+    __Pyx_GIVEREF(__pyx_t_3);
+    __pyx_t_2 = 0;
+    __pyx_t_3 = 0;
+    __pyx_t_3 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1957
+ *                         rules.add(rule)
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt.pop()             # <<<<<<<<<<<<<<
+ *                 span_flip(cover, link_i, link_j)
+ *             # TODO: try adding NT to start, end, both
+ */
+    __pyx_t_3 = __Pyx_PyObject_Pop(__pyx_v_nt); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1958
+ *                 extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+ *                 nt.pop()
+ *                 span_flip(cover, link_i, link_j)             # <<<<<<<<<<<<<<
+ *             # TODO: try adding NT to start, end, both
+ *             # check: one aligned word on boundary that is not part of a NT
+ */
+    __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__span_flip); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_9);
+    __Pyx_INCREF(__pyx_cur_scope->__pyx_v_cover);
+    PyTuple_SET_ITEM(__pyx_t_9, 0, __pyx_cur_scope->__pyx_v_cover);
+    __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_cover);
+    __Pyx_INCREF(__pyx_v_link_i);
+    PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_v_link_i);
+    __Pyx_GIVEREF(__pyx_v_link_i);
+    __Pyx_INCREF(__pyx_v_link_j);
+    PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_v_link_j);
+    __Pyx_GIVEREF(__pyx_v_link_j);
+    __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1958; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    goto __pyx_L35;
+  }
+  __pyx_L35:;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_XDECREF(__pyx_t_9);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.add_instance.extract", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_link_i);
+  __Pyx_XDECREF(__pyx_v_link_j);
+  __Pyx_XDECREF(__pyx_v_new_e_i);
+  __Pyx_XDECREF(__pyx_v_new_e_j);
+  __Pyx_XDECREF(__pyx_v_old_last_nt);
+  __Pyx_XDECREF(__pyx_v_rule);
+  __Pyx_XDECREF(__pyx_v_link);
+  __Pyx_XDECREF(__pyx_v_plus_links);
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1826
+ *     # Extract hierarchical phrase pairs
+ *     # Update bilexical counts
  *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
- *         logger.info("I would add:")
- *         logger.info(decode_words(f_words))
+ * 
+ *         # Bilexical counts
  */
 
-static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(CYTHON_UNUSED struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words, PyObject *__pyx_v_alignment) {
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words, PyObject *__pyx_v_alignment) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *__pyx_cur_scope;
+  PyObject *__pyx_v_e_len = NULL;
+  PyObject *__pyx_v_f = NULL;
+  PyObject *__pyx_v_e = NULL;
+  PyObject *__pyx_v_f_i = NULL;
+  PyObject *__pyx_v_rule = NULL;
+  CYTHON_UNUSED PyObject *__pyx_v_i = NULL;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   PyObject *__pyx_t_1 = NULL;
   PyObject *__pyx_t_2 = NULL;
   PyObject *__pyx_t_3 = NULL;
-  PyObject *__pyx_t_4 = NULL;
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
+  PyObject *__pyx_t_6 = NULL;
+  PyObject *__pyx_t_7 = NULL;
+  PyObject *(*__pyx_t_8)(PyObject *);
+  int __pyx_t_9;
+  int __pyx_t_10;
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("add_instance", 0);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)__pyx_ptype_3_sa___pyx_scope_struct_20_add_instance->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_20_add_instance, __pyx_empty_tuple, NULL);
+  if (unlikely(!__pyx_cur_scope)) {
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __Pyx_GOTREF(__pyx_cur_scope);
+  __pyx_cur_scope->__pyx_v_self = __pyx_v_self;
+  __Pyx_INCREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
+  __Pyx_GIVEREF((PyObject *)__pyx_cur_scope->__pyx_v_self);
+  __pyx_cur_scope->__pyx_v_f_words = __pyx_v_f_words;
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f_words);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_words);
+  __pyx_cur_scope->__pyx_v_e_words = __pyx_v_e_words;
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e_words);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_e_words);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1803
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1829
  * 
- *     def add_instance(self, f_words, e_words, alignment):
- *         logger.info("I would add:")             # <<<<<<<<<<<<<<
- *         logger.info(decode_words(f_words))
- *         logger.info(decode_words(e_words))
+ *         # Bilexical counts
+ *         self.aggr_bilex(f_words, e_words)             # <<<<<<<<<<<<<<
+ * 
+ *         # Rules extracted from this instance
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_n_s__aggr_bilex); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f_words);
+  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_f_words);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_words);
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e_words);
+  PyTuple_SET_ITEM(__pyx_t_2, 1, __pyx_cur_scope->__pyx_v_e_words);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_e_words);
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_135), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1832
+ * 
+ *         # Rules extracted from this instance
+ *         rules = set()             # <<<<<<<<<<<<<<
+ * 
+ *         f_len = len(f_words)
+ */
+  __pyx_t_3 = PySet_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1832; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  __Pyx_GIVEREF(((PyObject *)__pyx_t_3));
+  __pyx_cur_scope->__pyx_v_rules = ((PyObject *)__pyx_t_3);
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1834
+ *         rules = set()
+ * 
+ *         f_len = len(f_words)             # <<<<<<<<<<<<<<
+ *         e_len = len(e_words)
+ * 
+ */
+  __pyx_t_3 = __pyx_cur_scope->__pyx_v_f_words;
+  __Pyx_INCREF(__pyx_t_3);
+  __pyx_t_4 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1834; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_3 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1834; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_GIVEREF(__pyx_t_3);
+  __pyx_cur_scope->__pyx_v_f_len = __pyx_t_3;
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1835
+ * 
+ *         f_len = len(f_words)
+ *         e_len = len(e_words)             # <<<<<<<<<<<<<<
+ * 
+ *         # Pre-compute alignment info
+ */
+  __pyx_t_3 = __pyx_cur_scope->__pyx_v_e_words;
+  __Pyx_INCREF(__pyx_t_3);
+  __pyx_t_4 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_3 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_v_e_len = __pyx_t_3;
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1838
+ * 
+ *         # Pre-compute alignment info
+ *         al = [[] for i in range(f_len)]             # <<<<<<<<<<<<<<
+ *         al_span = [[f_len + 1, -1] for i in range(f_len)]
+ *         for (f, e) in alignment:
+ */
+  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f_len);
+  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_f_len);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_len);
+  __pyx_t_1 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  if (PyList_CheckExact(__pyx_t_1) || PyTuple_CheckExact(__pyx_t_1)) {
+    __pyx_t_2 = __pyx_t_1; __Pyx_INCREF(__pyx_t_2); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_5 = Py_TYPE(__pyx_t_2)->tp_iternext;
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_1 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_1); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_1); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_1 = __pyx_t_5(__pyx_t_2);
+      if (unlikely(!__pyx_t_1)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_1);
+    }
+    __Pyx_XDECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_1;
+    __pyx_t_1 = 0;
+    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    if (unlikely(__Pyx_PyList_Append(__pyx_t_3, (PyObject*)__pyx_t_1))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_INCREF(((PyObject *)__pyx_t_3));
+  __Pyx_GIVEREF(((PyObject *)__pyx_t_3));
+  __pyx_cur_scope->__pyx_v_al = ((PyObject *)__pyx_t_3);
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1839
+ *         # Pre-compute alignment info
+ *         al = [[] for i in range(f_len)]
+ *         al_span = [[f_len + 1, -1] for i in range(f_len)]             # <<<<<<<<<<<<<<
+ *         for (f, e) in alignment:
+ *             al[f].append(e)
+ */
+  __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f_len);
+  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_cur_scope->__pyx_v_f_len);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_len);
+  __pyx_t_1 = PyObject_Call(__pyx_builtin_range, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  if (PyList_CheckExact(__pyx_t_1) || PyTuple_CheckExact(__pyx_t_1)) {
+    __pyx_t_2 = __pyx_t_1; __Pyx_INCREF(__pyx_t_2); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_5 = Py_TYPE(__pyx_t_2)->tp_iternext;
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_1 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_1); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_2)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_4); __Pyx_INCREF(__pyx_t_1); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_1 = PySequence_ITEM(__pyx_t_2, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_1 = __pyx_t_5(__pyx_t_2);
+      if (unlikely(!__pyx_t_1)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_1);
+    }
+    __Pyx_XDECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_1;
+    __pyx_t_1 = 0;
+    __pyx_t_1 = PyNumber_Add(__pyx_cur_scope->__pyx_v_f_len, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_6 = PyList_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    PyList_SET_ITEM(__pyx_t_6, 0, __pyx_t_1);
+    __Pyx_GIVEREF(__pyx_t_1);
+    __Pyx_INCREF(__pyx_int_neg_1);
+    PyList_SET_ITEM(__pyx_t_6, 1, __pyx_int_neg_1);
+    __Pyx_GIVEREF(__pyx_int_neg_1);
+    __pyx_t_1 = 0;
+    if (unlikely(__Pyx_PyList_Append(__pyx_t_3, (PyObject*)__pyx_t_6))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1839; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
+  }
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_INCREF(((PyObject *)__pyx_t_3));
+  __Pyx_GIVEREF(((PyObject *)__pyx_t_3));
+  __pyx_cur_scope->__pyx_v_al_span = ((PyObject *)__pyx_t_3);
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1840
+ *         al = [[] for i in range(f_len)]
+ *         al_span = [[f_len + 1, -1] for i in range(f_len)]
+ *         for (f, e) in alignment:             # <<<<<<<<<<<<<<
+ *             al[f].append(e)
+ *             al_span[f][0] = min(al_span[f][0], e)
+ */
+  if (PyList_CheckExact(__pyx_v_alignment) || PyTuple_CheckExact(__pyx_v_alignment)) {
+    __pyx_t_3 = __pyx_v_alignment; __Pyx_INCREF(__pyx_t_3); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_alignment); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_5 = Py_TYPE(__pyx_t_3)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_3)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_4); __Pyx_INCREF(__pyx_t_2); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_3)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_4); __Pyx_INCREF(__pyx_t_2); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_2 = __pyx_t_5(__pyx_t_3);
+      if (unlikely(!__pyx_t_2)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_2);
+    }
+    if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
+      PyObject* sequence = __pyx_t_2;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 2)) {
+        if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
+      if (likely(PyTuple_CheckExact(sequence))) {
+        __pyx_t_6 = PyTuple_GET_ITEM(sequence, 0); 
+        __pyx_t_1 = PyTuple_GET_ITEM(sequence, 1); 
+      } else {
+        __pyx_t_6 = PyList_GET_ITEM(sequence, 0); 
+        __pyx_t_1 = PyList_GET_ITEM(sequence, 1); 
+      }
+      __Pyx_INCREF(__pyx_t_6);
+      __Pyx_INCREF(__pyx_t_1);
+      #else
+      __pyx_t_6 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    } else
+    {
+      Py_ssize_t index = -1;
+      __pyx_t_7 = PyObject_GetIter(__pyx_t_2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_7);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_8 = Py_TYPE(__pyx_t_7)->tp_iternext;
+      index = 0; __pyx_t_6 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_6)) goto __pyx_L9_unpacking_failed;
+      __Pyx_GOTREF(__pyx_t_6);
+      index = 1; __pyx_t_1 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_1)) goto __pyx_L9_unpacking_failed;
+      __Pyx_GOTREF(__pyx_t_1);
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = NULL;
+      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+      goto __pyx_L10_unpacking_done;
+      __pyx_L9_unpacking_failed:;
+      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+      __pyx_t_8 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1840; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_L10_unpacking_done:;
+    }
+    __Pyx_XDECREF(__pyx_v_f);
+    __pyx_v_f = __pyx_t_6;
+    __pyx_t_6 = 0;
+    __Pyx_XDECREF(__pyx_v_e);
+    __pyx_v_e = __pyx_t_1;
+    __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1841
+ *         al_span = [[f_len + 1, -1] for i in range(f_len)]
+ *         for (f, e) in alignment:
+ *             al[f].append(e)             # <<<<<<<<<<<<<<
+ *             al_span[f][0] = min(al_span[f][0], e)
+ *             al_span[f][1] = max(al_span[f][1], e)
+ */
+    __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_1 = __Pyx_PyObject_Append(__pyx_t_2, __pyx_v_e); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1842
+ *         for (f, e) in alignment:
+ *             al[f].append(e)
+ *             al_span[f][0] = min(al_span[f][0], e)             # <<<<<<<<<<<<<<
+ *             al_span[f][1] = max(al_span[f][1], e)
+ * 
+ */
+    __Pyx_INCREF(__pyx_v_e);
+    __pyx_t_1 = __pyx_v_e;
+    __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_2, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_7 = PyObject_RichCompare(__pyx_t_1, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_9 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_9 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+    if (__pyx_t_9) {
+      __Pyx_INCREF(__pyx_t_1);
+      __pyx_t_2 = __pyx_t_1;
+    } else {
+      __Pyx_INCREF(__pyx_t_6);
+      __pyx_t_2 = __pyx_t_6;
+    }
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __pyx_t_1 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    if (__Pyx_SetItemInt(__pyx_t_1, 0, __pyx_t_2, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1842; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1843
+ *             al[f].append(e)
+ *             al_span[f][0] = min(al_span[f][0], e)
+ *             al_span[f][1] = max(al_span[f][1], e)             # <<<<<<<<<<<<<<
+ * 
+ *         # Target side word coverage
+ */
+    __Pyx_INCREF(__pyx_v_e);
+    __pyx_t_2 = __pyx_v_e;
+    __pyx_t_1 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_t_1, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __pyx_t_7 = PyObject_RichCompare(__pyx_t_2, __pyx_t_6, Py_GT); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_9 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_9 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+    if (__pyx_t_9) {
+      __Pyx_INCREF(__pyx_t_2);
+      __pyx_t_1 = __pyx_t_2;
+    } else {
+      __Pyx_INCREF(__pyx_t_6);
+      __pyx_t_1 = __pyx_t_6;
+    }
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al_span, __pyx_v_f); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    if (__Pyx_SetItemInt(__pyx_t_2, 1, __pyx_t_1, sizeof(long), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1847
+ *         # Target side word coverage
+ *         # TODO: Does Cython do bit vectors?
+ *         cover = [0] * e_len             # <<<<<<<<<<<<<<
+ * 
+ *         # Extract all possible hierarchical phrases starting at a source index
+ */
+  __pyx_t_3 = PyList_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_INCREF(__pyx_int_0);
+  PyList_SET_ITEM(__pyx_t_3, 0, __pyx_int_0);
+  __Pyx_GIVEREF(__pyx_int_0);
+  { PyObject* __pyx_temp = PyNumber_InPlaceMultiply(__pyx_t_3, __pyx_v_e_len); if (unlikely(!__pyx_temp)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_temp);
+    __Pyx_DECREF(__pyx_t_3);
+    __pyx_t_3 = __pyx_temp;
+  }
+  __Pyx_GIVEREF(((PyObject *)__pyx_t_3));
+  __pyx_cur_scope->__pyx_v_cover = ((PyObject *)__pyx_t_3);
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1851
+ *         # Extract all possible hierarchical phrases starting at a source index
+ *         # f_ i and j are current, e_ i and j are previous
+ *         def extract(f_i, f_j, e_i, e_j, wc, links, nt, nt_open):             # <<<<<<<<<<<<<<
+ *             # Phrase extraction limits
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+ */
+  __pyx_t_3 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_12add_instance_1extract, 0, ((PyObject*)__pyx_cur_scope), __pyx_n_s___sa, ((PyObject *)__pyx_k_codeobj_135)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_GIVEREF(__pyx_t_3);
+  __pyx_cur_scope->__pyx_v_extract = __pyx_t_3;
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1963
+ * 
+ *         # Try to extract phrases from every f index
+ *         f_i = 0             # <<<<<<<<<<<<<<
+ *         while f_i < f_len:
+ *             # Skip if phrases won't be tight on left side
+ */
+  __Pyx_INCREF(__pyx_int_0);
+  __pyx_v_f_i = __pyx_int_0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1964
+ *         # Try to extract phrases from every f index
+ *         f_i = 0
+ *         while f_i < f_len:             # <<<<<<<<<<<<<<
+ *             # Skip if phrases won't be tight on left side
+ *             if not al[f_i]:
+ */
+  while (1) {
+    __pyx_t_3 = PyObject_RichCompare(__pyx_v_f_i, __pyx_cur_scope->__pyx_v_f_len, Py_LT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1964; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_9 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_9 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1964; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    if (!__pyx_t_9) break;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1966
+ *         while f_i < f_len:
+ *             # Skip if phrases won't be tight on left side
+ *             if not al[f_i]:             # <<<<<<<<<<<<<<
+ *                 f_i += 1
+ *                 continue
+ */
+    __pyx_t_3 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1966; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_9 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1966; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_10 = (!__pyx_t_9);
+    if (__pyx_t_10) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1967
+ *             # Skip if phrases won't be tight on left side
+ *             if not al[f_i]:
+ *                 f_i += 1             # <<<<<<<<<<<<<<
+ *                 continue
+ *             extract(f_i, f_i, f_len + 1, -1, 1, [], [], False)
+ */
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_f_i, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1967; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_v_f_i);
+      __pyx_v_f_i = __pyx_t_3;
+      __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1968
+ *             if not al[f_i]:
+ *                 f_i += 1
+ *                 continue             # <<<<<<<<<<<<<<
+ *             extract(f_i, f_i, f_len + 1, -1, 1, [], [], False)
+ *             f_i += 1
+ */
+      goto __pyx_L11_continue;
+      goto __pyx_L13;
+    }
+    __pyx_L13:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1969
+ *                 f_i += 1
+ *                 continue
+ *             extract(f_i, f_i, f_len + 1, -1, 1, [], [], False)             # <<<<<<<<<<<<<<
+ *             f_i += 1
+ * 
+ */
+    __pyx_t_3 = PyNumber_Add(__pyx_cur_scope->__pyx_v_f_len, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_6 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_7 = PyTuple_New(8); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_7);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_7, 0, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    __Pyx_INCREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_7, 1, __pyx_v_f_i);
+    __Pyx_GIVEREF(__pyx_v_f_i);
+    PyTuple_SET_ITEM(__pyx_t_7, 2, __pyx_t_3);
+    __Pyx_GIVEREF(__pyx_t_3);
+    __Pyx_INCREF(__pyx_int_neg_1);
+    PyTuple_SET_ITEM(__pyx_t_7, 3, __pyx_int_neg_1);
+    __Pyx_GIVEREF(__pyx_int_neg_1);
+    __Pyx_INCREF(__pyx_int_1);
+    PyTuple_SET_ITEM(__pyx_t_7, 4, __pyx_int_1);
+    __Pyx_GIVEREF(__pyx_int_1);
+    PyTuple_SET_ITEM(__pyx_t_7, 5, ((PyObject *)__pyx_t_1));
+    __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
+    PyTuple_SET_ITEM(__pyx_t_7, 6, ((PyObject *)__pyx_t_2));
+    __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
+    PyTuple_SET_ITEM(__pyx_t_7, 7, __pyx_t_6);
+    __Pyx_GIVEREF(__pyx_t_6);
+    __pyx_t_3 = 0;
+    __pyx_t_1 = 0;
+    __pyx_t_2 = 0;
+    __pyx_t_6 = 0;
+    __pyx_t_6 = PyObject_Call(__pyx_cur_scope->__pyx_v_extract, ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1969; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1970
+ *                 continue
+ *             extract(f_i, f_i, f_len + 1, -1, 1, [], [], False)
+ *             f_i += 1             # <<<<<<<<<<<<<<
+ * 
+ *         for rule in sorted(rules):
+ */
+    __pyx_t_6 = PyNumber_InPlaceAdd(__pyx_v_f_i, __pyx_int_1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_v_f_i);
+    __pyx_v_f_i = __pyx_t_6;
+    __pyx_t_6 = 0;
+    __pyx_L11_continue:;
+  }
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1972
+ *             f_i += 1
+ * 
+ *         for rule in sorted(rules):             # <<<<<<<<<<<<<<
+ *             logger.info(rule)
+ * 
+ */
+  __pyx_t_6 = PyTuple_New(1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_6);
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_rules);
+  PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_cur_scope->__pyx_v_rules);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_rules);
+  __pyx_t_7 = PyObject_Call(__pyx_builtin_sorted, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_7);
+  __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
+  if (PyList_CheckExact(__pyx_t_7) || PyTuple_CheckExact(__pyx_t_7)) {
+    __pyx_t_6 = __pyx_t_7; __Pyx_INCREF(__pyx_t_6); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_5 = Py_TYPE(__pyx_t_6)->tp_iternext;
+  }
+  __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_6)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_6)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_7 = PyList_GET_ITEM(__pyx_t_6, __pyx_t_4); __Pyx_INCREF(__pyx_t_7); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_7 = PySequence_ITEM(__pyx_t_6, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_6)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_6)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_6, __pyx_t_4); __Pyx_INCREF(__pyx_t_7); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_7 = PySequence_ITEM(__pyx_t_6, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_7 = __pyx_t_5(__pyx_t_6);
+      if (unlikely(!__pyx_t_7)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_7);
+    }
+    __Pyx_XDECREF(__pyx_v_rule);
+    __pyx_v_rule = __pyx_t_7;
+    __pyx_t_7 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1973
+ * 
+ *         for rule in sorted(rules):
+ *             logger.info(rule)             # <<<<<<<<<<<<<<
+ * 
+ *     # Aggregate bilexical counts
+ */
+    __pyx_t_7 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_7);
+    __pyx_t_2 = PyObject_GetAttr(__pyx_t_7, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+    __pyx_t_7 = PyTuple_New(1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_7);
+    __Pyx_INCREF(__pyx_v_rule);
+    PyTuple_SET_ITEM(__pyx_t_7, 0, __pyx_v_rule);
+    __Pyx_GIVEREF(__pyx_v_rule);
+    __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1973; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_7)); __pyx_t_7 = 0;
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_6);
+  __Pyx_XDECREF(__pyx_t_7);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.add_instance", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_e_len);
+  __Pyx_XDECREF(__pyx_v_f);
+  __Pyx_XDECREF(__pyx_v_e);
+  __Pyx_XDECREF(__pyx_v_f_i);
+  __Pyx_XDECREF(__pyx_v_rule);
+  __Pyx_XDECREF(__pyx_v_i);
+  __Pyx_DECREF(((PyObject *)__pyx_cur_scope));
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_28aggr_bilex(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_28aggr_bilex(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_f_words = 0;
+  PyObject *__pyx_v_e_words = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("aggr_bilex (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__f_words,&__pyx_n_s__e_words,0};
+    PyObject* values[2] = {0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_words)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_words)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("aggr_bilex", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1976; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "aggr_bilex") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1976; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+    }
+    __pyx_v_f_words = values[0];
+    __pyx_v_e_words = values[1];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("aggr_bilex", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1976; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.aggr_bilex", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory_27aggr_bilex(((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)__pyx_v_self), __pyx_v_f_words, __pyx_v_e_words);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1976
+ * 
+ *     # Aggregate bilexical counts
+ *     def aggr_bilex(self, f_words, e_words):             # <<<<<<<<<<<<<<
+ * 
+ *         for e_w in e_words:
+ */
+
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_27aggr_bilex(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words) {
+  PyObject *__pyx_v_e_w = NULL;
+  PyObject *__pyx_v_f_w = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  PyObject *__pyx_t_4 = NULL;
+  PyObject *__pyx_t_5 = NULL;
+  PyObject *__pyx_t_6 = NULL;
+  PyObject *__pyx_t_7 = NULL;
+  Py_ssize_t __pyx_t_8;
+  PyObject *(*__pyx_t_9)(PyObject *);
+  PyObject *__pyx_t_10 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("aggr_bilex", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1978
+ *     def aggr_bilex(self, f_words, e_words):
+ * 
+ *         for e_w in e_words:             # <<<<<<<<<<<<<<
+ *             self.bilex_e[e_w] += 1
+ * 
+ */
+  if (PyList_CheckExact(__pyx_v_e_words) || PyTuple_CheckExact(__pyx_v_e_words)) {
+    __pyx_t_1 = __pyx_v_e_words; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
+    __pyx_t_3 = NULL;
+  } else {
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_e_words); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_3(__pyx_t_1);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1978; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    __Pyx_XDECREF(__pyx_v_e_w);
+    __pyx_v_e_w = __pyx_t_4;
+    __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1979
+ * 
+ *         for e_w in e_words:
+ *             self.bilex_e[e_w] += 1             # <<<<<<<<<<<<<<
+ * 
+ *         for f_w in f_words:
+ */
+    __Pyx_INCREF(__pyx_v_self->bilex_e);
+    __pyx_t_4 = __pyx_v_self->bilex_e;
+    __Pyx_INCREF(__pyx_v_e_w);
+    __pyx_t_5 = __pyx_v_e_w;
+    __pyx_t_6 = PyObject_GetItem(__pyx_t_4, __pyx_t_5); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_7 = PyNumber_InPlaceAdd(__pyx_t_6, __pyx_int_1); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_7);
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    if (PyObject_SetItem(__pyx_t_4, __pyx_t_5, __pyx_t_7) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1979; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+    __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1804
- *     def add_instance(self, f_words, e_words, alignment):
- *         logger.info("I would add:")
- *         logger.info(decode_words(f_words))             # <<<<<<<<<<<<<<
- *         logger.info(decode_words(e_words))
- *         logger.info(alignment)
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1981
+ *             self.bilex_e[e_w] += 1
+ * 
+ *         for f_w in f_words:             # <<<<<<<<<<<<<<
+ *             self.bilex_f[f_w] += 1
+ *             for e_w in e_words:
+ */
+  if (PyList_CheckExact(__pyx_v_f_words) || PyTuple_CheckExact(__pyx_v_f_words)) {
+    __pyx_t_1 = __pyx_v_f_words; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
+    __pyx_t_3 = NULL;
+  } else {
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_f_words); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_3(__pyx_t_1);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1981; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    __Pyx_XDECREF(__pyx_v_f_w);
+    __pyx_v_f_w = __pyx_t_4;
+    __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1982
+ * 
+ *         for f_w in f_words:
+ *             self.bilex_f[f_w] += 1             # <<<<<<<<<<<<<<
+ *             for e_w in e_words:
+ *                 self.bilex_fe[f_w][e_w] += 1
+ */
+    __Pyx_INCREF(__pyx_v_self->bilex_f);
+    __pyx_t_4 = __pyx_v_self->bilex_f;
+    __Pyx_INCREF(__pyx_v_f_w);
+    __pyx_t_5 = __pyx_v_f_w;
+    __pyx_t_7 = PyObject_GetItem(__pyx_t_4, __pyx_t_5); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1982; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_7);
+    __pyx_t_6 = PyNumber_InPlaceAdd(__pyx_t_7, __pyx_int_1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1982; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+    if (PyObject_SetItem(__pyx_t_4, __pyx_t_5, __pyx_t_6) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1982; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1983
+ *         for f_w in f_words:
+ *             self.bilex_f[f_w] += 1
+ *             for e_w in e_words:             # <<<<<<<<<<<<<<
+ *                 self.bilex_fe[f_w][e_w] += 1
+ * 
+ */
+    if (PyList_CheckExact(__pyx_v_e_words) || PyTuple_CheckExact(__pyx_v_e_words)) {
+      __pyx_t_4 = __pyx_v_e_words; __Pyx_INCREF(__pyx_t_4); __pyx_t_8 = 0;
+      __pyx_t_9 = NULL;
+    } else {
+      __pyx_t_8 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_v_e_words); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_4);
+      __pyx_t_9 = Py_TYPE(__pyx_t_4)->tp_iternext;
+    }
+    for (;;) {
+      if (!__pyx_t_9 && PyList_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_8 >= PyList_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_5 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_8); __Pyx_INCREF(__pyx_t_5); __pyx_t_8++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_5 = PySequence_ITEM(__pyx_t_4, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_9 && PyTuple_CheckExact(__pyx_t_4)) {
+        if (__pyx_t_8 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_5 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_8); __Pyx_INCREF(__pyx_t_5); __pyx_t_8++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_5 = PySequence_ITEM(__pyx_t_4, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_5 = __pyx_t_9(__pyx_t_4);
+        if (unlikely(!__pyx_t_5)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_5);
+      }
+      __Pyx_XDECREF(__pyx_v_e_w);
+      __pyx_v_e_w = __pyx_t_5;
+      __pyx_t_5 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1984
+ *             self.bilex_f[f_w] += 1
+ *             for e_w in e_words:
+ *                 self.bilex_fe[f_w][e_w] += 1             # <<<<<<<<<<<<<<
+ * 
+ *     # Create a rule from source, target, non-terminals, and alignments
+ */
+      __pyx_t_5 = PyObject_GetItem(__pyx_v_self->bilex_fe, __pyx_v_f_w); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_5);
+      __Pyx_INCREF(__pyx_v_e_w);
+      __pyx_t_6 = __pyx_v_e_w;
+      __pyx_t_7 = PyObject_GetItem(__pyx_t_5, __pyx_t_6); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_7);
+      __pyx_t_10 = PyNumber_InPlaceAdd(__pyx_t_7, __pyx_int_1); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_10);
+      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+      if (PyObject_SetItem(__pyx_t_5, __pyx_t_6, __pyx_t_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
+      __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+      __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_XDECREF(__pyx_t_5);
+  __Pyx_XDECREF(__pyx_t_6);
+  __Pyx_XDECREF(__pyx_t_7);
+  __Pyx_XDECREF(__pyx_t_10);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.aggr_bilex", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_e_w);
+  __Pyx_XDECREF(__pyx_v_f_w);
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_30form_rules(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_30form_rules(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_f_i = 0;
+  PyObject *__pyx_v_e_i = 0;
+  PyObject *__pyx_v_f_span = 0;
+  PyObject *__pyx_v_e_span = 0;
+  PyObject *__pyx_v_nt = 0;
+  PyObject *__pyx_v_al = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("form_rules (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__f_i,&__pyx_n_s__e_i,&__pyx_n_s__f_span,&__pyx_n_s__e_span,&__pyx_n_s__nt,&__pyx_n_s__al,0};
+    PyObject* values[6] = {0,0,0,0,0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  6: values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+        case  5: values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+        case  4: values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_i)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_i)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  2:
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_span)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  3:
+        if (likely((values[3] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_span)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  4:
+        if (likely((values[4] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__nt)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  5:
+        if (likely((values[5] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__al)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "form_rules") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 6) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+      values[3] = PyTuple_GET_ITEM(__pyx_args, 3);
+      values[4] = PyTuple_GET_ITEM(__pyx_args, 4);
+      values[5] = PyTuple_GET_ITEM(__pyx_args, 5);
+    }
+    __pyx_v_f_i = values[0];
+    __pyx_v_e_i = values[1];
+    __pyx_v_f_span = values[2];
+    __pyx_v_e_span = values[3];
+    __pyx_v_nt = values[4];
+    __pyx_v_al = values[5];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("form_rules", 1, 6, 6, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1987; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.form_rules", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory_29form_rules(((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)__pyx_v_self), __pyx_v_f_i, __pyx_v_e_i, __pyx_v_f_span, __pyx_v_e_span, __pyx_v_nt, __pyx_v_al);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_10form_rules_lambda6(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_23HieroCachingRuleFactory_10form_rules_lambda6 = {__Pyx_NAMESTR("lambda6"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_10form_rules_lambda6, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_10form_rules_lambda6(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_x = 0;
+  PyObject *__pyx_v_y = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("lambda6 (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__x,&__pyx_n_s__y,0};
+    PyObject* values[2] = {0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__x)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__y)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("lambda6", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "lambda6") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 2) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+    }
+    __pyx_v_x = values[0];
+    __pyx_v_y = values[1];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("lambda6", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.form_rules.lambda6", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_lambda_funcdef_lambda6(__pyx_self, __pyx_v_x, __pyx_v_y);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1993
+ *         rules = []
+ * 
+ *         nt_inv = sorted(nt, cmp=lambda x, y: cmp(x[3], y[3]))             # <<<<<<<<<<<<<<
+ * 
+ *         logger.info(nt)
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+static PyObject *__pyx_lambda_funcdef_lambda6(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("lambda6", 0);
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_x, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_y, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__decode_words); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyTuple_New(2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_t_2);
+  __Pyx_GIVEREF(__pyx_t_2);
+  __pyx_t_1 = 0;
+  __pyx_t_2 = 0;
+  __pyx_t_2 = PyObject_Call(__pyx_builtin_cmp, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+  __pyx_r = __pyx_t_2;
+  __pyx_t_2 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.form_rules.lambda6", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1987
+ * 
+ *     # Create a rule from source, target, non-terminals, and alignments
+ *     def form_rules(self, f_i, e_i, f_span, e_span, nt, al):             # <<<<<<<<<<<<<<
+ * 
+ *         # This could be more efficient but is unlikely to be the bottleneck
+ */
+
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_29form_rules(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_e_i, PyObject *__pyx_v_f_span, PyObject *__pyx_v_e_span, PyObject *__pyx_v_nt, PyObject *__pyx_v_al) {
+  PyObject *__pyx_v_rules = NULL;
+  PyObject *__pyx_v_nt_inv = NULL;
+  PyObject *__pyx_v_f_sym = NULL;
+  PyObject *__pyx_v_off = NULL;
+  PyObject *__pyx_v_next_nt = NULL;
+  PyObject *__pyx_v_nt_len = NULL;
+  PyObject *__pyx_v_i = NULL;
+  PyObject *__pyx_v_e_sym = NULL;
+  PyObject *__pyx_v_links = NULL;
+  PyObject *__pyx_v_links_len = NULL;
+  PyObject *__pyx_v_nt_i = NULL;
+  PyObject *__pyx_v_last_index = NULL;
+  PyObject *__pyx_v_f_len = NULL;
+  PyObject *__pyx_v_e_len = NULL;
+  PyObject *__pyx_v_link = NULL;
+  PyObject *__pyx_v_sub = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
+  PyObject *__pyx_t_6 = NULL;
+  int __pyx_t_7;
+  Py_ssize_t __pyx_t_8;
+  int __pyx_t_9;
+  int __pyx_t_10;
+  PyObject *(*__pyx_t_11)(PyObject *);
+  PyObject *__pyx_t_12 = NULL;
+  int __pyx_t_13;
+  int __pyx_t_14;
+  long __pyx_t_15;
+  long __pyx_t_16;
+  int __pyx_t_17;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("form_rules", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1991
+ *         # This could be more efficient but is unlikely to be the bottleneck
+ * 
+ *         rules = []             # <<<<<<<<<<<<<<
+ * 
+ *         nt_inv = sorted(nt, cmp=lambda x, y: cmp(x[3], y[3]))
+ */
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1991; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_v_rules = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1993
+ *         rules = []
+ * 
+ *         nt_inv = sorted(nt, cmp=lambda x, y: cmp(x[3], y[3]))             # <<<<<<<<<<<<<<
+ * 
+ *         logger.info(nt)
+ */
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_INCREF(__pyx_v_nt);
+  PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_v_nt);
+  __Pyx_GIVEREF(__pyx_v_nt);
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_2));
+  __pyx_t_3 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_10form_rules_lambda6, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  __Pyx_INCREF(__pyx_v_f_words);
-  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_f_words);
-  __Pyx_GIVEREF(__pyx_v_f_words);
-  __pyx_t_4 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_4);
+  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__cmp), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_3 = PyObject_Call(__pyx_builtin_sorted, ((PyObject *)__pyx_t_1), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1993; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  __pyx_v_nt_inv = __pyx_t_3;
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1995
+ *         nt_inv = sorted(nt, cmp=lambda x, y: cmp(x[3], y[3]))
+ * 
+ *         logger.info(nt)             # <<<<<<<<<<<<<<
+ * 
+ *         f_sym = list(f_span[:])
+ */
+  __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1995; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_2 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1995; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1995; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_INCREF(__pyx_v_nt);
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_nt);
+  __Pyx_GIVEREF(__pyx_v_nt);
+  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1995; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1997
+ *         logger.info(nt)
+ * 
+ *         f_sym = list(f_span[:])             # <<<<<<<<<<<<<<
+ *         off = f_i
+ *         for next_nt in nt:
+ */
+  __pyx_t_1 = __Pyx_PySequence_GetSlice(__pyx_v_f_span, 0, PY_SSIZE_T_MAX); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1997; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1997; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  __pyx_t_1 = 0;
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyList_Type))), ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1997; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_v_f_sym = ((PyObject*)__pyx_t_1);
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1998
+ * 
+ *         f_sym = list(f_span[:])
+ *         off = f_i             # <<<<<<<<<<<<<<
+ *         for next_nt in nt:
+ *             nt_len = (next_nt[2] - next_nt[1]) + 1
+ */
+  __Pyx_INCREF(__pyx_v_f_i);
+  __pyx_v_off = __pyx_v_f_i;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1999
+ *         f_sym = list(f_span[:])
+ *         off = f_i
+ *         for next_nt in nt:             # <<<<<<<<<<<<<<
+ *             nt_len = (next_nt[2] - next_nt[1]) + 1
+ *             i = 0
+ */
+  if (PyList_CheckExact(__pyx_v_nt) || PyTuple_CheckExact(__pyx_v_nt)) {
+    __pyx_t_1 = __pyx_v_nt; __Pyx_INCREF(__pyx_t_1); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_nt); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_5 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_3 = __pyx_t_5(__pyx_t_1);
+      if (unlikely(!__pyx_t_3)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1999; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_3);
+    }
+    __Pyx_XDECREF(__pyx_v_next_nt);
+    __pyx_v_next_nt = __pyx_t_3;
+    __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2000
+ *         off = f_i
+ *         for next_nt in nt:
+ *             nt_len = (next_nt[2] - next_nt[1]) + 1             # <<<<<<<<<<<<<<
+ *             i = 0
+ *             while i < nt_len:
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_next_nt, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_next_nt, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_6 = PyNumber_Subtract(__pyx_t_3, __pyx_t_2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyNumber_Add(__pyx_t_6, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __Pyx_XDECREF(__pyx_v_nt_len);
+    __pyx_v_nt_len = __pyx_t_2;
+    __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2001
+ *         for next_nt in nt:
+ *             nt_len = (next_nt[2] - next_nt[1]) + 1
+ *             i = 0             # <<<<<<<<<<<<<<
+ *             while i < nt_len:
+ *                 f_sym.pop(next_nt[1] - off)
+ */
+    __Pyx_INCREF(__pyx_int_0);
+    __Pyx_XDECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_int_0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2002
+ *             nt_len = (next_nt[2] - next_nt[1]) + 1
+ *             i = 0
+ *             while i < nt_len:             # <<<<<<<<<<<<<<
+ *                 f_sym.pop(next_nt[1] - off)
+ *                 i += 1
+ */
+    while (1) {
+      __pyx_t_2 = PyObject_RichCompare(__pyx_v_i, __pyx_v_nt_len, Py_LT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2002; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      if (!__pyx_t_7) break;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2003
+ *             i = 0
+ *             while i < nt_len:
+ *                 f_sym.pop(next_nt[1] - off)             # <<<<<<<<<<<<<<
+ *                 i += 1
+ *             f_sym.insert(next_nt[1] - off, sym_setindex(self.category, next_nt[0]))
+ */
+      __pyx_t_2 = PyObject_GetAttr(((PyObject *)__pyx_v_f_sym), __pyx_n_s__pop); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2003; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_6 = __Pyx_GetItemInt(__pyx_v_next_nt, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2003; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_6);
+      __pyx_t_3 = PyNumber_Subtract(__pyx_t_6, __pyx_v_off); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2003; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+      __pyx_t_6 = PyTuple_New(1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2003; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_6);
+      PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __pyx_t_3 = 0;
+      __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2003; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2004
+ *             while i < nt_len:
+ *                 f_sym.pop(next_nt[1] - off)
+ *                 i += 1             # <<<<<<<<<<<<<<
+ *             f_sym.insert(next_nt[1] - off, sym_setindex(self.category, next_nt[0]))
+ *             off += (nt_len - 1)
+ */
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_i, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2004; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_v_i);
+      __pyx_v_i = __pyx_t_3;
+      __pyx_t_3 = 0;
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2005
+ *                 f_sym.pop(next_nt[1] - off)
+ *                 i += 1
+ *             f_sym.insert(next_nt[1] - off, sym_setindex(self.category, next_nt[0]))             # <<<<<<<<<<<<<<
+ *             off += (nt_len - 1)
+ * 
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_next_nt, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_6 = PyNumber_Subtract(__pyx_t_3, __pyx_v_off); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_8 = __Pyx_PyIndex_AsSsize_t(__pyx_t_6); if (unlikely((__pyx_t_8 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_v_next_nt, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_6); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __pyx_t_6 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_10 = PyList_Insert(__pyx_v_f_sym, __pyx_t_8, __pyx_t_6); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2005; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2006
+ *                 i += 1
+ *             f_sym.insert(next_nt[1] - off, sym_setindex(self.category, next_nt[0]))
+ *             off += (nt_len - 1)             # <<<<<<<<<<<<<<
+ * 
+ *         e_sym = list(e_span[:])
+ */
+    __pyx_t_6 = PyNumber_Subtract(__pyx_v_nt_len, __pyx_int_1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_off, __pyx_t_6); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __Pyx_DECREF(__pyx_v_off);
+    __pyx_v_off = __pyx_t_3;
+    __pyx_t_3 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2008
+ *             off += (nt_len - 1)
+ * 
+ *         e_sym = list(e_span[:])             # <<<<<<<<<<<<<<
+ *         off = e_i
+ *         for next_nt in nt_inv:
+ */
+  __pyx_t_1 = __Pyx_PySequence_GetSlice(__pyx_v_e_span, 0, PY_SSIZE_T_MAX); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_4);
-  __Pyx_GIVEREF(__pyx_t_4);
-  __pyx_t_4 = 0;
-  __pyx_t_4 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_4);
-  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  __pyx_t_1 = 0;
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyList_Type))), ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2008; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
-  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  __pyx_v_e_sym = ((PyObject*)__pyx_t_1);
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2009
+ * 
+ *         e_sym = list(e_span[:])
+ *         off = e_i             # <<<<<<<<<<<<<<
+ *         for next_nt in nt_inv:
+ *             nt_len = (next_nt[4] - next_nt[3]) + 1
+ */
+  __Pyx_INCREF(__pyx_v_e_i);
+  __Pyx_DECREF(__pyx_v_off);
+  __pyx_v_off = __pyx_v_e_i;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
- *         logger.info("I would add:")
- *         logger.info(decode_words(f_words))
- *         logger.info(decode_words(e_words))             # <<<<<<<<<<<<<<
- *         logger.info(alignment)
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2010
+ *         e_sym = list(e_span[:])
+ *         off = e_i
+ *         for next_nt in nt_inv:             # <<<<<<<<<<<<<<
+ *             nt_len = (next_nt[4] - next_nt[3]) + 1
+ *             i = 0
  */
-  __pyx_t_4 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_3 = PyObject_GetAttr(__pyx_t_4, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyList_CheckExact(__pyx_v_nt_inv) || PyTuple_CheckExact(__pyx_v_nt_inv)) {
+    __pyx_t_1 = __pyx_v_nt_inv; __Pyx_INCREF(__pyx_t_1); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_nt_inv); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_5 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_3 = __pyx_t_5(__pyx_t_1);
+      if (unlikely(!__pyx_t_3)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_3);
+    }
+    __Pyx_XDECREF(__pyx_v_next_nt);
+    __pyx_v_next_nt = __pyx_t_3;
+    __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2011
+ *         off = e_i
+ *         for next_nt in nt_inv:
+ *             nt_len = (next_nt[4] - next_nt[3]) + 1             # <<<<<<<<<<<<<<
+ *             i = 0
+ *             while i < nt_len:
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_next_nt, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_6 = __Pyx_GetItemInt(__pyx_v_next_nt, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_6) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __pyx_t_2 = PyNumber_Subtract(__pyx_t_3, __pyx_t_6); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+    __pyx_t_6 = PyNumber_Add(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2011; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_XDECREF(__pyx_v_nt_len);
+    __pyx_v_nt_len = __pyx_t_6;
+    __pyx_t_6 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2012
+ *         for next_nt in nt_inv:
+ *             nt_len = (next_nt[4] - next_nt[3]) + 1
+ *             i = 0             # <<<<<<<<<<<<<<
+ *             while i < nt_len:
+ *                 e_sym.pop(next_nt[3] - off)
+ */
+    __Pyx_INCREF(__pyx_int_0);
+    __Pyx_XDECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_int_0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2013
+ *             nt_len = (next_nt[4] - next_nt[3]) + 1
+ *             i = 0
+ *             while i < nt_len:             # <<<<<<<<<<<<<<
+ *                 e_sym.pop(next_nt[3] - off)
+ *                 i += 1
+ */
+    while (1) {
+      __pyx_t_6 = PyObject_RichCompare(__pyx_v_i, __pyx_v_nt_len, Py_LT); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+      if (!__pyx_t_7) break;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2014
+ *             i = 0
+ *             while i < nt_len:
+ *                 e_sym.pop(next_nt[3] - off)             # <<<<<<<<<<<<<<
+ *                 i += 1
+ *             e_sym.insert(next_nt[3] - off, sym_setindex(self.category, next_nt[0]))
+ */
+      __pyx_t_6 = PyObject_GetAttr(((PyObject *)__pyx_v_e_sym), __pyx_n_s__pop); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_6);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_next_nt, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = PyNumber_Subtract(__pyx_t_2, __pyx_v_off); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_3);
+      __Pyx_GIVEREF(__pyx_t_3);
+      __pyx_t_3 = 0;
+      __pyx_t_3 = PyObject_Call(__pyx_t_6, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
+      __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2015
+ *             while i < nt_len:
+ *                 e_sym.pop(next_nt[3] - off)
+ *                 i += 1             # <<<<<<<<<<<<<<
+ *             e_sym.insert(next_nt[3] - off, sym_setindex(self.category, next_nt[0]))
+ *             off += (nt_len - 1)
+ */
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_i, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2015; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_v_i);
+      __pyx_v_i = __pyx_t_3;
+      __pyx_t_3 = 0;
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2016
+ *                 e_sym.pop(next_nt[3] - off)
+ *                 i += 1
+ *             e_sym.insert(next_nt[3] - off, sym_setindex(self.category, next_nt[0]))             # <<<<<<<<<<<<<<
+ *             off += (nt_len - 1)
+ * 
+ */
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_next_nt, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_2 = PyNumber_Subtract(__pyx_t_3, __pyx_v_off); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_8 = __Pyx_PyIndex_AsSsize_t(__pyx_t_2); if (unlikely((__pyx_t_8 == (Py_ssize_t)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_next_nt, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_2); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_10 = PyList_Insert(__pyx_v_e_sym, __pyx_t_8, __pyx_t_2); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2016; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2017
+ *                 i += 1
+ *             e_sym.insert(next_nt[3] - off, sym_setindex(self.category, next_nt[0]))
+ *             off += (nt_len - 1)             # <<<<<<<<<<<<<<
+ * 
+ *         # Adjusting alignment links takes some doing
+ */
+    __pyx_t_2 = PyNumber_Subtract(__pyx_v_nt_len, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_off, __pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_DECREF(__pyx_v_off);
+    __pyx_v_off = __pyx_t_3;
+    __pyx_t_3 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2020
+ * 
+ *         # Adjusting alignment links takes some doing
+ *         links = [list(link) for sub in al for link in sub]             # <<<<<<<<<<<<<<
+ *         links_len = len(links)
+ *         nt_len = len(nt)
+ */
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyList_CheckExact(__pyx_v_al) || PyTuple_CheckExact(__pyx_v_al)) {
+    __pyx_t_3 = __pyx_v_al; __Pyx_INCREF(__pyx_t_3); __pyx_t_4 = 0;
+    __pyx_t_5 = NULL;
+  } else {
+    __pyx_t_4 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_al); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_5 = Py_TYPE(__pyx_t_3)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_5 && PyList_CheckExact(__pyx_t_3)) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_4); __Pyx_INCREF(__pyx_t_2); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_5 && PyTuple_CheckExact(__pyx_t_3)) {
+      if (__pyx_t_4 >= PyTuple_GET_SIZE(__pyx_t_3)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_4); __Pyx_INCREF(__pyx_t_2); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_2 = __pyx_t_5(__pyx_t_3);
+      if (unlikely(!__pyx_t_2)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_2);
+    }
+    __Pyx_XDECREF(__pyx_v_sub);
+    __pyx_v_sub = __pyx_t_2;
+    __pyx_t_2 = 0;
+    if (PyList_CheckExact(__pyx_v_sub) || PyTuple_CheckExact(__pyx_v_sub)) {
+      __pyx_t_2 = __pyx_v_sub; __Pyx_INCREF(__pyx_t_2); __pyx_t_8 = 0;
+      __pyx_t_11 = NULL;
+    } else {
+      __pyx_t_8 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_sub); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_11 = Py_TYPE(__pyx_t_2)->tp_iternext;
+    }
+    for (;;) {
+      if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_2)) {
+        if (__pyx_t_8 >= PyList_GET_SIZE(__pyx_t_2)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_6 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_8); __Pyx_INCREF(__pyx_t_6); __pyx_t_8++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_2)) {
+        if (__pyx_t_8 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
+        __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_8); __Pyx_INCREF(__pyx_t_6); __pyx_t_8++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #else
+        __pyx_t_6 = PySequence_ITEM(__pyx_t_2, __pyx_t_8); __pyx_t_8++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        #endif
+      } else {
+        __pyx_t_6 = __pyx_t_11(__pyx_t_2);
+        if (unlikely(!__pyx_t_6)) {
+          if (PyErr_Occurred()) {
+            if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          }
+          break;
+        }
+        __Pyx_GOTREF(__pyx_t_6);
+      }
+      __Pyx_XDECREF(__pyx_v_link);
+      __pyx_v_link = __pyx_t_6;
+      __pyx_t_6 = 0;
+      __pyx_t_6 = PyTuple_New(1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_6);
+      __Pyx_INCREF(__pyx_v_link);
+      PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_v_link);
+      __Pyx_GIVEREF(__pyx_v_link);
+      __pyx_t_12 = PyObject_Call(((PyObject *)((PyObject*)(&PyList_Type))), ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_12)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_12);
+      __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
+      if (unlikely(__Pyx_PyList_Append(__pyx_t_1, (PyObject*)__pyx_t_12))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2020; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_12); __pyx_t_12 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  }
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_INCREF(((PyObject *)__pyx_t_1));
+  __pyx_v_links = __pyx_t_1;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2021
+ *         # Adjusting alignment links takes some doing
+ *         links = [list(link) for sub in al for link in sub]
+ *         links_len = len(links)             # <<<<<<<<<<<<<<
+ *         nt_len = len(nt)
+ *         nt_i = 0
+ */
+  __pyx_t_4 = PyList_GET_SIZE(((PyObject *)__pyx_v_links)); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2021; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2021; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_v_links_len = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2022
+ *         links = [list(link) for sub in al for link in sub]
+ *         links_len = len(links)
+ *         nt_len = len(nt)             # <<<<<<<<<<<<<<
+ *         nt_i = 0
+ *         off = f_i
+ */
+  __pyx_t_4 = PyObject_Length(__pyx_v_nt); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2022; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2022; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_v_nt_len);
+  __pyx_v_nt_len = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2023
+ *         links_len = len(links)
+ *         nt_len = len(nt)
+ *         nt_i = 0             # <<<<<<<<<<<<<<
+ *         off = f_i
+ *         i = 0
+ */
+  __Pyx_INCREF(__pyx_int_0);
+  __pyx_v_nt_i = __pyx_int_0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2024
+ *         nt_len = len(nt)
+ *         nt_i = 0
+ *         off = f_i             # <<<<<<<<<<<<<<
+ *         i = 0
+ *         while i < links_len:
+ */
+  __Pyx_INCREF(__pyx_v_f_i);
+  __Pyx_DECREF(__pyx_v_off);
+  __pyx_v_off = __pyx_v_f_i;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2025
+ *         nt_i = 0
+ *         off = f_i
+ *         i = 0             # <<<<<<<<<<<<<<
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][0] > nt[nt_i][1]:
+ */
+  __Pyx_INCREF(__pyx_int_0);
+  __Pyx_XDECREF(__pyx_v_i);
+  __pyx_v_i = __pyx_int_0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2026
+ *         off = f_i
+ *         i = 0
+ *         while i < links_len:             # <<<<<<<<<<<<<<
+ *             while nt_i < nt_len and links[i][0] > nt[nt_i][1]:
+ *                 off += (nt[nt_i][2] - nt[nt_i][1])
+ */
+  while (1) {
+    __pyx_t_1 = PyObject_RichCompare(__pyx_v_i, __pyx_v_links_len, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2026; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2026; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (!__pyx_t_7) break;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2027
+ *         i = 0
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][0] > nt[nt_i][1]:             # <<<<<<<<<<<<<<
+ *                 off += (nt[nt_i][2] - nt[nt_i][1])
+ *                 nt_i += 1
+ */
+    while (1) {
+      __pyx_t_1 = PyObject_RichCompare(__pyx_v_nt_i, __pyx_v_nt_len, Py_LT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      if (__pyx_t_7) {
+        __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_links), __pyx_v_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_1, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_3);
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_1 = PyObject_GetItem(__pyx_v_nt, __pyx_v_nt_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_2);
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_1 = PyObject_RichCompare(__pyx_t_3, __pyx_t_2, Py_GT); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+        __pyx_t_13 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_13 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2027; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_14 = __pyx_t_13;
+      } else {
+        __pyx_t_14 = __pyx_t_7;
+      }
+      if (!__pyx_t_14) break;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2028
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][0] > nt[nt_i][1]:
+ *                 off += (nt[nt_i][2] - nt[nt_i][1])             # <<<<<<<<<<<<<<
+ *                 nt_i += 1
+ *             links[i][0] -= off
+ */
+      __pyx_t_1 = PyObject_GetItem(__pyx_v_nt, __pyx_v_nt_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, 2, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __pyx_t_1 = PyObject_GetItem(__pyx_v_nt, __pyx_v_nt_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_1, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __pyx_t_1 = PyNumber_Subtract(__pyx_t_2, __pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_off, __pyx_t_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2028; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __Pyx_DECREF(__pyx_v_off);
+      __pyx_v_off = __pyx_t_3;
+      __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2029
+ *             while nt_i < nt_len and links[i][0] > nt[nt_i][1]:
+ *                 off += (nt[nt_i][2] - nt[nt_i][1])
+ *                 nt_i += 1             # <<<<<<<<<<<<<<
+ *             links[i][0] -= off
+ *             i += 1
+ */
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_nt_i, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_v_nt_i);
+      __pyx_v_nt_i = __pyx_t_3;
+      __pyx_t_3 = 0;
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2030
+ *                 off += (nt[nt_i][2] - nt[nt_i][1])
+ *                 nt_i += 1
+ *             links[i][0] -= off             # <<<<<<<<<<<<<<
+ *             i += 1
+ *         nt_i = 0
+ */
+    __pyx_t_3 = PyObject_GetItem(((PyObject *)__pyx_v_links), __pyx_v_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_4 = 0;
+    __pyx_t_1 = __Pyx_GetItemInt(__pyx_t_3, __pyx_t_4, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_2 = PyNumber_InPlaceSubtract(__pyx_t_1, __pyx_v_off); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (__Pyx_SetItemInt(__pyx_t_3, __pyx_t_4, __pyx_t_2, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2031
+ *                 nt_i += 1
+ *             links[i][0] -= off
+ *             i += 1             # <<<<<<<<<<<<<<
+ *         nt_i = 0
+ *         off = e_i
+ */
+    __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_i, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2031; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_3;
+    __pyx_t_3 = 0;
+  }
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2032
+ *             links[i][0] -= off
+ *             i += 1
+ *         nt_i = 0             # <<<<<<<<<<<<<<
+ *         off = e_i
+ *         i = 0
+ */
+  __Pyx_INCREF(__pyx_int_0);
+  __Pyx_DECREF(__pyx_v_nt_i);
+  __pyx_v_nt_i = __pyx_int_0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2033
+ *             i += 1
+ *         nt_i = 0
+ *         off = e_i             # <<<<<<<<<<<<<<
+ *         i = 0
+ *         while i < links_len:
+ */
+  __Pyx_INCREF(__pyx_v_e_i);
+  __Pyx_DECREF(__pyx_v_off);
+  __pyx_v_off = __pyx_v_e_i;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2034
+ *         nt_i = 0
+ *         off = e_i
+ *         i = 0             # <<<<<<<<<<<<<<
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:
+ */
+  __Pyx_INCREF(__pyx_int_0);
+  __Pyx_DECREF(__pyx_v_i);
+  __pyx_v_i = __pyx_int_0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2035
+ *         off = e_i
+ *         i = 0
+ *         while i < links_len:             # <<<<<<<<<<<<<<
+ *             while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:
+ *                 off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])
+ */
+  while (1) {
+    __pyx_t_3 = PyObject_RichCompare(__pyx_v_i, __pyx_v_links_len, Py_LT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    if (!__pyx_t_14) break;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2036
+ *         i = 0
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:             # <<<<<<<<<<<<<<
+ *                 off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])
+ *                 nt_i += 1
+ */
+    while (1) {
+      __pyx_t_3 = PyObject_RichCompare(__pyx_v_nt_i, __pyx_v_nt_len, Py_LT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      if (__pyx_t_14) {
+        __pyx_t_3 = PyObject_GetItem(((PyObject *)__pyx_v_links), __pyx_v_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_3);
+        __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_2);
+        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+        __pyx_t_3 = PyObject_GetItem(__pyx_v_nt_inv, __pyx_v_nt_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_3);
+        __pyx_t_1 = __Pyx_GetItemInt(__pyx_t_3, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+        __pyx_t_3 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GT); __Pyx_XGOTREF(__pyx_t_3); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+        __pyx_t_13 = __pyx_t_7;
+      } else {
+        __pyx_t_13 = __pyx_t_14;
+      }
+      if (!__pyx_t_13) break;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2037
+ *         while i < links_len:
+ *             while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:
+ *                 off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])             # <<<<<<<<<<<<<<
+ *                 nt_i += 1
+ *             links[i][1] -= off
+ */
+      __pyx_t_3 = PyObject_GetItem(__pyx_v_nt_inv, __pyx_v_nt_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_1 = __Pyx_GetItemInt(__pyx_t_3, 4, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyObject_GetItem(__pyx_v_nt_inv, __pyx_v_nt_i); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_3, 3, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __pyx_t_3 = PyNumber_Subtract(__pyx_t_1, __pyx_t_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_off, __pyx_t_3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      __Pyx_DECREF(__pyx_v_off);
+      __pyx_v_off = __pyx_t_2;
+      __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2038
+ *             while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:
+ *                 off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])
+ *                 nt_i += 1             # <<<<<<<<<<<<<<
+ *             links[i][1] -= off
+ *             i += 1
+ */
+      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_nt_i, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2038; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_v_nt_i);
+      __pyx_v_nt_i = __pyx_t_2;
+      __pyx_t_2 = 0;
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2039
+ *                 off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])
+ *                 nt_i += 1
+ *             links[i][1] -= off             # <<<<<<<<<<<<<<
+ *             i += 1
+ * 
+ */
+    __pyx_t_2 = PyObject_GetItem(((PyObject *)__pyx_v_links), __pyx_v_i); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __pyx_t_4 = 1;
+    __pyx_t_3 = __Pyx_GetItemInt(__pyx_t_2, __pyx_t_4, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_1 = PyNumber_InPlaceSubtract(__pyx_t_3, __pyx_v_off); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    if (__Pyx_SetItemInt(__pyx_t_2, __pyx_t_4, __pyx_t_1, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2040
+ *                 nt_i += 1
+ *             links[i][1] -= off
+ *             i += 1             # <<<<<<<<<<<<<<
+ * 
+ *         # Rule
+ */
+    __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_i, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2040; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_2;
+    __pyx_t_2 = 0;
+  }
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2043
+ * 
+ *         # Rule
+ *         rules.append(fmt_rule(f_sym, e_sym, links))             # <<<<<<<<<<<<<<
+ *         if len(f_sym) >= self.max_length or len(nt) >= self.max_nonterminals:
+ *             return rules
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__fmt_rule); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_1 = PyTuple_New(3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_INCREF(((PyObject *)__pyx_v_f_sym));
+  PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_f_sym));
+  __Pyx_GIVEREF(((PyObject *)__pyx_v_f_sym));
+  __Pyx_INCREF(((PyObject *)__pyx_v_e_sym));
+  PyTuple_SET_ITEM(__pyx_t_1, 1, ((PyObject *)__pyx_v_e_sym));
+  __Pyx_GIVEREF(((PyObject *)__pyx_v_e_sym));
+  __Pyx_INCREF(((PyObject *)__pyx_v_links));
+  PyTuple_SET_ITEM(__pyx_t_1, 2, ((PyObject *)__pyx_v_links));
+  __Pyx_GIVEREF(((PyObject *)__pyx_v_links));
+  __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
-  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  __pyx_t_4 = __Pyx_GetName(__pyx_m, __pyx_n_s__decode_words); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __pyx_t_10 = PyList_Append(__pyx_v_rules, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2044
+ *         # Rule
+ *         rules.append(fmt_rule(f_sym, e_sym, links))
+ *         if len(f_sym) >= self.max_length or len(nt) >= self.max_nonterminals:             # <<<<<<<<<<<<<<
+ *             return rules
+ *         last_index = nt[-1][0] if nt else 0
+ */
+  __pyx_t_4 = PyList_GET_SIZE(((PyObject *)__pyx_v_f_sym)); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2044; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = (__pyx_t_4 >= __pyx_v_self->max_length);
+  if (!__pyx_t_13) {
+    __pyx_t_4 = PyObject_Length(__pyx_v_nt); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2044; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_14 = (__pyx_t_4 >= __pyx_v_self->max_nonterminals);
+    __pyx_t_7 = __pyx_t_14;
+  } else {
+    __pyx_t_7 = __pyx_t_13;
+  }
+  if (__pyx_t_7) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2045
+ *         rules.append(fmt_rule(f_sym, e_sym, links))
+ *         if len(f_sym) >= self.max_length or len(nt) >= self.max_nonterminals:
+ *             return rules             # <<<<<<<<<<<<<<
+ *         last_index = nt[-1][0] if nt else 0
+ *         # Rule [X]
+ */
+    __Pyx_XDECREF(__pyx_r);
+    __Pyx_INCREF(((PyObject *)__pyx_v_rules));
+    __pyx_r = ((PyObject *)__pyx_v_rules);
+    goto __pyx_L0;
+    goto __pyx_L23;
+  }
+  __pyx_L23:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2046
+ *         if len(f_sym) >= self.max_length or len(nt) >= self.max_nonterminals:
+ *             return rules
+ *         last_index = nt[-1][0] if nt else 0             # <<<<<<<<<<<<<<
+ *         # Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ */
+  __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__pyx_t_7) {
+    __pyx_t_1 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_2 = __Pyx_GetItemInt(__pyx_t_1, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __pyx_t_3 = __pyx_t_2;
+    __pyx_t_2 = 0;
+  } else {
+    __Pyx_INCREF(__pyx_int_0);
+    __pyx_t_3 = __pyx_int_0;
+  }
+  __pyx_v_last_index = __pyx_t_3;
+  __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2048
+ *         last_index = nt[-1][0] if nt else 0
+ *         # Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):             # <<<<<<<<<<<<<<
+ *             f_sym.append(sym_setindex(self.category, last_index + 1))
+ *             e_sym.append(sym_setindex(self.category, last_index + 1))
+ */
+  __pyx_t_7 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = (!__pyx_t_7);
+  if (!__pyx_t_13) {
+    __pyx_t_3 = __Pyx_GetItemInt_List(((PyObject *)__pyx_v_f_sym), -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_7 = (!__pyx_f_3_sa_sym_isvar(__pyx_t_9));
+    __pyx_t_14 = __pyx_t_7;
+  } else {
+    __pyx_t_14 = __pyx_t_13;
+  }
+  if (__pyx_t_14) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2049
+ *         # Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ *             f_sym.append(sym_setindex(self.category, last_index + 1))             # <<<<<<<<<<<<<<
+ *             e_sym.append(sym_setindex(self.category, last_index + 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ */
+    __pyx_t_3 = PyNumber_Add(__pyx_v_last_index, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_10 = PyList_Append(__pyx_v_f_sym, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2050
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ *             f_sym.append(sym_setindex(self.category, last_index + 1))
+ *             e_sym.append(sym_setindex(self.category, last_index + 1))             # <<<<<<<<<<<<<<
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *             f_sym.pop()
+ */
+    __pyx_t_3 = PyNumber_Add(__pyx_v_last_index, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2050; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2050; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2050; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_10 = PyList_Append(__pyx_v_e_sym, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2050; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2051
+ *             f_sym.append(sym_setindex(self.category, last_index + 1))
+ *             e_sym.append(sym_setindex(self.category, last_index + 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))             # <<<<<<<<<<<<<<
+ *             f_sym.pop()
+ *             e_sym.pop()
+ */
+    __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__fmt_rule); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2051; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2051; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_INCREF(((PyObject *)__pyx_v_f_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_f_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_f_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_e_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_v_e_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_e_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_links));
+    PyTuple_SET_ITEM(__pyx_t_2, 2, ((PyObject *)__pyx_v_links));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_links));
+    __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2051; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+    __pyx_t_10 = PyList_Append(__pyx_v_rules, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2051; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2052
+ *             e_sym.append(sym_setindex(self.category, last_index + 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *             f_sym.pop()             # <<<<<<<<<<<<<<
+ *             e_sym.pop()
+ *         # [X] Rule
+ */
+    __pyx_t_1 = __Pyx_PyObject_Pop(((PyObject *)__pyx_v_f_sym)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2053
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *             f_sym.pop()
+ *             e_sym.pop()             # <<<<<<<<<<<<<<
+ *         # [X] Rule
+ *         f_len = len(f_sym)
+ */
+    __pyx_t_1 = __Pyx_PyObject_Pop(((PyObject *)__pyx_v_e_sym)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2053; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    goto __pyx_L24;
+  }
+  __pyx_L24:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2055
+ *             e_sym.pop()
+ *         # [X] Rule
+ *         f_len = len(f_sym)             # <<<<<<<<<<<<<<
+ *         e_len = len(e_sym)
+ *         if not nt or not sym_isvar(f_sym[0]):
+ */
+  __pyx_t_4 = PyList_GET_SIZE(((PyObject *)__pyx_v_f_sym)); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_v_f_len = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2056
+ *         # [X] Rule
+ *         f_len = len(f_sym)
+ *         e_len = len(e_sym)             # <<<<<<<<<<<<<<
+ *         if not nt or not sym_isvar(f_sym[0]):
+ *             for i from 0 <= i < f_len:
+ */
+  __pyx_t_4 = PyList_GET_SIZE(((PyObject *)__pyx_v_e_sym)); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_v_e_len = __pyx_t_1;
+  __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2057
+ *         f_len = len(f_sym)
+ *         e_len = len(e_sym)
+ *         if not nt or not sym_isvar(f_sym[0]):             # <<<<<<<<<<<<<<
+ *             for i from 0 <= i < f_len:
+ *                 if sym_isvar(f_sym[i]):
+ */
+  __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2057; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_13 = (!__pyx_t_14);
+  if (!__pyx_t_13) {
+    __pyx_t_1 = __Pyx_GetItemInt_List(((PyObject *)__pyx_v_f_sym), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2057; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2057; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __pyx_t_14 = (!__pyx_f_3_sa_sym_isvar(__pyx_t_9));
+    __pyx_t_7 = __pyx_t_14;
+  } else {
+    __pyx_t_7 = __pyx_t_13;
+  }
+  if (__pyx_t_7) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2058
+ *         e_len = len(e_sym)
+ *         if not nt or not sym_isvar(f_sym[0]):
+ *             for i from 0 <= i < f_len:             # <<<<<<<<<<<<<<
+ *                 if sym_isvar(f_sym[i]):
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ */
+    __pyx_t_15 = __Pyx_PyInt_AsLong(__pyx_v_f_len); if (unlikely((__pyx_t_15 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    for (__pyx_t_16 = 0; __pyx_t_16 < __pyx_t_15; __pyx_t_16++) {
+      __pyx_t_1 = PyInt_FromLong(__pyx_t_16); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __Pyx_DECREF(__pyx_v_i);
+      __pyx_v_i = __pyx_t_1;
+      __pyx_t_1 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2059
+ *         if not nt or not sym_isvar(f_sym[0]):
+ *             for i from 0 <= i < f_len:
+ *                 if sym_isvar(f_sym[i]):             # <<<<<<<<<<<<<<
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ *             for i from 0 <= i < e_len:
+ */
+      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_f_sym), __pyx_v_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2059; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2059; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __pyx_t_17 = __pyx_f_3_sa_sym_isvar(__pyx_t_9);
+      if (__pyx_t_17) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2060
+ *             for i from 0 <= i < f_len:
+ *                 if sym_isvar(f_sym[i]):
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)             # <<<<<<<<<<<<<<
+ *             for i from 0 <= i < e_len:
+ *                 if sym_isvar(e_sym[i]):
+ */
+        __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_f_sym), __pyx_v_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2060; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        __pyx_t_17 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_17 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2060; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, (__pyx_f_3_sa_sym_getindex(__pyx_t_17) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2060; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        if (PyObject_SetItem(((PyObject *)__pyx_v_f_sym), __pyx_v_i, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2060; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        goto __pyx_L28;
+      }
+      __pyx_L28:;
+      __pyx_t_16 = __Pyx_PyInt_AsLong(__pyx_v_i); if (unlikely((__pyx_t_16 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2058
+ *         e_len = len(e_sym)
+ *         if not nt or not sym_isvar(f_sym[0]):
+ *             for i from 0 <= i < f_len:             # <<<<<<<<<<<<<<
+ *                 if sym_isvar(f_sym[i]):
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ */
+    __pyx_t_1 = PyInt_FromLong(__pyx_t_16); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_1;
+    __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2061
+ *                 if sym_isvar(f_sym[i]):
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ *             for i from 0 <= i < e_len:             # <<<<<<<<<<<<<<
+ *                 if sym_isvar(e_sym[i]):
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+ */
+    __pyx_t_16 = __Pyx_PyInt_AsLong(__pyx_v_e_len); if (unlikely((__pyx_t_16 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2061; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    for (__pyx_t_15 = 0; __pyx_t_15 < __pyx_t_16; __pyx_t_15++) {
+      __pyx_t_1 = PyInt_FromLong(__pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2061; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __Pyx_DECREF(__pyx_v_i);
+      __pyx_v_i = __pyx_t_1;
+      __pyx_t_1 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2062
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ *             for i from 0 <= i < e_len:
+ *                 if sym_isvar(e_sym[i]):             # <<<<<<<<<<<<<<
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+ *             for link in links:
+ */
+      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_e_sym), __pyx_v_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __pyx_t_17 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_17 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+      __pyx_t_9 = __pyx_f_3_sa_sym_isvar(__pyx_t_17);
+      if (__pyx_t_9) {
+
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2063
+ *             for i from 0 <= i < e_len:
+ *                 if sym_isvar(e_sym[i]):
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)             # <<<<<<<<<<<<<<
+ *             for link in links:
+ *                 link[0] += 1
+ */
+        __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_e_sym), __pyx_v_i); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, (__pyx_f_3_sa_sym_getindex(__pyx_t_9) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_GOTREF(__pyx_t_1);
+        if (PyObject_SetItem(((PyObject *)__pyx_v_e_sym), __pyx_v_i, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+        goto __pyx_L31;
+      }
+      __pyx_L31:;
+      __pyx_t_15 = __Pyx_PyInt_AsLong(__pyx_v_i); if (unlikely((__pyx_t_15 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2061; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    }
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2061
+ *                 if sym_isvar(f_sym[i]):
+ *                     f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+ *             for i from 0 <= i < e_len:             # <<<<<<<<<<<<<<
+ *                 if sym_isvar(e_sym[i]):
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+ */
+    __pyx_t_1 = PyInt_FromLong(__pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2061; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_v_i);
+    __pyx_v_i = __pyx_t_1;
+    __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2064
+ *                 if sym_isvar(e_sym[i]):
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+ *             for link in links:             # <<<<<<<<<<<<<<
+ *                 link[0] += 1
+ *                 link[1] += 1
+ */
+    __pyx_t_1 = ((PyObject *)__pyx_v_links); __Pyx_INCREF(__pyx_t_1); __pyx_t_4 = 0;
+    for (;;) {
+      if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_2 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_2); __pyx_t_4++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2064; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_2 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2064; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+      __Pyx_XDECREF(__pyx_v_link);
+      __pyx_v_link = __pyx_t_2;
+      __pyx_t_2 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2065
+ *                     e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+ *             for link in links:
+ *                 link[0] += 1             # <<<<<<<<<<<<<<
+ *                 link[1] += 1
+ *             f_sym.insert(0, sym_setindex(self.category, 1))
+ */
+      __pyx_t_8 = 0;
+      __pyx_t_2 = __Pyx_GetItemInt(__pyx_v_link, __pyx_t_8, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_t_2, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+      if (__Pyx_SetItemInt(__pyx_v_link, __pyx_t_8, __pyx_t_3, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2066
+ *             for link in links:
+ *                 link[0] += 1
+ *                 link[1] += 1             # <<<<<<<<<<<<<<
+ *             f_sym.insert(0, sym_setindex(self.category, 1))
+ *             e_sym.insert(0, sym_setindex(self.category, 1))
+ */
+      __pyx_t_8 = 1;
+      __pyx_t_3 = __Pyx_GetItemInt(__pyx_v_link, __pyx_t_8, sizeof(Py_ssize_t), PyInt_FromSsize_t); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_3);
+      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_t_3, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_2);
+      __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+      if (__Pyx_SetItemInt(__pyx_v_link, __pyx_t_8, __pyx_t_2, sizeof(Py_ssize_t), PyInt_FromSsize_t) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+    }
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2067
+ *                 link[0] += 1
+ *                 link[1] += 1
+ *             f_sym.insert(0, sym_setindex(self.category, 1))             # <<<<<<<<<<<<<<
+ *             e_sym.insert(0, sym_setindex(self.category, 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ */
+    __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_10 = PyList_Insert(__pyx_v_f_sym, 0, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2067; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2068
+ *                 link[1] += 1
+ *             f_sym.insert(0, sym_setindex(self.category, 1))
+ *             e_sym.insert(0, sym_setindex(self.category, 1))             # <<<<<<<<<<<<<<
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *         if len(f_sym) >= self.max_length or len(nt) + 1 >= self.max_nonterminals:
+ */
+    __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, 1)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2068; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_10 = PyList_Insert(__pyx_v_e_sym, 0, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2068; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2069
+ *             f_sym.insert(0, sym_setindex(self.category, 1))
+ *             e_sym.insert(0, sym_setindex(self.category, 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))             # <<<<<<<<<<<<<<
+ *         if len(f_sym) >= self.max_length or len(nt) + 1 >= self.max_nonterminals:
+ *             return rules
+ */
+    __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__fmt_rule); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_INCREF(((PyObject *)__pyx_v_f_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_f_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_f_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_e_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_v_e_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_e_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_links));
+    PyTuple_SET_ITEM(__pyx_t_2, 2, ((PyObject *)__pyx_v_links));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_links));
+    __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+    __pyx_t_10 = PyList_Append(__pyx_v_rules, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    goto __pyx_L25;
+  }
+  __pyx_L25:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2070
+ *             e_sym.insert(0, sym_setindex(self.category, 1))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *         if len(f_sym) >= self.max_length or len(nt) + 1 >= self.max_nonterminals:             # <<<<<<<<<<<<<<
+ *             return rules
+ *         # [X] Rule [X]
+ */
+  __pyx_t_4 = PyList_GET_SIZE(((PyObject *)__pyx_v_f_sym)); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_7 = (__pyx_t_4 >= __pyx_v_self->max_length);
+  if (!__pyx_t_7) {
+    __pyx_t_4 = PyObject_Length(__pyx_v_nt); if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_13 = ((__pyx_t_4 + 1) >= __pyx_v_self->max_nonterminals);
+    __pyx_t_14 = __pyx_t_13;
+  } else {
+    __pyx_t_14 = __pyx_t_7;
+  }
+  if (__pyx_t_14) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2071
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *         if len(f_sym) >= self.max_length or len(nt) + 1 >= self.max_nonterminals:
+ *             return rules             # <<<<<<<<<<<<<<
+ *         # [X] Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ */
+    __Pyx_XDECREF(__pyx_r);
+    __Pyx_INCREF(((PyObject *)__pyx_v_rules));
+    __pyx_r = ((PyObject *)__pyx_v_rules);
+    goto __pyx_L0;
+    goto __pyx_L34;
+  }
+  __pyx_L34:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2073
+ *             return rules
+ *         # [X] Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):             # <<<<<<<<<<<<<<
+ *             f_sym.append(sym_setindex(self.category, last_index + 2))
+ *             e_sym.append(sym_setindex(self.category, last_index + 2))
+ */
+  __pyx_t_14 = __Pyx_PyObject_IsTrue(__pyx_v_nt); if (unlikely(__pyx_t_14 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_7 = (!__pyx_t_14);
+  if (!__pyx_t_7) {
+    __pyx_t_3 = __Pyx_GetItemInt_List(((PyObject *)__pyx_v_f_sym), -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_14 = (!__pyx_f_3_sa_sym_isvar(__pyx_t_9));
+    __pyx_t_13 = __pyx_t_14;
+  } else {
+    __pyx_t_13 = __pyx_t_7;
+  }
+  if (__pyx_t_13) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2074
+ *         # [X] Rule [X]
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ *             f_sym.append(sym_setindex(self.category, last_index + 2))             # <<<<<<<<<<<<<<
+ *             e_sym.append(sym_setindex(self.category, last_index + 2))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ */
+    __pyx_t_3 = PyNumber_Add(__pyx_v_last_index, __pyx_int_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2074; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2074; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2074; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_10 = PyList_Append(__pyx_v_f_sym, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2074; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2075
+ *         if not nt or not sym_isvar(f_sym[-1]):
+ *             f_sym.append(sym_setindex(self.category, last_index + 2))
+ *             e_sym.append(sym_setindex(self.category, last_index + 2))             # <<<<<<<<<<<<<<
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *         return rules
+ */
+    __pyx_t_3 = PyNumber_Add(__pyx_v_last_index, __pyx_int_2); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2075; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_9 = __Pyx_PyInt_AsInt(__pyx_t_3); if (unlikely((__pyx_t_9 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2075; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __pyx_t_3 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_t_9)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2075; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_10 = PyList_Append(__pyx_v_e_sym, __pyx_t_3); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2075; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2076
+ *             f_sym.append(sym_setindex(self.category, last_index + 2))
+ *             e_sym.append(sym_setindex(self.category, last_index + 2))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))             # <<<<<<<<<<<<<<
+ *         return rules
+ * 
+ */
+    __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__fmt_rule); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2076; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2076; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_2);
+    __Pyx_INCREF(((PyObject *)__pyx_v_f_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_f_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_f_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_e_sym));
+    PyTuple_SET_ITEM(__pyx_t_2, 1, ((PyObject *)__pyx_v_e_sym));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_e_sym));
+    __Pyx_INCREF(((PyObject *)__pyx_v_links));
+    PyTuple_SET_ITEM(__pyx_t_2, 2, ((PyObject *)__pyx_v_links));
+    __Pyx_GIVEREF(((PyObject *)__pyx_v_links));
+    __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2076; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+    __pyx_t_10 = PyList_Append(__pyx_v_rules, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2076; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    goto __pyx_L35;
+  }
+  __pyx_L35:;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2077
+ *             e_sym.append(sym_setindex(self.category, last_index + 2))
+ *             rules.append(fmt_rule(f_sym, e_sym, links))
+ *         return rules             # <<<<<<<<<<<<<<
+ * 
+ *     # Debugging
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __Pyx_INCREF(((PyObject *)__pyx_v_rules));
+  __pyx_r = ((PyObject *)__pyx_v_rules);
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_6);
+  __Pyx_XDECREF(__pyx_t_12);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.form_rules", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_rules);
+  __Pyx_XDECREF(__pyx_v_nt_inv);
+  __Pyx_XDECREF(__pyx_v_f_sym);
+  __Pyx_XDECREF(__pyx_v_off);
+  __Pyx_XDECREF(__pyx_v_next_nt);
+  __Pyx_XDECREF(__pyx_v_nt_len);
+  __Pyx_XDECREF(__pyx_v_i);
+  __Pyx_XDECREF(__pyx_v_e_sym);
+  __Pyx_XDECREF(__pyx_v_links);
+  __Pyx_XDECREF(__pyx_v_links_len);
+  __Pyx_XDECREF(__pyx_v_nt_i);
+  __Pyx_XDECREF(__pyx_v_last_index);
+  __Pyx_XDECREF(__pyx_v_f_len);
+  __Pyx_XDECREF(__pyx_v_e_len);
+  __Pyx_XDECREF(__pyx_v_link);
+  __Pyx_XDECREF(__pyx_v_sub);
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_32dump_online_stats(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused); /*proto*/
+static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_32dump_online_stats(PyObject *__pyx_v_self, CYTHON_UNUSED PyObject *unused) {
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("dump_online_stats (wrapper)", 0);
+  __pyx_r = __pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)__pyx_v_self));
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2080
+ * 
+ *     # Debugging
+ *     def dump_online_stats(self):             # <<<<<<<<<<<<<<
+ *         logger.info(self.phrases_f)
+ *         logger.info(self.phrases_e)
+ */
+
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("dump_online_stats", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2081
+ *     # Debugging
+ *     def dump_online_stats(self):
+ *         logger.info(self.phrases_f)             # <<<<<<<<<<<<<<
+ *         logger.info(self.phrases_e)
+ *         logger.info(self.phrases_fe)
+ */
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  __Pyx_INCREF(__pyx_v_e_words);
-  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_e_words);
-  __Pyx_GIVEREF(__pyx_v_e_words);
-  __pyx_t_1 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
-  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_INCREF(__pyx_v_self->phrases_f);
+  PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_v_self->phrases_f);
+  __Pyx_GIVEREF(__pyx_v_self->phrases_f);
+  __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2082
+ *     def dump_online_stats(self):
+ *         logger.info(self.phrases_f)
+ *         logger.info(self.phrases_e)             # <<<<<<<<<<<<<<
+ *         logger.info(self.phrases_fe)
+ * 
+ */
+  __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2082; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_1 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__info); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2082; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2082; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_INCREF(__pyx_v_self->phrases_e);
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_v_self->phrases_e);
+  __Pyx_GIVEREF(__pyx_v_self->phrases_e);
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2082; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
-  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_1);
-  __Pyx_GIVEREF(__pyx_t_1);
-  __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2083
+ *         logger.info(self.phrases_f)
+ *         logger.info(self.phrases_e)
+ *         logger.info(self.phrases_fe)             # <<<<<<<<<<<<<<
+ * 
+ * # Spans are _inclusive_ on both ends [i, j]
+ */
+  __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(__pyx_v_self->phrases_fe);
+  PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_self->phrases_fe);
+  __Pyx_GIVEREF(__pyx_v_self->phrases_fe);
+  __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1806
- *         logger.info(decode_words(f_words))
- *         logger.info(decode_words(e_words))
- *         logger.info(alignment)             # <<<<<<<<<<<<<<
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.dump_online_stats", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_13span_check(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_13span_check = {__Pyx_NAMESTR("span_check"), (PyCFunction)__pyx_pw_3_sa_13span_check, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_13span_check(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_vec = 0;
+  PyObject *__pyx_v_i = 0;
+  PyObject *__pyx_v_j = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("span_check (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__vec,&__pyx_n_s__i,&__pyx_n_s__j,0};
+    PyObject* values[3] = {0,0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__vec)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__i)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("span_check", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  2:
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__j)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("span_check", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "span_check") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+    }
+    __pyx_v_vec = values[0];
+    __pyx_v_i = values[1];
+    __pyx_v_j = values[2];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("span_check", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.span_check", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_12span_check(__pyx_self, __pyx_v_vec, __pyx_v_i, __pyx_v_j);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2087
+ * # Spans are _inclusive_ on both ends [i, j]
+ * # TODO: Replace all of this with bit vectors?
+ * def span_check(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+
+static PyObject *__pyx_pf_3_sa_12span_check(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j) {
+  PyObject *__pyx_v_k = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  int __pyx_t_2;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("span_check", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2088
+ * # TODO: Replace all of this with bit vectors?
+ * def span_check(vec, i, j):
+ *     k = i             # <<<<<<<<<<<<<<
+ *     while k <= j:
+ *         if vec[k]:
+ */
+  __Pyx_INCREF(__pyx_v_i);
+  __pyx_v_k = __pyx_v_i;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2089
+ * def span_check(vec, i, j):
+ *     k = i
+ *     while k <= j:             # <<<<<<<<<<<<<<
+ *         if vec[k]:
+ *             return False
+ */
+  while (1) {
+    __pyx_t_1 = PyObject_RichCompare(__pyx_v_k, __pyx_v_j, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2089; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2089; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (!__pyx_t_2) break;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2090
+ *     k = i
+ *     while k <= j:
+ *         if vec[k]:             # <<<<<<<<<<<<<<
+ *             return False
+ *         k += 1
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetItem(__pyx_v_vec, __pyx_v_k); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2090; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (__pyx_t_2) {
+
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2091
+ *     while k <= j:
+ *         if vec[k]:
+ *             return False             # <<<<<<<<<<<<<<
+ *         k += 1
+ *     return True
+ */
+      __Pyx_XDECREF(__pyx_r);
+      __pyx_t_1 = __Pyx_PyBool_FromLong(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2091; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_1);
+      __pyx_r = __pyx_t_1;
+      __pyx_t_1 = 0;
+      goto __pyx_L0;
+      goto __pyx_L5;
+    }
+    __pyx_L5:;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2092
+ *         if vec[k]:
+ *             return False
+ *         k += 1             # <<<<<<<<<<<<<<
+ *     return True
+ * 
+ */
+    __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_k, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __Pyx_DECREF(__pyx_v_k);
+    __pyx_v_k = __pyx_t_1;
+    __pyx_t_1 = 0;
+  }
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2093
+ *             return False
+ *         k += 1
+ *     return True             # <<<<<<<<<<<<<<
+ * 
+ * def span_flip(vec, i, j):
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_t_1;
+  __pyx_t_1 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_AddTraceback("_sa.span_check", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_k);
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_15span_flip(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_15span_flip = {__Pyx_NAMESTR("span_flip"), (PyCFunction)__pyx_pw_3_sa_15span_flip, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_15span_flip(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_vec = 0;
+  PyObject *__pyx_v_i = 0;
+  PyObject *__pyx_v_j = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("span_flip (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__vec,&__pyx_n_s__i,&__pyx_n_s__j,0};
+    PyObject* values[3] = {0,0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__vec)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__i)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("span_flip", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  2:
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__j)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("span_flip", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "span_flip") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+    }
+    __pyx_v_vec = values[0];
+    __pyx_v_i = values[1];
+    __pyx_v_j = values[2];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("span_flip", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.span_flip", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_14span_flip(__pyx_self, __pyx_v_vec, __pyx_v_i, __pyx_v_j);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2095
+ *     return True
+ * 
+ * def span_flip(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+
+static PyObject *__pyx_pf_3_sa_14span_flip(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j) {
+  PyObject *__pyx_v_k = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  int __pyx_t_2;
+  PyObject *__pyx_t_3 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("span_flip", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2096
+ * 
+ * def span_flip(vec, i, j):
+ *     k = i             # <<<<<<<<<<<<<<
+ *     while k <= j:
+ *         vec[k] = ~vec[k]
+ */
+  __Pyx_INCREF(__pyx_v_i);
+  __pyx_v_k = __pyx_v_i;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2097
+ * def span_flip(vec, i, j):
+ *     k = i
+ *     while k <= j:             # <<<<<<<<<<<<<<
+ *         vec[k] = ~vec[k]
+ *         k += 1
+ */
+  while (1) {
+    __pyx_t_1 = PyObject_RichCompare(__pyx_v_k, __pyx_v_j, Py_LE); __Pyx_XGOTREF(__pyx_t_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (!__pyx_t_2) break;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2098
+ *     k = i
+ *     while k <= j:
+ *         vec[k] = ~vec[k]             # <<<<<<<<<<<<<<
+ *         k += 1
+ * 
+ */
+    __pyx_t_1 = PyObject_GetItem(__pyx_v_vec, __pyx_v_k); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = PyNumber_Invert(__pyx_t_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+    if (PyObject_SetItem(__pyx_v_vec, __pyx_v_k, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2098; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2099
+ *     while k <= j:
+ *         vec[k] = ~vec[k]
+ *         k += 1             # <<<<<<<<<<<<<<
+ * 
+ * def fmt_rule(f_sym, e_sym, links):
+ */
+    __pyx_t_3 = PyNumber_InPlaceAdd(__pyx_v_k, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_3);
+    __Pyx_DECREF(__pyx_v_k);
+    __pyx_v_k = __pyx_t_3;
+    __pyx_t_3 = 0;
+  }
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_AddTraceback("_sa.span_flip", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_k);
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_17fmt_rule(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_17fmt_rule = {__Pyx_NAMESTR("fmt_rule"), (PyCFunction)__pyx_pw_3_sa_17fmt_rule, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_17fmt_rule(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
+  PyObject *__pyx_v_f_sym = 0;
+  PyObject *__pyx_v_e_sym = 0;
+  PyObject *__pyx_v_links = 0;
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("fmt_rule (wrapper)", 0);
+  {
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__f_sym,&__pyx_n_s__e_sym,&__pyx_n_s__links,0};
+    PyObject* values[3] = {0,0,0};
+    if (unlikely(__pyx_kwds)) {
+      Py_ssize_t kw_args;
+      const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
+      switch (pos_args) {
+        case  3: values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+        case  2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+        case  1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+        case  0: break;
+        default: goto __pyx_L5_argtuple_error;
+      }
+      kw_args = PyDict_Size(__pyx_kwds);
+      switch (pos_args) {
+        case  0:
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__f_sym)) != 0)) kw_args--;
+        else goto __pyx_L5_argtuple_error;
+        case  1:
+        if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_sym)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("fmt_rule", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+        case  2:
+        if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__links)) != 0)) kw_args--;
+        else {
+          __Pyx_RaiseArgtupleInvalid("fmt_rule", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        }
+      }
+      if (unlikely(kw_args > 0)) {
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "fmt_rule") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      }
+    } else if (PyTuple_GET_SIZE(__pyx_args) != 3) {
+      goto __pyx_L5_argtuple_error;
+    } else {
+      values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
+      values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
+      values[2] = PyTuple_GET_ITEM(__pyx_args, 2);
+    }
+    __pyx_v_f_sym = values[0];
+    __pyx_v_e_sym = values[1];
+    __pyx_v_links = values[2];
+  }
+  goto __pyx_L4_argument_unpacking_done;
+  __pyx_L5_argtuple_error:;
+  __Pyx_RaiseArgtupleInvalid("fmt_rule", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __pyx_L3_error:;
+  __Pyx_AddTraceback("_sa.fmt_rule", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+  __pyx_L4_argument_unpacking_done:;
+  __pyx_r = __pyx_pf_3_sa_16fmt_rule(__pyx_self, __pyx_v_f_sym, __pyx_v_e_sym, __pyx_v_links);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+static PyObject *__pyx_gb_3_sa_8fmt_rule_2generator14(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2102
+ * 
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ */
+
+static PyObject *__pyx_pf_3_sa_8fmt_rule_genexpr(PyObject *__pyx_self) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *__pyx_cur_scope;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("genexpr", 0);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr, __pyx_empty_tuple, NULL);
+  if (unlikely(!__pyx_cur_scope)) {
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __Pyx_GOTREF(__pyx_cur_scope);
+  __pyx_cur_scope->__pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *) __pyx_self;
+  __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_outer_scope));
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
+  {
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_8fmt_rule_2generator14, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_cur_scope);
+    __Pyx_RefNannyFinishContext();
+    return (PyObject *) gen;
+  }
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_AddTraceback("_sa.fmt_rule.genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_DECREF(((PyObject *)__pyx_cur_scope));
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+static PyObject *__pyx_gb_3_sa_8fmt_rule_2generator14(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+{
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)__pyx_generator->closure);
+  PyObject *__pyx_r = NULL;
+  PyObject *__pyx_t_1 = NULL;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  PyObject *__pyx_t_4 = NULL;
+  PyObject *__pyx_t_5 = NULL;
+  PyObject *__pyx_t_6 = NULL;
+  PyObject *__pyx_t_7 = NULL;
+  PyObject *(*__pyx_t_8)(PyObject *);
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("None", 0);
+  switch (__pyx_generator->resume_label) {
+    case 0: goto __pyx_L3_first_run;
+    case 1: goto __pyx_L8_resume_from_yield;
+    default: /* CPython raises the right error here */
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __pyx_L3_first_run:;
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_links)) { __Pyx_RaiseClosureNameError("links"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  if (PyList_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_links) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_links)) {
+    __pyx_t_1 = __pyx_cur_scope->__pyx_outer_scope->__pyx_v_links; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
+    __pyx_t_3 = NULL;
+  } else {
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_links); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_3(__pyx_t_1);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    if ((likely(PyTuple_CheckExact(__pyx_t_4))) || (PyList_CheckExact(__pyx_t_4))) {
+      PyObject* sequence = __pyx_t_4;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      Py_ssize_t size = Py_SIZE(sequence);
+      #else
+      Py_ssize_t size = PySequence_Size(sequence);
+      #endif
+      if (unlikely(size != 2)) {
+        if (size > 2) __Pyx_RaiseTooManyValuesError(2);
+        else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      }
+      #if CYTHON_COMPILING_IN_CPYTHON
+      if (likely(PyTuple_CheckExact(sequence))) {
+        __pyx_t_5 = PyTuple_GET_ITEM(sequence, 0); 
+        __pyx_t_6 = PyTuple_GET_ITEM(sequence, 1); 
+      } else {
+        __pyx_t_5 = PyList_GET_ITEM(sequence, 0); 
+        __pyx_t_6 = PyList_GET_ITEM(sequence, 1); 
+      }
+      __Pyx_INCREF(__pyx_t_5);
+      __Pyx_INCREF(__pyx_t_6);
+      #else
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    } else
+    {
+      Py_ssize_t index = -1;
+      __pyx_t_7 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __Pyx_GOTREF(__pyx_t_7);
+      __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+      __pyx_t_8 = Py_TYPE(__pyx_t_7)->tp_iternext;
+      index = 0; __pyx_t_5 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_5)) goto __pyx_L6_unpacking_failed;
+      __Pyx_GOTREF(__pyx_t_5);
+      index = 1; __pyx_t_6 = __pyx_t_8(__pyx_t_7); if (unlikely(!__pyx_t_6)) goto __pyx_L6_unpacking_failed;
+      __Pyx_GOTREF(__pyx_t_6);
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_8(__pyx_t_7), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = NULL;
+      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+      goto __pyx_L7_unpacking_done;
+      __pyx_L6_unpacking_failed:;
+      __Pyx_DECREF(__pyx_t_7); __pyx_t_7 = 0;
+      __pyx_t_8 = NULL;
+      if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_L7_unpacking_done:;
+    }
+    __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_i);
+    __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_i);
+    __Pyx_GIVEREF(__pyx_t_5);
+    __pyx_cur_scope->__pyx_v_i = __pyx_t_5;
+    __pyx_t_5 = 0;
+    __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_j);
+    __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_j);
+    __Pyx_GIVEREF(__pyx_t_6);
+    __pyx_cur_scope->__pyx_v_j = __pyx_t_6;
+    __pyx_t_6 = 0;
+    __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_137), __pyx_n_s__format); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_4);
+    __pyx_t_6 = PyTuple_New(2); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_6);
+    __Pyx_INCREF(__pyx_cur_scope->__pyx_v_i);
+    PyTuple_SET_ITEM(__pyx_t_6, 0, __pyx_cur_scope->__pyx_v_i);
+    __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_i);
+    __Pyx_INCREF(__pyx_cur_scope->__pyx_v_j);
+    PyTuple_SET_ITEM(__pyx_t_6, 1, __pyx_cur_scope->__pyx_v_j);
+    __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_j);
+    __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_5);
+    __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+    __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
+    __pyx_r = __pyx_t_5;
+    __pyx_t_5 = 0;
+    __Pyx_XGIVEREF(__pyx_t_1);
+    __pyx_cur_scope->__pyx_t_0 = __pyx_t_1;
+    __pyx_cur_scope->__pyx_t_1 = __pyx_t_2;
+    __pyx_cur_scope->__pyx_t_2 = __pyx_t_3;
+    __Pyx_XGIVEREF(__pyx_r);
+    __Pyx_RefNannyFinishContext();
+    /* return from generator, yielding value */
+    __pyx_generator->resume_label = 1;
+    return __pyx_r;
+    __pyx_L8_resume_from_yield:;
+    __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
+    __pyx_cur_scope->__pyx_t_0 = 0;
+    __Pyx_XGOTREF(__pyx_t_1);
+    __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
+    __pyx_t_3 = __pyx_cur_scope->__pyx_t_2;
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  PyErr_SetNone(PyExc_StopIteration);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_XDECREF(__pyx_t_5);
+  __Pyx_XDECREF(__pyx_t_6);
+  __Pyx_XDECREF(__pyx_t_7);
+  __Pyx_AddTraceback("genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+}
+static PyObject *__pyx_gb_3_sa_8fmt_rule_5generator15(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2103
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),             # <<<<<<<<<<<<<<
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ *                                                 a_str)
+ */
+
+static PyObject *__pyx_pf_3_sa_8fmt_rule_3genexpr(PyObject *__pyx_self) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *__pyx_cur_scope;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("genexpr", 0);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_23_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_23_genexpr, __pyx_empty_tuple, NULL);
+  if (unlikely(!__pyx_cur_scope)) {
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __Pyx_GOTREF(__pyx_cur_scope);
+  __pyx_cur_scope->__pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *) __pyx_self;
+  __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_outer_scope));
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
+  {
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_8fmt_rule_5generator15, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_cur_scope);
+    __Pyx_RefNannyFinishContext();
+    return (PyObject *) gen;
+  }
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_AddTraceback("_sa.fmt_rule.genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_DECREF(((PyObject *)__pyx_cur_scope));
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+static PyObject *__pyx_gb_3_sa_8fmt_rule_5generator15(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+{
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)__pyx_generator->closure);
+  PyObject *__pyx_r = NULL;
+  PyObject *__pyx_t_1 = NULL;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  PyObject *__pyx_t_4 = NULL;
+  int __pyx_t_5;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("None", 0);
+  switch (__pyx_generator->resume_label) {
+    case 0: goto __pyx_L3_first_run;
+    case 1: goto __pyx_L6_resume_from_yield;
+    default: /* CPython raises the right error here */
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __pyx_L3_first_run:;
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_f_sym)) { __Pyx_RaiseClosureNameError("f_sym"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  if (PyList_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_f_sym) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_f_sym)) {
+    __pyx_t_1 = __pyx_cur_scope->__pyx_outer_scope->__pyx_v_f_sym; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
+    __pyx_t_3 = NULL;
+  } else {
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_f_sym); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_3(__pyx_t_1);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_sym);
+    __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_sym);
+    __Pyx_GIVEREF(__pyx_t_4);
+    __pyx_cur_scope->__pyx_v_sym = __pyx_t_4;
+    __pyx_t_4 = 0;
+    __pyx_t_5 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_sym); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(((PyObject *)__pyx_t_4));
+    __pyx_r = ((PyObject *)__pyx_t_4);
+    __pyx_t_4 = 0;
+    __Pyx_XGIVEREF(__pyx_t_1);
+    __pyx_cur_scope->__pyx_t_0 = __pyx_t_1;
+    __pyx_cur_scope->__pyx_t_1 = __pyx_t_2;
+    __pyx_cur_scope->__pyx_t_2 = __pyx_t_3;
+    __Pyx_XGIVEREF(__pyx_r);
+    __Pyx_RefNannyFinishContext();
+    /* return from generator, yielding value */
+    __pyx_generator->resume_label = 1;
+    return __pyx_r;
+    __pyx_L6_resume_from_yield:;
+    __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
+    __pyx_cur_scope->__pyx_t_0 = 0;
+    __Pyx_XGOTREF(__pyx_t_1);
+    __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
+    __pyx_t_3 = __pyx_cur_scope->__pyx_t_2;
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  PyErr_SetNone(PyExc_StopIteration);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_AddTraceback("genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+}
+static PyObject *__pyx_gb_3_sa_8fmt_rule_8generator16(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2104
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),             # <<<<<<<<<<<<<<
+ *                                                 a_str)
+ * 
+ */
+
+static PyObject *__pyx_pf_3_sa_8fmt_rule_6genexpr(PyObject *__pyx_self) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *__pyx_cur_scope;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("genexpr", 0);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_24_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_24_genexpr, __pyx_empty_tuple, NULL);
+  if (unlikely(!__pyx_cur_scope)) {
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __Pyx_GOTREF(__pyx_cur_scope);
+  __pyx_cur_scope->__pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *) __pyx_self;
+  __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_outer_scope));
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
+  {
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_8fmt_rule_8generator16, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_DECREF(__pyx_cur_scope);
+    __Pyx_RefNannyFinishContext();
+    return (PyObject *) gen;
+  }
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_AddTraceback("_sa.fmt_rule.genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_DECREF(((PyObject *)__pyx_cur_scope));
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+static PyObject *__pyx_gb_3_sa_8fmt_rule_8generator16(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+{
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)__pyx_generator->closure);
+  PyObject *__pyx_r = NULL;
+  PyObject *__pyx_t_1 = NULL;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  PyObject *__pyx_t_4 = NULL;
+  int __pyx_t_5;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("None", 0);
+  switch (__pyx_generator->resume_label) {
+    case 0: goto __pyx_L3_first_run;
+    case 1: goto __pyx_L6_resume_from_yield;
+    default: /* CPython raises the right error here */
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __pyx_L3_first_run:;
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_e_sym)) { __Pyx_RaiseClosureNameError("e_sym"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  if (PyList_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_e_sym) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_e_sym)) {
+    __pyx_t_1 = __pyx_cur_scope->__pyx_outer_scope->__pyx_v_e_sym; __Pyx_INCREF(__pyx_t_1); __pyx_t_2 = 0;
+    __pyx_t_3 = NULL;
+  } else {
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_e_sym); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_1);
+    __pyx_t_3 = Py_TYPE(__pyx_t_1)->tp_iternext;
+  }
+  for (;;) {
+    if (!__pyx_t_3 && PyList_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else if (!__pyx_t_3 && PyTuple_CheckExact(__pyx_t_1)) {
+      if (__pyx_t_2 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #else
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      #endif
+    } else {
+      __pyx_t_4 = __pyx_t_3(__pyx_t_1);
+      if (unlikely(!__pyx_t_4)) {
+        if (PyErr_Occurred()) {
+          if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
+          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        }
+        break;
+      }
+      __Pyx_GOTREF(__pyx_t_4);
+    }
+    __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_sym);
+    __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_sym);
+    __Pyx_GIVEREF(__pyx_t_4);
+    __pyx_cur_scope->__pyx_v_sym = __pyx_t_4;
+    __pyx_t_4 = 0;
+    __pyx_t_5 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_sym); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(((PyObject *)__pyx_t_4));
+    __pyx_r = ((PyObject *)__pyx_t_4);
+    __pyx_t_4 = 0;
+    __Pyx_XGIVEREF(__pyx_t_1);
+    __pyx_cur_scope->__pyx_t_0 = __pyx_t_1;
+    __pyx_cur_scope->__pyx_t_1 = __pyx_t_2;
+    __pyx_cur_scope->__pyx_t_2 = __pyx_t_3;
+    __Pyx_XGIVEREF(__pyx_r);
+    __Pyx_RefNannyFinishContext();
+    /* return from generator, yielding value */
+    __pyx_generator->resume_label = 1;
+    return __pyx_r;
+    __pyx_L6_resume_from_yield:;
+    __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
+    __pyx_cur_scope->__pyx_t_0 = 0;
+    __Pyx_XGOTREF(__pyx_t_1);
+    __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
+    __pyx_t_3 = __pyx_cur_scope->__pyx_t_2;
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  }
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  PyErr_SetNone(PyExc_StopIteration);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_AddTraceback("genexpr", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_L0:;
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
+  __Pyx_RefNannyFinishContext();
+  return NULL;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2101
+ *         k += 1
+ * 
+ * def fmt_rule(f_sym, e_sym, links):             # <<<<<<<<<<<<<<
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ */
+
+static PyObject *__pyx_pf_3_sa_16fmt_rule(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_f_sym, PyObject *__pyx_v_e_sym, PyObject *__pyx_v_links) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *__pyx_cur_scope;
+  PyObject *__pyx_v_a_str = NULL;
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_3 = NULL;
+  PyObject *__pyx_t_4 = NULL;
+  PyObject *__pyx_t_5 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("fmt_rule", 0);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)__pyx_ptype_3_sa___pyx_scope_struct_21_fmt_rule->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_21_fmt_rule, __pyx_empty_tuple, NULL);
+  if (unlikely(!__pyx_cur_scope)) {
+    __Pyx_RefNannyFinishContext();
+    return NULL;
+  }
+  __Pyx_GOTREF(__pyx_cur_scope);
+  __pyx_cur_scope->__pyx_v_f_sym = __pyx_v_f_sym;
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_f_sym);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_f_sym);
+  __pyx_cur_scope->__pyx_v_e_sym = __pyx_v_e_sym;
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e_sym);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_e_sym);
+  __pyx_cur_scope->__pyx_v_links = __pyx_v_links;
+  __Pyx_INCREF(__pyx_cur_scope->__pyx_v_links);
+  __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_links);
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2102
+ * 
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ */
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_67), __pyx_n_s__join); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_2 = __pyx_pf_3_sa_8fmt_rule_genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_2);
+  __Pyx_GIVEREF(__pyx_t_2);
+  __pyx_t_2 = 0;
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+  __pyx_v_a_str = __pyx_t_2;
+  __pyx_t_2 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2103
+ * def fmt_rule(f_sym, e_sym, links):
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),             # <<<<<<<<<<<<<<
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ *                                                 a_str)
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_2 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_138), __pyx_n_s__format); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_67), __pyx_n_s__join); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_1 = __pyx_pf_3_sa_8fmt_rule_3genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __Pyx_INCREF(__pyx_v_alignment);
-  PyTuple_SET_ITEM(__pyx_t_1, 0, __pyx_v_alignment);
-  __Pyx_GIVEREF(__pyx_v_alignment);
-  __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
+  PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  __pyx_t_1 = 0;
+  __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2104
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),             # <<<<<<<<<<<<<<
+ *                                                 a_str)
+ * 
+ */
+  __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_kp_s_67), __pyx_n_s__join); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
+  __pyx_t_3 = __pyx_pf_3_sa_8fmt_rule_6genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_3);
+  __Pyx_GIVEREF(__pyx_t_3);
+  __pyx_t_3 = 0;
+  __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2105
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ *                                                 ' '.join(sym_tostring(sym) for sym in e_sym),
+ *                                                 a_str)             # <<<<<<<<<<<<<<
+ * 
+ *         #(f, e, count, als) = e
+ */
+  __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_1);
+  __Pyx_GIVEREF(__pyx_t_1);
+  PyTuple_SET_ITEM(__pyx_t_5, 1, __pyx_t_3);
+  __Pyx_GIVEREF(__pyx_t_3);
+  __Pyx_INCREF(__pyx_v_a_str);
+  PyTuple_SET_ITEM(__pyx_t_5, 2, __pyx_v_a_str);
+  __Pyx_GIVEREF(__pyx_v_a_str);
+  __pyx_t_1 = 0;
+  __pyx_t_3 = 0;
+  __pyx_t_3 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_3);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
+  __pyx_r = __pyx_t_3;
+  __pyx_t_3 = 0;
+  goto __pyx_L0;
 
   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
   goto __pyx_L0;
@@ -56407,9 +63174,12 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(CYTHON_U
   __Pyx_XDECREF(__pyx_t_2);
   __Pyx_XDECREF(__pyx_t_3);
   __Pyx_XDECREF(__pyx_t_4);
-  __Pyx_AddTraceback("_sa.HieroCachingRuleFactory.add_instance", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __Pyx_XDECREF(__pyx_t_5);
+  __Pyx_AddTraceback("_sa.fmt_rule", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
+  __Pyx_XDECREF(__pyx_v_a_str);
+  __Pyx_DECREF(((PyObject *)__pyx_cur_scope));
   __Pyx_XGIVEREF(__pyx_r);
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
@@ -56653,14 +63423,14 @@ static PyObject *__pyx_pw_3_sa_13FeatureVector_5__iter__(PyObject *__pyx_v_self)
  */
 
 static PyObject *__pyx_pf_3_sa_13FeatureVector_4__iter__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *__pyx_cur_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *__pyx_cur_scope;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__iter__", 0);
-  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)__pyx_ptype_3_sa___pyx_scope_struct_20___iter__->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_20___iter__, __pyx_empty_tuple, NULL);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)__pyx_ptype_3_sa___pyx_scope_struct_25___iter__->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_25___iter__, __pyx_empty_tuple, NULL);
   if (unlikely(!__pyx_cur_scope)) {
     __Pyx_RefNannyFinishContext();
     return NULL;
@@ -56690,7 +63460,7 @@ static PyObject *__pyx_pf_3_sa_13FeatureVector_4__iter__(struct __pyx_obj_3_sa_F
 
 static PyObject *__pyx_gb_3_sa_13FeatureVector_6generator5(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)__pyx_generator->closure);
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)__pyx_generator->closure);
   PyObject *__pyx_r = NULL;
   int __pyx_t_1;
   unsigned int __pyx_t_2;
@@ -56783,7 +63553,7 @@ static PyObject *__pyx_pw_3_sa_13FeatureVector_8__str__(PyObject *__pyx_v_self)
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
-static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator14(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator17(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
 /* "/home/m/workspace/cdec/python/src/sa/features.pxi":21
  * 
@@ -56794,24 +63564,24 @@ static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator14(__pyx_Gener
  */
 
 static PyObject *__pyx_pf_3_sa_13FeatureVector_7__str___genexpr(PyObject *__pyx_self) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *__pyx_cur_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *__pyx_cur_scope;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   int __pyx_lineno = 0;
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("genexpr", 0);
-  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr, __pyx_empty_tuple, NULL);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_27_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_27_genexpr, __pyx_empty_tuple, NULL);
   if (unlikely(!__pyx_cur_scope)) {
     __Pyx_RefNannyFinishContext();
     return NULL;
   }
   __Pyx_GOTREF(__pyx_cur_scope);
-  __pyx_cur_scope->__pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *) __pyx_self;
+  __pyx_cur_scope->__pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *) __pyx_self;
   __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_outer_scope));
   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
   {
-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_13FeatureVector_7__str___2generator14, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_13FeatureVector_7__str___2generator17, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_cur_scope);
     __Pyx_RefNannyFinishContext();
     return (PyObject *) gen;
@@ -56829,9 +63599,9 @@ static PyObject *__pyx_pf_3_sa_13FeatureVector_7__str___genexpr(PyObject *__pyx_
   return __pyx_r;
 }
 
-static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator14(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator17(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)__pyx_generator->closure);
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)__pyx_generator->closure);
   PyObject *__pyx_r = NULL;
   PyObject *__pyx_t_1 = NULL;
   Py_ssize_t __pyx_t_2;
@@ -56888,7 +63658,7 @@ static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator14(__pyx_Gener
     __Pyx_GIVEREF(__pyx_t_4);
     __pyx_cur_scope->__pyx_v_feat = __pyx_t_4;
     __pyx_t_4 = 0;
-    __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_136), __pyx_cur_scope->__pyx_v_feat); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_139), __pyx_cur_scope->__pyx_v_feat); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_4));
     __pyx_r = ((PyObject *)__pyx_t_4);
     __pyx_t_4 = 0;
@@ -56933,7 +63703,7 @@ static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator14(__pyx_Gener
  */
 
 static PyObject *__pyx_pf_3_sa_13FeatureVector_7__str__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *__pyx_cur_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *__pyx_cur_scope;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
   PyObject *__pyx_t_1 = NULL;
@@ -56943,7 +63713,7 @@ static PyObject *__pyx_pf_3_sa_13FeatureVector_7__str__(struct __pyx_obj_3_sa_Fe
   const char *__pyx_filename = NULL;
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("__str__", 0);
-  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)__pyx_ptype_3_sa___pyx_scope_struct_21___str__->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_21___str__, __pyx_empty_tuple, NULL);
+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)__pyx_ptype_3_sa___pyx_scope_struct_26___str__->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_26___str__, __pyx_empty_tuple, NULL);
   if (unlikely(!__pyx_cur_scope)) {
     __Pyx_RefNannyFinishContext();
     return NULL;
@@ -62234,6 +69004,13 @@ static PyObject *__pyx_tp_new_3_sa_HieroCachingRuleFactory(PyTypeObject *t, PyOb
   p->fid2symid = ((struct __pyx_obj_3_sa_IntList *)Py_None); Py_INCREF(Py_None);
   p->findexes = ((struct __pyx_obj_3_sa_IntList *)Py_None); Py_INCREF(Py_None);
   p->findexes1 = ((struct __pyx_obj_3_sa_IntList *)Py_None); Py_INCREF(Py_None);
+  p->phrases_f = Py_None; Py_INCREF(Py_None);
+  p->phrases_e = Py_None; Py_INCREF(Py_None);
+  p->phrases_fe = Py_None; Py_INCREF(Py_None);
+  p->phrases_al = Py_None; Py_INCREF(Py_None);
+  p->bilex_f = Py_None; Py_INCREF(Py_None);
+  p->bilex_e = Py_None; Py_INCREF(Py_None);
+  p->bilex_fe = Py_None; Py_INCREF(Py_None);
   if (__pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(o, a, k) < 0) {
     Py_DECREF(o); o = 0;
   }
@@ -62258,6 +69035,13 @@ static void __pyx_tp_dealloc_3_sa_HieroCachingRuleFactory(PyObject *o) {
   Py_CLEAR(p->fid2symid);
   Py_CLEAR(p->findexes);
   Py_CLEAR(p->findexes1);
+  Py_CLEAR(p->phrases_f);
+  Py_CLEAR(p->phrases_e);
+  Py_CLEAR(p->phrases_fe);
+  Py_CLEAR(p->phrases_al);
+  Py_CLEAR(p->bilex_f);
+  Py_CLEAR(p->bilex_e);
+  Py_CLEAR(p->bilex_fe);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
@@ -62312,6 +69096,27 @@ static int __pyx_tp_traverse_3_sa_HieroCachingRuleFactory(PyObject *o, visitproc
   if (p->findexes1) {
     e = (*v)(((PyObject*)p->findexes1), a); if (e) return e;
   }
+  if (p->phrases_f) {
+    e = (*v)(p->phrases_f, a); if (e) return e;
+  }
+  if (p->phrases_e) {
+    e = (*v)(p->phrases_e, a); if (e) return e;
+  }
+  if (p->phrases_fe) {
+    e = (*v)(p->phrases_fe, a); if (e) return e;
+  }
+  if (p->phrases_al) {
+    e = (*v)(p->phrases_al, a); if (e) return e;
+  }
+  if (p->bilex_f) {
+    e = (*v)(p->bilex_f, a); if (e) return e;
+  }
+  if (p->bilex_e) {
+    e = (*v)(p->bilex_e, a); if (e) return e;
+  }
+  if (p->bilex_fe) {
+    e = (*v)(p->bilex_fe, a); if (e) return e;
+  }
   return 0;
 }
 
@@ -62366,6 +69171,27 @@ static int __pyx_tp_clear_3_sa_HieroCachingRuleFactory(PyObject *o) {
   tmp = ((PyObject*)p->findexes1);
   p->findexes1 = ((struct __pyx_obj_3_sa_IntList *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->phrases_f);
+  p->phrases_f = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->phrases_e);
+  p->phrases_e = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->phrases_fe);
+  p->phrases_fe = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->phrases_al);
+  p->phrases_al = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->bilex_f);
+  p->bilex_f = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->bilex_e);
+  p->bilex_e = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->bilex_fe);
+  p->bilex_fe = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   return 0;
 }
 
@@ -62382,6 +69208,9 @@ static PyMethodDef __pyx_methods_3_sa_HieroCachingRuleFactory[] = {
   {__Pyx_NAMESTR("get_next_states"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_21get_next_states, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("input"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_23input, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(__pyx_doc_3_sa_23HieroCachingRuleFactory_22input)},
   {__Pyx_NAMESTR("add_instance"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_26add_instance, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("aggr_bilex"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_28aggr_bilex, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("form_rules"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_30form_rules, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("dump_online_stats"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_32dump_online_stats, METH_NOARGS, __Pyx_DOCSTR(0)},
   {0, 0, 0, 0}
 };
 
@@ -67192,44 +74021,108 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_19_input = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o);
+  p->__pyx_v_al = 0;
+  p->__pyx_v_al_span = 0;
+  p->__pyx_v_cover = 0;
+  p->__pyx_v_e_words = 0;
+  p->__pyx_v_extract = 0;
+  p->__pyx_v_f_len = 0;
+  p->__pyx_v_f_words = 0;
+  p->__pyx_v_rules = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20___iter__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+  Py_CLEAR(p->__pyx_v_al);
+  Py_CLEAR(p->__pyx_v_al_span);
+  Py_CLEAR(p->__pyx_v_cover);
+  Py_CLEAR(p->__pyx_v_e_words);
+  Py_CLEAR(p->__pyx_v_extract);
+  Py_CLEAR(p->__pyx_v_f_len);
+  Py_CLEAR(p->__pyx_v_f_words);
+  Py_CLEAR(p->__pyx_v_rules);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+  if (p->__pyx_v_al) {
+    e = (*v)(p->__pyx_v_al, a); if (e) return e;
+  }
+  if (p->__pyx_v_al_span) {
+    e = (*v)(p->__pyx_v_al_span, a); if (e) return e;
+  }
+  if (p->__pyx_v_cover) {
+    e = (*v)(p->__pyx_v_cover, a); if (e) return e;
+  }
+  if (p->__pyx_v_e_words) {
+    e = (*v)(p->__pyx_v_e_words, a); if (e) return e;
+  }
+  if (p->__pyx_v_extract) {
+    e = (*v)(p->__pyx_v_extract, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_len) {
+    e = (*v)(p->__pyx_v_f_len, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_words) {
+    e = (*v)(p->__pyx_v_f_words, a); if (e) return e;
+  }
+  if (p->__pyx_v_rules) {
+    e = (*v)(p->__pyx_v_rules, a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_20___iter__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__ *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
   PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_al);
+  p->__pyx_v_al = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_al_span);
+  p->__pyx_v_al_span = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_cover);
+  p->__pyx_v_cover = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_e_words);
+  p->__pyx_v_e_words = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_extract);
+  p->__pyx_v_extract = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_len);
+  p->__pyx_v_f_len = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_words);
+  p->__pyx_v_f_words = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_rules);
+  p->__pyx_v_rules = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_v_self = ((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_20___iter__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_20_add_instance[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_add_instance = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -67287,7 +74180,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_add_instance = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -67300,13 +74193,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20_add_instance = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_add_instance = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -67327,12 +74220,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20___iter__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_20___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_20___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_20_add_instance"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -67342,24 +74235,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20___iter__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_20___iter__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_20___iter__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_20___iter__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_20_add_instance, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_20_add_instance, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_20_add_instance, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_20___iter__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_20_add_instance, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_20___iter__, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_20___iter__, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_20___iter__, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_20_add_instance, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -67369,7 +74262,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_20___iter__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -67383,44 +74276,60 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_21___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_21_fmt_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)o);
-  p->__pyx_v_self = 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)o);
+  p->__pyx_v_e_sym = 0;
+  p->__pyx_v_f_sym = 0;
+  p->__pyx_v_links = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21___str__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)o;
-  Py_CLEAR(p->__pyx_v_self);
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)o;
+  Py_CLEAR(p->__pyx_v_e_sym);
+  Py_CLEAR(p->__pyx_v_f_sym);
+  Py_CLEAR(p->__pyx_v_links);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21___str__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_fmt_rule(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)o;
-  if (p->__pyx_v_self) {
-    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)o;
+  if (p->__pyx_v_e_sym) {
+    e = (*v)(p->__pyx_v_e_sym, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_sym) {
+    e = (*v)(p->__pyx_v_f_sym, a); if (e) return e;
+  }
+  if (p->__pyx_v_links) {
+    e = (*v)(p->__pyx_v_links, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_21___str__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)o;
   PyObject* tmp;
-  tmp = ((PyObject*)p->__pyx_v_self);
-  p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_e_sym);
+  p->__pyx_v_e_sym = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_sym);
+  p->__pyx_v_f_sym = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_links);
+  p->__pyx_v_links = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21___str__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21_fmt_rule[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21___str__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_fmt_rule = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -67478,7 +74387,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21___str__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21___str__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_fmt_rule = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -67491,13 +74400,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21___str__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21___str__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21_fmt_rule = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21___str__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_fmt_rule = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -67518,12 +74427,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21___str__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21___str__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_fmt_rule = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21___str__"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21___str__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21_fmt_rule"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21___str__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_fmt_rule, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -67533,24 +74442,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21___str__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_21___str__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_21___str__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_21___str__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_21_fmt_rule, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_21_fmt_rule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_21_fmt_rule, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_21___str__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_21_fmt_rule, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_21___str__, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_21___str__, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_21_fmt_rule, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_21_fmt_rule, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_21___str__, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_21_fmt_rule, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -67560,7 +74469,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21___str__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_21___str__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_21_fmt_rule, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -67580,7 +74489,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t
   if (!o) return 0;
   p = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o);
   p->__pyx_outer_scope = 0;
-  p->__pyx_v_feat = 0;
+  p->__pyx_v_i = 0;
+  p->__pyx_v_j = 0;
   p->__pyx_t_0 = 0;
   return o;
 }
@@ -67588,7 +74498,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t
 static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
   Py_CLEAR(p->__pyx_outer_scope);
-  Py_CLEAR(p->__pyx_v_feat);
+  Py_CLEAR(p->__pyx_v_i);
+  Py_CLEAR(p->__pyx_v_j);
   Py_CLEAR(p->__pyx_t_0);
   (*Py_TYPE(o)->tp_free)(o);
 }
@@ -67599,8 +74510,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr(PyObject *o, vis
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
-  if (p->__pyx_v_feat) {
-    e = (*v)(p->__pyx_v_feat, a); if (e) return e;
+  if (p->__pyx_v_i) {
+    e = (*v)(p->__pyx_v_i, a); if (e) return e;
+  }
+  if (p->__pyx_v_j) {
+    e = (*v)(p->__pyx_v_j, a); if (e) return e;
   }
   if (p->__pyx_t_0) {
     e = (*v)(p->__pyx_t_0, a); if (e) return e;
@@ -67612,10 +74526,13 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_21___str__ *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_feat);
-  p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
+  tmp = ((PyObject*)p->__pyx_v_i);
+  p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_j);
+  p->__pyx_v_j = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_t_0);
   p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
@@ -67781,6 +74698,1009 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_23_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_sym = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_sym);
+  Py_CLEAR(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_sym) {
+    e = (*v)(p->__pyx_v_sym, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_sym);
+  p->__pyx_v_sym = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_23_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_genexpr = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_genexpr = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_23_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_genexpr = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_23_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_genexpr, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_23_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_23_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_23_genexpr, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_23_genexpr, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_23_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_23_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_23_genexpr, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_23_genexpr, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_24_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_sym = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_sym);
+  Py_CLEAR(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_sym) {
+    e = (*v)(p->__pyx_v_sym, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_fmt_rule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_sym);
+  p->__pyx_v_sym = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_24_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_24_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_genexpr, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_24_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_24_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_24_genexpr, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_24_genexpr, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_24_genexpr, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_24_genexpr, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_25___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+  Py_CLEAR(p->__pyx_v_self);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_25___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_25___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25___iter__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25___iter__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_25___iter__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25___iter__ = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_25___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_25___iter__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_25___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_25___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_25___iter__, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_25___iter__, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_25___iter__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_25___iter__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_25___iter__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_26___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+  Py_CLEAR(p->__pyx_v_self);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_26___str__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_26___str__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26___str__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26___str__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_26___str__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26___str__ = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_26___str__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_26___str__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_26___str__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_26___str__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_26___str__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_26___str__, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_26___str__, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_26___str__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_26___str__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_26___str__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_27_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_feat = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_feat);
+  Py_CLEAR(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_feat) {
+    e = (*v)(p->__pyx_v_feat, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_feat);
+  p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_27_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27_genexpr = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27_genexpr = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_27_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27_genexpr = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_27_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_27_genexpr, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_27_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_27_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_27_genexpr, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_27_genexpr, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_27_genexpr, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_27_genexpr, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
 static PyMethodDef __pyx_methods[] = {
   {0, 0, 0, 0}
 };
@@ -67832,12 +75752,14 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_131, __pyx_k_131, sizeof(__pyx_k_131), 0, 0, 1, 0},
   {&__pyx_kp_s_132, __pyx_k_132, sizeof(__pyx_k_132), 0, 0, 1, 0},
   {&__pyx_kp_s_133, __pyx_k_133, sizeof(__pyx_k_133), 0, 0, 1, 0},
-  {&__pyx_kp_s_134, __pyx_k_134, sizeof(__pyx_k_134), 0, 0, 1, 0},
   {&__pyx_kp_s_136, __pyx_k_136, sizeof(__pyx_k_136), 0, 0, 1, 0},
+  {&__pyx_kp_s_137, __pyx_k_137, sizeof(__pyx_k_137), 0, 0, 1, 0},
+  {&__pyx_kp_s_138, __pyx_k_138, sizeof(__pyx_k_138), 0, 0, 1, 0},
   {&__pyx_kp_s_139, __pyx_k_139, sizeof(__pyx_k_139), 0, 0, 1, 0},
   {&__pyx_kp_s_14, __pyx_k_14, sizeof(__pyx_k_14), 0, 0, 1, 0},
-  {&__pyx_kp_s_140, __pyx_k_140, sizeof(__pyx_k_140), 0, 0, 1, 0},
-  {&__pyx_kp_s_144, __pyx_k_144, sizeof(__pyx_k_144), 0, 0, 1, 0},
+  {&__pyx_kp_s_142, __pyx_k_142, sizeof(__pyx_k_142), 0, 0, 1, 0},
+  {&__pyx_kp_s_143, __pyx_k_143, sizeof(__pyx_k_143), 0, 0, 1, 0},
+  {&__pyx_kp_s_147, __pyx_k_147, sizeof(__pyx_k_147), 0, 0, 1, 0},
   {&__pyx_kp_s_18, __pyx_k_18, sizeof(__pyx_k_18), 0, 0, 1, 0},
   {&__pyx_kp_s_2, __pyx_k_2, sizeof(__pyx_k_2), 0, 0, 1, 0},
   {&__pyx_kp_s_21, __pyx_k_21, sizeof(__pyx_k_21), 0, 0, 1, 0},
@@ -67910,7 +75832,11 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s___columns, __pyx_k___columns, sizeof(__pyx_k___columns), 0, 0, 1, 1},
   {&__pyx_n_s___doquicksort, __pyx_k___doquicksort, sizeof(__pyx_k___doquicksort), 0, 0, 1, 1},
   {&__pyx_n_s___sa, __pyx_k___sa, sizeof(__pyx_k___sa), 0, 0, 1, 1},
+  {&__pyx_n_s__a_str, __pyx_k__a_str, sizeof(__pyx_k__a_str), 0, 0, 1, 1},
+  {&__pyx_n_s__add, __pyx_k__add, sizeof(__pyx_k__add), 0, 0, 1, 1},
   {&__pyx_n_s__advance, __pyx_k__advance, sizeof(__pyx_k__advance), 0, 0, 1, 1},
+  {&__pyx_n_s__aggr_bilex, __pyx_k__aggr_bilex, sizeof(__pyx_k__aggr_bilex), 0, 0, 1, 1},
+  {&__pyx_n_s__al, __pyx_k__al, sizeof(__pyx_k__al), 0, 0, 1, 1},
   {&__pyx_n_s__alignment, __pyx_k__alignment, sizeof(__pyx_k__alignment), 0, 0, 1, 1},
   {&__pyx_n_s__alignments, __pyx_k__alignments, sizeof(__pyx_k__alignments), 0, 0, 1, 1},
   {&__pyx_n_s__alphabet_size, __pyx_k__alphabet_size, sizeof(__pyx_k__alphabet_size), 0, 0, 1, 1},
@@ -67926,6 +75852,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__col, __pyx_k__col, sizeof(__pyx_k__col), 0, 0, 1, 1},
   {&__pyx_n_s__collect, __pyx_k__collect, sizeof(__pyx_k__collect), 0, 0, 1, 1},
   {&__pyx_n_s__collections, __pyx_k__collections, sizeof(__pyx_k__collections), 0, 0, 1, 1},
+  {&__pyx_n_s__collision, __pyx_k__collision, sizeof(__pyx_k__collision), 0, 0, 1, 1},
   {&__pyx_n_s__curr_idx, __pyx_k__curr_idx, sizeof(__pyx_k__curr_idx), 0, 0, 1, 1},
   {&__pyx_n_s__debug, __pyx_k__debug, sizeof(__pyx_k__debug), 0, 0, 1, 1},
   {&__pyx_n_s__decode_lattice, __pyx_k__decode_lattice, sizeof(__pyx_k__decode_lattice), 0, 0, 1, 1},
@@ -67934,6 +75861,10 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__defaultdict, __pyx_k__defaultdict, sizeof(__pyx_k__defaultdict), 0, 0, 1, 1},
   {&__pyx_n_s__dist, __pyx_k__dist, sizeof(__pyx_k__dist), 0, 0, 1, 1},
   {&__pyx_n_s__e, __pyx_k__e, sizeof(__pyx_k__e), 0, 0, 1, 1},
+  {&__pyx_n_s__e_i, __pyx_k__e_i, sizeof(__pyx_k__e_i), 0, 0, 1, 1},
+  {&__pyx_n_s__e_j, __pyx_k__e_j, sizeof(__pyx_k__e_j), 0, 0, 1, 1},
+  {&__pyx_n_s__e_span, __pyx_k__e_span, sizeof(__pyx_k__e_span), 0, 0, 1, 1},
+  {&__pyx_n_s__e_sym, __pyx_k__e_sym, sizeof(__pyx_k__e_sym), 0, 0, 1, 1},
   {&__pyx_n_s__e_text, __pyx_k__e_text, sizeof(__pyx_k__e_text), 0, 0, 1, 1},
   {&__pyx_n_s__e_words, __pyx_k__e_words, sizeof(__pyx_k__e_words), 0, 0, 1, 1},
   {&__pyx_n_s__earray, __pyx_k__earray, sizeof(__pyx_k__earray), 0, 0, 1, 1},
@@ -67945,11 +75876,19 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__eword, __pyx_k__eword, sizeof(__pyx_k__eword), 0, 0, 1, 1},
   {&__pyx_n_s__extend, __pyx_k__extend, sizeof(__pyx_k__extend), 0, 0, 1, 1},
   {&__pyx_n_s__extended, __pyx_k__extended, sizeof(__pyx_k__extended), 0, 0, 1, 1},
+  {&__pyx_n_s__extract, __pyx_k__extract, sizeof(__pyx_k__extract), 0, 0, 1, 1},
   {&__pyx_n_s__f, __pyx_k__f, sizeof(__pyx_k__f), 0, 0, 1, 1},
+  {&__pyx_n_s__f_i, __pyx_k__f_i, sizeof(__pyx_k__f_i), 0, 0, 1, 1},
+  {&__pyx_n_s__f_j, __pyx_k__f_j, sizeof(__pyx_k__f_j), 0, 0, 1, 1},
+  {&__pyx_n_s__f_span, __pyx_k__f_span, sizeof(__pyx_k__f_span), 0, 0, 1, 1},
+  {&__pyx_n_s__f_sym, __pyx_k__f_sym, sizeof(__pyx_k__f_sym), 0, 0, 1, 1},
   {&__pyx_n_s__f_text, __pyx_k__f_text, sizeof(__pyx_k__f_text), 0, 0, 1, 1},
   {&__pyx_n_s__f_words, __pyx_k__f_words, sizeof(__pyx_k__f_words), 0, 0, 1, 1},
   {&__pyx_n_s__fcount, __pyx_k__fcount, sizeof(__pyx_k__fcount), 0, 0, 1, 1},
   {&__pyx_n_s__filename, __pyx_k__filename, sizeof(__pyx_k__filename), 0, 0, 1, 1},
+  {&__pyx_n_s__fmt_rule, __pyx_k__fmt_rule, sizeof(__pyx_k__fmt_rule), 0, 0, 1, 1},
+  {&__pyx_n_s__form_rules, __pyx_k__form_rules, sizeof(__pyx_k__form_rules), 0, 0, 1, 1},
+  {&__pyx_n_s__format, __pyx_k__format, sizeof(__pyx_k__format), 0, 0, 1, 1},
   {&__pyx_n_s__fphrase, __pyx_k__fphrase, sizeof(__pyx_k__fphrase), 0, 0, 1, 1},
   {&__pyx_n_s__from_binary, __pyx_k__from_binary, sizeof(__pyx_k__from_binary), 0, 0, 1, 1},
   {&__pyx_n_s__from_data, __pyx_k__from_data, sizeof(__pyx_k__from_data), 0, 0, 1, 1},
@@ -67991,9 +75930,14 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__ito, __pyx_k__ito, sizeof(__pyx_k__ito), 0, 0, 1, 1},
   {&__pyx_n_s__j, __pyx_k__j, sizeof(__pyx_k__j), 0, 0, 1, 1},
   {&__pyx_n_s__join, __pyx_k__join, sizeof(__pyx_k__join), 0, 0, 1, 1},
+  {&__pyx_n_s__k, __pyx_k__k, sizeof(__pyx_k__k), 0, 0, 1, 1},
   {&__pyx_n_s__key, __pyx_k__key, sizeof(__pyx_k__key), 0, 0, 1, 1},
   {&__pyx_n_s__lattice, __pyx_k__lattice, sizeof(__pyx_k__lattice), 0, 0, 1, 1},
   {&__pyx_n_s__lhs, __pyx_k__lhs, sizeof(__pyx_k__lhs), 0, 0, 1, 1},
+  {&__pyx_n_s__link, __pyx_k__link, sizeof(__pyx_k__link), 0, 0, 1, 1},
+  {&__pyx_n_s__link_i, __pyx_k__link_i, sizeof(__pyx_k__link_i), 0, 0, 1, 1},
+  {&__pyx_n_s__link_j, __pyx_k__link_j, sizeof(__pyx_k__link_j), 0, 0, 1, 1},
+  {&__pyx_n_s__links, __pyx_k__links, sizeof(__pyx_k__links), 0, 0, 1, 1},
   {&__pyx_n_s__logger, __pyx_k__logger, sizeof(__pyx_k__logger), 0, 0, 1, 1},
   {&__pyx_n_s__logging, __pyx_k__logging, sizeof(__pyx_k__logging), 0, 0, 1, 1},
   {&__pyx_n_s__lookup, __pyx_k__lookup, sizeof(__pyx_k__lookup), 0, 0, 1, 1},
@@ -68014,9 +75958,14 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__min_gap_size, __pyx_k__min_gap_size, sizeof(__pyx_k__min_gap_size), 0, 0, 1, 1},
   {&__pyx_n_s__name, __pyx_k__name, sizeof(__pyx_k__name), 0, 0, 1, 1},
   {&__pyx_n_s__namedtuple, __pyx_k__namedtuple, sizeof(__pyx_k__namedtuple), 0, 0, 1, 1},
+  {&__pyx_n_s__new_e_i, __pyx_k__new_e_i, sizeof(__pyx_k__new_e_i), 0, 0, 1, 1},
+  {&__pyx_n_s__new_e_j, __pyx_k__new_e_j, sizeof(__pyx_k__new_e_j), 0, 0, 1, 1},
   {&__pyx_n_s__next_states, __pyx_k__next_states, sizeof(__pyx_k__next_states), 0, 0, 1, 1},
+  {&__pyx_n_s__nt, __pyx_k__nt, sizeof(__pyx_k__nt), 0, 0, 1, 1},
+  {&__pyx_n_s__nt_open, __pyx_k__nt_open, sizeof(__pyx_k__nt_open), 0, 0, 1, 1},
   {&__pyx_n_s__num_subpatterns, __pyx_k__num_subpatterns, sizeof(__pyx_k__num_subpatterns), 0, 0, 1, 1},
   {&__pyx_n_s__offset, __pyx_k__offset, sizeof(__pyx_k__offset), 0, 0, 1, 1},
+  {&__pyx_n_s__old_last_nt, __pyx_k__old_last_nt, sizeof(__pyx_k__old_last_nt), 0, 0, 1, 1},
   {&__pyx_n_s__open, __pyx_k__open, sizeof(__pyx_k__open), 0, 0, 1, 1},
   {&__pyx_n_s__pad, __pyx_k__pad, sizeof(__pyx_k__pad), 0, 0, 1, 1},
   {&__pyx_n_s__paircount, __pyx_k__paircount, sizeof(__pyx_k__paircount), 0, 0, 1, 1},
@@ -68026,6 +75975,8 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__pattern2phrase_plus, __pyx_k__pattern2phrase_plus, sizeof(__pyx_k__pattern2phrase_plus), 0, 0, 1, 1},
   {&__pyx_n_s__phrase, __pyx_k__phrase, sizeof(__pyx_k__phrase), 0, 0, 1, 1},
   {&__pyx_n_s__phrase_location, __pyx_k__phrase_location, sizeof(__pyx_k__phrase_location), 0, 0, 1, 1},
+  {&__pyx_n_s__plus_links, __pyx_k__plus_links, sizeof(__pyx_k__plus_links), 0, 0, 1, 1},
+  {&__pyx_n_s__pop, __pyx_k__pop, sizeof(__pyx_k__pop), 0, 0, 1, 1},
   {&__pyx_n_s__precompute, __pyx_k__precompute, sizeof(__pyx_k__precompute), 0, 0, 1, 1},
   {&__pyx_n_s__precompute_file, __pyx_k__precompute_file, sizeof(__pyx_k__precompute_file), 0, 0, 1, 1},
   {&__pyx_n_s__precompute_rank, __pyx_k__precompute_rank, sizeof(__pyx_k__precompute_rank), 0, 0, 1, 1},
@@ -68043,6 +75994,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__resource, __pyx_k__resource, sizeof(__pyx_k__resource), 0, 0, 1, 1},
   {&__pyx_n_s__ru_stime, __pyx_k__ru_stime, sizeof(__pyx_k__ru_stime), 0, 0, 1, 1},
   {&__pyx_n_s__ru_utime, __pyx_k__ru_utime, sizeof(__pyx_k__ru_utime), 0, 0, 1, 1},
+  {&__pyx_n_s__rule, __pyx_k__rule, sizeof(__pyx_k__rule), 0, 0, 1, 1},
   {&__pyx_n_s__sa, __pyx_k__sa, sizeof(__pyx_k__sa), 0, 0, 1, 1},
   {&__pyx_n_s__sa_high, __pyx_k__sa_high, sizeof(__pyx_k__sa_high), 0, 0, 1, 1},
   {&__pyx_n_s__sa_low, __pyx_k__sa_low, sizeof(__pyx_k__sa_low), 0, 0, 1, 1},
@@ -68060,6 +76012,8 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__skip, __pyx_k__skip, sizeof(__pyx_k__skip), 0, 0, 1, 1},
   {&__pyx_n_s__sorted, __pyx_k__sorted, sizeof(__pyx_k__sorted), 0, 0, 1, 1},
   {&__pyx_n_s__source, __pyx_k__source, sizeof(__pyx_k__source), 0, 0, 1, 1},
+  {&__pyx_n_s__span_check, __pyx_k__span_check, sizeof(__pyx_k__span_check), 0, 0, 1, 1},
+  {&__pyx_n_s__span_flip, __pyx_k__span_flip, sizeof(__pyx_k__span_flip), 0, 0, 1, 1},
   {&__pyx_n_s__spanlen, __pyx_k__spanlen, sizeof(__pyx_k__spanlen), 0, 0, 1, 1},
   {&__pyx_n_s__split, __pyx_k__split, sizeof(__pyx_k__split), 0, 0, 1, 1},
   {&__pyx_n_s__start, __pyx_k__start, sizeof(__pyx_k__start), 0, 0, 1, 1},
@@ -68077,14 +76031,18 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__use_index, __pyx_k__use_index, sizeof(__pyx_k__use_index), 0, 0, 1, 1},
   {&__pyx_n_s__use_sent_id, __pyx_k__use_sent_id, sizeof(__pyx_k__use_sent_id), 0, 0, 1, 1},
   {&__pyx_n_s__value, __pyx_k__value, sizeof(__pyx_k__value), 0, 0, 1, 1},
+  {&__pyx_n_s__vec, __pyx_k__vec, sizeof(__pyx_k__vec), 0, 0, 1, 1},
   {&__pyx_n_s__w, __pyx_k__w, sizeof(__pyx_k__w), 0, 0, 1, 1},
   {&__pyx_n_s__warn, __pyx_k__warn, sizeof(__pyx_k__warn), 0, 0, 1, 1},
+  {&__pyx_n_s__wc, __pyx_k__wc, sizeof(__pyx_k__wc), 0, 0, 1, 1},
   {&__pyx_n_s__word, __pyx_k__word, sizeof(__pyx_k__word), 0, 0, 1, 1},
   {&__pyx_n_s__word_alignments, __pyx_k__word_alignments, sizeof(__pyx_k__word_alignments), 0, 0, 1, 1},
   {&__pyx_n_s__word_ids, __pyx_k__word_ids, sizeof(__pyx_k__word_ids), 0, 0, 1, 1},
   {&__pyx_n_s__words, __pyx_k__words, sizeof(__pyx_k__words), 0, 0, 1, 1},
   {&__pyx_n_s__write, __pyx_k__write, sizeof(__pyx_k__write), 0, 0, 1, 1},
   {&__pyx_n_s__write_text, __pyx_k__write_text, sizeof(__pyx_k__write_text), 0, 0, 1, 1},
+  {&__pyx_n_s__x, __pyx_k__x, sizeof(__pyx_k__x), 0, 0, 1, 1},
+  {&__pyx_n_s__y, __pyx_k__y, sizeof(__pyx_k__y), 0, 0, 1, 1},
   {&__pyx_n_s__zip, __pyx_k__zip, sizeof(__pyx_k__zip), 0, 0, 1, 1},
   {0, 0, 0, 0, 0, 0, 0}
 };
@@ -68099,8 +76057,8 @@ static int __Pyx_InitCachedBuiltins(void) {
   __pyx_builtin_zip = __Pyx_GetName(__pyx_b, __pyx_n_s__zip); if (!__pyx_builtin_zip) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 363; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_StopIteration = __Pyx_GetName(__pyx_b, __pyx_n_s__StopIteration); if (!__pyx_builtin_StopIteration) {__pyx_filename = __pyx_f[6]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_builtin_cmp = __Pyx_GetName(__pyx_b, __pyx_n_s__cmp); if (!__pyx_builtin_cmp) {__pyx_filename = __pyx_f[7]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_sorted = __Pyx_GetName(__pyx_b, __pyx_n_s__sorted); if (!__pyx_builtin_sorted) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_max = __Pyx_GetName(__pyx_b, __pyx_n_s__max); if (!__pyx_builtin_max) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_sorted = __Pyx_GetName(__pyx_b, __pyx_n_s__sorted); if (!__pyx_builtin_sorted) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_max = __Pyx_GetName(__pyx_b, __pyx_n_s__max); if (!__pyx_builtin_max) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   return 0;
   __pyx_L1_error:;
   return -1;
@@ -68834,47 +76792,96 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_101));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_102));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":318
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")             # <<<<<<<<<<<<<<
  *         self.alignment = alignment
  * 
  */
-  __pyx_k_tuple_107 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_107)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 318; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_107 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_107)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 326; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_k_tuple_107);
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_106));
   PyTuple_SET_ITEM(__pyx_k_tuple_107, 0, ((PyObject *)__pyx_kp_s_106));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_106));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_107));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1018
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
  *                         else:
  *                             #ERROR: We never get here
  *                             raise Exception("Keyword trie error")             # <<<<<<<<<<<<<<
  *                 # checking whether lookup_required
  *                 if lookup_required:
  */
-  __pyx_k_tuple_122 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_122)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_122 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_122)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_k_tuple_122);
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_121));
   PyTuple_SET_ITEM(__pyx_k_tuple_122, 0, ((PyObject *)__pyx_kp_s_121));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_121));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_122));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1803
- * 
- *     def add_instance(self, f_words, e_words, alignment):
- *         logger.info("I would add:")             # <<<<<<<<<<<<<<
- *         logger.info(decode_words(f_words))
- *         logger.info(decode_words(e_words))
- */
-  __pyx_k_tuple_135 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_135)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1803; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_135);
-  __Pyx_INCREF(((PyObject *)__pyx_kp_s_134));
-  PyTuple_SET_ITEM(__pyx_k_tuple_135, 0, ((PyObject *)__pyx_kp_s_134));
-  __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_134));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_135));
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1851
+ *         # Extract all possible hierarchical phrases starting at a source index
+ *         # f_ i and j are current, e_ i and j are previous
+ *         def extract(f_i, f_j, e_i, e_j, wc, links, nt, nt_open):             # <<<<<<<<<<<<<<
+ *             # Phrase extraction limits
+ *             if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+ */
+  __pyx_k_tuple_134 = PyTuple_New(17); if (unlikely(!__pyx_k_tuple_134)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_134);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__f_i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 0, ((PyObject *)__pyx_n_s__f_i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__f_i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__f_j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 1, ((PyObject *)__pyx_n_s__f_j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__f_j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__e_i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 2, ((PyObject *)__pyx_n_s__e_i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__e_i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__e_j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 3, ((PyObject *)__pyx_n_s__e_j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__e_j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__wc));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 4, ((PyObject *)__pyx_n_s__wc));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__wc));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__links));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 5, ((PyObject *)__pyx_n_s__links));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__links));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__nt));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 6, ((PyObject *)__pyx_n_s__nt));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__nt));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__nt_open));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 7, ((PyObject *)__pyx_n_s__nt_open));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__nt_open));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__link_i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 8, ((PyObject *)__pyx_n_s__link_i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__link_i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__link_j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 9, ((PyObject *)__pyx_n_s__link_j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__link_j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__new_e_i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 10, ((PyObject *)__pyx_n_s__new_e_i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__new_e_i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__new_e_j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 11, ((PyObject *)__pyx_n_s__new_e_j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__new_e_j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__old_last_nt));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 12, ((PyObject *)__pyx_n_s__old_last_nt));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__old_last_nt));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__rule));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 13, ((PyObject *)__pyx_n_s__rule));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__rule));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__collision));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 14, ((PyObject *)__pyx_n_s__collision));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__collision));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__link));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 15, ((PyObject *)__pyx_n_s__link));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__link));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__plus_links));
+  PyTuple_SET_ITEM(__pyx_k_tuple_134, 16, ((PyObject *)__pyx_n_s__plus_links));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__plus_links));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_134));
+  __pyx_k_codeobj_135 = (PyObject*)__Pyx_PyCode_New(8, 0, 17, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_134, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_136, __pyx_n_s__extract, 1851, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_135)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "_sa.pyx":9
  *             resource.getrusage(resource.RUSAGE_SELF).ru_stime)
@@ -68883,16 +76890,16 @@ static int __Pyx_InitCachedConstants(void) {
  *     if filename.endswith('.gz'):
  *         return gzip.GzipFile(filename)
  */
-  __pyx_k_tuple_137 = PyTuple_New(2); if (unlikely(!__pyx_k_tuple_137)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_137);
+  __pyx_k_tuple_140 = PyTuple_New(2); if (unlikely(!__pyx_k_tuple_140)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_140);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__filename));
-  PyTuple_SET_ITEM(__pyx_k_tuple_137, 0, ((PyObject *)__pyx_n_s__filename));
+  PyTuple_SET_ITEM(__pyx_k_tuple_140, 0, ((PyObject *)__pyx_n_s__filename));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__filename));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__filename));
-  PyTuple_SET_ITEM(__pyx_k_tuple_137, 1, ((PyObject *)__pyx_n_s__filename));
+  PyTuple_SET_ITEM(__pyx_k_tuple_140, 1, ((PyObject *)__pyx_n_s__filename));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__filename));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_137));
-  __pyx_k_codeobj_138 = (PyObject*)__Pyx_PyCode_New(1, 0, 2, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_137, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_139, __pyx_n_s__gzip_or_text, 9, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_138)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_140));
+  __pyx_k_codeobj_141 = (PyObject*)__Pyx_PyCode_New(1, 0, 2, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_140, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_142, __pyx_n_s__gzip_or_text, 9, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_141)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 9; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "_sa.pyx":15
  *         return open(filename)
@@ -68901,12 +76908,12 @@ static int __Pyx_InitCachedConstants(void) {
  * 
  * include "float_list.pxi"
  */
-  __pyx_k_tuple_141 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_141)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_141);
-  __Pyx_INCREF(((PyObject *)__pyx_kp_s_140));
-  PyTuple_SET_ITEM(__pyx_k_tuple_141, 0, ((PyObject *)__pyx_kp_s_140));
-  __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_140));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_141));
+  __pyx_k_tuple_144 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_144)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_144);
+  __Pyx_INCREF(((PyObject *)__pyx_kp_s_143));
+  PyTuple_SET_ITEM(__pyx_k_tuple_144, 0, ((PyObject *)__pyx_kp_s_143));
+  __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_143));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_144));
 
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
  *     return ALPHABET.fromstring(string, terminal)
@@ -68915,25 +76922,25 @@ static int __Pyx_InitCachedConstants(void) {
  *     word_ids = (sym_fromstring(word, True) for word in words)
  *     return tuple(((word, None, 1), ) for word in word_ids)
  */
-  __pyx_k_tuple_142 = PyTuple_New(5); if (unlikely(!__pyx_k_tuple_142)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_142);
+  __pyx_k_tuple_145 = PyTuple_New(5); if (unlikely(!__pyx_k_tuple_145)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_145);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__words));
-  PyTuple_SET_ITEM(__pyx_k_tuple_142, 0, ((PyObject *)__pyx_n_s__words));
+  PyTuple_SET_ITEM(__pyx_k_tuple_145, 0, ((PyObject *)__pyx_n_s__words));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__words));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__word_ids));
-  PyTuple_SET_ITEM(__pyx_k_tuple_142, 1, ((PyObject *)__pyx_n_s__word_ids));
+  PyTuple_SET_ITEM(__pyx_k_tuple_145, 1, ((PyObject *)__pyx_n_s__word_ids));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__word_ids));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_142, 2, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_145, 2, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_142, 3, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_145, 3, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_142, 4, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_145, 4, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_142));
-  __pyx_k_codeobj_143 = (PyObject*)__Pyx_PyCode_New(1, 0, 5, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_142, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_144, __pyx_n_s__make_lattice, 107, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_143)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_145));
+  __pyx_k_codeobj_146 = (PyObject*)__Pyx_PyCode_New(1, 0, 5, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_145, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_147, __pyx_n_s__make_lattice, 107, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_146)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
  *     return tuple(((word, None, 1), ) for word in word_ids)
@@ -68942,19 +76949,19 @@ static int __Pyx_InitCachedConstants(void) {
  *     return tuple((sym_tostring(sym), weight, dist) for (sym, weight, dist) in arc
  *             for arc in node for node in lattice)
  */
-  __pyx_k_tuple_145 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_145)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_145);
+  __pyx_k_tuple_148 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_148)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_148);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__lattice));
-  PyTuple_SET_ITEM(__pyx_k_tuple_145, 0, ((PyObject *)__pyx_n_s__lattice));
+  PyTuple_SET_ITEM(__pyx_k_tuple_148, 0, ((PyObject *)__pyx_n_s__lattice));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__lattice));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_145, 1, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_148, 1, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_145, 2, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_148, 2, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_145));
-  __pyx_k_codeobj_146 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_145, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_144, __pyx_n_s__decode_lattice, 111, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_146)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_148));
+  __pyx_k_codeobj_149 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_148, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_147, __pyx_n_s__decode_lattice, 111, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_149)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  *             for arc in node for node in lattice)
@@ -68963,19 +76970,19 @@ static int __Pyx_InitCachedConstants(void) {
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)
  * 
  */
-  __pyx_k_tuple_147 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_147)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_147);
+  __pyx_k_tuple_150 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_150)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_150);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__lattice));
-  PyTuple_SET_ITEM(__pyx_k_tuple_147, 0, ((PyObject *)__pyx_n_s__lattice));
+  PyTuple_SET_ITEM(__pyx_k_tuple_150, 0, ((PyObject *)__pyx_n_s__lattice));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__lattice));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_147, 1, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_150, 1, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_147, 2, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_150, 2, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_147));
-  __pyx_k_codeobj_148 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_147, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_144, __pyx_n_s__decode_sentence, 115, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_148)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_150));
+  __pyx_k_codeobj_151 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_150, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_147, __pyx_n_s__decode_sentence, 115, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_151)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)
@@ -68984,19 +76991,19 @@ static int __Pyx_InitCachedConstants(void) {
  *     return tuple(sym_fromstring(word, True) for word in words)
  * 
  */
-  __pyx_k_tuple_149 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_149)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_149);
+  __pyx_k_tuple_152 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_152)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_152);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__words));
-  PyTuple_SET_ITEM(__pyx_k_tuple_149, 0, ((PyObject *)__pyx_n_s__words));
+  PyTuple_SET_ITEM(__pyx_k_tuple_152, 0, ((PyObject *)__pyx_n_s__words));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__words));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_149, 1, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_152, 1, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_149, 2, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_152, 2, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_149));
-  __pyx_k_codeobj_150 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_149, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_144, __pyx_n_s__encode_words, 118, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_150)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_152));
+  __pyx_k_codeobj_153 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_152, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_147, __pyx_n_s__encode_words, 118, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_153)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
  *     return tuple(sym_fromstring(word, True) for word in words)
@@ -69004,19 +77011,103 @@ static int __Pyx_InitCachedConstants(void) {
  * def decode_words(syms):             # <<<<<<<<<<<<<<
  *     return tuple(sym_tostring(sym) for sym in syms)
  */
-  __pyx_k_tuple_151 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_151)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_k_tuple_151);
+  __pyx_k_tuple_154 = PyTuple_New(3); if (unlikely(!__pyx_k_tuple_154)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_154);
   __Pyx_INCREF(((PyObject *)__pyx_n_s__syms));
-  PyTuple_SET_ITEM(__pyx_k_tuple_151, 0, ((PyObject *)__pyx_n_s__syms));
+  PyTuple_SET_ITEM(__pyx_k_tuple_154, 0, ((PyObject *)__pyx_n_s__syms));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__syms));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_151, 1, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_154, 1, ((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_154, 2, ((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_154));
+  __pyx_k_codeobj_155 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_154, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_147, __pyx_n_s__decode_words, 121, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_155)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2087
+ * # Spans are _inclusive_ on both ends [i, j]
+ * # TODO: Replace all of this with bit vectors?
+ * def span_check(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+  __pyx_k_tuple_157 = PyTuple_New(4); if (unlikely(!__pyx_k_tuple_157)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_157);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__vec));
+  PyTuple_SET_ITEM(__pyx_k_tuple_157, 0, ((PyObject *)__pyx_n_s__vec));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__vec));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_157, 1, ((PyObject *)__pyx_n_s__i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_157, 2, ((PyObject *)__pyx_n_s__j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__k));
+  PyTuple_SET_ITEM(__pyx_k_tuple_157, 3, ((PyObject *)__pyx_n_s__k));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__k));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_157));
+  __pyx_k_codeobj_158 = (PyObject*)__Pyx_PyCode_New(3, 0, 4, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_157, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_136, __pyx_n_s__span_check, 2087, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_158)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2095
+ *     return True
+ * 
+ * def span_flip(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+  __pyx_k_tuple_159 = PyTuple_New(4); if (unlikely(!__pyx_k_tuple_159)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_159);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__vec));
+  PyTuple_SET_ITEM(__pyx_k_tuple_159, 0, ((PyObject *)__pyx_n_s__vec));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__vec));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__i));
+  PyTuple_SET_ITEM(__pyx_k_tuple_159, 1, ((PyObject *)__pyx_n_s__i));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_159, 2, ((PyObject *)__pyx_n_s__j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__j));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__k));
+  PyTuple_SET_ITEM(__pyx_k_tuple_159, 3, ((PyObject *)__pyx_n_s__k));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__k));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_159));
+  __pyx_k_codeobj_160 = (PyObject*)__Pyx_PyCode_New(3, 0, 4, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_159, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_136, __pyx_n_s__span_flip, 2095, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_160)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2101
+ *         k += 1
+ * 
+ * def fmt_rule(f_sym, e_sym, links):             # <<<<<<<<<<<<<<
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ */
+  __pyx_k_tuple_161 = PyTuple_New(8); if (unlikely(!__pyx_k_tuple_161)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_k_tuple_161);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__f_sym));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 0, ((PyObject *)__pyx_n_s__f_sym));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__f_sym));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__e_sym));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 1, ((PyObject *)__pyx_n_s__e_sym));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__e_sym));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__links));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 2, ((PyObject *)__pyx_n_s__links));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__links));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__a_str));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 3, ((PyObject *)__pyx_n_s__a_str));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__a_str));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 4, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
   __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
-  PyTuple_SET_ITEM(__pyx_k_tuple_151, 2, ((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 5, ((PyObject *)__pyx_n_s__genexpr));
   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
-  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_151));
-  __pyx_k_codeobj_152 = (PyObject*)__Pyx_PyCode_New(1, 0, 3, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_151, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_144, __pyx_n_s__decode_words, 121, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_152)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 6, ((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__genexpr));
+  PyTuple_SET_ITEM(__pyx_k_tuple_161, 7, ((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__genexpr));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_161));
+  __pyx_k_codeobj_162 = (PyObject*)__Pyx_PyCode_New(3, 0, 8, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_161, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_136, __pyx_n_s__fmt_rule, 2101, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_162)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_RefNannyFinishContext();
   return 0;
   __pyx_L1_error:;
@@ -69320,14 +77411,24 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_ptype_3_sa___pyx_scope_struct_17_genexpr = &__pyx_type_3_sa___pyx_scope_struct_17_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_18_alignments) < 0) {__pyx_filename = __pyx_f[7]; __pyx_lineno = 190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_18_alignments = &__pyx_type_3_sa___pyx_scope_struct_18_alignments;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_19_input) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_19_input) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_19_input = &__pyx_type_3_sa___pyx_scope_struct_19_input;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_20___iter__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_20___iter__ = &__pyx_type_3_sa___pyx_scope_struct_20___iter__;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_21___str__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_21___str__ = &__pyx_type_3_sa___pyx_scope_struct_21___str__;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_genexpr) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_20_add_instance) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1826; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_20_add_instance = &__pyx_type_3_sa___pyx_scope_struct_20_add_instance;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_21_fmt_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_21_fmt_rule = &__pyx_type_3_sa___pyx_scope_struct_21_fmt_rule;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_22_genexpr = &__pyx_type_3_sa___pyx_scope_struct_22_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_23_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_23_genexpr = &__pyx_type_3_sa___pyx_scope_struct_23_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_24_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_24_genexpr = &__pyx_type_3_sa___pyx_scope_struct_24_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_25___iter__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_25___iter__ = &__pyx_type_3_sa___pyx_scope_struct_25___iter__;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_26___str__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_26___str__ = &__pyx_type_3_sa___pyx_scope_struct_26___str__;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_27_genexpr) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_27_genexpr = &__pyx_type_3_sa___pyx_scope_struct_27_genexpr;
   /*--- Type import code ---*/
   /*--- Variable import code ---*/
   /*--- Function import code ---*/
@@ -69390,7 +77491,7 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_t_2 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__getLogger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_141), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_k_tuple_144), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   if (PyObject_SetAttr(__pyx_m, __pyx_n_s__logger, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
@@ -69703,7 +77804,7 @@ PyMODINIT_FUNC PyInit__sa(void)
  * 
  * cdef class TrieNode:
  */
-  __pyx_v_3_sa_EPSILON = __pyx_f_3_sa_sym_fromstring(__pyx_k_153, 1);
+  __pyx_v_3_sa_EPSILON = __pyx_f_3_sa_sym_fromstring(__pyx_k_156, 1);
 
   /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":57
  *     cdef public int count
@@ -69718,6 +77819,42 @@ PyMODINIT_FUNC PyInit__sa(void)
   __Pyx_GIVEREF(__pyx_t_1);
   __pyx_t_1 = 0;
 
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2087
+ * # Spans are _inclusive_ on both ends [i, j]
+ * # TODO: Replace all of this with bit vectors?
+ * def span_check(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_13span_check, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_check, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2095
+ *     return True
+ * 
+ * def span_flip(vec, i, j):             # <<<<<<<<<<<<<<
+ *     k = i
+ *     while k <= j:
+ */
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_15span_flip, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_flip, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2095; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2101
+ *         k += 1
+ * 
+ * def fmt_rule(f_sym, e_sym, links):             # <<<<<<<<<<<<<<
+ *     a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+ *     return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+ */
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_17fmt_rule, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__fmt_rule, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+
   /* "/home/m/workspace/cdec/python/src/sa/features.pxi":1
  * cdef StringMap FD = StringMap() # Feature name dictionary             # <<<<<<<<<<<<<<
  * 
diff --git a/python/src/sa/rulefactory.pxi b/python/src/sa/rulefactory.pxi
index a0bda793..81ea7960 100644
--- a/python/src/sa/rulefactory.pxi
+++ b/python/src/sa/rulefactory.pxi
@@ -264,6 +264,14 @@ cdef class HieroCachingRuleFactory:
     cdef IntList findexes
     cdef IntList findexes1
 
+    cdef phrases_f
+    cdef phrases_e
+    cdef phrases_fe
+    cdef phrases_al
+    cdef bilex_f
+    cdef bilex_e
+    cdef bilex_fe
+
     def __cinit__(self,
             # compiled alignment object (REQUIRED)
             Alignment alignment,
@@ -370,6 +378,19 @@ cdef class HieroCachingRuleFactory:
 
         self.findexes = IntList(initial_len=10)
         self.findexes1 = IntList(initial_len=10)
+        
+        # Online stats 
+        
+        # Phrase counts
+        self.phrases_f = defaultdict(int)
+        self.phrases_e = defaultdict(int)
+        self.phrases_fe = defaultdict(lambda: defaultdict(int))
+        self.phrases_al = defaultdict(dict)
+
+        # Bilexical counts
+        self.bilex_f = defaultdict(int)
+        self.bilex_e = defaultdict(int)
+        self.bilex_fe = defaultdict(lambda: defaultdict(int))
 
     def configure(self, SuffixArray fsarray, DataArray edarray,
             Sampler sampler, Scorer scorer):
@@ -1799,8 +1820,290 @@ cdef class HieroCachingRuleFactory:
 
         return extracts
 
+    # Aggregate stats from a training instance:
+    # Extract hierarchical phrase pairs
+    # Update bilexical counts
     def add_instance(self, f_words, e_words, alignment):
-        logger.info("I would add:")
-        logger.info(decode_words(f_words))
-        logger.info(decode_words(e_words))
-        logger.info(alignment)
\ No newline at end of file
+
+        # Bilexical counts
+        self.aggr_bilex(f_words, e_words)
+
+        # Rules extracted from this instance
+        rules = set()
+
+        f_len = len(f_words)
+        e_len = len(e_words)
+
+        # Pre-compute alignment info
+        al = [[] for i in range(f_len)]
+        al_span = [[f_len + 1, -1] for i in range(f_len)]
+        for (f, e) in alignment:
+            al[f].append(e)
+            al_span[f][0] = min(al_span[f][0], e)
+            al_span[f][1] = max(al_span[f][1], e)
+
+        # Target side word coverage
+        # TODO: Does Cython do bit vectors?
+        cover = [0] * e_len
+
+        # Extract all possible hierarchical phrases starting at a source index
+        # f_ i and j are current, e_ i and j are previous
+        def extract(f_i, f_j, e_i, e_j, wc, links, nt, nt_open):
+            # Phrase extraction limits
+            if wc + len(nt) > self.max_length or (f_j + 1) > f_len or \
+                    (f_j - f_i) + 1 > self.max_initial_size:
+                return
+            # Unaligned word
+            if not al[f_j]:
+                # Open non-terminal: extend
+                if nt_open:
+                    nt[-1][2] += 1
+                    extract(f_i, f_j + 1, e_i, e_j, wc, links, nt, True)
+                    nt[-1][2] -= 1
+                # No open non-terminal: extend with word
+                else:
+                    extract(f_i, f_j + 1, e_i, e_j, wc + 1, links, nt, False)
+                return
+            # Aligned word
+            link_i = al_span[f_j][0]
+            link_j = al_span[f_j][1]
+            new_e_i = min(link_i, e_i)
+            new_e_j = max(link_j, e_j)
+            # Open non-terminal: close, extract, extend
+            if nt_open:
+                # Close non-terminal, checking for collisions
+                old_last_nt = nt[-1][:]
+                nt[-1][2] = f_j
+                if link_i < nt[-1][3]:
+                    if not span_check(cover, link_i, nt[-1][3] - 1):
+                        nt[-1] = old_last_nt
+                        return
+                    span_flip(cover, link_i, nt[-1][3] - 1)
+                    nt[-1][3] = link_i
+                if link_j > nt[-1][4]:
+                    if not span_check(cover, nt[-1][4] + 1, link_j):
+                        nt[-1] = old_last_nt
+                        return
+                    span_flip(cover, nt[-1][4] + 1, link_j)
+                    nt[-1][4] = link_j
+                for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+                    rules.add(rule)
+                extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+                nt[-1] = old_last_nt
+                if link_i < nt[-1][3]:
+                    span_flip(cover, link_i, nt[-1][3] - 1)
+                if link_j > nt[-1][4]:
+                    span_flip(cover, nt[-1][4] + 1, link_j)
+                return
+            # No open non-terminal
+            # Extract, extend with word
+            collision = False
+            for link in al[f_j]:
+                if cover[link]:
+                    collision = True
+            # Collisions block extraction and extension, but may be okay for
+            # continuing non-terminals
+            if not collision:
+                plus_links = []
+                for link in al[f_j]:
+                    plus_links.append((f_j, link))
+                    cover[link] = ~cover[link]
+                links.append(plus_links)
+                for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+                    rules.add(rule)
+                extract(f_i, f_j + 1, new_e_i, new_e_j, wc + 1, links, nt, False)
+                links.pop()
+                for link in al[f_j]:
+                    cover[link] = ~cover[link]
+            # Try to add a word to a (closed) non-terminal, extract, extend
+            if nt and nt[-1][2] == f_j - 1:
+                # Add to non-terminal, checking for collisions
+                old_last_nt = nt[-1][:]
+                nt[-1][2] = f_j
+                if link_i < nt[-1][3]:
+                    if not span_check(cover, link_i, nt[-1][3] - 1):
+                        nt[-1] = old_last_nt
+                        return
+                    span_flip(cover, link_i, nt[-1][3] - 1)
+                    nt[-1][3] = link_i
+                if link_j > nt[-1][4]:
+                    if not span_check(cover, nt[-1][4] + 1, link_j):
+                        nt[-1] = old_last_nt
+                        return
+                    span_flip(cover, nt[-1][4] + 1, link_j)
+                    nt[-1][4] = link_j
+                # Require at least one word in phrase
+                if links:
+                    for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+                        rules.add(rule)
+                extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+                nt[-1] = old_last_nt
+                if new_e_i < nt[-1][3]:
+                    span_flip(cover, link_i, nt[-1][3] - 1)
+                if link_j > nt[-1][4]:
+                    span_flip(cover, nt[-1][4] + 1, link_j)
+            # Try to start a new non-terminal, extract, extend
+            if (not nt or f_j - nt[-1][2] > 1) and len(nt) < self.max_nonterminals:
+                # Check for collisions
+                if not span_check(cover, link_i, link_j):
+                    return
+                span_flip(cover, link_i, link_j)
+                nt.append([(nt[-1][0] + 1) if nt else 1, f_j, f_j, link_i, link_j])
+                # Require at least one word in phrase
+                if links:
+                    for rule in self.form_rules(f_i, new_e_i, f_words[f_i:f_j + 1], e_words[new_e_i:new_e_j + 1], nt, links):
+                        rules.add(rule)
+                extract(f_i, f_j + 1, new_e_i, new_e_j, wc, links, nt, False)
+                nt.pop()
+                span_flip(cover, link_i, link_j)
+            # TODO: try adding NT to start, end, both
+            # check: one aligned word on boundary that is not part of a NT
+
+        # Try to extract phrases from every f index
+        f_i = 0
+        while f_i < f_len:
+            # Skip if phrases won't be tight on left side
+            if not al[f_i]:
+                f_i += 1
+                continue
+            extract(f_i, f_i, f_len + 1, -1, 1, [], [], False)
+            f_i += 1
+
+        for rule in sorted(rules):
+            logger.info(rule)
+
+    # Aggregate bilexical counts
+    def aggr_bilex(self, f_words, e_words):
+
+        for e_w in e_words:
+            self.bilex_e[e_w] += 1
+
+        for f_w in f_words:
+            self.bilex_f[f_w] += 1
+            for e_w in e_words:
+                self.bilex_fe[f_w][e_w] += 1
+
+    # Create a rule from source, target, non-terminals, and alignments
+    def form_rules(self, f_i, e_i, f_span, e_span, nt, al):
+    
+        # This could be more efficient but is unlikely to be the bottleneck
+    
+        rules = []
+    
+        nt_inv = sorted(nt, cmp=lambda x, y: cmp(x[3], y[3]))
+    
+        logger.info(nt)
+        
+        f_sym = list(f_span[:])
+        off = f_i
+        for next_nt in nt:
+            nt_len = (next_nt[2] - next_nt[1]) + 1
+            i = 0
+            while i < nt_len:
+                f_sym.pop(next_nt[1] - off)
+                i += 1
+            f_sym.insert(next_nt[1] - off, sym_setindex(self.category, next_nt[0]))
+            off += (nt_len - 1)
+    
+        e_sym = list(e_span[:])
+        off = e_i
+        for next_nt in nt_inv:
+            nt_len = (next_nt[4] - next_nt[3]) + 1
+            i = 0
+            while i < nt_len:
+                e_sym.pop(next_nt[3] - off)
+                i += 1
+            e_sym.insert(next_nt[3] - off, sym_setindex(self.category, next_nt[0]))
+            off += (nt_len - 1)
+    
+        # Adjusting alignment links takes some doing
+        links = [list(link) for sub in al for link in sub]
+        links_len = len(links)
+        nt_len = len(nt)
+        nt_i = 0
+        off = f_i
+        i = 0
+        while i < links_len:
+            while nt_i < nt_len and links[i][0] > nt[nt_i][1]:
+                off += (nt[nt_i][2] - nt[nt_i][1])
+                nt_i += 1
+            links[i][0] -= off
+            i += 1
+        nt_i = 0
+        off = e_i
+        i = 0
+        while i < links_len:
+            while nt_i < nt_len and links[i][1] > nt_inv[nt_i][3]:
+                off += (nt_inv[nt_i][4] - nt_inv[nt_i][3])
+                nt_i += 1
+            links[i][1] -= off
+            i += 1
+    
+        # Rule
+        rules.append(fmt_rule(f_sym, e_sym, links))
+        if len(f_sym) >= self.max_length or len(nt) >= self.max_nonterminals:
+            return rules
+        last_index = nt[-1][0] if nt else 0
+        # Rule [X]
+        if not nt or not sym_isvar(f_sym[-1]):
+            f_sym.append(sym_setindex(self.category, last_index + 1))
+            e_sym.append(sym_setindex(self.category, last_index + 1))
+            rules.append(fmt_rule(f_sym, e_sym, links))
+            f_sym.pop()
+            e_sym.pop()
+        # [X] Rule
+        f_len = len(f_sym)
+        e_len = len(e_sym)
+        if not nt or not sym_isvar(f_sym[0]):
+            for i from 0 <= i < f_len:
+                if sym_isvar(f_sym[i]):
+                    f_sym[i] = sym_setindex(self.category, sym_getindex(f_sym[i]) + 1)
+            for i from 0 <= i < e_len:
+                if sym_isvar(e_sym[i]):
+                    e_sym[i] = sym_setindex(self.category, sym_getindex(e_sym[i]) + 1)
+            for link in links:
+                link[0] += 1
+                link[1] += 1
+            f_sym.insert(0, sym_setindex(self.category, 1))
+            e_sym.insert(0, sym_setindex(self.category, 1))
+            rules.append(fmt_rule(f_sym, e_sym, links))
+        if len(f_sym) >= self.max_length or len(nt) + 1 >= self.max_nonterminals:
+            return rules
+        # [X] Rule [X]
+        if not nt or not sym_isvar(f_sym[-1]):
+            f_sym.append(sym_setindex(self.category, last_index + 2))
+            e_sym.append(sym_setindex(self.category, last_index + 2))
+            rules.append(fmt_rule(f_sym, e_sym, links))
+        return rules
+    
+    # Debugging
+    def dump_online_stats(self):
+        logger.info(self.phrases_f)
+        logger.info(self.phrases_e)
+        logger.info(self.phrases_fe)
+
+# Spans are _inclusive_ on both ends [i, j]
+# TODO: Replace all of this with bit vectors?
+def span_check(vec, i, j):
+    k = i
+    while k <= j:
+        if vec[k]:
+            return False
+        k += 1
+    return True
+
+def span_flip(vec, i, j):
+    k = i
+    while k <= j:
+        vec[k] = ~vec[k]
+        k += 1
+
+def fmt_rule(f_sym, e_sym, links):
+    a_str = ' '.join('{0}-{1}'.format(i, j) for (i, j) in links)
+    return '[X] ||| {0} ||| {1} ||| {2}'.format(' '.join(sym_tostring(sym) for sym in f_sym),
+                                                ' '.join(sym_tostring(sym) for sym in e_sym),
+                                                a_str)
+    
+        #(f, e, count, als) = e
+    #a = tuple('{0}-{1}'.format(packed/65536, packed%65536) for packed in als)
+    #logger.info("f: {0}, e: {1}, count: {2}, a: {3}".format(f, e, count, a))