Merge remote-tracking branch 'upstream/master'

4 files changed, 7856 insertions, 4971 deletions

diff --git a/python/src/sa/_sa.c b/python/src/sa/_sa.c
index 15544970..89445b45 100644
--- a/python/src/sa/_sa.c
+++ b/python/src/sa/_sa.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.17.1 on Mon Jan  7 22:31:38 2013 */
+/* Generated by Cython 0.17.1 on Mon Jan 28 14:28:01 2013 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -360,10 +360,10 @@ static const char *__pyx_f[] = {
 struct __pyx_obj_3_sa_HieroCachingRuleFactory;
 struct __pyx_obj_3_sa___pyx_scope_struct_9_decode_sentence;
 struct __pyx_obj_3_sa___pyx_scope_struct_17_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_3_compute_stats;
 struct __pyx_obj_3_sa___pyx_scope_struct_12_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr;
 struct __pyx_obj_3_sa_IntList;
 struct __pyx_obj_3_sa_VEBIterator;
 struct __pyx_obj_3_sa_BiLex;
@@ -372,8 +372,8 @@ 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_14_genexpr;
 struct __pyx_obj_3_sa_SuffixArray;
@@ -381,11 +381,14 @@ 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_21_add_instance;
 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_23_fmt_rule;
-struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_28___str__;
 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;
@@ -396,19 +399,18 @@ struct __pyx_obj_3_sa_Alignment;
 struct __pyx_obj_3_sa_BitSet;
 struct __pyx_obj_3_sa_Sampler;
 struct __pyx_obj_3_sa_StringMap;
+struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases;
 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_27___iter__;
 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_25___iter__;
 struct __pyx_obj_3_sa_FloatList;
 struct __pyx_t_3_sa__node;
 struct __pyx_t_3_sa__BitSet;
@@ -490,7 +492,7 @@ struct __pyx_t_3_sa__Trie_Node {
   int arr_len;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":66
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":76
  * 
  * # linked list structure for storing matches in BaselineRuleFactory
  * cdef struct match_node:             # <<<<<<<<<<<<<<
@@ -502,7 +504,7 @@ struct __pyx_t_3_sa_match_node {
   struct __pyx_t_3_sa_match_node *next;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":162
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":172
  * 
  * # struct used to encapsulate a single matching
  * cdef struct Matching:             # <<<<<<<<<<<<<<
@@ -517,7 +519,7 @@ struct __pyx_t_3_sa_Matching {
   int size;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":218
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":228
  * 
  * 
  * cdef class HieroCachingRuleFactory:             # <<<<<<<<<<<<<<
@@ -563,6 +565,8 @@ struct __pyx_obj_3_sa_HieroCachingRuleFactory {
   int require_aligned_chunks;
   struct __pyx_obj_3_sa_IntList *findexes;
   struct __pyx_obj_3_sa_IntList *findexes1;
+  int online;
+  PyObject *samples_f;
   PyObject *phrases_f;
   PyObject *phrases_e;
   PyObject *phrases_fe;
@@ -573,7 +577,7 @@ struct __pyx_obj_3_sa_HieroCachingRuleFactory {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
  *             for arc in node for node in lattice)
  * 
  * def decode_sentence(lattice):             # <<<<<<<<<<<<<<
@@ -603,17 +607,20 @@ struct __pyx_obj_3_sa___pyx_scope_struct_17_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1992
- * 
- *     # Create a rule from source, target, non-terminals, and alignments
- *     def form_rule(self, f_i, e_i, f_span, e_span, nt, al):             # <<<<<<<<<<<<<<
- * 
- *         # Substitute in non-terminals
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
+ *         # Online rule extraction and scoring
+ *         if self.online:
+ *             f_syms = tuple(word[0][0] for word in fwords)             # <<<<<<<<<<<<<<
+ *             for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
+ *                 spanlen = (lex_j - lex_i) + 1
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule {
+struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr {
   PyObject_HEAD
-  PyObject *__pyx_v_links;
-  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+  struct __pyx_obj_3_sa___pyx_scope_struct_19_input *__pyx_outer_scope;
+  PyObject *__pyx_v_word;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
@@ -648,7 +655,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_3_compute_stats {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":119
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
  * 
  * def encode_words(words):
  *     return tuple(sym_fromstring(word, True) for word in words)             # <<<<<<<<<<<<<<
@@ -665,18 +672,17 @@ struct __pyx_obj_3_sa___pyx_scope_struct_12_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2053
- *         f = Phrase(f_sym)
- *         e = Phrase(e_sym)
- *         a = tuple(self.alignment.link(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
- *         return (f, e, a, lex_f_i, lex_f_j)
+/* "/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_22_genexpr {
+struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *__pyx_outer_scope;
-  PyObject *__pyx_v_i;
-  PyObject *__pyx_v_j;
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *__pyx_outer_scope;
+  PyObject *__pyx_v_feat;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
   PyObject *(*__pyx_t_2)(PyObject *);
@@ -749,7 +755,7 @@ struct __pyx_obj_3_sa_VEB {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)
  * 
  * def encode_words(words):             # <<<<<<<<<<<<<<
@@ -809,6 +815,24 @@ struct __pyx_obj_3_sa_BitSetIterator {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2110
+ *         f = Phrase(f_sym)
+ *         e = Phrase(e_sym)
+ *         a = tuple(self.alignment.link(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
+ *         return (f, e, a, lex_f_i, lex_f_j)
+ * 
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_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 *);
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/precomputation.pxi":188
  * 
  * 
@@ -830,29 +854,6 @@ struct __pyx_obj_3_sa_Precomputation {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1829
- *     # Aggregate stats from a training instance
- *     # (Extract rules, update counts)
- *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
- * 
- *         # Rules extracted from this instance
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance {
-  PyObject_HEAD
-  PyObject *__pyx_v_al;
-  PyObject *__pyx_v_cover;
-  PyObject *__pyx_v_e_nt_cover;
-  PyObject *__pyx_v_e_words;
-  PyObject *__pyx_v_ef_span;
-  PyObject *__pyx_v_extract;
-  PyObject *__pyx_v_f_len;
-  PyObject *__pyx_v_f_words;
-  PyObject *__pyx_v_fe_span;
-  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)
  * 
@@ -870,7 +871,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_18_alignments {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":125
  * 
  * def decode_words(syms):
  *     return tuple(sym_tostring(sym) for sym in syms)             # <<<<<<<<<<<<<<
@@ -950,7 +951,7 @@ struct __pyx_obj_3_sa_Rule {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
  * def make_lattice(words):
  *     word_ids = (sym_fromstring(word, True) for word in words)
  *     return tuple(((word, None, 1), ) for word in word_ids)             # <<<<<<<<<<<<<<
@@ -967,6 +968,29 @@ struct __pyx_obj_3_sa___pyx_scope_struct_6_genexpr {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1879
+ *     # Aggregate stats from a training instance
+ *     # (Extract rules, update counts)
+ *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
+ * 
+ *         self.online = True
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance {
+  PyObject_HEAD
+  PyObject *__pyx_v_al;
+  PyObject *__pyx_v_cover;
+  PyObject *__pyx_v_e_nt_cover;
+  PyObject *__pyx_v_e_words;
+  PyObject *__pyx_v_ef_span;
+  PyObject *__pyx_v_extract;
+  PyObject *__pyx_v_f_len;
+  PyObject *__pyx_v_f_words;
+  PyObject *__pyx_v_fe_span;
+  PyObject *__pyx_v_rules;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
 /* "/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:
@@ -983,6 +1007,14 @@ struct __pyx_obj_3_sa___pyx_scope_struct_2_genexpr {
   PyObject *(*__pyx_t_2)(PyObject *);
 };
 
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":84
+ * # in the suffix array; if discontiguous, it is the set of
+ * # actual locations (packed into an array)
+ * cdef class PhraseLocation:             # <<<<<<<<<<<<<<
+ *     cdef int sa_low
+ *     cdef int sa_high
+ */
 struct __pyx_obj_3_sa_PhraseLocation {
   PyObject_HEAD
   struct __pyx_vtabstruct_3_sa_PhraseLocation *__pyx_vtab;
@@ -1010,30 +1042,30 @@ struct __pyx_obj_3_sa___pyx_scope_struct_15___iter__ {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2057
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2049
  * 
- *     # Rule string from rule
- *     def fmt_rule(self, f, e, a):             # <<<<<<<<<<<<<<
- *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)
- *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
+ *     # Create a rule from source, target, non-terminals, and alignments
+ *     def form_rule(self, f_i, e_i, f_span, e_span, nt, al):             # <<<<<<<<<<<<<<
+ * 
+ *         # Substitute in non-terminals
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule {
+struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule {
   PyObject_HEAD
-  PyObject *__pyx_v_a;
+  PyObject *__pyx_v_links;
   struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2058
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2115
  *     # Rule string from rule
  *     def fmt_rule(self, f, e, a):
  *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)             # <<<<<<<<<<<<<<
  *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
  * 
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr {
+struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *__pyx_outer_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *__pyx_outer_scope;
   PyObject *__pyx_v_packed;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
@@ -1041,6 +1073,33 @@ struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2114
+ * 
+ *     # Rule string from rule
+ *     def fmt_rule(self, f, e, a):             # <<<<<<<<<<<<<<
+ *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)
+ *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule {
+  PyObject_HEAD
+  PyObject *__pyx_v_a;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
+/* "/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_28___str__ {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/data_array.pxi":72
  *             self.read_text_data(fp)
  * 
@@ -1055,7 +1114,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_1_read_bitext {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":124
  *     return tuple(sym_fromstring(word, True) for word in words)
  * 
  * def decode_words(syms):             # <<<<<<<<<<<<<<
@@ -1081,7 +1140,7 @@ struct __pyx_obj_3_sa_FeatureVector {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":114
  *     return tuple(((word, None, 1), ) for word in word_ids)
  * 
  * def decode_lattice(lattice):             # <<<<<<<<<<<<<<
@@ -1094,7 +1153,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_7_decode_lattice {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":954
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":972
  *         return sorted(result);
  * 
  *     def input(self, fwords, meta):             # <<<<<<<<<<<<<<
@@ -1118,12 +1177,14 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   PyObject *__pyx_v_extract_stop;
   PyObject *__pyx_v_extracts;
   PyObject *__pyx_v_f;
+  PyObject *__pyx_v_f_syms;
   PyObject *__pyx_v_fcount;
   int __pyx_v_flen;
   PyObject *__pyx_v_fphrases;
   PyObject *__pyx_v_frontier;
   PyObject *__pyx_v_frontier_nodes;
   PyObject *__pyx_v_fwords;
+  PyObject *__pyx_v_genexpr;
   struct __pyx_obj_3_sa_Phrase *__pyx_v_hiero_phrase;
   long __pyx_v_hit;
   int __pyx_v_i;
@@ -1132,6 +1193,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   int __pyx_v_j;
   int __pyx_v_k;
   PyObject *__pyx_v_key;
+  PyObject *__pyx_v_lex_i;
+  PyObject *__pyx_v_lex_j;
   PyObject *__pyx_v_loc;
   PyObject *__pyx_v_locs;
   int __pyx_v_lookup_required;
@@ -1154,6 +1217,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   PyObject *__pyx_v_sa_range;
   struct __pyx_obj_3_sa_IntList *__pyx_v_sample;
   struct __pyx_obj_3_sa_FeatureVector *__pyx_v_scores;
+  PyObject *__pyx_v_seen_phrases;
   struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
   PyObject *__pyx_v_spanlen;
   float __pyx_v_start_time;
@@ -1177,6 +1241,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   Py_ssize_t __pyx_t_7;
   Py_ssize_t __pyx_t_8;
   Py_ssize_t __pyx_t_9;
+  PyObject *(*__pyx_t_10)(PyObject *);
+  PyObject *(*__pyx_t_11)(PyObject *);
 };
 
 
@@ -1222,7 +1288,7 @@ struct __pyx_obj_3_sa_BitSet {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":96
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":106
  * 
  * 
  * cdef class Sampler:             # <<<<<<<<<<<<<<
@@ -1250,7 +1316,24 @@ struct __pyx_obj_3_sa_StringMap {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":36
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2161
+ *     # (Used for EGivenFCoherent)
+ *     # Return set of (fphrase, lex_i, lex_j)
+ *     def get_f_phrases(self, f_words):             # <<<<<<<<<<<<<<
+ * 
+ *         f_len = len(f_words)
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases {
+  PyObject_HEAD
+  PyObject *__pyx_v_extract;
+  PyObject *__pyx_v_f_len;
+  PyObject *__pyx_v_f_words;
+  PyObject *__pyx_v_phrases;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":46
  * cdef int EPSILON = sym_fromstring('*EPS*', True)
  * 
  * cdef class TrieNode:             # <<<<<<<<<<<<<<
@@ -1263,7 +1346,7 @@ struct __pyx_obj_3_sa_TrieNode {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":42
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":52
  *         self.children = {}
  * 
  * cdef class ExtendedTrieNode(TrieNode):             # <<<<<<<<<<<<<<
@@ -1293,20 +1376,7 @@ 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
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  * 
  * def decode_lattice(lattice):
  *     return tuple((sym_tostring(sym), weight, dist) for (sym, weight, dist) in arc             # <<<<<<<<<<<<<<
@@ -1333,8 +1403,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_8_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
- *     return ALPHABET.fromstring(string, terminal)
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
+ *     return sym_isvar(sym)
  * 
  * def make_lattice(words):             # <<<<<<<<<<<<<<
  *     word_ids = (sym_fromstring(word, True) for word in words)
@@ -1347,23 +1417,6 @@ 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
  * 
@@ -1381,6 +1434,22 @@ struct __pyx_obj_3_sa_Phrase {
 };
 
 
+/* "/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_27___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/int_list.pxi":81
  *         free(self.arr)
  * 
@@ -1397,7 +1466,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct____iter__ {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":53
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":63
  * 
  * 
  * cdef class TrieTable:             # <<<<<<<<<<<<<<
@@ -1412,7 +1481,7 @@ struct __pyx_obj_3_sa_TrieTable {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
  * 
  * def make_lattice(words):
  *     word_ids = (sym_fromstring(word, True) for word in words)             # <<<<<<<<<<<<<<
@@ -1429,7 +1498,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_5_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":119
  * 
  * def decode_sentence(lattice):
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)             # <<<<<<<<<<<<<<
@@ -1447,22 +1516,6 @@ struct __pyx_obj_3_sa___pyx_scope_struct_10_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_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;
-};
-
-
 /* "_sa.pxd":3
  * from libc.stdio cimport FILE
  * 
@@ -1596,7 +1649,7 @@ struct __pyx_vtabstruct_3_sa_Phrase {
 static struct __pyx_vtabstruct_3_sa_Phrase *__pyx_vtabptr_3_sa_Phrase;
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":74
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":84
  * # in the suffix array; if discontiguous, it is the set of
  * # actual locations (packed into an array)
  * cdef class PhraseLocation:             # <<<<<<<<<<<<<<
@@ -1694,7 +1747,7 @@ struct __pyx_vtabstruct_3_sa_Alphabet {
 static struct __pyx_vtabstruct_3_sa_Alphabet *__pyx_vtabptr_3_sa_Alphabet;
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":218
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":228
  * 
  * 
  * cdef class HieroCachingRuleFactory:             # <<<<<<<<<<<<<<
@@ -2370,14 +2423,16 @@ 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_add_instance = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21_form_rule = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_23_fmt_rule = 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 PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_20_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21_add_instance = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_22_form_rule = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_23_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_24_fmt_rule = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_25_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_26_get_f_phrases = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_27___iter__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_28___str__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_29_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];
@@ -2541,17 +2596,18 @@ static int __pyx_pf_3_sa_8Alphabet___cinit__(struct __pyx_obj_3_sa_Alphabet *__p
 static void __pyx_pf_3_sa_8Alphabet_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_8Alphabet_9terminals___get__(struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_8Alphabet_12nonterminals___get__(struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3_sa_2isvar(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_sym); /* proto */
 static PyObject *__pyx_pf_3_sa_12make_lattice_genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_3_sa_12make_lattice_3genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_2make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
+static PyObject *__pyx_pf_3_sa_4make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
 static PyObject *__pyx_pf_3_sa_14decode_lattice_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_4decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
+static PyObject *__pyx_pf_3_sa_6decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
 static PyObject *__pyx_pf_3_sa_15decode_sentence_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_6decode_sentence(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
+static PyObject *__pyx_pf_3_sa_8decode_sentence(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
 static PyObject *__pyx_pf_3_sa_12encode_words_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_8encode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
+static PyObject *__pyx_pf_3_sa_10encode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
 static PyObject *__pyx_pf_3_sa_12decode_words_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_10decode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_syms); /* proto */
+static PyObject *__pyx_pf_3_sa_12decode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_syms); /* proto */
 static int __pyx_pf_3_sa_6Phrase___cinit__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self, PyObject *__pyx_v_words); /* proto */
 static void __pyx_pf_3_sa_6Phrase_2__dealloc__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_6Phrase_4__str__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self); /* proto */
@@ -2643,6 +2699,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
 static PyObject *__pyx_lambda_funcdef_lambda5(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda4(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda6(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_5input_2genexpr(PyObject *__pyx_self); /* 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_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_min_bound, 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 */
@@ -2653,9 +2710,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_27form_rule(struct __py
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8fmt_rule_genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_29fmt_rule(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f, PyObject *__pyx_v_e, PyObject *__pyx_v_a); /* 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_inc(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
-static PyObject *__pyx_pf_3_sa_16span_dec(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_33dump_online_rules(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_35online_ctx_lookup(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f, PyObject *__pyx_v_e); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_13get_f_phrases_extract(PyObject *__pyx_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_f_j, PyObject *__pyx_v_lex_i, PyObject *__pyx_v_lex_j, PyObject *__pyx_v_wc, PyObject *__pyx_v_ntc, PyObject *__pyx_v_syms); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_37get_f_phrases(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words); /* proto */
+static PyObject *__pyx_pf_3_sa_14span_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_16span_inc(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_18span_dec(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* 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 */
@@ -2766,11 +2827,12 @@ static char __pyx_k_138[] = "[X] ||| {0} ||| {1} ||| {2}";
 static char __pyx_k_139[] = "------------------------------";
 static char __pyx_k_141[] = "         Online Stats         ";
 static char __pyx_k_145[] = " : ";
-static char __pyx_k_151[] = "%s=%s";
-static char __pyx_k_154[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
-static char __pyx_k_155[] = "cdec.sa";
-static char __pyx_k_159[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
-static char __pyx_k_168[] = "*EPS*";
+static char __pyx_k_151[] = "OnlineFeatureContext";
+static char __pyx_k_154[] = "%s=%s";
+static char __pyx_k_157[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
+static char __pyx_k_158[] = "cdec.sa";
+static char __pyx_k_162[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
+static char __pyx_k_173[] = "*EPS*";
 static char __pyx_k__FE[] = "FE";
 static char __pyx_k__al[] = "al";
 static char __pyx_k__fe[] = "fe";
@@ -2788,6 +2850,7 @@ 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__get[] = "get";
 static char __pyx_k__isa[] = "isa";
 static char __pyx_k__ito[] = "ito";
 static char __pyx_k__key[] = "key";
@@ -2795,10 +2858,12 @@ static char __pyx_k__lhs[] = "lhs";
 static char __pyx_k__low[] = "low";
 static char __pyx_k__map[] = "map";
 static char __pyx_k__max[] = "max";
+static char __pyx_k__ntc[] = "ntc";
 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__sym[] = "sym";
 static char __pyx_k__vec[] = "vec";
 static char __pyx_k__zip[] = "zip";
 static char __pyx_k__NULL[] = "NULL";
@@ -2827,6 +2892,9 @@ static char __pyx_k__eword[] = "eword";
 static char __pyx_k__fword[] = "fword";
 static char __pyx_k__ifrom[] = "ifrom";
 static char __pyx_k__index[] = "index";
+static char __pyx_k__isvar[] = "isvar";
+static char __pyx_k__lex_i[] = "lex_i";
+static char __pyx_k__lex_j[] = "lex_j";
 static char __pyx_k__links[] = "links";
 static char __pyx_k__merge[] = "merge";
 static char __pyx_k__range[] = "range";
@@ -2854,6 +2922,7 @@ 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";
+static char __pyx_k__online[] = "online";
 static char __pyx_k__phrase[] = "phrase";
 static char __pyx_k__q3sort[] = "q3sort";
 static char __pyx_k__sa_low[] = "sa_low";
@@ -2867,6 +2936,8 @@ static char __pyx_k__unlink[] = "unlink";
 static char __pyx_k__Counter[] = "Counter";
 static char __pyx_k__advance[] = "advance";
 static char __pyx_k__arr_low[] = "arr_low";
+static char __pyx_k__bilex_e[] = "bilex_e";
+static char __pyx_k__bilex_f[] = "bilex_f";
 static char __pyx_k__collect[] = "collect";
 static char __pyx_k__e_words[] = "e_words";
 static char __pyx_k__edarray[] = "edarray";
@@ -2893,6 +2964,7 @@ static char __pyx_k____name__[] = "__name__";
 static char __pyx_k____test__[] = "__test__";
 static char __pyx_k___columns[] = "_columns";
 static char __pyx_k__arr_high[] = "arr_high";
+static char __pyx_k__bilex_fe[] = "bilex_fe";
 static char __pyx_k__category[] = "category";
 static char __pyx_k__children[] = "children";
 static char __pyx_k__curr_idx[] = "curr_idx";
@@ -2927,6 +2999,8 @@ static char __pyx_k__increment[] = "increment";
 static char __pyx_k__iteritems[] = "iteritems";
 static char __pyx_k__itertools[] = "itertools";
 static char __pyx_k__min_bound[] = "min_bound";
+static char __pyx_k__new_lex_i[] = "new_lex_i";
+static char __pyx_k__new_lex_j[] = "new_lex_j";
 static char __pyx_k__paircount[] = "paircount";
 static char __pyx_k__partition[] = "partition";
 static char __pyx_k__reachable[] = "reachable";
@@ -2971,6 +3045,7 @@ static char __pyx_k__StopIteration[] = "StopIteration";
 static char __pyx_k__alphabet_size[] = "alphabet_size";
 static char __pyx_k__from_iterable[] = "from_iterable";
 static char __pyx_k__fsample_count[] = "fsample_count";
+static char __pyx_k__get_f_phrases[] = "get_f_phrases";
 static char __pyx_k__new_min_bound[] = "new_min_bound";
 static char __pyx_k__test_sentence[] = "test_sentence";
 static char __pyx_k__tight_phrases[] = "tight_phrases";
@@ -2992,8 +3067,10 @@ static char __pyx_k__max_initial_size[] = "max_initial_size";
 static char __pyx_k__max_nonterminals[] = "max_nonterminals";
 static char __pyx_k__reachable_buffer[] = "reachable_buffer";
 static char __pyx_k__use_collocations[] = "use_collocations";
+static char __pyx_k__dump_online_rules[] = "dump_online_rules";
 static char __pyx_k__max_target_chunks[] = "max_target_chunks";
 static char __pyx_k__max_target_length[] = "max_target_length";
+static char __pyx_k__online_ctx_lookup[] = "online_ctx_lookup";
 static char __pyx_k__train_min_gap_size[] = "train_min_gap_size";
 static char __pyx_k__pattern2phrase_plus[] = "pattern2phrase_plus";
 static PyObject *__pyx_kp_s_1;
@@ -3035,10 +3112,11 @@ static PyObject *__pyx_kp_s_139;
 static PyObject *__pyx_kp_s_14;
 static PyObject *__pyx_kp_s_141;
 static PyObject *__pyx_kp_s_145;
-static PyObject *__pyx_kp_s_151;
+static PyObject *__pyx_n_s_151;
 static PyObject *__pyx_kp_s_154;
-static PyObject *__pyx_kp_s_155;
-static PyObject *__pyx_kp_s_159;
+static PyObject *__pyx_kp_s_157;
+static PyObject *__pyx_kp_s_158;
+static PyObject *__pyx_kp_s_162;
 static PyObject *__pyx_kp_s_18;
 static PyObject *__pyx_kp_s_2;
 static PyObject *__pyx_kp_s_21;
@@ -3125,6 +3203,9 @@ static PyObject *__pyx_n_s__arity;
 static PyObject *__pyx_n_s__arr;
 static PyObject *__pyx_n_s__arr_high;
 static PyObject *__pyx_n_s__arr_low;
+static PyObject *__pyx_n_s__bilex_e;
+static PyObject *__pyx_n_s__bilex_f;
+static PyObject *__pyx_n_s__bilex_fe;
 static PyObject *__pyx_n_s__by_slack_factor;
 static PyObject *__pyx_n_s__category;
 static PyObject *__pyx_n_s__chain;
@@ -3140,6 +3221,7 @@ static PyObject *__pyx_n_s__decode_sentence;
 static PyObject *__pyx_n_s__decode_words;
 static PyObject *__pyx_n_s__defaultdict;
 static PyObject *__pyx_n_s__dist;
+static PyObject *__pyx_n_s__dump_online_rules;
 static PyObject *__pyx_n_s__e;
 static PyObject *__pyx_n_s__e_i;
 static PyObject *__pyx_n_s__e_j;
@@ -3181,9 +3263,11 @@ static PyObject *__pyx_n_s__fword;
 static PyObject *__pyx_n_s__fwords;
 static PyObject *__pyx_n_s__gc;
 static PyObject *__pyx_n_s__genexpr;
+static PyObject *__pyx_n_s__get;
 static PyObject *__pyx_n_s__getLogger;
 static PyObject *__pyx_n_s__get_e_id;
 static PyObject *__pyx_n_s__get_f_id;
+static PyObject *__pyx_n_s__get_f_phrases;
 static PyObject *__pyx_n_s__get_id;
 static PyObject *__pyx_n_s__get_next_states;
 static PyObject *__pyx_n_s__get_word;
@@ -3203,6 +3287,7 @@ static PyObject *__pyx_n_s__input_match;
 static PyObject *__pyx_n_s__input_span;
 static PyObject *__pyx_n_s__insert;
 static PyObject *__pyx_n_s__isa;
+static PyObject *__pyx_n_s__isvar;
 static PyObject *__pyx_n_s__iteritems;
 static PyObject *__pyx_n_s__itertools;
 static PyObject *__pyx_n_s__itervalues;
@@ -3212,6 +3297,8 @@ 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__lex_i;
+static PyObject *__pyx_n_s__lex_j;
 static PyObject *__pyx_n_s__lhs;
 static PyObject *__pyx_n_s__link;
 static PyObject *__pyx_n_s__link_i;
@@ -3240,14 +3327,19 @@ 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__new_lex_i;
+static PyObject *__pyx_n_s__new_lex_j;
 static PyObject *__pyx_n_s__new_min_bound;
 static PyObject *__pyx_n_s__next_states;
 static PyObject *__pyx_n_s__nt;
 static PyObject *__pyx_n_s__nt_collision;
 static PyObject *__pyx_n_s__nt_open;
+static PyObject *__pyx_n_s__ntc;
 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__online;
+static PyObject *__pyx_n_s__online_ctx_lookup;
 static PyObject *__pyx_n_s__open;
 static PyObject *__pyx_n_s__pad;
 static PyObject *__pyx_n_s__paircount;
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 static PyObject *__pyx_n_s__stats;
 static PyObject *__pyx_n_s__stop;
 static PyObject *__pyx_n_s__suffix_link;
+static PyObject *__pyx_n_s__sym;
 static PyObject *__pyx_n_s__syms;
 static PyObject *__pyx_n_s__test_sentence;
 static PyObject *__pyx_n_s__tight_phrases;
@@ -3397,25 +3490,29 @@ static PyObject *__pyx_k_tuple_148;
 static PyObject *__pyx_k_tuple_149;
 static PyObject *__pyx_k_tuple_150;
 static PyObject *__pyx_k_tuple_152;
-static PyObject *__pyx_k_tuple_156;
-static PyObject *__pyx_k_tuple_157;
+static PyObject *__pyx_k_tuple_155;
+static PyObject *__pyx_k_tuple_159;
 static PyObject *__pyx_k_tuple_160;
-static PyObject *__pyx_k_tuple_162;
-static PyObject *__pyx_k_tuple_164;
-static PyObject *__pyx_k_tuple_166;
+static PyObject *__pyx_k_tuple_163;
+static PyObject *__pyx_k_tuple_165;
+static PyObject *__pyx_k_tuple_167;
 static PyObject *__pyx_k_tuple_169;
 static PyObject *__pyx_k_tuple_171;
-static PyObject *__pyx_k_tuple_173;
+static PyObject *__pyx_k_tuple_174;
+static PyObject *__pyx_k_tuple_176;
+static PyObject *__pyx_k_tuple_178;
 static PyObject *__pyx_k_codeobj_135;
 static PyObject *__pyx_k_codeobj_153;
-static PyObject *__pyx_k_codeobj_158;
+static PyObject *__pyx_k_codeobj_156;
 static PyObject *__pyx_k_codeobj_161;
-static PyObject *__pyx_k_codeobj_163;
-static PyObject *__pyx_k_codeobj_165;
-static PyObject *__pyx_k_codeobj_167;
+static PyObject *__pyx_k_codeobj_164;
+static PyObject *__pyx_k_codeobj_166;
+static PyObject *__pyx_k_codeobj_168;
 static PyObject *__pyx_k_codeobj_170;
 static PyObject *__pyx_k_codeobj_172;
-static PyObject *__pyx_k_codeobj_174;
+static PyObject *__pyx_k_codeobj_175;
+static PyObject *__pyx_k_codeobj_177;
+static PyObject *__pyx_k_codeobj_179;
 
 /* "_sa.pyx":5
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@@ -23624,7 +23721,7 @@ static int __pyx_f_3_sa_sym_fromstring(char *__pyx_v_string, int __pyx_v_termina
  * cdef int sym_fromstring(char* string, bint terminal):
  *     return ALPHABET.fromstring(string, terminal)             # <<<<<<<<<<<<<<
  * 
- * def make_lattice(words):
+ * def isvar(sym):
  */
   __pyx_r = ((struct __pyx_vtabstruct_3_sa_Alphabet *)__pyx_v_3_sa_ALPHABET->__pyx_vtab)->fromstring(__pyx_v_3_sa_ALPHABET, __pyx_v_string, __pyx_v_terminal);
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@@ -23636,19 +23733,76 @@ static int __pyx_f_3_sa_sym_fromstring(char *__pyx_v_string, int __pyx_v_termina
 }
 
 /* Python wrapper */
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-static PyObject *__pyx_pw_3_sa_3make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words) {
+static PyObject *__pyx_pw_3_sa_3isvar(PyObject *__pyx_self, PyObject *__pyx_v_sym); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_3isvar = {__Pyx_NAMESTR("isvar"), (PyCFunction)__pyx_pw_3_sa_3isvar, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_3isvar(PyObject *__pyx_self, PyObject *__pyx_v_sym) {
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("isvar (wrapper)", 0);
+  __pyx_r = __pyx_pf_3_sa_2isvar(__pyx_self, ((PyObject *)__pyx_v_sym));
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
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+ * 
+ * def isvar(sym):             # <<<<<<<<<<<<<<
+ *     return sym_isvar(sym)
+ * 
+ */
+
+static PyObject *__pyx_pf_3_sa_2isvar(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_sym) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  int __pyx_t_1;
+  PyObject *__pyx_t_2 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("isvar", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+ * 
+ * def isvar(sym):
+ *     return sym_isvar(sym)             # <<<<<<<<<<<<<<
+ * 
+ * def make_lattice(words):
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_sym); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_isvar(__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __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_2);
+  __Pyx_AddTraceback("_sa.isvar", __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_5make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_5make_lattice = {__Pyx_NAMESTR("make_lattice"), (PyCFunction)__pyx_pw_3_sa_5make_lattice, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_5make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words) {
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+  __pyx_r = __pyx_pf_3_sa_4make_lattice(__pyx_self, ((PyObject *)__pyx_v_words));
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 static PyObject *__pyx_gb_3_sa_12make_lattice_2generator7(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
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  * def make_lattice(words):
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+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_words)) { __Pyx_RaiseClosureNameError("words"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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+    __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_fromstring(__pyx_t_5, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
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 /* Python wrapper */
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":113
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-          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         break;
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@@ -24169,7 +24323,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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         if (size > 3) __Pyx_RaiseTooManyValuesError(3);
         else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-        {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       #if CYTHON_COMPILING_IN_CPYTHON
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@@ -24185,15 +24339,15 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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-      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_7 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_8 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __pyx_t_9 = Py_TYPE(__pyx_t_8)->tp_iternext;
@@ -24203,7 +24357,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
       __Pyx_GOTREF(__pyx_t_6);
       index = 2; __pyx_t_7 = __pyx_t_9(__pyx_t_8); if (unlikely(!__pyx_t_7)) goto __pyx_L6_unpacking_failed;
       __Pyx_GOTREF(__pyx_t_7);
-      if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 3) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 3) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
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@@ -24211,7 +24365,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
       __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
       __pyx_t_9 = NULL;
       if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-      {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __pyx_L7_unpacking_done:;
     }
     __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_sym);
@@ -24230,19 +24384,19 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
     __pyx_cur_scope->__pyx_v_dist = __pyx_t_7;
     __pyx_t_7 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":113
+    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
  * def decode_lattice(lattice):
  *     return tuple((sym_tostring(sym), weight, dist) for (sym, weight, dist) in arc
  *             for arc in node for node in lattice)             # <<<<<<<<<<<<<<
  * 
  * def decode_sentence(lattice):
  */
-    if (unlikely(!__pyx_cur_scope->__pyx_v_node)) { __Pyx_RaiseUnboundLocalError("node"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    if (unlikely(!__pyx_cur_scope->__pyx_v_node)) { __Pyx_RaiseUnboundLocalError("node"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
     if (PyList_CheckExact(__pyx_cur_scope->__pyx_v_node) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_v_node)) {
       __pyx_t_4 = __pyx_cur_scope->__pyx_v_node; __Pyx_INCREF(__pyx_t_4); __pyx_t_10 = 0;
       __pyx_t_11 = NULL;
     } else {
-      __pyx_t_10 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_node); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_node); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __pyx_t_11 = Py_TYPE(__pyx_t_4)->tp_iternext;
     }
@@ -24250,23 +24404,23 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
       if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_4)) {
         if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_4)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_7 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_4)) {
         if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_4)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else {
         __pyx_t_7 = __pyx_t_11(__pyx_t_4);
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             if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-            else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           break;
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@@ -24277,12 +24431,12 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
       __Pyx_GIVEREF(__pyx_t_7);
       __pyx_cur_scope->__pyx_v_arc = __pyx_t_7;
       __pyx_t_7 = 0;
-      if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice)) { __Pyx_RaiseClosureNameError("lattice"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice)) { __Pyx_RaiseClosureNameError("lattice"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
       if (PyList_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice)) {
         __pyx_t_7 = __pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice; __Pyx_INCREF(__pyx_t_7); __pyx_t_12 = 0;
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       } else {
-        __pyx_t_12 = -1; __pyx_t_7 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_12 = -1; __pyx_t_7 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
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@@ -24290,23 +24444,23 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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           #if CYTHON_COMPILING_IN_CPYTHON
-          __pyx_t_6 = PyList_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_6 = PyList_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #else
-          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #endif
         } else if (!__pyx_t_13 && PyTuple_CheckExact(__pyx_t_7)) {
           if (__pyx_t_12 >= PyTuple_GET_SIZE(__pyx_t_7)) break;
           #if CYTHON_COMPILING_IN_CPYTHON
-          __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #else
-          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #endif
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               if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-              else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24318,17 +24472,17 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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         __pyx_t_6 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
+        /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  * 
  * def decode_lattice(lattice):
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-        __pyx_t_14 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_sym); if (unlikely((__pyx_t_14 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-        __pyx_t_6 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_14)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_14 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_sym); if (unlikely((__pyx_t_14 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_6 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_14)); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __Pyx_GIVEREF(((PyObject *)__pyx_t_6));
@@ -24374,7 +24528,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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-        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return NULL;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":114
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  * def decode_lattice(lattice):             # <<<<<<<<<<<<<<
@@ -24407,7 +24561,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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  */
 
-static PyObject *__pyx_pf_3_sa_4decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice) {
+static PyObject *__pyx_pf_3_sa_6decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice) {
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@@ -24427,7 +24581,7 @@ static PyObject *__pyx_pf_3_sa_4decode_lattice(CYTHON_UNUSED PyObject *__pyx_sel
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_lattice);
 
-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  * 
  * def decode_lattice(lattice):
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+  __pyx_t_1 = __pyx_pf_3_sa_14decode_lattice_genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 /* Python wrapper */
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":39
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":40
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+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 50; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":37
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":47
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":48
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":49
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":50
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":60
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":43
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":44
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":45
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+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":57
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":58
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":59
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+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_extended); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = __Pyx_PyObject_IsTrue(__pyx_v_extended); if (unlikely(__pyx_t_2 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":61
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":63
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":55
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":87
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+      __pyx_v_sa_low = __Pyx_PyInt_AsInt(values[0]); if (unlikely((__pyx_v_sa_low == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":86
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":88
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":89
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":90
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":91
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":92
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":93
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":104
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":105
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  *         self.sample_size = sample_size
  *         self.sa = fsarray.sa             # <<<<<<<<<<<<<<
@@ -37817,7 +37971,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
   __Pyx_DECREF(((PyObject *)__pyx_v_self->sa));
   __pyx_v_self->sa = __pyx_v_fsarray->sa;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":106
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":116
  *         self.sample_size = sample_size
  *         self.sa = fsarray.sa
  *         if sample_size > 0:             # <<<<<<<<<<<<<<
@@ -37827,21 +37981,21 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
   __pyx_t_1 = (__pyx_v_sample_size > 0);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":107
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":117
  *         self.sa = fsarray.sa
  *         if sample_size > 0:
  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)             # <<<<<<<<<<<<<<
  *         else:
  *             logger.info("Sampling strategy: no sampling")
  */
-    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __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 = 117; __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 = 107; __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 = 117; __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_sample_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong(__pyx_v_sample_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __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 = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_INCREF(((PyObject *)__pyx_kp_s_100));
     PyTuple_SET_ITEM(__pyx_t_4, 0, ((PyObject *)__pyx_kp_s_100));
@@ -37849,7 +38003,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
     PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_t_2);
     __Pyx_GIVEREF(__pyx_t_2);
     __pyx_t_2 = 0;
-    __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __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_4)); __pyx_t_4 = 0;
@@ -37858,19 +38012,19 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":109
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":119
  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)
  *         else:
  *             logger.info("Sampling strategy: no sampling")             # <<<<<<<<<<<<<<
  * 
  *     def sample(self, PhraseLocation phrase_location):
  */
-    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __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 = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __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_Call(__pyx_t_4, ((PyObject *)__pyx_k_tuple_102), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_k_tuple_102), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -37897,7 +38051,7 @@ static PyObject *__pyx_pw_3_sa_7Sampler_3sample(PyObject *__pyx_v_self, PyObject
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("sample (wrapper)", 0);
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_phrase_location), __pyx_ptype_3_sa_PhraseLocation, 1, "phrase_location", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_phrase_location), __pyx_ptype_3_sa_PhraseLocation, 1, "phrase_location", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __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));
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -37907,7 +38061,7 @@ static PyObject *__pyx_pw_3_sa_7Sampler_3sample(PyObject *__pyx_v_self, PyObject
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":111
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":121
  *             logger.info("Sampling strategy: no sampling")
  * 
  *     def sample(self, PhraseLocation phrase_location):             # <<<<<<<<<<<<<<
@@ -37934,19 +38088,19 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("sample", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":124
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":134
  *         cdef int num_locations, val, j
  * 
  *         sample = IntList()             # <<<<<<<<<<<<<<
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
  */
-  __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 = 124; __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 = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_sample = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":125
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":135
  * 
  *         sample = IntList()
  *         if phrase_location.arr is None:             # <<<<<<<<<<<<<<
@@ -37956,7 +38110,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   __pyx_t_2 = (((PyObject *)__pyx_v_phrase_location->arr) == Py_None);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":126
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":136
  *         sample = IntList()
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low             # <<<<<<<<<<<<<<
@@ -37965,7 +38119,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
     __pyx_v_num_locations = (__pyx_v_phrase_location->sa_high - __pyx_v_phrase_location->sa_low);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":127
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":137
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
  *             if self.sample_size == -1 or num_locations <= self.sample_size:             # <<<<<<<<<<<<<<
@@ -37981,7 +38135,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":128
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":138
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
  *             if self.sample_size == -1 or num_locations <= self.sample_size:
  *                 sample._extend_arr(self.sa.arr + phrase_location.sa_low, num_locations)             # <<<<<<<<<<<<<<
@@ -37993,7 +38147,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":130
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":140
  *                 sample._extend_arr(self.sa.arr + phrase_location.sa_low, num_locations)
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)             # <<<<<<<<<<<<<<
@@ -38002,11 +38156,11 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       if (unlikely(((double)__pyx_v_self->sample_size) == 0)) {
         PyErr_Format(PyExc_ZeroDivisionError, "float division");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       __pyx_v_stepsize = (((double)__pyx_v_num_locations) / ((double)__pyx_v_self->sample_size));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":131
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":141
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.sa_low             # <<<<<<<<<<<<<<
@@ -38015,7 +38169,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       __pyx_v_i = __pyx_v_phrase_location->sa_low;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":132
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":142
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.sa_low
  *                 while i < phrase_location.sa_high and sample.len < self.sample_size:             # <<<<<<<<<<<<<<
@@ -38032,7 +38186,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":135
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":145
  *                     '''Note: int(i) not guaranteed to have the desired
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:             # <<<<<<<<<<<<<<
@@ -38042,7 +38196,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         __pyx_t_3 = (fmod(__pyx_v_i, 1.0) > 0.5);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":136
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":146
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:
  *                         val = int(ceil(i))             # <<<<<<<<<<<<<<
@@ -38054,7 +38208,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":138
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":148
  *                         val = int(ceil(i))
  *                     else:
  *                         val = int(floor(i))             # <<<<<<<<<<<<<<
@@ -38065,7 +38219,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         __pyx_L7:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":139
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":149
  *                     else:
  *                         val = int(floor(i))
  *                     sample._append(self.sa.arr[val])             # <<<<<<<<<<<<<<
@@ -38074,7 +38228,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_sample->__pyx_vtab)->_append(__pyx_v_sample, (__pyx_v_self->sa->arr[__pyx_v_val]));
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":140
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":150
  *                         val = int(floor(i))
  *                     sample._append(self.sa.arr[val])
  *                     i = i + stepsize             # <<<<<<<<<<<<<<
@@ -38089,7 +38243,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":142
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":152
  *                     i = i + stepsize
  *         else:
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns             # <<<<<<<<<<<<<<
@@ -38099,15 +38253,15 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     __pyx_t_5 = (__pyx_v_phrase_location->arr_high - __pyx_v_phrase_location->arr_low);
     if (unlikely(__pyx_v_phrase_location->num_subpatterns == 0)) {
       PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     }
     else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_phrase_location->num_subpatterns == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_5))) {
       PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     }
     __pyx_v_num_locations = __Pyx_div_int(__pyx_t_5, __pyx_v_phrase_location->num_subpatterns);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":143
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":153
  *         else:
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns
  *             if self.sample_size == -1 or num_locations <= self.sample_size:             # <<<<<<<<<<<<<<
@@ -38123,7 +38277,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":144
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":154
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns
  *             if self.sample_size == -1 or num_locations <= self.sample_size:
  *                 sample = phrase_location.arr             # <<<<<<<<<<<<<<
@@ -38137,7 +38291,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":146
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":156
  *                 sample = phrase_location.arr
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)             # <<<<<<<<<<<<<<
@@ -38146,11 +38300,11 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       if (unlikely(((double)__pyx_v_self->sample_size) == 0)) {
         PyErr_Format(PyExc_ZeroDivisionError, "float division");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 146; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       __pyx_v_stepsize = (((double)__pyx_v_num_locations) / ((double)__pyx_v_self->sample_size));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":147
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":157
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.arr_low             # <<<<<<<<<<<<<<
@@ -38159,7 +38313,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       __pyx_v_i = __pyx_v_phrase_location->arr_low;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":148
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":158
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.arr_low
  *                 while i < num_locations and sample.len < self.sample_size * phrase_location.num_subpatterns:             # <<<<<<<<<<<<<<
@@ -38176,7 +38330,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         if (!__pyx_t_4) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":151
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":161
  *                     '''Note: int(i) not guaranteed to have the desired
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:             # <<<<<<<<<<<<<<
@@ -38186,7 +38340,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         __pyx_t_4 = (fmod(__pyx_v_i, 1.0) > 0.5);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":152
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":162
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:
  *                         val = int(ceil(i))             # <<<<<<<<<<<<<<
@@ -38198,7 +38352,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":154
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":164
  *                         val = int(ceil(i))
  *                     else:
  *                         val = int(floor(i))             # <<<<<<<<<<<<<<
@@ -38209,7 +38363,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         __pyx_L11:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":155
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":165
  *                     else:
  *                         val = int(floor(i))
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)             # <<<<<<<<<<<<<<
@@ -38218,7 +38372,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         __pyx_v_j = (__pyx_v_phrase_location->arr_low + (__pyx_v_val * __pyx_v_phrase_location->num_subpatterns));
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":156
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":166
  *                         val = int(floor(i))
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)             # <<<<<<<<<<<<<<
@@ -38227,7 +38381,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_sample->__pyx_vtab)->_extend_arr(__pyx_v_sample, (__pyx_v_phrase_location->arr->arr + __pyx_v_j), __pyx_v_phrase_location->num_subpatterns);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":157
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":167
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)
  *                     i = i + stepsize             # <<<<<<<<<<<<<<
@@ -38241,7 +38395,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":158
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":168
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)
  *                     i = i + stepsize
  *         return sample             # <<<<<<<<<<<<<<
@@ -38266,7 +38420,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":170
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":180
  * 
  * 
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):             # <<<<<<<<<<<<<<
@@ -38278,7 +38432,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("assign_matching", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":171
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":181
  * 
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):
  *     m.arr = arr             # <<<<<<<<<<<<<<
@@ -38287,7 +38441,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->arr = __pyx_v_arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":172
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":182
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):
  *     m.arr = arr
  *     m.start = start             # <<<<<<<<<<<<<<
@@ -38296,7 +38450,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->start = __pyx_v_start;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":173
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":183
  *     m.arr = arr
  *     m.start = start
  *     m.end = start + step             # <<<<<<<<<<<<<<
@@ -38305,7 +38459,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->end = (__pyx_v_start + __pyx_v_step);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":174
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":184
  *     m.start = start
  *     m.end = start + step
  *     m.sent_id = sent_id_arr[arr[start]]             # <<<<<<<<<<<<<<
@@ -38314,7 +38468,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->sent_id = (__pyx_v_sent_id_arr[(__pyx_v_arr[__pyx_v_start])]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":175
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":185
  *     m.end = start + step
  *     m.sent_id = sent_id_arr[arr[start]]
  *     m.size = step             # <<<<<<<<<<<<<<
@@ -38326,7 +38480,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":178
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":188
  * 
  * 
  * cdef int* append_combined_matching(int* arr, Matching* loc1, Matching* loc2,             # <<<<<<<<<<<<<<
@@ -38343,7 +38497,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   int __pyx_t_2;
   __Pyx_RefNannySetupContext("append_combined_matching", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":182
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":192
  *     cdef int i, new_len
  * 
  *     new_len = result_len[0] + num_subpatterns             # <<<<<<<<<<<<<<
@@ -38352,7 +38506,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   __pyx_v_new_len = ((__pyx_v_result_len[0]) + __pyx_v_num_subpatterns);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":183
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":193
  * 
  *     new_len = result_len[0] + num_subpatterns
  *     arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38361,7 +38515,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":185
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":195
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  * 
  *     for i from 0 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -38371,7 +38525,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   __pyx_t_1 = __pyx_v_loc1->size;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_1; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":186
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":196
  * 
  *     for i from 0 <= i < loc1.size:
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]             # <<<<<<<<<<<<<<
@@ -38381,7 +38535,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
     (__pyx_v_arr[((__pyx_v_result_len[0]) + __pyx_v_i)]) = (__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":187
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":197
  *     for i from 0 <= i < loc1.size:
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]
  *     if num_subpatterns > loc1.size:             # <<<<<<<<<<<<<<
@@ -38391,7 +38545,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   __pyx_t_2 = (__pyx_v_num_subpatterns > __pyx_v_loc1->size);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":188
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":198
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]
  *     if num_subpatterns > loc1.size:
  *         arr[new_len-1] = loc2.arr[loc2.end-1]             # <<<<<<<<<<<<<<
@@ -38403,7 +38557,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":189
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":199
  *     if num_subpatterns > loc1.size:
  *         arr[new_len-1] = loc2.arr[loc2.end-1]
  *     result_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -38412,7 +38566,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   (__pyx_v_result_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":190
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":200
  *         arr[new_len-1] = loc2.arr[loc2.end-1]
  *     result_len[0] = new_len
  *     return arr             # <<<<<<<<<<<<<<
@@ -38428,7 +38582,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":193
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":203
  * 
  * 
  * cdef int* extend_arr(int* arr, int* arr_len, int* appendix, int appendix_len):             # <<<<<<<<<<<<<<
@@ -38442,7 +38596,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("extend_arr", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":196
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":206
  *     cdef int new_len
  * 
  *     new_len = arr_len[0] + appendix_len             # <<<<<<<<<<<<<<
@@ -38451,7 +38605,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   __pyx_v_new_len = ((__pyx_v_arr_len[0]) + __pyx_v_appendix_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":197
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":207
  * 
  *     new_len = arr_len[0] + appendix_len
  *     arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38460,7 +38614,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":198
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":208
  *     new_len = arr_len[0] + appendix_len
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38469,7 +38623,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   memcpy((__pyx_v_arr + (__pyx_v_arr_len[0])), __pyx_v_appendix, (__pyx_v_appendix_len * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":199
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":209
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))
  *     arr_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -38478,7 +38632,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   (__pyx_v_arr_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":200
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":210
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))
  *     arr_len[0] = new_len
  *     return arr             # <<<<<<<<<<<<<<
@@ -38494,7 +38648,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":202
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":212
  *     return arr
  * 
  * cdef int median(int low, int high, int step):             # <<<<<<<<<<<<<<
@@ -38511,7 +38665,7 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("median", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":203
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":213
  * 
  * cdef int median(int low, int high, int step):
  *     return low + (((high - low)/step)/2)*step             # <<<<<<<<<<<<<<
@@ -38521,11 +38675,11 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   __pyx_t_1 = (__pyx_v_high - __pyx_v_low);
   if (unlikely(__pyx_v_step == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 213; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_1))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 213; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_r = (__pyx_v_low + (__Pyx_div_long(__Pyx_div_int(__pyx_t_1, __pyx_v_step), 2) * __pyx_v_step));
   goto __pyx_L0;
@@ -38540,7 +38694,7 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":206
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":216
  * 
  * 
  * cdef void find_comparable_matchings(int low, int high, int* arr, int step, int loc, int* loc_minus, int* loc_plus):             # <<<<<<<<<<<<<<
@@ -38555,7 +38709,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
   int __pyx_t_3;
   __Pyx_RefNannySetupContext("find_comparable_matchings", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":210
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":220
  *     # in which all matchings have the same first index as the one
  *     # starting at loc
  *     loc_plus[0] = loc + step             # <<<<<<<<<<<<<<
@@ -38564,7 +38718,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
  */
   (__pyx_v_loc_plus[0]) = (__pyx_v_loc + __pyx_v_step);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":211
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":221
  *     # starting at loc
  *     loc_plus[0] = loc + step
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:             # <<<<<<<<<<<<<<
@@ -38581,7 +38735,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     }
     if (!__pyx_t_3) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":212
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":222
  *     loc_plus[0] = loc + step
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:
  *         loc_plus[0] = loc_plus[0] + step             # <<<<<<<<<<<<<<
@@ -38591,7 +38745,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     (__pyx_v_loc_plus[0]) = ((__pyx_v_loc_plus[0]) + __pyx_v_step);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":213
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":223
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:
  *         loc_plus[0] = loc_plus[0] + step
  *     loc_minus[0] = loc             # <<<<<<<<<<<<<<
@@ -38600,7 +38754,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
  */
   (__pyx_v_loc_minus[0]) = __pyx_v_loc;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":214
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":224
  *         loc_plus[0] = loc_plus[0] + step
  *     loc_minus[0] = loc
  *     while loc_minus[0]-step >= low and arr[loc_minus[0]-step] == arr[loc]:             # <<<<<<<<<<<<<<
@@ -38617,7 +38771,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     }
     if (!__pyx_t_2) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":215
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":225
  *     loc_minus[0] = loc
  *     while loc_minus[0]-step >= low and arr[loc_minus[0]-step] == arr[loc]:
  *         loc_minus[0] = loc_minus[0] - step             # <<<<<<<<<<<<<<
@@ -38661,7 +38815,7 @@ 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":283
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":295
  *             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,             # <<<<<<<<<<<<<<
@@ -38670,7 +38824,7 @@ 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":291
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":303
  *             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,             # <<<<<<<<<<<<<<
@@ -38679,7 +38833,7 @@ 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":293
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":305
  *             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,             # <<<<<<<<<<<<<<
@@ -38688,7 +38842,7 @@ 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":297
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":309
  *             unsigned min_gap_size=2,
  *             # filename of file containing precomputed collocations
  *             precompute_file=None,             # <<<<<<<<<<<<<<
@@ -38831,7 +38985,7 @@ 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 = 275; __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 = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -38862,10 +39016,10 @@ 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 = 279; __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 = 291; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":279
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":291
  *             Alignment alignment,
  *             # parameter for double-binary search; doesn't seem to matter much
  *             float by_slack_factor=1.0,             # <<<<<<<<<<<<<<
@@ -38875,49 +39029,49 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_by_slack_factor = ((float)1.0);
     }
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-      __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;}
+      __pyx_v_category = PyBytes_AsString(values[2]); if (unlikely((!__pyx_v_category) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 293; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_category = ((char *)__pyx_k_105);
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     __pyx_v_max_chunks = values[3];
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-      __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;}
+      __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 = 297; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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       __pyx_v_max_initial_size = ((unsigned int)10);
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-      __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;}
+      __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 = 299; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-      __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;}
+      __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 = 301; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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     __pyx_v_max_target_length = values[8];
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-      __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;}
+      __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 = 307; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_min_gap_size = ((unsigned int)2);
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     __pyx_v_precompute_file = values[10];
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-      __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;}
+      __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 = 311; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_precompute_secondary_rank = ((unsigned int)20);
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     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 = 301; __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 = 313; __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 = 303; __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 = 315; __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":315
  *             unsigned precompute_rank=100,
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  *             bint require_aligned_terminal=True,             # <<<<<<<<<<<<<<
@@ -38927,10 +39081,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
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-      __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;}
+      __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 = 317; __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":317
  *             bint require_aligned_terminal=True,
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  *             bint require_aligned_chunks=False,             # <<<<<<<<<<<<<<
@@ -38940,20 +39094,20 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_require_aligned_chunks = ((int)0);
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-      __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;}
+      __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 = 319; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_max_initial_size = ((unsigned int)10);
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-      __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;}
+      __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 = 321; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_min_gap_size = ((unsigned int)2);
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-      __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;}
+      __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 = 323; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":311
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
  *             unsigned train_min_gap_size=2,
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  *             bint tight_phrases=True,             # <<<<<<<<<<<<<<
@@ -38963,10 +39117,10 @@ 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 = 313; __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 = 325; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":313
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
  *             bint tight_phrases=True,
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  *             bint use_baeza_yates=True,             # <<<<<<<<<<<<<<
@@ -38976,10 +39130,10 @@ 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 = 315; __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 = 327; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":315
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
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  *             bint use_collocations=True,             # <<<<<<<<<<<<<<
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+      __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 = 329; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":317
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":329
  *             bint use_collocations=True,
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@@ -39004,13 +39158,13 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
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+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 1, 21, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_alignment), __pyx_ptype_3_sa_Alignment, 1, "alignment", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 289; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -39032,7 +39186,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___lambda1(PyOb
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":387
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":405
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+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __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 = 405; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -39092,7 +39246,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_9__cinit___1lambda2(PyO
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":388
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+  __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 = 406; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":393
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+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 411; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":275
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":287
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
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-  __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_t_1 = __Pyx_PyBool_FromLong(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 335; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 335; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_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 = 335; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":324
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":336
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+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 336; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_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 = 336; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 336; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __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 = 336; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":337
  *         self.rules = TrieTable(True) # cache
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  *         if alignment is None:             # <<<<<<<<<<<<<<
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":338
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
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+    __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 = 338; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 326; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 338; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     goto __pyx_L3;
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":339
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")
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   __Pyx_DECREF(((PyObject *)__pyx_v_self->alignment));
   __pyx_v_self->alignment = __pyx_v_alignment;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":331
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":343
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  *         self.max_length = max_length             # <<<<<<<<<<<<<<
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   __pyx_v_self->max_length = __pyx_v_max_length;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":332
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":344
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  *         self.max_nonterminals = max_nonterminals             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":333
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":345
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  *         self.max_nonterminals = max_nonterminals
  *         self.max_initial_size = max_initial_size             # <<<<<<<<<<<<<<
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   __pyx_v_self->max_initial_size = __pyx_v_max_initial_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":334
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":346
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  *         self.max_initial_size = max_initial_size
  *         self.train_max_initial_size = train_max_initial_size             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":335
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
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  *         self.min_gap_size = min_gap_size             # <<<<<<<<<<<<<<
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   __pyx_v_self->min_gap_size = __pyx_v_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":336
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":348
  *         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             # <<<<<<<<<<<<<<
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   __pyx_v_self->train_min_gap_size = __pyx_v_train_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":337
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
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  *         self.train_min_gap_size = train_min_gap_size
  *         self.category = sym_fromstring(category, False)             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":339
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":351
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   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":340
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
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  *         if max_chunks is None:
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@@ -39390,19 +39544,19 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":342
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":354
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-    __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_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 = 354; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":344
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":356
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":345
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":357
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   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":359
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  *         if max_target_length is None:
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-    __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_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 = 359; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":361
  *             self.max_target_chunks = max_target_chunks
  * 
  *         if max_target_length is None:             # <<<<<<<<<<<<<<
@@ -39446,7 +39600,7 @@ 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":350
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":362
  * 
  *         if max_target_length is None:
  *             self.max_target_length = max_initial_size             # <<<<<<<<<<<<<<
@@ -39458,26 +39612,26 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":364
  *             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 = 352; __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 = 364; __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":355
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":367
  * 
  *         # 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 = 355; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 367; __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);
@@ -39485,14 +39639,14 @@ 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":356
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":368
  *         # 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 = 356; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 368; __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);
@@ -39500,7 +39654,7 @@ 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":357
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":369
  *         self.precomputed_collocations = {}
  *         self.precomputed_index = {}
  *         self.use_index = use_index             # <<<<<<<<<<<<<<
@@ -39509,7 +39663,7 @@ 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":358
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":370
  *         self.precomputed_index = {}
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations             # <<<<<<<<<<<<<<
@@ -39518,14 +39672,14 @@ 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":359
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":371
  *         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 = 359; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __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_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->max_rank);
@@ -39533,7 +39687,7 @@ 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":360
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":372
  *         self.use_collocations = use_collocations
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file             # <<<<<<<<<<<<<<
@@ -39546,7 +39700,7 @@ 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":361
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":373
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank             # <<<<<<<<<<<<<<
@@ -39555,7 +39709,7 @@ 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":362
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank             # <<<<<<<<<<<<<<
@@ -39564,7 +39718,7 @@ 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":363
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":375
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates             # <<<<<<<<<<<<<<
@@ -39573,7 +39727,7 @@ 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":364
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":376
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor             # <<<<<<<<<<<<<<
@@ -39582,7 +39736,7 @@ 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":365
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":377
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor
  *         self.tight_phrases = tight_phrases             # <<<<<<<<<<<<<<
@@ -39591,7 +39745,7 @@ 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":367
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":379
  *         self.tight_phrases = tight_phrases
  * 
  *         if require_aligned_chunks:             # <<<<<<<<<<<<<<
@@ -39600,7 +39754,7 @@ 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":369
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":381
  *         if require_aligned_chunks:
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39612,7 +39766,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
     goto __pyx_L7;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":370
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":382
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -39621,7 +39775,7 @@ 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":371
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":383
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False             # <<<<<<<<<<<<<<
@@ -39630,7 +39784,7 @@ 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":372
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":384
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False
  *             self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39642,7 +39796,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":386
  *             self.require_aligned_terminal = True
  *         else:
  *             self.require_aligned_chunks = self.require_aligned_terminal = False             # <<<<<<<<<<<<<<
@@ -39654,7 +39808,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":377
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":389
  * 
  *         # diagnostics
  *         self.prev_norm_prefix = ()             # <<<<<<<<<<<<<<
@@ -39667,17 +39821,17 @@ 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":379
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":391
  *         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 = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __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 = 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;}
+  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __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 = 391; __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);
@@ -39686,17 +39840,17 @@ 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":380
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":392
  * 
  *         self.findexes = IntList(initial_len=10)
  *         self.findexes1 = IntList(initial_len=10)             # <<<<<<<<<<<<<<
  * 
  *         # Online stats
  */
-  __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_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __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 = 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;}
+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 392; __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 = 392; __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);
@@ -39705,179 +39859,212 @@ 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
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":397
+ * 
+ *         # True after data is added
+ *         self.online = False             # <<<<<<<<<<<<<<
+ * 
+ *         # Keep track of everything that can be sampled:
+ */
+  __pyx_v_self->online = 0;
+
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":400
+ * 
+ *         # Keep track of everything that can be sampled:
+ *         self.samples_f = defaultdict(int)             # <<<<<<<<<<<<<<
  * 
  *         # 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_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 400; __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_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 400; __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_t_5 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 400; __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_GOTREF(__pyx_v_self->samples_f);
+  __Pyx_DECREF(__pyx_v_self->samples_f);
+  __pyx_v_self->samples_f = __pyx_t_5;
   __pyx_t_5 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":386
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":403
+ * 
  *         # Phrase counts
- *         self.phrases_f = defaultdict(int)
- *         self.phrases_e = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.phrases_f = defaultdict(int)             # <<<<<<<<<<<<<<
+ *         self.phrases_e = defaultdict(int)
  *         self.phrases_fe = defaultdict(lambda: defaultdict(int))
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+          __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 413; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("configure", 1, 4, 4, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 413; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fsarray), __pyx_ptype_3_sa_SuffixArray, 1, "fsarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 413; __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 = 413; __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 = 414; __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 = 414; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":395
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":413
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":400
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":418
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@@ -40006,7 +40193,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
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   __pyx_v_self->fsa = __pyx_v_fsarray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":401
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":419
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  *         self.fda = fsarray.darray             # <<<<<<<<<<<<<<
@@ -40019,7 +40206,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
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   __pyx_v_self->fda = __pyx_v_fsarray->darray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":402
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":420
  *         self.fsa = fsarray
  *         self.fda = fsarray.darray
  *         self.eda = edarray             # <<<<<<<<<<<<<<
@@ -40032,7 +40219,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
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   __pyx_v_self->eda = __pyx_v_edarray;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":403
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":421
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  *         self.eda = edarray
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@@ -40041,17 +40228,17 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_2configure(struct __pyx
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+  __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 = 421; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":404
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":422
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":405
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":423
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  *         self.eid2symid = self.set_idmap(self.eda)
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+  __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 = 423; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __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 = 423; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":406
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":424
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":407
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":425
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":409
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":427
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":413
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":431
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+  __pyx_t_2 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 431; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_v_N = __pyx_t_2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":414
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":432
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+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_3 = PyInt_FromLong(__pyx_v_N); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  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;}
+  if (PyDict_SetItem(__pyx_t_1, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __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 = 432; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":415
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":433
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":416
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":417
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":435
  *         for word_id from 0 <= word_id < N:
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@@ -40213,7 +40400,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
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   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":418
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":436
  *             new_word_id = sym_fromstring(darray.id2word[word_id], True)
  *             idmap.arr[word_id] = new_word_id
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@@ -40250,7 +40437,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_5pattern2phrase(PyObjec
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":421
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
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  * 
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":423
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
  *     def pattern2phrase(self, pattern):
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  *         result = ()             # <<<<<<<<<<<<<<
@@ -40288,7 +40475,7 @@ 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":424
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
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  *         result = ()
  *         arity = 0             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":425
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
  *         result = ()
  *         arity = 0
  *         for word_id in pattern:             # <<<<<<<<<<<<<<
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+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 443; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 443; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 443; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 425; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":426
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":444
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-    __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_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 = 444; __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 = 444; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":427
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":445
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+      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 445; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":428
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-      __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_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":430
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":448
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":431
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+    __pyx_t_4 = PyInt_FromLong(__pyx_v_new_id); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 449; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":432
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
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+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __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 = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":434
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":437
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":455
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+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_v_patterns = __pyx_t_1;
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":438
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
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  *         patterns = []
  *         result = ()             # <<<<<<<<<<<<<<
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   __pyx_v_result = __pyx_empty_tuple;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
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  *         result = ()
  *         arity = 0             # <<<<<<<<<<<<<<
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   __pyx_v_arity = __pyx_int_0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":440
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":458
  *         result = ()
  *         arity = 0
  *         for word_id in pattern:             # <<<<<<<<<<<<<<
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+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_pattern); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 458; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":459
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":445
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":446
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":447
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":465
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":448
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
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 }
 
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":455
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
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+    __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;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":458
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":476
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+    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 = 476; __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 = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":460
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":478
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     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":461
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":479
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+      __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__warn); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->max_nonterminals); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_3 = PyInt_FromLong(__pyx_v_self->max_nonterminals); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyTuple_New(3); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":462
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":480
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":463
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":481
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+      __pyx_t_4 = PyInt_FromLong(__pyx_v_self->max_length); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -40946,7 +41133,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __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 = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":464
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":465
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+      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_GIVEREF(__pyx_t_4);
@@ -40984,25 +41171,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __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 = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
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+      __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 = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_DECREF(((PyObject *)__pyx_t_5)); __pyx_t_5 = 0;
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-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       goto __pyx_L6;
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":466
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
  *             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))
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@@ -41012,18 +41199,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":467
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
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+      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->train_min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_5 = PyInt_FromLong(__pyx_v_self->train_min_gap_size); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_2);
       __Pyx_GIVEREF(__pyx_t_2);
@@ -41031,25 +41218,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __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 = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_GIVEREF(((PyObject *)__pyx_t_5));
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-      __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_t_5 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       goto __pyx_L7;
     }
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":468
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":486
  *             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:             # <<<<<<<<<<<<<<
@@ -41058,25 +41245,25 @@ 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":469
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":487
  *                 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:
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+      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_5 = PyInt_FromSsize_t(__pyx_t_6); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41084,13 +41271,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __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 = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":470
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":488
  *             if self.use_index:
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
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@@ -41100,9 +41287,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_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 = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41110,7 +41297,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41120,21 +41307,21 @@ 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":471
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":489
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
  *                 for pattern, arr in pre.precomputed_index.iteritems():
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+        __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 = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
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@@ -41142,7 +41329,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_phrases = __pyx_t_3;
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":472
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
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@@ -41153,7 +41340,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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         } 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 = 472; __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 = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41161,23 +41348,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+            __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 = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __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 = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __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 = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __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;}
+            __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 = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __pyx_v_phrase = __pyx_t_2;
           __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":473
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":491
  *                     phrases = self.pattern2phrase_plus(pattern)
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  *                         self.precomputed_index[phrase] = arr             # <<<<<<<<<<<<<<
  *             if self.use_collocations:
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-          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;}
+          if (PyObject_SetItem(__pyx_v_self->precomputed_index, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 491; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41203,7 +41390,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     }
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":474
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":492
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr
  *             if self.use_collocations:             # <<<<<<<<<<<<<<
@@ -41212,25 +41399,25 @@ 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":475
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":493
  *                         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)
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+      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __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_t_3 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __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 = 475; __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 = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":476
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":494
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  *                 for pattern, arr in pre.precomputed_collocations.iteritems():             # <<<<<<<<<<<<<<
@@ -41254,9 +41441,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __pyx_t_3 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":477
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":495
  *                 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)             # <<<<<<<<<<<<<<
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  *             stop_time = monitor_cpu()
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+        __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 = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_pattern);
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-        __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_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41296,47 +41483,47 @@ 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":478
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":496
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  *                     phrase = self.pattern2phrase(pattern)
  *                     self.precomputed_collocations[phrase] = arr             # <<<<<<<<<<<<<<
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-        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;}
+        if (PyObject_SetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 496; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":479
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":497
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  *                     self.precomputed_collocations[phrase] = arr
  *             stop_time = monitor_cpu()             # <<<<<<<<<<<<<<
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-    __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_t_5 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 497; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __pyx_v_stop_time = __pyx_t_5;
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":480
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":498
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  *             logger.info("Processing precomputations took %f seconds", stop_time - start_time)             # <<<<<<<<<<<<<<
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+    __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __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 = 498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41344,7 +41531,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+    __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 = 498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41386,7 +41573,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_11get_precomputed_collo
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":483
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":502
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+  __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 = 502; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":503
  *     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 = 485; __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 = 503; __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":486
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":504
  *         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)             # <<<<<<<<<<<<<<
@@ -41438,26 +41625,26 @@ 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 = 486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 504; __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 = 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;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__arr), __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 504; __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 = 504; __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 = 504; __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 = 504; __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 = 486; __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 = 504; __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 = 486; __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 = 504; __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 = 486; __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 = 504; __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 = 486; __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 = 504; __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 = 486; __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 = 504; __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 = 486; __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 = 504; __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;
@@ -41467,7 +41654,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":487
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":505
  *             arr = self.precomputed_collocations[phrase]
  *             return PhraseLocation(arr=arr, arr_low=0, arr_high=len(arr), num_subpatterns=phrase.arity()+1)
  *         return None             # <<<<<<<<<<<<<<
@@ -41494,7 +41681,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":508
  * 
  * 
  *     cdef int* baeza_yates_helper(self, int low1, int high1, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -41540,7 +41727,7 @@ 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":503
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":521
  *         cdef Matching loc1, loc2
  * 
  *         result = <int*> malloc(0*sizeof(int*))             # <<<<<<<<<<<<<<
@@ -41549,7 +41736,7 @@ 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":505
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":523
  *         result = <int*> malloc(0*sizeof(int*))
  * 
  *         d_first = 0             # <<<<<<<<<<<<<<
@@ -41558,7 +41745,7 @@ 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":506
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":524
  * 
  *         d_first = 0
  *         if high1 - low1 > high2 - low2:             # <<<<<<<<<<<<<<
@@ -41568,7 +41755,7 @@ 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":507
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":525
  *         d_first = 0
  *         if high1 - low1 > high2 - low2:
  *             d_first = 1             # <<<<<<<<<<<<<<
@@ -41580,7 +41767,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":511
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":529
  *         # 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:             # <<<<<<<<<<<<<<
@@ -41596,7 +41783,7 @@ 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":512
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":530
  *         # Case 1: one of the sets is empty
  *         if low1 >= high1 or low2 >= high2:
  *             return result             # <<<<<<<<<<<<<<
@@ -41609,7 +41796,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":515
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":533
  * 
  *         # Case 2: sets are non-overlapping
  *         assign_matching(&loc1, arr1, high1-step1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41618,7 +41805,7 @@ 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":516
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
  *         # 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)             # <<<<<<<<<<<<<<
@@ -41627,7 +41814,7 @@ 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":517
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":535
  *         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:             # <<<<<<<<<<<<<<
@@ -41637,7 +41824,7 @@ 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":518
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":536
  *         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             # <<<<<<<<<<<<<<
@@ -41650,7 +41837,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":520
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":538
  *             return result
  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41659,7 +41846,7 @@ 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":521
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":539
  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41668,7 +41855,7 @@ 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":522
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
  *         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:             # <<<<<<<<<<<<<<
@@ -41678,7 +41865,7 @@ 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":523
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":541
  *         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             # <<<<<<<<<<<<<<
@@ -41691,7 +41878,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":527
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":545
  *         # Case 3: query set and data set do not meet size mismatch constraints;
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1             # <<<<<<<<<<<<<<
@@ -41701,15 +41888,15 @@ 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 = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 545; __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 = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 545; __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":528
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":546
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2             # <<<<<<<<<<<<<<
@@ -41719,15 +41906,15 @@ 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 = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 546; __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 = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 546; __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":529
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41736,7 +41923,7 @@ 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":530
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":548
  *         dsetsize = (high2-low2) / step2
  *         if d_first:
  *             tmp = qsetsize             # <<<<<<<<<<<<<<
@@ -41745,7 +41932,7 @@ 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":531
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":549
  *         if d_first:
  *             tmp = qsetsize
  *             qsetsize = dsetsize             # <<<<<<<<<<<<<<
@@ -41754,7 +41941,7 @@ 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":532
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":550
  *             tmp = qsetsize
  *             qsetsize = dsetsize
  *             dsetsize = tmp             # <<<<<<<<<<<<<<
@@ -41766,7 +41953,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
  *             dsetsize = tmp
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:             # <<<<<<<<<<<<<<
@@ -41777,12 +41964,12 @@ 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 = 534; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 552; __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":535
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:
  *             free(result)             # <<<<<<<<<<<<<<
@@ -41791,7 +41978,7 @@ 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":536
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":554
  *         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)             # <<<<<<<<<<<<<<
@@ -41804,7 +41991,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L8:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":558
  *         # binary search.    There are two flavors, depending on
  *         # whether the queryset or dataset is first
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41813,7 +42000,7 @@ 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":541
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":559
  *         # whether the queryset or dataset is first
  *         if d_first:
  *             med2 = median(low2, high2, step2)             # <<<<<<<<<<<<<<
@@ -41822,7 +42009,7 @@ 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":542
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":560
  *         if d_first:
  *             med2 = median(low2, high2, step2)
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41831,7 +42018,7 @@ 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":562
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  * 
  *             search_low = low1             # <<<<<<<<<<<<<<
@@ -41840,7 +42027,7 @@ 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":545
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":563
  * 
  *             search_low = low1
  *             search_high = high1             # <<<<<<<<<<<<<<
@@ -41849,7 +42036,7 @@ 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":546
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":564
  *             search_low = low1
  *             search_high = high1
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41860,7 +42047,7 @@ 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":547
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":565
  *             search_high = high1
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)             # <<<<<<<<<<<<<<
@@ -41869,7 +42056,7 @@ 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":548
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":566
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41878,7 +42065,7 @@ 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":549
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
  *                 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)             # <<<<<<<<<<<<<<
@@ -41887,7 +42074,7 @@ 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":552
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":570
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41896,7 +42083,7 @@ 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":550
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
  *                 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:             # <<<<<<<<<<<<<<
@@ -41905,7 +42092,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":551
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":569
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_low = med1_plus             # <<<<<<<<<<<<<<
@@ -41915,7 +42102,7 @@ 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":552
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":570
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41924,7 +42111,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
  *                     search_low = med1_plus
  *                 elif comparison == 1:
  *                     search_high = med1_minus             # <<<<<<<<<<<<<<
@@ -41935,7 +42122,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":555
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
  *                     search_high = med1_minus
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -41951,7 +42138,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":557
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":575
  *                     break
  *         else:
  *             med1 = median(low1, high1, step1)             # <<<<<<<<<<<<<<
@@ -41960,7 +42147,7 @@ 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":558
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":576
  *         else:
  *             med1 = median(low1, high1, step1)
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41969,7 +42156,7 @@ 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":560
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":578
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  * 
  *             search_low = low2             # <<<<<<<<<<<<<<
@@ -41978,7 +42165,7 @@ 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":561
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":579
  * 
  *             search_low = low2
  *             search_high = high2             # <<<<<<<<<<<<<<
@@ -41987,7 +42174,7 @@ 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":562
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":580
  *             search_low = low2
  *             search_high = high2
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41998,7 +42185,7 @@ 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":563
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":581
  *             search_high = high2
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)             # <<<<<<<<<<<<<<
@@ -42007,7 +42194,7 @@ 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":564
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":582
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42016,7 +42203,7 @@ 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":565
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":583
  *                 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)             # <<<<<<<<<<<<<<
@@ -42025,7 +42212,7 @@ 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":568
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -42034,7 +42221,7 @@ 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":566
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":584
  *                 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:             # <<<<<<<<<<<<<<
@@ -42043,7 +42230,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":585
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_high = med2             # <<<<<<<<<<<<<<
@@ -42053,7 +42240,7 @@ 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":568
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -42062,7 +42249,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":569
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":587
  *                     search_high = med2
  *                 elif comparison == 1:
  *                     search_low = med2 + step2             # <<<<<<<<<<<<<<
@@ -42073,7 +42260,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":589
  *                     search_low = med2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -42088,7 +42275,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L9:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
  *                     break
  * 
  *         med_result_len = 0             # <<<<<<<<<<<<<<
@@ -42097,7 +42284,7 @@ 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":574
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
  * 
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))             # <<<<<<<<<<<<<<
@@ -42106,7 +42293,7 @@ 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":575
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":593
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))
  *         if search_high > search_low:             # <<<<<<<<<<<<<<
@@ -42116,7 +42303,7 @@ 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":581
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
  *             # want to store the bindings for all of those elements.    We can
  *             # subsequently throw all of them away.
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -42125,7 +42312,7 @@ 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":582
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":600
  *             # subsequently throw all of them away.
  *             med2_minus = med2
  *             med2_plus = med2 + step2             # <<<<<<<<<<<<<<
@@ -42134,7 +42321,7 @@ 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":583
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
  *             med2_minus = med2
  *             med2_plus = med2 + step2
  *             i1 = med1_minus             # <<<<<<<<<<<<<<
@@ -42143,7 +42330,7 @@ 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":584
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
  *             med2_plus = med2 + step2
  *             i1 = med1_minus
  *             while i1 < med1_plus:             # <<<<<<<<<<<<<<
@@ -42154,7 +42341,7 @@ 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":585
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":603
  *             i1 = med1_minus
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42163,7 +42350,7 @@ 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":586
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 while med2_minus-step2 >= low2:             # <<<<<<<<<<<<<<
@@ -42174,7 +42361,7 @@ 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":587
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":605
  *                 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)             # <<<<<<<<<<<<<<
@@ -42183,7 +42370,7 @@ 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":588
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":606
  *                 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:             # <<<<<<<<<<<<<<
@@ -42193,7 +42380,7 @@ 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":589
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":607
  *                     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             # <<<<<<<<<<<<<<
@@ -42205,7 +42392,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":609
  *                         med2_minus = med2_minus - step2
  *                     else:
  *                         break             # <<<<<<<<<<<<<<
@@ -42218,7 +42405,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L18_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":610
  *                     else:
  *                         break
  *                 i2 = med2_minus             # <<<<<<<<<<<<<<
@@ -42227,7 +42414,7 @@ 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":593
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
  *                         break
  *                 i2 = med2_minus
  *                 while i2 < high2:             # <<<<<<<<<<<<<<
@@ -42238,7 +42425,7 @@ 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":594
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":612
  *                 i2 = med2_minus
  *                 while i2 < high2:
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42247,7 +42434,7 @@ 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":595
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":613
  *                 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)             # <<<<<<<<<<<<<<
@@ -42256,7 +42443,7 @@ 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":596
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":614
  *                     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:             # <<<<<<<<<<<<<<
@@ -42266,7 +42453,7 @@ 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":598
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":616
  *                     if comparison == 0:
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)             # <<<<<<<<<<<<<<
@@ -42278,7 +42465,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":617
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42288,7 +42475,7 @@ 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":600
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":618
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -42300,7 +42487,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L23:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":619
  *                     if comparison == -1:
  *                         break
  *                     i2 = i2 + step2             # <<<<<<<<<<<<<<
@@ -42311,7 +42498,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L21_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":620
  *                         break
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:             # <<<<<<<<<<<<<<
@@ -42321,7 +42508,7 @@ 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":603
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":621
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:
  *                     med2_plus = i2             # <<<<<<<<<<<<<<
@@ -42333,7 +42520,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L24:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":622
  *                 if i2 > med2_plus:
  *                     med2_plus = i2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42343,7 +42530,7 @@ 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":606
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":624
  *                 i1 = i1 + step1
  * 
  *             tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -42352,7 +42539,7 @@ 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":607
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":625
  * 
  *             tmp = med1_minus
  *             med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42361,7 +42548,7 @@ 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":608
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":626
  *             tmp = med1_minus
  *             med1_minus = med1_plus
  *             med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -42373,7 +42560,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":629
  *         else:
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -42382,7 +42569,7 @@ 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":612
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":630
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2
  *             med2_plus = med2             # <<<<<<<<<<<<<<
@@ -42391,7 +42578,7 @@ 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":613
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":631
  *             med2_minus = med2
  *             med2_plus = med2
  *             if d_first:             # <<<<<<<<<<<<<<
@@ -42400,7 +42587,7 @@ 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":614
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":632
  *             med2_plus = med2
  *             if d_first:
  *                 med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -42409,7 +42596,7 @@ 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":615
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":633
  *             if d_first:
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42419,7 +42606,7 @@ 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":616
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":634
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:
  *                     med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42431,7 +42618,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L26:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":617
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":635
  *                 if comparison == -1:
  *                     med1_minus = med1_plus
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -42441,7 +42628,7 @@ 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":618
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":636
  *                     med1_minus = med1_plus
  *                 if comparison == 1:
  *                     med1_plus = med1_minus             # <<<<<<<<<<<<<<
@@ -42456,7 +42643,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":620
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":638
  *                     med1_plus = med1_minus
  *             else:
  *                 tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -42465,7 +42652,7 @@ 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":621
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":639
  *             else:
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42474,7 +42661,7 @@ 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":622
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":640
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -42483,7 +42670,7 @@ 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":623
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":641
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -42493,7 +42680,7 @@ 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":624
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":642
  *                 med1_plus = tmp
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -42502,7 +42689,7 @@ 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":625
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2
  *                     med2_plus = med2_plus + step2             # <<<<<<<<<<<<<<
@@ -42518,7 +42705,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L14:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":627
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":645
  *                     med2_plus = med2_plus + step2
  * 
  *         low_result_len = 0             # <<<<<<<<<<<<<<
@@ -42527,7 +42714,7 @@ 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":628
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":646
  * 
  *         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)             # <<<<<<<<<<<<<<
@@ -42536,7 +42723,7 @@ 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":629
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":647
  *         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             # <<<<<<<<<<<<<<
@@ -42545,7 +42732,7 @@ 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":630
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":648
  *         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)             # <<<<<<<<<<<<<<
@@ -42554,7 +42741,7 @@ 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":632
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":650
  *         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)             # <<<<<<<<<<<<<<
@@ -42563,7 +42750,7 @@ 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":633
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":651
  * 
  *         result = extend_arr(result, result_len, low_result, low_result_len)
  *         result = extend_arr(result, result_len, med_result, med_result_len)             # <<<<<<<<<<<<<<
@@ -42572,7 +42759,7 @@ 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":634
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":652
  *         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)             # <<<<<<<<<<<<<<
@@ -42581,7 +42768,7 @@ 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":635
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":653
  *         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)             # <<<<<<<<<<<<<<
@@ -42590,7 +42777,7 @@ 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":636
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":654
  *         result = extend_arr(result, result_len, high_result, high_result_len)
  *         free(low_result)
  *         free(med_result)             # <<<<<<<<<<<<<<
@@ -42599,7 +42786,7 @@ 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":637
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":655
  *         free(low_result)
  *         free(med_result)
  *         free(high_result)             # <<<<<<<<<<<<<<
@@ -42608,7 +42795,7 @@ 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":639
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":657
  *         free(high_result)
  * 
  *         return result             # <<<<<<<<<<<<<<
@@ -42628,7 +42815,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":661
  * 
  * 
  *     cdef long compare_matchings_set(self, int i1_minus, int i1_plus, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -42647,7 +42834,7 @@ 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":654
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":672
  *         cdef Matching* loc1
  * 
  *         loc1 = &l1_stack             # <<<<<<<<<<<<<<
@@ -42656,7 +42843,7 @@ 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":656
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":674
  *         loc1 = &l1_stack
  * 
  *         i1 = i1_minus             # <<<<<<<<<<<<<<
@@ -42665,7 +42852,7 @@ 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":657
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":675
  * 
  *         i1 = i1_minus
  *         while i1 < i1_plus:             # <<<<<<<<<<<<<<
@@ -42676,7 +42863,7 @@ 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":658
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":676
  *         i1 = i1_minus
  *         while i1 < i1_plus:
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42685,7 +42872,7 @@ 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":659
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":677
  *         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)             # <<<<<<<<<<<<<<
@@ -42694,7 +42881,7 @@ 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":660
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
  *             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:             # <<<<<<<<<<<<<<
@@ -42704,7 +42891,7 @@ 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":661
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":679
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)
  *             if comparison == 0:
  *                 prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42713,7 +42900,7 @@ 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":662
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":680
  *             if comparison == 0:
  *                 prev_comparison = 0
  *                 break             # <<<<<<<<<<<<<<
@@ -42724,7 +42911,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
       goto __pyx_L5;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":663
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
  *                 prev_comparison = 0
  *                 break
  *             elif i1 == i1_minus:             # <<<<<<<<<<<<<<
@@ -42734,7 +42921,7 @@ 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":664
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":682
  *                 break
  *             elif i1 == i1_minus:
  *                 prev_comparison = comparison             # <<<<<<<<<<<<<<
@@ -42746,7 +42933,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":666
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":684
  *                 prev_comparison = comparison
  *             else:
  *                 if comparison != prev_comparison:             # <<<<<<<<<<<<<<
@@ -42756,7 +42943,7 @@ 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":667
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
  *             else:
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42765,7 +42952,7 @@ 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":668
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":686
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -42779,7 +42966,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":669
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":687
  *                     prev_comparison = 0
  *                     break
  *             i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42790,7 +42977,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   }
   __pyx_L4_break:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":670
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":688
  *                     break
  *             i1 = i1 + step1
  *         return prev_comparison             # <<<<<<<<<<<<<<
@@ -42806,7 +42993,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":673
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":691
  * 
  * 
  *     cdef long compare_matchings(self, Matching* loc1, Matching* loc2, int offset_by_one, int len_last):             # <<<<<<<<<<<<<<
@@ -42824,7 +43011,7 @@ 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":676
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":694
  *         cdef int i
  * 
  *         if loc1.sent_id > loc2.sent_id:             # <<<<<<<<<<<<<<
@@ -42834,7 +43021,7 @@ 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":677
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":695
  * 
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1             # <<<<<<<<<<<<<<
@@ -42847,7 +43034,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":696
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:             # <<<<<<<<<<<<<<
@@ -42857,7 +43044,7 @@ 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":679
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":697
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:
  *             return -1             # <<<<<<<<<<<<<<
@@ -42870,7 +43057,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":699
  *             return -1
  * 
  *         if loc1.size == 1 and loc2.size == 1:             # <<<<<<<<<<<<<<
@@ -42886,7 +43073,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":682
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":700
  * 
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:             # <<<<<<<<<<<<<<
@@ -42896,7 +43083,7 @@ 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":683
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -42911,7 +43098,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     goto __pyx_L5;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":703
  *                 return 1
  * 
  *         elif offset_by_one:             # <<<<<<<<<<<<<<
@@ -42920,7 +43107,7 @@ 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":686
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
  * 
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -42930,7 +43117,7 @@ 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":687
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":705
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:             # <<<<<<<<<<<<<<
@@ -42940,7 +43127,7 @@ 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":688
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -42953,7 +43140,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L9:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":689
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":707
  *                 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]:             # <<<<<<<<<<<<<<
@@ -42963,7 +43150,7 @@ 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":690
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":708
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i-1]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -42980,7 +43167,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":693
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":711
  * 
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -42990,7 +43177,7 @@ 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":694
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":712
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -43003,7 +43190,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L11:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":695
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":713
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -43013,7 +43200,7 @@ 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":696
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":714
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:
  *                 return -1             # <<<<<<<<<<<<<<
@@ -43026,7 +43213,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":698
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":716
  *                 return -1
  * 
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -43036,7 +43223,7 @@ 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":699
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":717
  * 
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -43046,7 +43233,7 @@ 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":700
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":718
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -43059,7 +43246,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L15:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":719
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -43069,7 +43256,7 @@ 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":702
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":720
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -43085,7 +43272,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":722
  *                     return -1
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -43095,7 +43282,7 @@ 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":705
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":723
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1             # <<<<<<<<<<<<<<
@@ -43108,7 +43295,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L17:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":724
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1
  *         return 0             # <<<<<<<<<<<<<<
@@ -43124,7 +43311,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":709
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":727
  * 
  * 
  *     cdef int* merge_helper(self, int low1, int high1, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -43148,7 +43335,7 @@ 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":717
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":735
  *         cdef Matching loc1, loc2
  * 
  *         result_len[0] = 0             # <<<<<<<<<<<<<<
@@ -43157,7 +43344,7 @@ 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":718
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":736
  * 
  *         result_len[0] = 0
  *         result = <int*> malloc(0*sizeof(int))             # <<<<<<<<<<<<<<
@@ -43166,7 +43353,7 @@ 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":720
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":738
  *         result = <int*> malloc(0*sizeof(int))
  * 
  *         i1 = low1             # <<<<<<<<<<<<<<
@@ -43175,7 +43362,7 @@ 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":721
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":739
  * 
  *         i1 = low1
  *         i2 = low2             # <<<<<<<<<<<<<<
@@ -43184,7 +43371,7 @@ 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":722
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":740
  *         i1 = low1
  *         i2 = low2
  *         while i1 < high1 and i2 < high2:             # <<<<<<<<<<<<<<
@@ -43201,7 +43388,7 @@ 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":725
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
  * 
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43210,7 +43397,7 @@ 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":726
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":744
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             while i2 < high2:             # <<<<<<<<<<<<<<
@@ -43221,7 +43408,7 @@ 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":727
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
  *             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)             # <<<<<<<<<<<<<<
@@ -43230,7 +43417,7 @@ 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":728
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":746
  *             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:             # <<<<<<<<<<<<<<
@@ -43240,7 +43427,7 @@ 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":729
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":747
  *                 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             # <<<<<<<<<<<<<<
@@ -43252,7 +43439,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":731
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
  *                     i2 = i2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -43265,7 +43452,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
     __pyx_L6_break:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":734
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":752
  * 
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1             # <<<<<<<<<<<<<<
@@ -43274,7 +43461,7 @@ 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":735
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":753
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:             # <<<<<<<<<<<<<<
@@ -43291,7 +43478,7 @@ 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":736
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":754
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43300,7 +43487,7 @@ 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":737
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":755
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2             # <<<<<<<<<<<<<<
@@ -43309,7 +43496,7 @@ 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":738
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":756
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2
  *                 while j2 < high2:             # <<<<<<<<<<<<<<
@@ -43320,7 +43507,7 @@ 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":739
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":757
  *                 j2 = i2
  *                 while j2 < high2:
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43329,7 +43516,7 @@ 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":740
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":758
  *                 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)             # <<<<<<<<<<<<<<
@@ -43338,7 +43525,7 @@ 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":741
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
  *                     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:             # <<<<<<<<<<<<<<
@@ -43348,7 +43535,7 @@ 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":742
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":760
  *                     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)             # <<<<<<<<<<<<<<
@@ -43360,7 +43547,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L12:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
  *                     if comparison == 0:
  *                         result = append_combined_matching(result, &loc1, &loc2, offset_by_one, num_subpatterns, result_len)
  *                     if comparison == 1:             # <<<<<<<<<<<<<<
@@ -43373,7 +43560,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L13:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":763
  *                     if comparison == 1:
  *                         pass
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -43383,7 +43570,7 @@ 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":746
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
  *                         pass
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -43395,7 +43582,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":748
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
  *                         break
  *                     else:
  *                         j2 = j2 + step2             # <<<<<<<<<<<<<<
@@ -43408,7 +43595,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       __pyx_L11_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":767
  *                     else:
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -43419,7 +43606,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":750
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1
  *         return result             # <<<<<<<<<<<<<<
@@ -43435,7 +43622,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":753
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":771
  * 
  * 
  *     cdef void sort_phrase_loc(self, IntList arr, PhraseLocation loc, Phrase phrase):             # <<<<<<<<<<<<<<
@@ -43457,26 +43644,26 @@ 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":758
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":776
  *         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 = 758; __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 = 776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":777
  * 
  *         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 = 759; __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 = 777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    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;}
+    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 = 777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GIVEREF(__pyx_t_2);
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     __Pyx_DECREF(((PyObject *)__pyx_v_loc->arr));
@@ -43486,20 +43673,20 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":779
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  *             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 = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __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 = 761; __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 = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    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;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __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 = 761; __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 = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __Pyx_GIVEREF(__pyx_t_3);
@@ -43508,27 +43695,27 @@ 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":762
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
  *         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])
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-    __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_t_3 = PyInt_FromLong(__pyx_v_arr->len); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __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_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __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_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 = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __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":763
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":781
  *             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:             # <<<<<<<<<<<<<<
@@ -43538,7 +43725,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])             # <<<<<<<<<<<<<<
@@ -43548,7 +43735,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":765
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":783
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val             # <<<<<<<<<<<<<<
@@ -43557,7 +43744,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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     __pyx_v_i = __pyx_v_veb->veb->min_val;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":784
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:             # <<<<<<<<<<<<<<
@@ -43567,7 +43754,7 @@ 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":767
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":785
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i             # <<<<<<<<<<<<<<
@@ -43576,7 +43763,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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       (__pyx_v_loc->arr->arr[__pyx_v_j]) = __pyx_v_i;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":786
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)             # <<<<<<<<<<<<<<
@@ -43588,7 +43775,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":769
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0             # <<<<<<<<<<<<<<
@@ -43597,7 +43784,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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   __pyx_v_loc->arr_low = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":770
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":788
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0
  *         loc.arr_high = loc.arr.len             # <<<<<<<<<<<<<<
@@ -43616,7 +43803,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":773
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
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  * 
  *     cdef intersect_helper(self, Phrase prefix, Phrase suffix,             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":800
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-  __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_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_suffix), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 800; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_2 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 800; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":783
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":801
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@@ -43688,7 +43875,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":785
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":803
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  *         else:
  *             offset_by_one = 0             # <<<<<<<<<<<<<<
@@ -43699,34 +43886,34 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":805
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  *         len_last = len(suffix.getchunk(suffix.arity()))             # <<<<<<<<<<<<<<
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  *         if prefix_loc.arr is None:
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-  __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_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__getchunk); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __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":789
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":807
  *         len_last = len(suffix.getchunk(suffix.arity()))
  * 
  *         if prefix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43736,7 +43923,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":790
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":808
  * 
  *         if prefix_loc.arr is None:
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@@ -43751,7 +43938,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":809
  *         if prefix_loc.arr is None:
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  *         arr1 = prefix_loc.arr             # <<<<<<<<<<<<<<
@@ -43761,7 +43948,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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   __pyx_v_arr1 = __pyx_v_prefix_loc->arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":792
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":810
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43770,7 +43957,7 @@ 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":793
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":811
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43779,7 +43966,7 @@ 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":794
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high
  *         step1 = prefix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43788,7 +43975,7 @@ 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":796
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
  *         step1 = prefix_loc.num_subpatterns
  * 
  *         if suffix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43798,7 +43985,7 @@ 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":797
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":815
  * 
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)             # <<<<<<<<<<<<<<
@@ -43813,7 +44000,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":816
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr             # <<<<<<<<<<<<<<
@@ -43823,7 +44010,7 @@ 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":799
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":817
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43832,7 +44019,7 @@ 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":800
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":818
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low
  *         high2 = suffix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43841,7 +44028,7 @@ 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":801
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":819
  *         low2 = suffix_loc.arr_low
  *         high2 = suffix_loc.arr_high
  *         step2 = suffix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43850,26 +44037,26 @@ 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":803
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":821
  *         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 = 803; __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 = 821; __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 = 803; __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 = 821; __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 = 803; __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 = 821; __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 = 803; __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 = 821; __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":805
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":823
  *         num_subpatterns = prefix.arity()+1
  * 
  *         if algorithm == MERGE:             # <<<<<<<<<<<<<<
@@ -43879,7 +44066,7 @@ 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":808
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":826
  *             result_ptr = self.merge_helper(low1, high1, arr1.arr, step1,
  *                                     low2, high2, arr2.arr, step2,
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)             # <<<<<<<<<<<<<<
@@ -43891,7 +44078,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":830
  *             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)             # <<<<<<<<<<<<<<
@@ -43902,7 +44089,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":832
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)
  * 
  *         if result_len == 0:             # <<<<<<<<<<<<<<
@@ -43912,7 +44099,7 @@ 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":815
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
  * 
  *         if result_len == 0:
  *             free(result_ptr)             # <<<<<<<<<<<<<<
@@ -43921,7 +44108,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result_ptr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":816
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":834
  *         if result_len == 0:
  *             free(result_ptr)
  *             return None             # <<<<<<<<<<<<<<
@@ -43936,19 +44123,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":818
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
  *             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 = 818; __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 = 836; __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":819
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":837
  *         else:
  *             result = IntList()
  *             free(result.arr)             # <<<<<<<<<<<<<<
@@ -43957,7 +44144,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":820
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":838
  *             result = IntList()
  *             free(result.arr)
  *             result.arr = result_ptr             # <<<<<<<<<<<<<<
@@ -43966,7 +44153,7 @@ 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":821
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":839
  *             free(result.arr)
  *             result.arr = result_ptr
  *             result.len = result_len             # <<<<<<<<<<<<<<
@@ -43975,7 +44162,7 @@ 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":822
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":840
  *             result.arr = result_ptr
  *             result.len = result_len
  *             result.size = result_len             # <<<<<<<<<<<<<<
@@ -43984,7 +44171,7 @@ 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":823
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":841
  *             result.len = result_len
  *             result.size = result_len
  *             return PhraseLocation(arr_low=0, arr_high=result_len, arr=result, num_subpatterns=num_subpatterns)             # <<<<<<<<<<<<<<
@@ -43992,19 +44179,19 @@ 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 = 823; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyDict_New(); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __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 = 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;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_low), __pyx_int_0) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __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 = 841; __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 = 823; __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 = 841; __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 = 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;}
+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr), ((PyObject *)__pyx_v_result)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __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 = 841; __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 = 823; __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 = 841; __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 = 823; __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 = 841; __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;
@@ -44030,7 +44217,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":825
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
  *             return PhraseLocation(arr_low=0, arr_high=result_len, arr=result, num_subpatterns=num_subpatterns)
  * 
  *     cdef loc2str(self, PhraseLocation loc):             # <<<<<<<<<<<<<<
@@ -44053,7 +44240,7 @@ 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":827
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
  *     cdef loc2str(self, PhraseLocation loc):
  *         cdef int i, j
  *         result = "{"             # <<<<<<<<<<<<<<
@@ -44063,7 +44250,7 @@ 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":828
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":846
  *         cdef int i, j
  *         result = "{"
  *         i = 0             # <<<<<<<<<<<<<<
@@ -44072,7 +44259,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":829
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":847
  *         result = "{"
  *         i = 0
  *         while i < loc.arr_high:             # <<<<<<<<<<<<<<
@@ -44083,20 +44270,20 @@ 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":830
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":848
  *         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 = 830; __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 = 848; __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":831
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":849
  *         while i < loc.arr_high:
  *             result = result + "("
  *             for j from i <= j < i + loc.num_subpatterns:             # <<<<<<<<<<<<<<
@@ -44106,19 +44293,19 @@ 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":832
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":850
  *             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 = 832; __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 = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -44126,20 +44313,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
       __pyx_t_2 = 0;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
  *             for j from i <= j < i + loc.num_subpatterns:
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  *         result = result + "}"
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-    __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_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_59)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":834
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":852
  *                 result = result + ("%d " %loc.arr[j])
  *             result = result + ")"
  *             i = i + loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -44149,20 +44336,20 @@ 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":835
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":853
  *             result = result + ")"
  *             i = i + loc.num_subpatterns
  *         result = result + "}"             # <<<<<<<<<<<<<<
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-  __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_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_118)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_DECREF(__pyx_v_result);
   __pyx_v_result = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":854
  *             i = i + loc.num_subpatterns
  *         result = result + "}"
  *         return result             # <<<<<<<<<<<<<<
@@ -44188,7 +44375,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":838
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":856
  *         return result
  * 
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   __Pyx_RefNannySetupContext("intersect", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":842
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":860
  *         cdef PhraseLocation prefix_loc, suffix_loc, result
  * 
  *         prefix = prefix_node.phrase             # <<<<<<<<<<<<<<
  *         suffix = suffix_node.phrase
  *         prefix_loc = prefix_node.phrase_location
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-  __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_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  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;}
+  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 = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":861
  * 
  *         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 = 843; __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 = 861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  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;}
+  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 = 861; __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":844
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
  *         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 = 844; __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 = 862; __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 = 844; __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 = 862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
  *         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 = 845; __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 = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  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;}
+  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 = 863; __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":847
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":865
  *         suffix_loc = suffix_node.phrase_location
  * 
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-  __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_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s_119); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   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 = 847; __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 = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __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 = 847; __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 = 865; __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":848
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":866
  * 
  *         result = self.get_precomputed_collocation(phrase)
  *         if result is not None:             # <<<<<<<<<<<<<<
@@ -44298,7 +44485,7 @@ 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":849
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":867
  *         result = self.get_precomputed_collocation(phrase)
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@@ -44311,7 +44498,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   }
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":869
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  * 
  *         if result is None:             # <<<<<<<<<<<<<<
@@ -44321,7 +44508,7 @@ 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":852
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":870
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  *         if result is None:
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@@ -44330,21 +44517,21 @@ 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":853
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
  *         if result is None:
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+      __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 = 871; __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 = 853; __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 = 871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(((PyObject *)__pyx_v_result));
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       __pyx_t_3 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":854
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
  *             if self.use_baeza_yates:
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@@ -44358,21 +44545,21 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":856
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
  *                 intersect_method="double binary"
  *             else:
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, MERGE)             # <<<<<<<<<<<<<<
  *                 intersect_method="merge"
  *         return result
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-      __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_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 = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      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;}
+      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 = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":857
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":875
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  *                 intersect_method="merge"             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":858
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":864
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":865
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":866
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":867
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":868
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+    __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 = 886; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":869
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":870
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+        __pyx_t_5 = PyNumber_Subtract(__pyx_v_toskip, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_6 = PyLong_FromUnsignedLong(__pyx_v_na); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_4 = PyNumber_Add(__pyx_v_pathlen, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __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 = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
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+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -44883,7 +45070,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":880
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":883
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":884
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":886
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":887
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+    if (PyObject_SetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key), __pyx_v_reachable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45265,20 +45452,20 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
     __pyx_v_nextreachable = __pyx_t_4;
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":889
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":907
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-    __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_t_4 = PyObject_GetItem(__pyx_v_next_states, __pyx_v_nextreachable); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __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 = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __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 = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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;}
+        __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 = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __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 = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":890
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":908
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+      __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 = 908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_9 = PyTuple_New(3); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45333,7 +45520,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
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+      __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 = 908; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":891
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
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+      __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 = 909; __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 = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":892
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
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-      __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_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 = 911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":894
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+        __pyx_t_4 = PyInt_FromSsize_t(__pyx_t_11); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_11 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __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 = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":895
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-          __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_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __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_t_10 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt_id); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __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 = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __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_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_13); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":896
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":914
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  *                             newel = (next_id,alt_id,pathlen+jump)             # <<<<<<<<<<<<<<
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-            __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_t_13 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_10 = PyTuple_New(3); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":897
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
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+            __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 = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             if (__pyx_t_5) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":898
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":916
  *                             newel = (next_id,alt_id,pathlen+jump)
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-              __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_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              __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_t_13 = PyTuple_New(3); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              __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_t_14 = PyList_Append(__pyx_v_frontier, ((PyObject *)__pyx_t_13)); if (unlikely(__pyx_t_14 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":899
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
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-          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "reachable") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -45642,7 +45829,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
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+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":902
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+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 920; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":903
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+  __pyx_t_2 = PyObject_Length(__pyx_v_fwords); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __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 = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_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 = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_3); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 921; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":904
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+  __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyObject_Length(__pyx_t_3); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 923; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":906
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+      __pyx_t_8 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __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 = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 925; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45850,36 +46037,36 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":927
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+      __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 = 927; __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 = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
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+        __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 = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":911
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":929
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@@ -45887,29 +46074,29 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":913
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+        __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_7 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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_t_3 = PyNumber_Subtract(__pyx_v_dist, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __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_t_6 = PyTuple_New(3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45920,7 +46107,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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         __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 = 913; __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45928,7 +46115,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-          __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_t_10 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45937,23 +46124,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
           if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_6)) {
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-            __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;}
+            __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __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;}
+            __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_6)) break;
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-            __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;}
+            __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __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;}
+            __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 = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":914
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":932
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-          __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;}
+          __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 = 932; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":933
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  *                         if (ifromchild not in ret):
  *                             ret.append(ifromchild)             # <<<<<<<<<<<<<<
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  *         return ret
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-            __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;}
+            __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifromchild); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45993,7 +46180,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":935
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  * 
  *         return ret             # <<<<<<<<<<<<<<
@@ -46054,16 +46241,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
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         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 = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-        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;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "shortest") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -46078,7 +46265,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
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-  __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_RaiseArgtupleInvalid("shortest", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -46089,7 +46276,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":921
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":939
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":922
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":940
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+  __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 = 940; __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 = 940; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":923
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":941
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":924
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":942
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  *         if (ifrom == ito):             # <<<<<<<<<<<<<<
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-  __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_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 = 942; __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 = 942; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":925
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":943
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@@ -46178,41 +46365,41 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_18shortest(struct __pyx
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":926
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":944
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-  __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_t_1 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __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_t_3 = PyObject_Length(__pyx_t_1); if (unlikely(__pyx_t_3 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 944; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":927
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":945
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+    __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 = 945; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":928
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":938
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":940
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":943
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":987
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":989
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":990
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":992
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@@ -47495,8 +47851,8 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-        PyTuple_SET_ITEM(__pyx_t_14, 4, __pyx_t_2);
-        __Pyx_GIVEREF(__pyx_t_2);
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@@ -47508,10 +47864,10 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":994
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       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase));
@@ -47936,23 +48298,23 @@ 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":1014
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1037
  *                 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 = 1014; __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 = 1037; __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 = 1014; __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 = 1037; __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 = 1014; __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 = 1037; __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":1016
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
  *                 arity = hiero_phrase.arity()
  * 
  *                 lookup_required = False             # <<<<<<<<<<<<<<
@@ -47961,36 +48323,36 @@ 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":1017
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1040
  * 
  *                 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 = 1017; __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 = 1040; __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 = 1017; __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 = 1040; __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":1018
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
  *                 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 = 1018; __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 = 1041; __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 = 1018; __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 = 1041; __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":1020
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1043
  *                     if node.children[word_id] is None:
  *                         # Path dead-ends at this node
  *                         continue             # <<<<<<<<<<<<<<
@@ -48002,16 +48364,16 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1023
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
  *                     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 = 1023; __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 = 1046; __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 = 1023; __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 = 1046; __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);
@@ -48025,20 +48387,20 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1025
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1048
  *                         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 = 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 = 1048; __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":1027
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1050
  *                     if node.suffix_link is None:
  *                         # Current node is root; lookup required
  *                         lookup_required = True             # <<<<<<<<<<<<<<
@@ -48050,54 +48412,54 @@ 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":1052
  *                         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 = 1029; __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 = 1052; __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 = 1029; __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 = 1052; __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 = 1029; __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 = 1052; __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":1030
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1053
  *                     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 = 1030; __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 = 1053; __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 = 1030; __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 = 1053; __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 = 1030; __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 = 1053; __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":1032
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1055
  *                             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 = 1032; __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 = 1055; __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 = 1032; __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 = 1055; __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":1033
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1056
  *                                 # Suffix link reports path is dead end
  *                                 node.children[word_id] = None
  *                                 continue             # <<<<<<<<<<<<<<
@@ -48109,7 +48471,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1036
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1059
  *                             else:
  *                                 # Suffix link indicates lookup is reqired
  *                                 lookup_required = True             # <<<<<<<<<<<<<<
@@ -48123,18 +48485,18 @@ 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":1062
  *                         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 = 1039; __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 = 1062; __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 = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           __pyx_L30:;
         }
@@ -48142,7 +48504,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       __pyx_L27:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1064
  *                             raise Exception("Keyword trie error")
  *                 # checking whether lookup_required
  *                 if lookup_required:             # <<<<<<<<<<<<<<
@@ -48151,7 +48513,7 @@ 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":1042
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
  *                 # checking whether lookup_required
  *                 if lookup_required:
  *                     new_node = None             # <<<<<<<<<<<<<<
@@ -48164,78 +48526,78 @@ 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":1043
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1066
  *                 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 = 1043; __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 = 1066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1069
  *                         # 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)
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-            PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_2));
-            __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
+            PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_1));
+            __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
             PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_16);
             __Pyx_GIVEREF(__pyx_t_16);
             PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_t_15);
             __Pyx_GIVEREF(__pyx_t_15);
             PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_t_11);
             __Pyx_GIVEREF(__pyx_t_11);
-            __pyx_t_2 = 0;
+            __pyx_t_1 = 0;
             __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 = 1056; __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 = 1079; __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;
@@ -48334,7 +48696,7 @@ 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":1057
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1080
  *                             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:             # <<<<<<<<<<<<<<
@@ -48344,24 +48706,24 @@ 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":1058
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1081
  *                             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 = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __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 = 1058; __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 = 1081; __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 = 1058; __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 = 1081; __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 = 1058; __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 = 1081; __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 = 1058; __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 = 1081; __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 = 1058; __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 = 1081; __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));
@@ -48373,7 +48735,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1060
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1083
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])
  *                             else:
  *                                 phrase_location = None             # <<<<<<<<<<<<<<
@@ -48390,7 +48752,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L34:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
  *                                 phrase_location = None
  * 
  *                         if phrase_location is None:             # <<<<<<<<<<<<<<
@@ -48400,19 +48762,19 @@ 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":1063
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
  * 
  *                         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 = 1063; __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 = 1086; __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 = 1063; __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 = 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":1065
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1088
  *                             node.children[word_id] = None
  *                             # Search failed
  *                             continue             # <<<<<<<<<<<<<<
@@ -48424,7 +48786,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L36:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1067
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1090
  *                             continue
  *                         # Search succeeded
  *                         suffix_link = self.rules.root             # <<<<<<<<<<<<<<
@@ -48437,32 +48799,32 @@ 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":1068
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
  *                         # 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 = 1068; __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 = 1091; __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":1069
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
  *                         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 = 1069; __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 = 1092; __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 = 1069; __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 = 1092; __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 = 1069; __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 = 1092; __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);
@@ -48474,35 +48836,35 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L37:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1070
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
  *                         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 = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __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 = 1070; __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 = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1071
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1094
  *                             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 = 1070; __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 = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1072
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1095
  *                         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 = 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;}
+          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 = 1093; __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 = 1093; __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);
@@ -48513,19 +48875,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         __pyx_L33:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1073
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1096
  *                                 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 = 1073; __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 = 1096; __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 = 1073; __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 = 1096; __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":1074
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1097
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node
  *                     node = new_node             # <<<<<<<<<<<<<<
@@ -48538,7 +48900,7 @@ 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":1079
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1102
  *                     This should happen before we get to extraction (so that
  *                     the node will exist if needed)'''
  *                     if arity < self.max_nonterminals:             # <<<<<<<<<<<<<<
@@ -48548,14 +48910,14 @@ 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":1080
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1103
  *                     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
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-          __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_t_11 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_arity + 1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_xcat_index);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_xcat_index);
@@ -48563,17 +48925,17 @@ 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":1081
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1104
  *                     if arity < self.max_nonterminals:
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  *                         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 = 1081; __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 = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1082
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1105
  *                         xcat_index = arity+1
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index             # <<<<<<<<<<<<<<
@@ -48586,24 +48948,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __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":1083
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1106
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:             # <<<<<<<<<<<<<<
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  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
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-          __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;}
+          __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 = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1084
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
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  *                         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,
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-            __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_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 = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index);
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@@ -48614,159 +48976,159 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __pyx_L39:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1108
  *                         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 = 1085; __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 = 1108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
  *                             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 = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __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_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 = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          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;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __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":1087
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
  *                         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],             # <<<<<<<<<<<<<<
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  * 
  */
-          __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_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 = 1110; __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 = 1087; __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 = 1110; __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 = 1087; __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 = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __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 = 1086; __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 = 1109; __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":1088
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  *                                 phrase= Phrase(phrase + (xcat,)))             # <<<<<<<<<<<<<<
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  *                     # sample from range
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-          __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_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __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_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_9);
           __Pyx_GIVEREF(__pyx_t_9);
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-          __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_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 = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
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+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __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 = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
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-          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;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __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 = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
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-          __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_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 = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          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;}
+          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 = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __pyx_L38:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
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+        __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 = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_20 = (!__pyx_t_8);
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1115
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  *                         sample = self.sampler.sample(node.phrase_location)             # <<<<<<<<<<<<<<
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  *                         chunklen = IntList(initial_len=num_subpatterns)
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+          __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 = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __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 = 1092; __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 = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __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 = 1092; __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 = 1115; __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":1093
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
  *                     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 = 1093; __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 = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __Pyx_DECREF(__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":1117
  *                         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 = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __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 = 1094; __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 = 1117; __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 = 1094; __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 = 1117; __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 = 1094; __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 = 1117; __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));
@@ -48775,7 +49137,7 @@ 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":1095
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1118
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:             # <<<<<<<<<<<<<<
@@ -48785,7 +49147,7 @@ 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":1096
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)             # <<<<<<<<<<<<<<
@@ -48795,14 +49157,14 @@ 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":1097
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
  *                         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 = 1097; __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 = 1120; __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));
@@ -48810,7 +49172,7 @@ 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":1098
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)
  *                         extracts = []
  *                         j = 0             # <<<<<<<<<<<<<<
@@ -48819,14 +49181,14 @@ 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":1099
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
  *                         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 = 1099; __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 = 1122; __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);
@@ -48834,7 +49196,7 @@ 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":1100
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1123
  *                         j = 0
  *                         extract_start = monitor_cpu()
  *                         while j < sample.len:             # <<<<<<<<<<<<<<
@@ -48845,14 +49207,14 @@ 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":1101
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
  *                         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 = 1101; __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 = 1124; __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);
@@ -48860,7 +49222,7 @@ 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":1103
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1126
  *                             extract = []
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -48869,21 +49231,21 @@ 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":1104
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1127
  * 
  *                             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 = 1104; __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 = 1127; __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 = 1104; __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 = 1127; __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 = 1104; __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 = 1127; __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);
@@ -48892,14 +49254,14 @@ 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":1105
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1128
  *                             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 = 1105; __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 = 1128; __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);
@@ -48907,22 +49269,22 @@ 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":1106
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1129
  *                             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 = 1106; __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 = 1129; __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 = 1106; __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 = 1129; __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 = 1106; __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 = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_9);
               __pyx_t_21 = Py_TYPE(__pyx_t_9)->tp_iternext;
             }
@@ -48930,23 +49292,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               if (!__pyx_t_21 && PyList_CheckExact(__pyx_t_9)) {
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1130
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@@ -48991,7 +49353,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1132
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-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1133
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1112
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+          __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 = 1135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1113
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+            __pyx_t_11 = __Pyx_GetName(__pyx_m, __pyx_n_s__Counter); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __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 = 1136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49071,23 +49433,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
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+            __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_11 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda4, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __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_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49097,7 +49459,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1115
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1138
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49135,14 +49497,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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+                __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __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 = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_16 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49150,7 +49512,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                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;}
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@@ -49158,7 +49520,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   __pyx_t_16 = PyTuple_GET_ITEM(sequence, 0); 
-                  __pyx_t_2 = PyTuple_GET_ITEM(sequence, 1); 
+                  __pyx_t_1 = PyTuple_GET_ITEM(sequence, 1); 
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                 } else {
                   __pyx_t_16 = PyList_GET_ITEM(sequence, 0); 
-                  __pyx_t_2 = PyList_GET_ITEM(sequence, 1); 
+                  __pyx_t_1 = PyList_GET_ITEM(sequence, 1); 
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-                __Pyx_INCREF(__pyx_t_2);
+                __Pyx_INCREF(__pyx_t_1);
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-                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_2,&__pyx_t_10,&__pyx_t_7};
+                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_1,&__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 = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49201,8 +49563,8 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                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 = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_1,&__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 = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49211,7 +49573,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                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;}
+                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_14), 4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49219,7 +49581,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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                 __pyx_t_18 = NULL;
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-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49229,9 +49591,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __pyx_t_16 = 0;
               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_e);
               __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_e);
-              __Pyx_GIVEREF(__pyx_t_2);
-              __pyx_cur_scope->__pyx_v_e = __pyx_t_2;
-              __pyx_t_2 = 0;
+              __Pyx_GIVEREF(__pyx_t_1);
+              __pyx_cur_scope->__pyx_v_e = __pyx_t_1;
+              __pyx_t_1 = 0;
               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_count);
               __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_count);
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@@ -49248,7 +49610,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1139
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@@ -49257,38 +49619,38 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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               __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 = 1116; __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 = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              __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_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 = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              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;}
+              if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1117
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1140
  *                             for (f, e, count, als), loc in extracts:
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  *                                 fphrases[f][e][als].append(loc)             # <<<<<<<<<<<<<<
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-              __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_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 = 1140; __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 = 1117; __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 = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __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 = 1117; __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 = 1140; __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 = 1117; __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 = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1118
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               PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __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_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 = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49308,7 +49670,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-              if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_f);
@@ -49322,7 +49684,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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               __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1142
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@@ -49332,9 +49694,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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                 PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", "iteritems");
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1142; __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_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 = 1142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49342,7 +49704,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (unlikely(__pyx_t_4 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1142; __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);
@@ -49356,30 +49718,30 @@ 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":1120
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1143
  *                             for f, elist in fphrases.iteritems():
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+                __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 = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                  __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
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+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __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 = 1144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49486,15 +49848,15 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1145
  *                                     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(
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-                __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_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 = 1145; __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 = 1145; __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);
@@ -49502,141 +49864,188 @@ 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":1123
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1146
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))
  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(             # <<<<<<<<<<<<<<
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-                __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_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__FeatureContext); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1146; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_9);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1147
  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(
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  *                                                (k,i+spanlen), locs, input_match,
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-                __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_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 = 1147; __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 = 1124; __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 = 1147; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_7);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1125
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1148
  *                                     scores = self.scorer.score(FeatureContext(
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  *                                                (k,i+spanlen), locs, input_match,             # <<<<<<<<<<<<<<
  *                                                fwords, self.fda, self.eda,
- *                                                meta))
+ *                                                meta,
  */
-                __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_t_10 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_k); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1148; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_10);
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-          __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
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@@ -49729,57 +50141,57 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1131
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1159
  * 
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1132
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-          PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_16);
-          __Pyx_GIVEREF(__pyx_t_16);
+          PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_10);
+          __Pyx_GIVEREF(__pyx_t_10);
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           PyTuple_SET_ITEM(__pyx_t_9, 2, __pyx_cur_scope->__pyx_v_input_match);
           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_input_match);
           PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_t_11);
           __Pyx_GIVEREF(__pyx_t_11);
-          PyTuple_SET_ITEM(__pyx_t_9, 4, __pyx_t_2);
-          __Pyx_GIVEREF(__pyx_t_2);
+          PyTuple_SET_ITEM(__pyx_t_9, 4, __pyx_t_14);
+          __Pyx_GIVEREF(__pyx_t_14);
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@@ -49790,14 +50202,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_is_shadow_path);
           __pyx_t_3 = 0;
-          __pyx_t_16 = 0;
+          __pyx_t_10 = 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 = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_14 = 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 = 1160; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1133
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1161
  *                     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             # <<<<<<<<<<<<<<
@@ -49806,18 +50218,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1134
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1162
  *                         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:             # <<<<<<<<<<<<<<
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  *                     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 = 1134; __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 = 1162; __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":1135
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1163
  *                     num_subpatterns = arity
  *                     if not is_shadow_path:
  *                         num_subpatterns = num_subpatterns + 1             # <<<<<<<<<<<<<<
@@ -49825,18 +50237,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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  */
           __pyx_cur_scope->__pyx_v_num_subpatterns = (__pyx_cur_scope->__pyx_v_num_subpatterns + 1);
-          goto __pyx_L64;
+          goto __pyx_L65;
         }
-        __pyx_L64:;
+        __pyx_L65:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1136
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1164
  *                     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 = 1136; __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 = 1164; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __pyx_t_20 = ((__pyx_t_23 + 1) < __pyx_cur_scope->__pyx_v_self->max_length);
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@@ -49852,7 +50264,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1137
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1165
  *                         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)             # <<<<<<<<<<<<<<
@@ -49861,39 +50273,39 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __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":1138
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1166
  *                     if len(phrase)+1 < self.max_length and arity < self.max_nonterminals and num_subpatterns < self.max_chunks:
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  *                         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 = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1149
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1150
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1178
  *                         for (i, alt, pathlen) in frontier_nodes:
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  * 
- *         stop_time = monitor_cpu()
+ *         # Online rule extraction and scoring
  */
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     __Pyx_GOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_frontier));
@@ -50208,98 +50620,603 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1152
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+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1181
+ * 
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+ *             for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
+ */
+  if (__pyx_cur_scope->__pyx_v_self->online) {
+
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
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+ *             for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
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+ */
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1154
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1155
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+  __pyx_t_11 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1205; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -50319,7 +51236,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   return NULL;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1158
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1208
  * 
  * 
  *     cdef int find_fixpoint(self,             # <<<<<<<<<<<<<<
@@ -50349,7 +51266,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
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   __Pyx_RefNannySetupContext("find_fixpoint", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1173
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1223
  *         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             # <<<<<<<<<<<<<<
@@ -50358,7 +51275,7 @@ 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":1174
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1224
  * 
  *         e_low[0] = e_in_low
  *         e_high[0] = e_in_high             # <<<<<<<<<<<<<<
@@ -50367,19 +51284,19 @@ 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":1175
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1225
  *         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)             # <<<<<<<<<<<<<<
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+  __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 = 1225; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1176
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1226
  *         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:             # <<<<<<<<<<<<<<
@@ -50389,7 +51306,7 @@ 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":1182
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1232
  *             # rule X -> X_1 w X_2 / X_1 X_2.    This is probably
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  *             return 0             # <<<<<<<<<<<<<<
@@ -50401,7 +51318,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     goto __pyx_L3;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1183
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1233
  *             # not worth the bother, though.
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  *         elif e_in_low != -1 and e_low[0] != e_in_low:             # <<<<<<<<<<<<<<
@@ -50417,7 +51334,7 @@ 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":1184
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1234
  *             return 0
  *         elif e_in_low != -1 and e_low[0] != e_in_low:
  *             if e_in_low - e_low[0] < min_ex_size:             # <<<<<<<<<<<<<<
@@ -50427,7 +51344,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
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     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1185
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1235
  *         elif e_in_low != -1 and e_low[0] != e_in_low:
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@@ -50436,7 +51353,7 @@ 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":1186
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1236
  *             if e_in_low - e_low[0] < min_ex_size:
  *                 e_low[0] = e_in_low - min_ex_size
  *                 if e_low[0] < 0:             # <<<<<<<<<<<<<<
@@ -50446,7 +51363,7 @@ 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":1187
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1237
  *                 e_low[0] = e_in_low - min_ex_size
  *                 if e_low[0] < 0:
  *                     return 0             # <<<<<<<<<<<<<<
@@ -50465,7 +51382,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1189
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1239
  *                     return 0
  * 
  *         if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -50475,7 +51392,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
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   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1190
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
  * 
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0             # <<<<<<<<<<<<<<
@@ -50487,7 +51404,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     goto __pyx_L6;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1191
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1241
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:             # <<<<<<<<<<<<<<
@@ -50503,7 +51420,7 @@ 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":1192
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:
  *             if e_high[0] - e_in_high < min_ex_size:             # <<<<<<<<<<<<<<
@@ -50513,7 +51430,7 @@ 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":1193
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1243
  *         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             # <<<<<<<<<<<<<<
@@ -50522,7 +51439,7 @@ 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":1194
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1244
  *             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:             # <<<<<<<<<<<<<<
@@ -50532,7 +51449,7 @@ 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":1195
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1245
  *                 e_high[0] = e_in_high + min_ex_size
  *                 if e_high[0] > e_sent_len:
  *                     return 0             # <<<<<<<<<<<<<<
@@ -50551,7 +51468,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1197
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
  *                     return 0
  * 
  *         f_back_low[0] = -1             # <<<<<<<<<<<<<<
@@ -50560,7 +51477,7 @@ 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":1198
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1248
  * 
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1             # <<<<<<<<<<<<<<
@@ -50569,7 +51486,7 @@ 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":1199
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1249
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1
  *         f_low_prev = f_low             # <<<<<<<<<<<<<<
@@ -50578,17 +51495,17 @@ 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":1200
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1250
  *         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 = 1200; __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 = 1250; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_f_high_prev = __pyx_t_1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1201
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
  *         f_low_prev = f_low
  *         f_high_prev = f_high
  *         new_x = 0             # <<<<<<<<<<<<<<
@@ -50597,7 +51514,7 @@ 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":1202
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1252
  *         f_high_prev = f_high
  *         new_x = 0
  *         new_low_x = 0             # <<<<<<<<<<<<<<
@@ -50606,7 +51523,7 @@ 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":1203
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1253
  *         new_x = 0
  *         new_low_x = 0
  *         new_high_x = 0             # <<<<<<<<<<<<<<
@@ -50615,7 +51532,7 @@ 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":1205
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1255
  *         new_high_x = 0
  * 
  *         while True:             # <<<<<<<<<<<<<<
@@ -50625,7 +51542,7 @@ 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":1207
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
  *         while True:
  * 
  *             if f_back_low[0] == -1:             # <<<<<<<<<<<<<<
@@ -50635,45 +51552,45 @@ 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":1208
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1258
  * 
  *             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 = 1208; __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 = 1258; __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":1210
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1260
  *                 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 = 1210; __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 = 1260; __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":1211
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1261
  *             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 = 1211; __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 = 1261; __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":1213
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1263
  *                 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:             # <<<<<<<<<<<<<<
@@ -50683,7 +51600,7 @@ 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":1214
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
  * 
  *             if f_back_low[0] > f_low:
  *                 f_back_low[0] = f_low             # <<<<<<<<<<<<<<
@@ -50695,35 +51612,35 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1216
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1266
  *                 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 = 1216; __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 = 1266; __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 = 1216; __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 = 1266; __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 = 1216; __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 = 1266; __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":1217
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1267
  * 
  *             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 = 1217; __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 = 1267; __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":1219
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1269
  *                 f_back_high[0] = f_high
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:             # <<<<<<<<<<<<<<
@@ -50739,7 +51656,7 @@ 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":1220
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1270
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -50752,7 +51669,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1222
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1272
  *                 return 1
  * 
  *             if allow_low_x == 0 and f_back_low[0] < f_low:             # <<<<<<<<<<<<<<
@@ -50768,7 +51685,7 @@ 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":1224
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1274
  *             if allow_low_x == 0 and f_back_low[0] < f_low:
  *                 # FAIL: f phrase is not tight
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50781,7 +51698,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1226
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1276
  *                 return 0
  * 
  *             if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50791,7 +51708,7 @@ 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":1228
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
  *             if f_back_high[0] - f_back_low[0] > max_f_len:
  *                 # FAIL: f back projection is too wide
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50804,7 +51721,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1230
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1280
  *                 return 0
  * 
  *             if allow_high_x == 0 and f_back_high[0] > f_high:             # <<<<<<<<<<<<<<
@@ -50813,11 +51730,11 @@ 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 = 1230; __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 = 1280; __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 = 1230; __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 = 1280; __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 = 1230; __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 = 1280; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __pyx_t_4 = __pyx_t_3;
     } else {
@@ -50825,7 +51742,7 @@ 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":1232
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1282
  *             if allow_high_x == 0 and f_back_high[0] > f_high:
  *                 # FAIL: extension on high side not allowed
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50838,7 +51755,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1234
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1284
  *                 return 0
  * 
  *             if f_low != f_back_low[0]:             # <<<<<<<<<<<<<<
@@ -50848,7 +51765,7 @@ 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":1235
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1285
  * 
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:             # <<<<<<<<<<<<<<
@@ -50858,7 +51775,7 @@ 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":1236
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1286
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -50868,7 +51785,7 @@ 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":1238
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1288
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on low side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50881,7 +51798,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1290
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -50890,7 +51807,7 @@ 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":1241
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1291
  *                     else:
  *                         new_x = new_x + 1
  *                         new_low_x = 1             # <<<<<<<<<<<<<<
@@ -50904,7 +51821,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L19:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
  *                         new_x = new_x + 1
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:             # <<<<<<<<<<<<<<
@@ -50914,7 +51831,7 @@ 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":1243
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:
  *                     f_back_low[0] = f_low - min_fx_size             # <<<<<<<<<<<<<<
@@ -50923,7 +51840,7 @@ 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":1244
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1294
  *                 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:             # <<<<<<<<<<<<<<
@@ -50933,7 +51850,7 @@ 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":1246
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1296
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50946,7 +51863,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1297
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0
  *                     if f_back_low[0] < 0:             # <<<<<<<<<<<<<<
@@ -50956,7 +51873,7 @@ 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":1249
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1299
  *                     if f_back_low[0] < 0:
  *                         # FAIL: extension required on low side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50975,22 +51892,22 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L18:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1301
  *                         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 = 1251; __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 = 1301; __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 = 1251; __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 = 1301; __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 = 1251; __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 = 1301; __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":1252
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1302
  * 
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:             # <<<<<<<<<<<<<<
@@ -51000,7 +51917,7 @@ 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":1253
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1303
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -51010,7 +51927,7 @@ 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":1255
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on high side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51023,7 +51940,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1307
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -51032,7 +51949,7 @@ 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":1258
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1308
  *                     else:
  *                         new_x = new_x + 1
  *                         new_high_x = 1             # <<<<<<<<<<<<<<
@@ -51046,44 +51963,44 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L25:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1259
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1309
  *                         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 = 1259; __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 = 1309; __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 = 1259; __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 = 1309; __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 = 1259; __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 = 1309; __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 = 1259; __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 = 1309; __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 = 1259; __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 = 1309; __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":1260
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1310
  *                         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 = 1260; __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 = 1310; __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 = 1260; __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 = 1310; __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 = 1260; __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 = 1310; __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":1261
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1311
  *                 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:             # <<<<<<<<<<<<<<
@@ -51093,7 +52010,7 @@ 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":1263
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1313
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51106,7 +52023,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L28:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1314
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0
  *                     if f_back_high[0] > f_sent_len:             # <<<<<<<<<<<<<<
@@ -51116,7 +52033,7 @@ 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":1266
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1316
  *                     if f_back_high[0] > f_sent_len:
  *                         # FAIL: extension required on high side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51135,7 +52052,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L24:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1268
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1318
  *                         return 0
  * 
  *             e_low_prev = e_low[0]             # <<<<<<<<<<<<<<
@@ -51144,7 +52061,7 @@ 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":1269
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1319
  * 
  *             e_low_prev = e_low[0]
  *             e_high_prev = e_high[0]             # <<<<<<<<<<<<<<
@@ -51153,29 +52070,29 @@ 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":1271
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1321
  *             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 = 1271; __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 = 1321; __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":1272
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1322
  * 
  *             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 = 1272; __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 = 1322; __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":1273
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1323
  *             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:             # <<<<<<<<<<<<<<
@@ -51191,7 +52108,7 @@ 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":1274
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1324
  *             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             # <<<<<<<<<<<<<<
@@ -51204,7 +52121,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L30:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1275
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1325
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1
  *             if allow_arbitrary_x == 0:             # <<<<<<<<<<<<<<
@@ -51214,7 +52131,7 @@ 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":1277
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1327
  *             if allow_arbitrary_x == 0:
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0             # <<<<<<<<<<<<<<
@@ -51227,7 +52144,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L31:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1328
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0
  *             if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -51237,7 +52154,7 @@ 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":1280
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1330
  *             if e_high[0] - e_low[0] > max_e_len:
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0             # <<<<<<<<<<<<<<
@@ -51250,7 +52167,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L32:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1281
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0
  *             f_low_prev = f_back_low[0]             # <<<<<<<<<<<<<<
@@ -51259,7 +52176,7 @@ 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":1282
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1332
  *                 return 0
  *             f_low_prev = f_back_low[0]
  *             f_high_prev = f_back_high[0]             # <<<<<<<<<<<<<<
@@ -51282,7 +52199,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1285
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
  * 
  * 
  *     cdef find_projection(self, int in_low, int in_high, int* in_links_low, int* in_links_high,             # <<<<<<<<<<<<<<
@@ -51300,7 +52217,7 @@ 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":1288
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1338
  *                         int* out_low, int* out_high):
  *         cdef int i
  *         for i from in_low <= i < in_high:             # <<<<<<<<<<<<<<
@@ -51310,7 +52227,7 @@ 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":1289
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
  *         cdef int i
  *         for i from in_low <= i < in_high:
  *             if in_links_low[i] != -1:             # <<<<<<<<<<<<<<
@@ -51320,7 +52237,7 @@ 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":1290
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1340
  *         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]:             # <<<<<<<<<<<<<<
@@ -51336,7 +52253,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1291
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1341
  *             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]             # <<<<<<<<<<<<<<
@@ -51348,7 +52265,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       __pyx_L6:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1342
  *                 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]:             # <<<<<<<<<<<<<<
@@ -51364,7 +52281,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1343
  *                     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]             # <<<<<<<<<<<<<<
@@ -51386,7 +52303,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1296
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
  * 
  * 
  *     cdef int* int_arr_extend(self, int* arr, int* arr_len, int* data, int data_len):             # <<<<<<<<<<<<<<
@@ -51400,7 +52317,7 @@ 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":1298
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1348
  *     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             # <<<<<<<<<<<<<<
@@ -51409,7 +52326,7 @@ 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":1299
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1349
  *         cdef int new_len
  *         new_len = arr_len[0] + data_len
  *         arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -51418,7 +52335,7 @@ 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":1300
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1350
  *         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))             # <<<<<<<<<<<<<<
@@ -51427,7 +52344,7 @@ 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":1301
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
  *         arr = <int*> realloc(arr, new_len*sizeof(int))
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -51436,7 +52353,7 @@ 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":1302
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1352
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len
  *         return arr             # <<<<<<<<<<<<<<
@@ -51452,7 +52369,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
  * 
  * 
  *     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,             # <<<<<<<<<<<<<<
@@ -51498,19 +52415,19 @@ 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":1313
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1363
  *         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 = 1313; __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 = 1363; __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":1314
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1364
  * 
  *         result = []
  *         len1 = 0             # <<<<<<<<<<<<<<
@@ -51519,7 +52436,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1315
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1365
  *         result = []
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51528,19 +52445,19 @@ 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":1316
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1366
  *         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 = 1316; __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 = 1366; __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":1318
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1368
  *         ephr_arr = IntList()
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))             # <<<<<<<<<<<<<<
@@ -51549,7 +52466,7 @@ 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":1319
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1369
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:             # <<<<<<<<<<<<<<
@@ -51559,7 +52476,7 @@ 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":1320
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1370
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0             # <<<<<<<<<<<<<<
@@ -51568,7 +52485,7 @@ 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":1321
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1371
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -51578,7 +52495,7 @@ 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":1322
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1372
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:             # <<<<<<<<<<<<<<
@@ -51588,7 +52505,7 @@ 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":1323
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51598,7 +52515,7 @@ 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":1324
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1374
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:             # <<<<<<<<<<<<<<
@@ -51608,7 +52525,7 @@ 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":1325
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]             # <<<<<<<<<<<<<<
@@ -51618,7 +52535,7 @@ 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":1326
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1376
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i             # <<<<<<<<<<<<<<
@@ -51627,7 +52544,7 @@ 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":1327
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i
  *                         break             # <<<<<<<<<<<<<<
@@ -51641,7 +52558,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1329
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
  *                         break
  *                 else:
  *                     e_gap_order[i] = i             # <<<<<<<<<<<<<<
@@ -51656,7 +52573,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
  *                     e_gap_order[i] = i
  * 
  *         e_x_low = e_low             # <<<<<<<<<<<<<<
@@ -51665,7 +52582,7 @@ 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":1332
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1382
  * 
  *         e_x_low = e_low
  *         e_x_high = e_high             # <<<<<<<<<<<<<<
@@ -51674,7 +52591,7 @@ 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":1333
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1383
  *         e_x_low = e_low
  *         e_x_high = e_high
  *         if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51684,7 +52601,7 @@ 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":1334
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1384
  *         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:             # <<<<<<<<<<<<<<
@@ -51707,7 +52624,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1385
  *         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             # <<<<<<<<<<<<<<
@@ -51717,7 +52634,7 @@ 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":1336
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1386
  *             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:             # <<<<<<<<<<<<<<
@@ -51740,7 +52657,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_2) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1337
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
  *                 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             # <<<<<<<<<<<<<<
@@ -51753,7 +52670,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L11:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1389
  *                 e_x_high = e_x_high + 1
  * 
  *         for i from e_x_low <= i <= e_low:             # <<<<<<<<<<<<<<
@@ -51763,7 +52680,7 @@ 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":1340
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
  * 
  *         for i from e_x_low <= i <= e_low:
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)             # <<<<<<<<<<<<<<
@@ -51773,7 +52690,7 @@ 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":1342
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1392
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)
  * 
  *         for i from 0 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -51783,7 +52700,7 @@ 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":1343
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1393
  * 
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51792,7 +52709,7 @@ 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":1344
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)
  *             len2 = 0             # <<<<<<<<<<<<<<
@@ -51801,7 +52718,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_len2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1396
  *             len2 = 0
  * 
  *             j = e_gap_order[i]             # <<<<<<<<<<<<<<
@@ -51810,7 +52727,7 @@ 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":1347
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1397
  * 
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]             # <<<<<<<<<<<<<<
@@ -51819,7 +52736,7 @@ 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":1348
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1398
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]             # <<<<<<<<<<<<<<
@@ -51828,7 +52745,7 @@ 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":1349
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1399
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]
  *             if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51838,7 +52755,7 @@ 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":1350
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
  *             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:             # <<<<<<<<<<<<<<
@@ -51855,7 +52772,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_7) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1401
  *             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             # <<<<<<<<<<<<<<
@@ -51865,7 +52782,7 @@ 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":1352
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
  *                 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:             # <<<<<<<<<<<<<<
@@ -51882,7 +52799,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_6) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1353
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1403
  *                     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             # <<<<<<<<<<<<<<
@@ -51895,7 +52812,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
     __pyx_L20:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1405
  *                     e_x_gap_high = e_x_gap_high + 1
  * 
  *             k = 0             # <<<<<<<<<<<<<<
@@ -51904,7 +52821,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_k = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1356
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1406
  * 
  *             k = 0
  *             step = 1+(i*2)             # <<<<<<<<<<<<<<
@@ -51913,7 +52830,7 @@ 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":1357
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1407
  *             k = 0
  *             step = 1+(i*2)
  *             while k < len1:             # <<<<<<<<<<<<<<
@@ -51924,7 +52841,7 @@ 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":1358
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1408
  *             step = 1+(i*2)
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51934,7 +52851,7 @@ 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":1359
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1409
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:
  *                     if m >= e_gaps1[k+step-1]:             # <<<<<<<<<<<<<<
@@ -51944,7 +52861,7 @@ 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":1360
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1410
  *                 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:             # <<<<<<<<<<<<<<
@@ -51954,7 +52871,7 @@ 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":1361
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1411
  *                     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             # <<<<<<<<<<<<<<
@@ -51964,7 +52881,7 @@ 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":1362
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1412
  *                         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)             # <<<<<<<<<<<<<<
@@ -51973,7 +52890,7 @@ 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":1363
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1413
  *                             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)             # <<<<<<<<<<<<<<
@@ -51982,7 +52899,7 @@ 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":1364
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1414
  *                                 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)             # <<<<<<<<<<<<<<
@@ -51999,7 +52916,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_L29:;
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1365
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1415
  *                                 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             # <<<<<<<<<<<<<<
@@ -52009,7 +52926,7 @@ 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":1366
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1416
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)
  *                 k = k + step
  *             free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -52018,7 +52935,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     free(__pyx_v_e_gaps1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1367
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1417
  *                 k = k + step
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -52027,7 +52944,7 @@ 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":1368
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1418
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2
  *             len1 = len2             # <<<<<<<<<<<<<<
@@ -52037,7 +52954,7 @@ 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":1370
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1420
  *             len1 = len2
  * 
  *         step = 1+(num_gaps*2)             # <<<<<<<<<<<<<<
@@ -52046,7 +52963,7 @@ 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":1371
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1421
  * 
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -52055,7 +52972,7 @@ 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":1372
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1422
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0             # <<<<<<<<<<<<<<
@@ -52064,7 +52981,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1423
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:             # <<<<<<<<<<<<<<
@@ -52074,7 +52991,7 @@ 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":1374
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1424
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:
  *             j = 0             # <<<<<<<<<<<<<<
@@ -52083,7 +53000,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_j = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1425
  *         for i from e_high <= i <= e_x_high:
  *             j = 0
  *             while j < len1:             # <<<<<<<<<<<<<<
@@ -52094,7 +53011,7 @@ 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":1376
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1426
  *             j = 0
  *             while j < len1:
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:             # <<<<<<<<<<<<<<
@@ -52110,7 +53027,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1427
  *             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)             # <<<<<<<<<<<<<<
@@ -52119,7 +53036,7 @@ 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":1378
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1428
  *                 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)             # <<<<<<<<<<<<<<
@@ -52131,7 +53048,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L37:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1429
  *                     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             # <<<<<<<<<<<<<<
@@ -52142,7 +53059,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1380
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1430
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)
  *                 j = j + step
  *         free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -52151,7 +53068,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gaps1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1431
  *                 j = j + step
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -52160,7 +53077,7 @@ 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":1382
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1432
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2
  *         len1 = len2             # <<<<<<<<<<<<<<
@@ -52169,7 +53086,7 @@ 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":1384
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1434
  *         len1 = len2
  * 
  *         step = (num_gaps+1)*2             # <<<<<<<<<<<<<<
@@ -52178,7 +53095,7 @@ 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":1385
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1435
  * 
  *         step = (num_gaps+1)*2
  *         i = 0             # <<<<<<<<<<<<<<
@@ -52187,7 +53104,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1437
  *         i = 0
  * 
  *         while i < len1:             # <<<<<<<<<<<<<<
@@ -52198,7 +53115,7 @@ 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":1388
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1438
  * 
  *         while i < len1:
  *             ephr_arr._clear()             # <<<<<<<<<<<<<<
@@ -52207,7 +53124,7 @@ 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":1389
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1439
  *         while i < len1:
  *             ephr_arr._clear()
  *             num_chunks = 0             # <<<<<<<<<<<<<<
@@ -52216,20 +53133,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_num_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1440
  *             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 = 1390; __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 = 1440; __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":1391
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1441
  *             num_chunks = 0
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:             # <<<<<<<<<<<<<<
@@ -52239,7 +53156,7 @@ 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":1392
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1442
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:             # <<<<<<<<<<<<<<
@@ -52249,7 +53166,7 @@ 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":1393
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1443
  *             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             # <<<<<<<<<<<<<<
@@ -52261,7 +53178,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1444
  *                 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]:             # <<<<<<<<<<<<<<
@@ -52271,19 +53188,19 @@ 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":1395
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1445
  *                     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 = 1395; __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 = 1445; __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 = 1395; __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 = 1445; __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":1396
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1446
  *                 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]])             # <<<<<<<<<<<<<<
@@ -52291,14 +53208,14 @@ 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 = 1396; __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 = 1446; __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 = 1396; __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 = 1446; __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":1397
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1447
  *                     indexes.append(k)
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:             # <<<<<<<<<<<<<<
@@ -52308,19 +53225,19 @@ 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":1398
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1448
  *                     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 = 1398; __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 = 1448; __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 = 1398; __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 = 1448; __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":1399
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1449
  *                 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))             # <<<<<<<<<<<<<<
@@ -52333,7 +53250,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_L45:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1450
  *                     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             # <<<<<<<<<<<<<<
@@ -52342,7 +53259,7 @@ 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":1401
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1451
  *                     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:             # <<<<<<<<<<<<<<
@@ -52358,22 +53275,22 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1452
  *             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 = 1402; __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 = 1452; __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 = 1402; __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 = 1452; __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 = 1402; __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 = 1452; __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);
@@ -52381,7 +53298,7 @@ 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 = 1402; __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 = 1452; __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;
@@ -52390,7 +53307,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_L46:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1404
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1454
  *                 result.append((Phrase(ephr_arr),indexes))
  * 
  *         free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -52399,7 +53316,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gaps1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1405
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1455
  * 
  *         free(e_gaps1)
  *         free(e_gap_order)             # <<<<<<<<<<<<<<
@@ -52408,7 +53325,7 @@ 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":1406
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1456
  *         free(e_gaps1)
  *         free(e_gap_order)
  *         return result             # <<<<<<<<<<<<<<
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  *         fphr_arr = IntList()
  *         phrase_len = phrase.n             # <<<<<<<<<<<<<<
@@ -52776,19 +53693,19 @@ 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":1438
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1488
  *         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 = 1438; __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 = 1488; __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":1439
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1489
  *         phrase_len = phrase.n
  *         extracts = []
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)             # <<<<<<<<<<<<<<
@@ -52797,7 +53714,7 @@ 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":1441
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]             # <<<<<<<<<<<<<<
@@ -52806,7 +53723,7 @@ 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":1442
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]             # <<<<<<<<<<<<<<
@@ -52815,7 +53732,7 @@ 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":1443
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
  *         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             # <<<<<<<<<<<<<<
@@ -52824,7 +53741,7 @@ 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":1444
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
  *         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]             # <<<<<<<<<<<<<<
@@ -52833,7 +53750,7 @@ 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":1445
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
  *         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]             # <<<<<<<<<<<<<<
@@ -52842,7 +53759,7 @@ 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":1446
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
  *         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             # <<<<<<<<<<<<<<
@@ -52851,21 +53768,21 @@ 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":1448
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1498
  *         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 = 1448; __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 = 1498; __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 = 1448; __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 = 1498; __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":1449
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1499
  * 
  *         self.findexes1.reset()
  *         sofar = 0             # <<<<<<<<<<<<<<
@@ -52875,7 +53792,7 @@ 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":1450
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1500
  *         self.findexes1.reset()
  *         sofar = 0
  *         for i in range(num_chunks):             # <<<<<<<<<<<<<<
@@ -52886,7 +53803,7 @@ 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":1451
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1501
  *         sofar = 0
  *         for i in range(num_chunks):
  *             for j in range(chunklen[i]):             # <<<<<<<<<<<<<<
@@ -52897,35 +53814,35 @@ 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":1452
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1502
  *         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 = 1452; __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 = 1502; __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 = 1452; __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 = 1502; __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":1453
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1503
  *             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 = 1453; __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 = 1503; __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":1454
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);
  *                 sofar += 1
  *             if (i+1<num_chunks):             # <<<<<<<<<<<<<<
@@ -52935,28 +53852,28 @@ 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":1455
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1505
  *                 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 = 1455; __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 = 1505; __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 = 1455; __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 = 1505; __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":1456
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1506
  *             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 = 1456; __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 = 1506; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_v_sofar);
       __pyx_v_sofar = __pyx_t_2;
@@ -52966,7 +53883,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_L7:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1459
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1509
  * 
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52975,7 +53892,7 @@ 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":1460
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1510
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52984,7 +53901,7 @@ 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":1461
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1511
  *         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))             # <<<<<<<<<<<<<<
@@ -52993,7 +53910,7 @@ 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":1462
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
  *         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))             # <<<<<<<<<<<<<<
@@ -53002,7 +53919,7 @@ 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":1463
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1513
  *         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))             # <<<<<<<<<<<<<<
@@ -53011,7 +53928,7 @@ 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":1464
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1514
  *         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))             # <<<<<<<<<<<<<<
@@ -53020,7 +53937,7 @@ 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":1465
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1515
  *         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))             # <<<<<<<<<<<<<<
@@ -53029,7 +53946,7 @@ 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":1466
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1516
  *         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))             # <<<<<<<<<<<<<<
@@ -53038,7 +53955,7 @@ 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":1467
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1517
  *         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))             # <<<<<<<<<<<<<<
@@ -53047,7 +53964,7 @@ 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":1468
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1518
  *         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))             # <<<<<<<<<<<<<<
@@ -53056,7 +53973,7 @@ 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":1469
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
  *         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))             # <<<<<<<<<<<<<<
@@ -53065,7 +53982,7 @@ 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":1470
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1520
  *         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))             # <<<<<<<<<<<<<<
@@ -53074,7 +53991,7 @@ 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":1472
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1522
  *         memset(e_gap_high, 0, (num_chunks+1)*sizeof(int))
  * 
  *         reason_for_failure = ""             # <<<<<<<<<<<<<<
@@ -53084,7 +54001,7 @@ 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":1474
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1524
  *         reason_for_failure = ""
  * 
  *         for i from 0 <= i < e_sent_len:             # <<<<<<<<<<<<<<
@@ -53094,7 +54011,7 @@ 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":1475
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1525
  * 
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -53103,7 +54020,7 @@ 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":1476
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -53113,7 +54030,7 @@ 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":1477
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1527
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:             # <<<<<<<<<<<<<<
@@ -53123,7 +54040,7 @@ 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":1478
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1528
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -53132,7 +54049,7 @@ 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":1479
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1529
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1
  *             f_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -53142,7 +54059,7 @@ 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":1485
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1535
  *         # links that we care about (but then how to look up
  *         # when we want to check something on the e side?)
  *         i = 0             # <<<<<<<<<<<<<<
@@ -53151,7 +54068,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1486
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1536
  *         # when we want to check something on the e side?)
  *         i = 0
  *         while i < num_links*2:             # <<<<<<<<<<<<<<
@@ -53162,7 +54079,7 @@ 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":1487
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1537
  *         i = 0
  *         while i < num_links*2:
  *             f_i = sent_links[i]             # <<<<<<<<<<<<<<
@@ -53171,7 +54088,7 @@ 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":1488
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1538
  *         while i < num_links*2:
  *             f_i = sent_links[i]
  *             e_i = sent_links[i+1]             # <<<<<<<<<<<<<<
@@ -53180,7 +54097,7 @@ 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":1489
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
  *             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:             # <<<<<<<<<<<<<<
@@ -53196,7 +54113,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1490
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1540
  *             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             # <<<<<<<<<<<<<<
@@ -53208,7 +54125,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1541
  *             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:             # <<<<<<<<<<<<<<
@@ -53224,7 +54141,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_8) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1542
  *                 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             # <<<<<<<<<<<<<<
@@ -53236,7 +54153,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1543
  *             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:             # <<<<<<<<<<<<<<
@@ -53252,7 +54169,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1544
  *                 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             # <<<<<<<<<<<<<<
@@ -53264,7 +54181,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1545
  *             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:             # <<<<<<<<<<<<<<
@@ -53280,7 +54197,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1546
  *                 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             # <<<<<<<<<<<<<<
@@ -53292,7 +54209,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1497
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1547
  *             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             # <<<<<<<<<<<<<<
@@ -53302,19 +54219,19 @@ 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":1499
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1549
  *             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 = 1499; __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 = 1549; __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":1500
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1550
  * 
  *         als = []
  *         for x in range(matching.start,matching.end):             # <<<<<<<<<<<<<<
@@ -53325,18 +54242,18 @@ 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":1501
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
  *         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 = 1501; __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 = 1551; __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 = 1501; __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 = 1551; __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 = 1501; __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 = 1551; __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);
@@ -53348,17 +54265,17 @@ 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":1502
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1552
  *         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 = 1502; __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 = 1552; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1554
  *             als.append(al)
  *         # check all source-side alignment constraints
  *         met_constraints = 1             # <<<<<<<<<<<<<<
@@ -53367,7 +54284,7 @@ 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":1505
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1555
  *         # check all source-side alignment constraints
  *         met_constraints = 1
  *         if self.require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -53376,7 +54293,7 @@ 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":1506
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
  *         met_constraints = 1
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0             # <<<<<<<<<<<<<<
@@ -53385,7 +54302,7 @@ 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":1507
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1557
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:             # <<<<<<<<<<<<<<
@@ -53395,7 +54312,7 @@ 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":1508
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1558
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:
  *                 for j from 0 <= j < chunklen[i]:             # <<<<<<<<<<<<<<
@@ -53405,7 +54322,7 @@ 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":1509
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1559
  *             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:             # <<<<<<<<<<<<<<
@@ -53415,7 +54332,7 @@ 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":1510
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1560
  *                 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             # <<<<<<<<<<<<<<
@@ -53424,7 +54341,7 @@ 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":1511
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1561
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break             # <<<<<<<<<<<<<<
@@ -53439,7 +54356,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_L24_break:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break
  *             if num_aligned_chunks == 0:             # <<<<<<<<<<<<<<
@@ -53449,7 +54366,7 @@ 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":1513
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1563
  *                         break
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"             # <<<<<<<<<<<<<<
@@ -53460,7 +54377,7 @@ 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":1514
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1564
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53472,7 +54389,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L26:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1515
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1565
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:             # <<<<<<<<<<<<<<
@@ -53487,7 +54404,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1516
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1566
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"             # <<<<<<<<<<<<<<
@@ -53498,7 +54415,7 @@ 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":1517
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1567
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53513,7 +54430,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L20:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1569
  *                 met_constraints = 0
  * 
  *         if met_constraints and self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53528,7 +54445,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   if (__pyx_t_9) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1521
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1571
  *         if met_constraints and self.tight_phrases:
  *             # outside edge constraints are checked later
  *             for i from 0 <= i < num_chunks-1:             # <<<<<<<<<<<<<<
@@ -53538,7 +54455,7 @@ 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":1522
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1572
  *             # 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:             # <<<<<<<<<<<<<<
@@ -53548,7 +54465,7 @@ 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":1523
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1573
  *             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"             # <<<<<<<<<<<<<<
@@ -53559,7 +54476,7 @@ 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":1524
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1574
  *                 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             # <<<<<<<<<<<<<<
@@ -53568,7 +54485,7 @@ 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":1525
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1575
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -53580,7 +54497,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L31:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
  *                     met_constraints = 0
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:             # <<<<<<<<<<<<<<
@@ -53590,7 +54507,7 @@ 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":1527
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1577
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"             # <<<<<<<<<<<<<<
@@ -53601,7 +54518,7 @@ 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":1528
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1578
  *                 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             # <<<<<<<<<<<<<<
@@ -53610,7 +54527,7 @@ 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":1529
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -53627,7 +54544,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L28:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1531
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1581
  *                     break
  * 
  *         f_low = matching.arr[matching.start] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53636,7 +54553,7 @@ 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":1532
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
  * 
  *         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             # <<<<<<<<<<<<<<
@@ -53645,7 +54562,7 @@ 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":1533
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1583
  *         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:             # <<<<<<<<<<<<<<
@@ -53654,17 +54571,17 @@ 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":1535
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1585
  *         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 = 1535; __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 = 1585; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1589
  *                                 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):             # <<<<<<<<<<<<<<
@@ -53675,7 +54592,7 @@ 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":1540
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
  *                                 self.train_min_gap_size, 0,
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0             # <<<<<<<<<<<<<<
@@ -53684,7 +54601,7 @@ 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":1541
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1591
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0
  *                 num_gaps = 0             # <<<<<<<<<<<<<<
@@ -53693,7 +54610,7 @@ 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":1543
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1593
  *                 num_gaps = 0
  * 
  *                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -53703,7 +54620,7 @@ 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":1544
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1594
  * 
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low             # <<<<<<<<<<<<<<
@@ -53712,7 +54629,7 @@ 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":1545
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1595
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low             # <<<<<<<<<<<<<<
@@ -53721,7 +54638,7 @@ 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":1546
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1596
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1             # <<<<<<<<<<<<<<
@@ -53730,7 +54647,7 @@ 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":1547
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1597
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1
  *                     gap_start = 0             # <<<<<<<<<<<<<<
@@ -53739,7 +54656,7 @@ 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":1548
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
  *                     num_gaps = 1
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53748,7 +54665,7 @@ 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":1549
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1599
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53758,7 +54675,7 @@ 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":1550
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1600
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53770,7 +54687,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L36:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1601
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53779,7 +54696,7 @@ 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":1552
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1602
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -53795,7 +54712,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1553
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -53804,7 +54721,7 @@ 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":1554
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1604
  *                         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"             # <<<<<<<<<<<<<<
@@ -53824,7 +54741,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1606
  *                             reason_for_failure = "Inside edges of preceding subphrase are not tight"
  *                 else:
  *                     gap_start = 1             # <<<<<<<<<<<<<<
@@ -53833,7 +54750,7 @@ 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":1557
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1607
  *                 else:
  *                     gap_start = 1
  *                     if self.tight_phrases and f_links_low[f_low] == -1:             # <<<<<<<<<<<<<<
@@ -53848,7 +54765,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1560
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
  *                         # 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             # <<<<<<<<<<<<<<
@@ -53862,7 +54779,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L35:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1612
  *                         met_constraints = 0
  * 
  *                 for i from 0 <= i < matching.size - 1:             # <<<<<<<<<<<<<<
@@ -53872,7 +54789,7 @@ 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":1563
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1613
  * 
  *                 for i from 0 <= i < matching.size - 1:
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53881,7 +54798,7 @@ 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":1564
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
  *                 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             # <<<<<<<<<<<<<<
@@ -53890,7 +54807,7 @@ 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":1565
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1615
  *                     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             # <<<<<<<<<<<<<<
@@ -53900,7 +54817,7 @@ 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":1567
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1617
  *                     num_gaps = num_gaps + 1
  * 
  *                 if f_high < f_back_high:             # <<<<<<<<<<<<<<
@@ -53910,7 +54827,7 @@ 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":1568
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1618
  * 
  *                 if f_high < f_back_high:
  *                     f_gap_low[gap_start+num_gaps] = f_high             # <<<<<<<<<<<<<<
@@ -53919,7 +54836,7 @@ 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":1569
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1619
  *                 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             # <<<<<<<<<<<<<<
@@ -53928,7 +54845,7 @@ 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":1570
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1620
  *                     f_gap_low[gap_start+num_gaps] = f_high
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1             # <<<<<<<<<<<<<<
@@ -53937,7 +54854,7 @@ 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":1571
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1621
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53946,7 +54863,7 @@ 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":1572
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1622
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53956,7 +54873,7 @@ 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":1573
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1623
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53968,7 +54885,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L43:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1574
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1624
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53977,7 +54894,7 @@ 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":1575
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1625
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:             # <<<<<<<<<<<<<<
@@ -53993,7 +54910,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1626
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -54002,7 +54919,7 @@ 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":1577
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1627
  *                         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"             # <<<<<<<<<<<<<<
@@ -54022,7 +54939,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1629
  *                             reason_for_failure = "Inside edges of following subphrase are not tight"
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -54037,7 +54954,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1580
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1630
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:
  *                         met_constraints = 0             # <<<<<<<<<<<<<<
@@ -54051,7 +54968,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1632
  *                         met_constraints = 0
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -54061,7 +54978,7 @@ 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":1583
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1633
  * 
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low             # <<<<<<<<<<<<<<
@@ -54070,7 +54987,7 @@ 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":1584
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1634
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low
  *                     for i from 0 <= i < num_gaps: # check integrity of subphrases             # <<<<<<<<<<<<<<
@@ -54080,17 +54997,17 @@ 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":1585
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1635
  *                     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 = 1585; __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 = 1635; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
  *                                             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,             # <<<<<<<<<<<<<<
@@ -54101,7 +55018,7 @@ 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":1592
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0) == 0:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -54110,18 +55027,18 @@ 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":1593
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1643
  *                                             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 = 1593; __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 = 1643; __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 = 1593; __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 = 1643; __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 = 1593; __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 = 1643; __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);
@@ -54129,14 +55046,14 @@ 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 = 1593; __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 = 1643; __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":1594
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1644
  *                             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             # <<<<<<<<<<<<<<
@@ -54153,7 +55070,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L47:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1596
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1646
  *                             break
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -54163,7 +55080,7 @@ 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":1597
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
  * 
  *                 if gap_error == 0:
  *                     i = 1             # <<<<<<<<<<<<<<
@@ -54172,21 +55089,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_i = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1648
  *                 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 = 1598; __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 = 1648; __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 = 1598; __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 = 1648; __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":1599
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1649
  *                     i = 1
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -54196,7 +55113,7 @@ 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":1600
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54205,7 +55122,7 @@ 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":1601
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1651
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         i = i+1             # <<<<<<<<<<<<<<
@@ -54214,16 +55131,16 @@ 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":1602
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1652
  *                         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 = 1602; __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 = 1652; __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 = 1602; __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 = 1652; __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;
@@ -54231,27 +55148,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L52:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1653
  *                         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 = 1603; __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 = 1653; __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 = 1603; __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 = 1653; __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 = 1603; __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 = 1653; __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":1604
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
  *                         self.findexes.append(sym_setindex(self.category, i))
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54261,7 +55178,7 @@ 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":1605
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1655
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -54271,7 +55188,7 @@ 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":1606
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54280,7 +55197,7 @@ 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":1607
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1657
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))
  *                             i = i + 1             # <<<<<<<<<<<<<<
@@ -54292,7 +55209,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1609
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1659
  *                             i = i + 1
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -54304,7 +55221,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_L55:;
         }
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1660
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -54314,7 +55231,7 @@ 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":1611
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1661
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54323,16 +55240,16 @@ 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":1612
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1662
  *                     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 = 1612; __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 = 1662; __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 = 1612; __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 = 1662; __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;
@@ -54340,25 +55257,25 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L56:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1664
  *                         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 = 1614; __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 = 1664; __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 = 1614; __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 = 1664; __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":1615
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1665
  * 
  *                     fphr = Phrase(fphr_arr)
  *                     if met_constraints:             # <<<<<<<<<<<<<<
@@ -54367,47 +55284,47 @@ 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":1618
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
  *                         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 = 1616; __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 = 1666; __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":1619
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
  *                                             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 = 1619; __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 = 1669; __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":1620
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1670
  *                                             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 = 1620; __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 = 1670; __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 = 1620; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1670; __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":1622
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
  *                             pair_count = 1.0 / len(phrase_list)
  *                         else:
  *                             pair_count = 0             # <<<<<<<<<<<<<<
@@ -54416,22 +55333,22 @@ 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":1623
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1673
  *                         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 = 1623; __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 = 1673; __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 = 1623; __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 = 1673; __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 = 1623; __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 = 1673; __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 = 1623; __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 = 1673; __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 = 1623; __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 = 1673; __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);
@@ -54445,7 +55362,7 @@ 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 = 1623; __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 = 1673; __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);
@@ -54454,7 +55371,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L58:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1624
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1674
  *                             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:             # <<<<<<<<<<<<<<
@@ -54465,7 +55382,7 @@ 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 = 1624; __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 = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_14);
             __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
           }
@@ -54473,23 +55390,23 @@ 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 = 1624; __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 = 1674; __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 = 1624; __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 = 1674; __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 = 1624; __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 = 1674; __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 = 1624; __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 = 1674; __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 = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 break;
               }
@@ -54505,7 +55422,7 @@ 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 = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               #if CYTHON_COMPILING_IN_CPYTHON
               if (likely(PyTuple_CheckExact(sequence))) {
@@ -54518,14 +55435,14 @@ 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 = 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;}
+              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __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 = 1674; __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 = 1624; __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 = 1674; __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;
@@ -54533,7 +55450,7 @@ 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 = 1624; __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 = 1674; __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;
@@ -54541,7 +55458,7 @@ 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 = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_L62_unpacking_done:;
             }
             __Pyx_XDECREF(__pyx_v_phrase2);
@@ -54551,7 +55468,7 @@ 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":1625
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1675
  *                             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)             # <<<<<<<<<<<<<<
@@ -54560,31 +55477,31 @@ 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 = 1625; __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 = 1675; __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":1626
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1676
  *                         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 = 1626; __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 = 1676; __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 = 1626; __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 = 1676; __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 = 1626; __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 = 1676; __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 = 1626; __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 = 1676; __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));
@@ -54598,7 +55515,7 @@ 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 = 1626; __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 = 1676; __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;
@@ -54608,7 +55525,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L57:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1628
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1678
  *                             extracts.append((fphr, phrase2, pair_count, tuple(als1)))
  * 
  *                     if (num_gaps < self.max_nonterminals and             # <<<<<<<<<<<<<<
@@ -54618,7 +55535,7 @@ 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":1629
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1679
  * 
  *                     if (num_gaps < self.max_nonterminals and
  *                         phrase_len < self.max_length and             # <<<<<<<<<<<<<<
@@ -54628,7 +55545,7 @@ 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":1630
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1680
  *                     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):             # <<<<<<<<<<<<<<
@@ -54646,7 +55563,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_7) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1631
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
  *                         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             # <<<<<<<<<<<<<<
@@ -54656,7 +55573,7 @@ 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":1632
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1682
  *                         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             # <<<<<<<<<<<<<<
@@ -54666,7 +55583,7 @@ 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":1633
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1683
  *                         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))):             # <<<<<<<<<<<<<<
@@ -54696,7 +55613,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1634
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1684
  *                                 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             # <<<<<<<<<<<<<<
@@ -54705,7 +55622,7 @@ 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":1635
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1685
  *                                 ((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             # <<<<<<<<<<<<<<
@@ -54714,7 +55631,7 @@ 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":1636
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1686
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -54723,7 +55640,7 @@ 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":1637
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:             # <<<<<<<<<<<<<<
@@ -54740,7 +55657,7 @@ 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":1638
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1688
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -54753,7 +55670,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L65:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1639
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1689
  *                                 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:             # <<<<<<<<<<<<<<
@@ -54769,7 +55686,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1690
  *                                     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             # <<<<<<<<<<<<<<
@@ -54781,7 +55698,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L68:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -54790,17 +55707,17 @@ 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":1643
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
  * 
  *                             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 = 1643; __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 = 1693; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1697
  *                                             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,             # <<<<<<<<<<<<<<
@@ -54810,7 +55727,7 @@ 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":1649
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1699
  *                                             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             # <<<<<<<<<<<<<<
@@ -54826,17 +55743,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
  *                                             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 = 1650; __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 = 1700; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_1);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1704
  *                                             -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,             # <<<<<<<<<<<<<<
@@ -54859,7 +55776,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1706
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -54868,7 +55785,7 @@ 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":1657
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1707
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -54877,35 +55794,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1658
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
  *                                 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 = 1658; __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 = 1708; __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 = 1658; __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 = 1708; __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":1659
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1709
  *                                 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 = 1659; __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 = 1709; __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 = 1659; __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 = 1709; __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":1660
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54914,7 +55831,7 @@ 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":1661
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1711
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -54923,27 +55840,27 @@ 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":1662
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
  *                                 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 = 1662; __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 = 1712; __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 = 1662; __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 = 1712; __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 = 1662; __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 = 1712; __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":1663
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1713
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54953,7 +55870,7 @@ 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":1664
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1714
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -54963,7 +55880,7 @@ 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":1665
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1715
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54972,7 +55889,7 @@ 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":1666
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1716
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -54984,7 +55901,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1718
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -54996,7 +55913,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L72:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1719
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -55006,7 +55923,7 @@ 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":1670
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1720
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55015,16 +55932,16 @@ 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":1671
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1721
  *                                 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 = 1671; __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 = 1721; __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 = 1671; __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 = 1721; __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;
@@ -55032,67 +55949,67 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L73:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1722
  *                                     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 = 1672; __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 = 1722; __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 = 1672; __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 = 1722; __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":1675
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1725
  *                                 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 = 1673; __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 = 1723; __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":1676
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1726
  *                                                     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 = 1676; __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 = 1726; __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":1677
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1727
  *                                                     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 = 1677; __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 = 1727; __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 = 1677; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1727; __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":1679
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1729
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55103,7 +56020,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L74:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1680
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1730
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55114,7 +56031,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                 __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 = 1680; __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __pyx_t_16 = Py_TYPE(__pyx_t_15)->tp_iternext;
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@@ -55122,23 +56039,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                   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 = 1680; __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  __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;}
+                  __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_15)) break;
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-                  __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;}
+                  __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 = 1730; __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 = 1680; __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   __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 = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                     break;
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@@ -55154,7 +56071,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -55167,14 +56084,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                   __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 = 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;}
+                  __pyx_t_14 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   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 = 1680; __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 = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -55182,7 +56099,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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-                  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;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
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@@ -55190,7 +56107,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -55200,7 +56117,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1731
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:
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@@ -55209,31 +56126,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                 __pyx_t_1 = ((PyObject *)__pyx_v_self->findexes);
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-                __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_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 = 1731; __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":1682
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1732
  *                                 for phrase2,eindexes in phrase_list:
  *                                     als2 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
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-                __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_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                __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_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 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 = 1682; __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 = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
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-                __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_t_1 = PyTuple_New(4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __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));
@@ -55247,7 +56164,7 @@ 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 = 1682; __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 = 1732; __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;
@@ -55260,7 +56177,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L64:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1684
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als2)))
  * 
  *                         if (f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -55270,7 +56187,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1685
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1735
  * 
  *                         if (f_back_high == f_high and
  *                             f_sent_len - f_high >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55280,7 +56197,7 @@ 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":1686
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1736
  *                         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))):             # <<<<<<<<<<<<<<
@@ -55310,7 +56227,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
  *                             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             # <<<<<<<<<<<<<<
@@ -55319,7 +56236,7 @@ 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":1688
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1738
  *                             ((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             # <<<<<<<<<<<<<<
@@ -55328,7 +56245,7 @@ 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":1689
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1739
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -55337,7 +56254,7 @@ 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":1690
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1740
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -55354,7 +56271,7 @@ 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":1691
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1741
  *                             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             # <<<<<<<<<<<<<<
@@ -55367,7 +56284,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L80:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1742
  *                                 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:             # <<<<<<<<<<<<<<
@@ -55383,7 +56300,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1743
  *                                     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             # <<<<<<<<<<<<<<
@@ -55395,7 +56312,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L83:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1695
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1745
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -55404,17 +56321,17 @@ 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":1696
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1746
  * 
  *                             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 = 1696; __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 = 1746; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1750
  *                                             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,             # <<<<<<<<<<<<<<
@@ -55424,7 +56341,7 @@ 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":1702
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1752
  *                                             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             # <<<<<<<<<<<<<<
@@ -55440,17 +56357,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1703
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1753
  *                                             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 = 1703; __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 = 1753; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_14);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1758
  *                                             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,             # <<<<<<<<<<<<<<
@@ -55473,7 +56390,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1760
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -55482,7 +56399,7 @@ 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":1711
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -55491,21 +56408,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1762
  *                                 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 = 1712; __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 = 1762; __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 = 1712; __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 = 1762; __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":1713
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1763
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -55515,7 +56432,7 @@ 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":1714
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1764
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55524,7 +56441,7 @@ 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":1715
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1765
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     i = i+1             # <<<<<<<<<<<<<<
@@ -55533,16 +56450,16 @@ 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":1716
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
  *                                     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 = 1716; __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 = 1766; __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 = 1716; __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 = 1766; __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;
@@ -55550,27 +56467,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L85:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1717
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1767
  *                                     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 = 1717; __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 = 1767; __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 = 1717; __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 = 1767; __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 = 1717; __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 = 1767; __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":1718
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1768
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -55580,7 +56497,7 @@ 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":1719
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -55590,7 +56507,7 @@ 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":1720
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1770
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55599,7 +56516,7 @@ 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":1721
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1771
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -55611,7 +56528,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1723
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -55623,7 +56540,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L88:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1724
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1774
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55632,81 +56549,81 @@ 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":1725
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1775
  *                                         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 = 1725; __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 = 1775; __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 = 1725; __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 = 1775; __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":1726
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1776
  *                                 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 = 1726; __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 = 1776; __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 = 1726; __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 = 1776; __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":1729
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1779
  *                                 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 = 1727; __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 = 1777; __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":1730
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
  *                                                     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 = 1730; __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 = 1780; __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":1731
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1781
  *                                                     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 = 1731; __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 = 1781; __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 = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1781; __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":1733
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1783
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55717,7 +56634,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L89:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55728,7 +56645,7 @@ 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 = 1734; __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 = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __pyx_t_16 = Py_TYPE(__pyx_t_1)->tp_iternext;
               }
@@ -55736,23 +56653,23 @@ 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 = 1734; __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 = 1784; __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 = 1734; __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 = 1784; __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 = 1734; __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 = 1784; __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 = 1734; __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 = 1784; __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 = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -55768,7 +56685,7 @@ 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 = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -55781,14 +56698,14 @@ 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 = 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;}
+                  __pyx_t_15 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_15)) {__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;}
                   #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 = 1734; __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 = 1784; __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;
@@ -55796,7 +56713,7 @@ 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 = 1734; __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 = 1784; __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;
@@ -55804,7 +56721,7 @@ 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 = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L93_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -55814,7 +56731,7 @@ 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":1735
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1785
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -55823,31 +56740,31 @@ 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 = 1735; __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 = 1785; __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":1736
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1786
  *                                 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 = 1736; __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 = 1786; __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 = 1736; __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 = 1786; __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 = 1736; __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 = 1786; __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 = 1736; __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 = 1786; __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));
@@ -55861,7 +56778,7 @@ 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 = 1736; __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 = 1786; __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;
@@ -55874,7 +56791,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L79:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1787
  *                                     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             # <<<<<<<<<<<<<<
@@ -55884,7 +56801,7 @@ 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":1738
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1788
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and             # <<<<<<<<<<<<<<
@@ -55894,7 +56811,7 @@ 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":1739
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1789
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -55904,7 +56821,7 @@ 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":1740
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1790
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and
  *                             f_back_low == f_low and             # <<<<<<<<<<<<<<
@@ -55914,7 +56831,7 @@ 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":1741
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1791
  *                             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             # <<<<<<<<<<<<<<
@@ -55924,7 +56841,7 @@ 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":1742
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1792
  *                             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             # <<<<<<<<<<<<<<
@@ -55934,7 +56851,7 @@ 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":1743
+                      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1793
  *                             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             # <<<<<<<<<<<<<<
@@ -55944,7 +56861,7 @@ 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":1744
+                        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
  *                             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))):             # <<<<<<<<<<<<<<
@@ -55994,7 +56911,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1746
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1796
  *                             ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_high] != -1))):
  * 
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -56003,7 +56920,7 @@ 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":1747
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1797
  * 
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -56012,7 +56929,7 @@ 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":1748
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1798
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -56021,7 +56938,7 @@ 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":1749
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1799
  *                             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:             # <<<<<<<<<<<<<<
@@ -56038,7 +56955,7 @@ 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":1750
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1800
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -56051,7 +56968,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L95:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1751
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1801
  *                                 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:             # <<<<<<<<<<<<<<
@@ -56061,7 +56978,7 @@ 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":1752
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1802
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -56073,7 +56990,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L98:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1754
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1804
  *                                 met_constraints = 0
  * 
  *                             f_x_high = f_high+self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -56082,7 +56999,7 @@ 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":1755
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
  * 
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -56091,7 +57008,7 @@ 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":1756
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1806
  *                             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:             # <<<<<<<<<<<<<<
@@ -56108,7 +57025,7 @@ 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":1757
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1807
  *                             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             # <<<<<<<<<<<<<<
@@ -56121,7 +57038,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L99:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1758
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1808
  *                                 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:             # <<<<<<<<<<<<<<
@@ -56137,7 +57054,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1759
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1809
  *                                     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             # <<<<<<<<<<<<<<
@@ -56149,7 +57066,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L102:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1811
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -56158,17 +57075,17 @@ 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":1762
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1812
  * 
  *                             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 = 1762; __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 = 1812; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1816
  *                                                 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,             # <<<<<<<<<<<<<<
@@ -56178,7 +57095,7 @@ 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":1768
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1818
  *                                                 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             # <<<<<<<<<<<<<<
@@ -56200,17 +57117,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_7) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1819
  *                                                 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 = 1769; __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 = 1819; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_15);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1823
  *                                                 -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,             # <<<<<<<<<<<<<<
@@ -56221,17 +57138,17 @@ 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":1775
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1825
  *                                                 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 = 1775; __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 = 1825; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     __Pyx_GOTREF(__pyx_t_15);
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1830
  *                                                 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,             # <<<<<<<<<<<<<<
@@ -56259,7 +57176,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1782
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1832
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -56268,7 +57185,7 @@ 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":1783
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1833
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -56277,35 +57194,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1834
  *                                 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 = 1784; __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 = 1834; __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 = 1784; __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 = 1834; __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":1785
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1835
  *                                 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 = 1785; __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 = 1835; __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 = 1785; __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 = 1835; __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":1786
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1836
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56314,7 +57231,7 @@ 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":1787
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1837
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -56323,27 +57240,27 @@ 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":1788
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1838
  *                                 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 = 1788; __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 = 1838; __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 = 1788; __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 = 1838; __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 = 1788; __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 = 1838; __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":1789
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1839
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -56353,7 +57270,7 @@ 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":1790
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1840
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -56363,7 +57280,7 @@ 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":1791
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1841
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56372,7 +57289,7 @@ 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":1792
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1842
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -56384,7 +57301,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1844
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -56396,7 +57313,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L106:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1795
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1845
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56405,81 +57322,81 @@ 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":1796
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1846
  *                                         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 = 1796; __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 = 1846; __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 = 1796; __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 = 1846; __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":1797
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1847
  *                                 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 = 1797; __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 = 1847; __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 = 1797; __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 = 1847; __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":1800
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1850
  *                                 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 = 1798; __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 = 1848; __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":1801
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1851
  *                                                     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 = 1801; __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 = 1851; __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":1802
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1852
  *                                                     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 = 1802; __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 = 1852; __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 = 1802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1852; __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":1804
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1854
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -56490,7 +57407,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L107:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1855
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -56501,7 +57418,7 @@ 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 = 1805; __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 = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
               }
@@ -56509,23 +57426,23 @@ 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 = 1805; __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 = 1855; __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 = 1805; __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 = 1855; __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 = 1805; __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 = 1855; __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 = 1805; __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 = 1855; __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 = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -56541,7 +57458,7 @@ 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 = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -56554,14 +57471,14 @@ 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 = 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;}
+                  __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __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 = 1855; __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 = 1805; __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 = 1855; __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;
@@ -56569,7 +57486,7 @@ 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 = 1805; __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 = 1855; __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;
@@ -56577,7 +57494,7 @@ 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 = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L111_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -56587,7 +57504,7 @@ 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":1806
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1856
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als4 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -56596,31 +57513,31 @@ 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 = 1806; __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 = 1856; __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":1807
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1857
  *                                 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 = 1807; __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 = 1857; __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 = 1807; __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 = 1857; __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 = 1807; __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 = 1857; __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 = 1807; __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 = 1857; __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));
@@ -56634,7 +57551,7 @@ 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 = 1807; __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 = 1857; __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;
@@ -56656,7 +57573,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1809
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1859
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als4)))
  *             else:
  *                 reason_for_failure = "Unable to extract basic phrase"             # <<<<<<<<<<<<<<
@@ -56672,7 +57589,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L33:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1811
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
  *                 reason_for_failure = "Unable to extract basic phrase"
  * 
  *         free(sent_links)             # <<<<<<<<<<<<<<
@@ -56681,7 +57598,7 @@ 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":1812
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1862
  * 
  *         free(sent_links)
  *         free(f_links_low)             # <<<<<<<<<<<<<<
@@ -56690,7 +57607,7 @@ 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":1813
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1863
  *         free(sent_links)
  *         free(f_links_low)
  *         free(f_links_high)             # <<<<<<<<<<<<<<
@@ -56699,7 +57616,7 @@ 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":1814
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1864
  *         free(f_links_low)
  *         free(f_links_high)
  *         free(e_links_low)             # <<<<<<<<<<<<<<
@@ -56708,7 +57625,7 @@ 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":1815
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1865
  *         free(f_links_high)
  *         free(e_links_low)
  *         free(e_links_high)             # <<<<<<<<<<<<<<
@@ -56717,7 +57634,7 @@ 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":1816
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1866
  *         free(e_links_low)
  *         free(e_links_high)
  *         free(f_gap_low)             # <<<<<<<<<<<<<<
@@ -56726,7 +57643,7 @@ 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":1817
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1867
  *         free(e_links_high)
  *         free(f_gap_low)
  *         free(f_gap_high)             # <<<<<<<<<<<<<<
@@ -56735,7 +57652,7 @@ 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":1818
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1868
  *         free(f_gap_low)
  *         free(f_gap_high)
  *         free(e_gap_low)             # <<<<<<<<<<<<<<
@@ -56744,7 +57661,7 @@ 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":1819
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1869
  *         free(f_gap_high)
  *         free(e_gap_low)
  *         free(e_gap_high)             # <<<<<<<<<<<<<<
@@ -56753,7 +57670,7 @@ 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":1821
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1871
  *         free(e_gap_high)
  * 
  *         return extracts             # <<<<<<<<<<<<<<
@@ -56825,16 +57742,16 @@ 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 = 1829; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
         case  2:
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1879
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1884
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1886
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+      __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __pyx_t_12 = Py_TYPE(__pyx_t_2)->tp_iternext;
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@@ -57729,23 +58646,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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-        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57755,21 +58672,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
       __pyx_v_link = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1905
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1957
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  *                 for link in al[f_j]:
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-      if (unlikely(!__pyx_cur_scope->__pyx_v_e_nt_cover)) { __Pyx_RaiseClosureNameError("e_nt_cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
-      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_e_nt_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (unlikely(!__pyx_cur_scope->__pyx_v_e_nt_cover)) { __Pyx_RaiseClosureNameError("e_nt_cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_e_nt_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1906
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1958
  *                 for link in al[f_j]:
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@@ -57783,7 +58700,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
     }
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1909
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1961
  *                 # Non-terminal collisions block word extraction and extension, but
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-      __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 = 1909; __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 = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_4 = PyObject_RichCompare(__pyx_v_wc, __pyx_t_2, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_RichCompare(__pyx_v_wc, __pyx_t_2, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57804,32 +58721,32 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
     }
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1910
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1962
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-      __pyx_t_4 = PyList_New(0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_New(0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __pyx_v_plus_links = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1911
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1963
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  *                     for link in al[f_j]:             # <<<<<<<<<<<<<<
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-      __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 = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __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 = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57838,23 +58755,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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           if (__pyx_t_7 >= PyList_GET_SIZE(__pyx_t_2)) break;
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+          __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #else
-          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           #if CYTHON_COMPILING_IN_CPYTHON
-          __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57864,14 +58781,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
         __pyx_v_link = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1912
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1964
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  *                     for link in al[f_j]:
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-        __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1912; __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 = 1964; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57879,10 +58796,10 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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+        __pyx_t_13 = PyList_Append(__pyx_v_plus_links, ((PyObject *)__pyx_t_4)); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1964; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1913
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1965
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         __pyx_t_4 = __pyx_v_link;
-        if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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+        if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1965; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+        __pyx_t_8 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_t_4); if (!__pyx_t_8) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_t_8, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_t_8, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_t_4, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (unlikely(!__pyx_cur_scope->__pyx_v_cover)) { __Pyx_RaiseClosureNameError("cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1965; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+        if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_cover, __pyx_t_4, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1965; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1914
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1966
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  *                         cover[link] += 1
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+        __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1968; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1917
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1936
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1956
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1959
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1838
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1997
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1998
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2002
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2071
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+    __pyx_t_8 = PyObject_Call(((PyObject *)((PyObject*)(&PyString_Type))), ((PyObject *)__pyx_t_7), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_7 = PyNumber_Add(__pyx_t_5, __pyx_t_8); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_7 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_8), NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -62796,24 +63864,24 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(str
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2072
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2129
  *         for w in self.bilex_e:
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  *         logger.info('fe')             # <<<<<<<<<<<<<<
  *         for w in self.bilex_fe:
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-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2072; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_7 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2072; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_7 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__info); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_k_tuple_147), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2073
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2130
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  *         logger.info('fe')
  *         for w in self.bilex_fe:             # <<<<<<<<<<<<<<
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+    __pyx_t_3 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_self->bilex_fe); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_7); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_3); __Pyx_INCREF(__pyx_t_7); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2074
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+    __pyx_t_7 = PyObject_GetItem(__pyx_v_self->bilex_fe, __pyx_v_w); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_9 = -1; __pyx_t_8 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2074; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_9 = -1; __pyx_t_8 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2075
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+      __pyx_t_11 = PyNumber_Add(__pyx_t_7, __pyx_t_5); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_11);
       __Pyx_GIVEREF(__pyx_t_11);
       __pyx_t_11 = 0;
-      __pyx_t_11 = PyObject_Call(__pyx_t_2, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2075; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -62966,24 +64034,24 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(str
   }
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2076
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2133
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+  __pyx_t_1 = PyObject_Call(__pyx_t_8, ((PyObject *)__pyx_k_tuple_148), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2077
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2134
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@@ -63002,23 +64070,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(str
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+      __pyx_t_8 = PySequence_ITEM(__pyx_t_1, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2077; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2078
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2099
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2105
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+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *__pyx_cur_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)__pyx_generator->closure);
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-  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)__pyx_ptype_3_sa___pyx_scope_struct_29_genexpr->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_29_genexpr, __pyx_empty_tuple, NULL);
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+    __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;}
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 }
 
-static PyObject *__pyx_gb_3_sa_13FeatureVector_7__str___2generator16(__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 */
 {
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+    __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_154), __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;}
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 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_26___str__ *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)__pyx_ptype_3_sa___pyx_scope_struct_28___str__->tp_new(__pyx_ptype_3_sa___pyx_scope_struct_28___str__, __pyx_empty_tuple, NULL);
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   p->findexes1 = ((struct __pyx_obj_3_sa_IntList *)Py_None); Py_INCREF(Py_None);
+  p->samples_f = 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);
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   Py_CLEAR(p->fid2symid);
   Py_CLEAR(p->findexes);
   Py_CLEAR(p->findexes1);
+  Py_CLEAR(p->samples_f);
   Py_CLEAR(p->phrases_f);
   Py_CLEAR(p->phrases_e);
   Py_CLEAR(p->phrases_fe);
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   if (p->findexes1) {
     e = (*v)(((PyObject*)p->findexes1), a); if (e) return e;
   }
+  if (p->samples_f) {
+    e = (*v)(p->samples_f, a); if (e) return e;
+  }
   if (p->phrases_f) {
     e = (*v)(p->phrases_f, a); if (e) return e;
   }
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   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->samples_f);
+  p->samples_f = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->phrases_f);
   p->phrases_f = Py_None; Py_INCREF(Py_None);
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   {__Pyx_NAMESTR("dump_online_stats"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_32dump_online_stats, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("dump_online_rules"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_34dump_online_rules, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("online_ctx_lookup"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_36online_ctx_lookup, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("get_f_phrases"), (PyCFunction)__pyx_pw_3_sa_23HieroCachingRuleFactory_38get_f_phrases, METH_O, __Pyx_DOCSTR(0)},
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@@ -74168,15 +76398,19 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_19_input(PyTypeObject *t,
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   p->__pyx_v_extracts = 0;
   p->__pyx_v_f = 0;
+  p->__pyx_v_f_syms = 0;
   p->__pyx_v_fcount = 0;
   p->__pyx_v_fphrases = 0;
   p->__pyx_v_frontier = 0;
   p->__pyx_v_frontier_nodes = 0;
   p->__pyx_v_fwords = 0;
+  p->__pyx_v_genexpr = 0;
   p->__pyx_v_hiero_phrase = 0;
   p->__pyx_v_input_match = 0;
   p->__pyx_v_is_shadow_path = 0;
   p->__pyx_v_key = 0;
+  p->__pyx_v_lex_i = 0;
+  p->__pyx_v_lex_j = 0;
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   p->__pyx_v_locs = 0;
   p->__pyx_v_max_locs = 0;
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   p->__pyx_v_sample = 0;
   p->__pyx_v_scores = 0;
+  p->__pyx_v_seen_phrases = 0;
   p->__pyx_v_self = 0;
   p->__pyx_v_spanlen = 0;
   p->__pyx_v_stop_time = 0;
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   Py_CLEAR(p->__pyx_v_extract_stop);
   Py_CLEAR(p->__pyx_v_extracts);
   Py_CLEAR(p->__pyx_v_f);
+  Py_CLEAR(p->__pyx_v_f_syms);
   Py_CLEAR(p->__pyx_v_fcount);
   Py_CLEAR(p->__pyx_v_fphrases);
   Py_CLEAR(p->__pyx_v_frontier);
   Py_CLEAR(p->__pyx_v_frontier_nodes);
   Py_CLEAR(p->__pyx_v_fwords);
+  Py_CLEAR(p->__pyx_v_genexpr);
   Py_CLEAR(p->__pyx_v_hiero_phrase);
   Py_CLEAR(p->__pyx_v_input_match);
   Py_CLEAR(p->__pyx_v_is_shadow_path);
   Py_CLEAR(p->__pyx_v_key);
+  Py_CLEAR(p->__pyx_v_lex_i);
+  Py_CLEAR(p->__pyx_v_lex_j);
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   Py_CLEAR(p->__pyx_v_locs);
   Py_CLEAR(p->__pyx_v_max_locs);
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   Py_CLEAR(p->__pyx_v_sa_range);
   Py_CLEAR(p->__pyx_v_sample);
   Py_CLEAR(p->__pyx_v_scores);
+  Py_CLEAR(p->__pyx_v_seen_phrases);
   Py_CLEAR(p->__pyx_v_self);
   Py_CLEAR(p->__pyx_v_spanlen);
   Py_CLEAR(p->__pyx_v_stop_time);
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   if (p->__pyx_v_f) {
     e = (*v)(p->__pyx_v_f, a); if (e) return e;
   }
+  if (p->__pyx_v_f_syms) {
+    e = (*v)(p->__pyx_v_f_syms, a); if (e) return e;
+  }
   if (p->__pyx_v_fcount) {
     e = (*v)(p->__pyx_v_fcount, a); if (e) return e;
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@@ -74318,6 +76561,9 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_19_input(PyObject *o, visit
   if (p->__pyx_v_fwords) {
     e = (*v)(p->__pyx_v_fwords, a); if (e) return e;
   }
+  if (p->__pyx_v_genexpr) {
+    e = (*v)(p->__pyx_v_genexpr, a); if (e) return e;
+  }
   if (p->__pyx_v_hiero_phrase) {
     e = (*v)(((PyObject*)p->__pyx_v_hiero_phrase), a); if (e) return e;
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   if (p->__pyx_v_key) {
     e = (*v)(p->__pyx_v_key, a); if (e) return e;
   }
+  if (p->__pyx_v_lex_i) {
+    e = (*v)(p->__pyx_v_lex_i, a); if (e) return e;
+  }
+  if (p->__pyx_v_lex_j) {
+    e = (*v)(p->__pyx_v_lex_j, a); if (e) return e;
+  }
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     e = (*v)(p->__pyx_v_loc, a); if (e) return e;
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@@ -74381,6 +76633,9 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_19_input(PyObject *o, visit
   if (p->__pyx_v_scores) {
     e = (*v)(((PyObject*)p->__pyx_v_scores), a); if (e) return e;
   }
+  if (p->__pyx_v_seen_phrases) {
+    e = (*v)(p->__pyx_v_seen_phrases, a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
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   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_syms);
+  p->__pyx_v_f_syms = ((PyObject*)Py_None); Py_INCREF(Py_None);
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   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_genexpr);
+  p->__pyx_v_genexpr = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_hiero_phrase);
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+  tmp = ((PyObject*)p->__pyx_v_seen_phrases);
+  p->__pyx_v_seen_phrases = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
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+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_word = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_word);
+  Py_CLEAR(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_word) {
+    e = (*v)(p->__pyx_v_word, 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_20_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_19_input *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_word);
+  p->__pyx_v_word = 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_20_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_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_20_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_20_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_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_20_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_20_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_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_20_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_20_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_20_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_20_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_20_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_20_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_20_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_20_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_21_add_instance(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o);
   p->__pyx_v_al = 0;
   p->__pyx_v_cover = 0;
   p->__pyx_v_e_nt_cover = 0;
@@ -74753,8 +77230,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance(PyTypeObje
   return 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;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   Py_CLEAR(p->__pyx_v_al);
   Py_CLEAR(p->__pyx_v_cover);
   Py_CLEAR(p->__pyx_v_e_nt_cover);
@@ -74769,9 +77246,9 @@ static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance(PyObject *o
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_add_instance(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   if (p->__pyx_v_al) {
     e = (*v)(p->__pyx_v_al, a); if (e) return e;
   }
@@ -74808,8 +77285,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance(PyObject *o
   return 0;
 }
 
-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;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_al);
   p->__pyx_v_al = Py_None; Py_INCREF(Py_None);
@@ -74847,11 +77324,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_20_add_instance[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21_add_instance[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_add_instance = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_add_instance = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -74909,7 +77386,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_add_instance = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_add_instance = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -74922,13 +77399,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_add_instance
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20_add_instance = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21_add_instance = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_add_instance = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_add_instance = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -74949,12 +77426,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_add_instance = {
   PyVarObject_HEAD_INIT(0, 0)
-  __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*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21_add_instance"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_add_instance, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -74964,24 +77441,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__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*/
+  &__pyx_tp_as_number___pyx_scope_struct_21_add_instance, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_21_add_instance, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_21_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_add_instance, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_21_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_add_instance, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_21_add_instance, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_21_add_instance, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_20_add_instance, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_21_add_instance, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -74991,7 +77468,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_21_add_instance, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75005,26 +77482,26 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_21_form_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_form_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o);
   p->__pyx_v_links = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_form_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   Py_CLEAR(p->__pyx_v_links);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_form_rule(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_form_rule(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   if (p->__pyx_v_links) {
     e = (*v)(p->__pyx_v_links, a); if (e) return e;
   }
@@ -75034,8 +77511,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_form_rule(PyObject *o, v
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_form_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_links);
   p->__pyx_v_links = Py_None; Py_INCREF(Py_None);
@@ -75046,11 +77523,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21_form_rule[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_22_form_rule[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_form_rule = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_form_rule = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75108,7 +77585,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_form_rule = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_form_rule = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75121,13 +77598,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_form_rule =
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21_form_rule = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_22_form_rule = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_form_rule = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22_form_rule = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75148,12 +77625,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_form_rule = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21_form_rule"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_22_form_rule"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_form_rule, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_form_rule, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75163,24 +77640,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_21_form_rule, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_21_form_rule, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_21_form_rule, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_22_form_rule, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_22_form_rule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_22_form_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_form_rule, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_22_form_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_form_rule, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_22_form_rule, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_22_form_rule, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_21_form_rule, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_22_form_rule, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75190,7 +77667,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_21_form_rule, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_22_form_rule, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75204,11 +77681,11 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p;
+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_22_genexpr *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_i = 0;
   p->__pyx_v_j = 0;
@@ -75216,8 +77693,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t
   return o;
 }
 
-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;
+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_i);
   Py_CLEAR(p->__pyx_v_j);
@@ -75225,9 +77702,9 @@ static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr(PyObject *o, visitproc v, void *a) {
+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_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
+  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;
   }
@@ -75243,11 +77720,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr(PyObject *o, vis
   return 0;
 }
 
-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;
+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_form_rule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_i);
   p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
@@ -75261,11 +77738,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_22_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_23_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75323,7 +77800,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75336,13 +77813,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_22_genexpr = {
+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_22_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75363,12 +77840,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_22_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr), /*tp_basicsize*/
+  __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_22_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75378,24 +77855,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_22_genexpr, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_22_genexpr, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_22_genexpr, /*tp_as_mapping*/
+  &__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_22_genexpr, /*tp_as_buffer*/
+  &__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_22_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr, /*tp_clear*/
+  __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_22_genexpr, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_23_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75405,7 +77882,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_23_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75419,26 +77896,26 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_23_fmt_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_24_fmt_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o);
   p->__pyx_v_a = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   Py_CLEAR(p->__pyx_v_a);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   if (p->__pyx_v_a) {
     e = (*v)(p->__pyx_v_a, a); if (e) return e;
   }
@@ -75448,8 +77925,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o, vi
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_a);
   p->__pyx_v_a = Py_None; Py_INCREF(Py_None);
@@ -75460,11 +77937,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_23_fmt_rule[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_24_fmt_rule[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_fmt_rule = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_fmt_rule = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75522,7 +77999,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_fmt_rule = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_fmt_rule = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75535,13 +78012,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_23_fmt_rule = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_fmt_rule = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_fmt_rule = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_fmt_rule = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75562,12 +78039,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_fmt_rule = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_fmt_rule = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_23_fmt_rule"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_24_fmt_rule"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75577,24 +78054,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_23_fmt_rule, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_23_fmt_rule, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_24_fmt_rule, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_24_fmt_rule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_24_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_23_fmt_rule, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_24_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_23_fmt_rule, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75604,7 +78081,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75618,28 +78095,28 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   #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;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_25_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_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 = ((struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_packed = 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;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_25_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   Py_CLEAR(p->__pyx_outer_scope);
   Py_CLEAR(p->__pyx_v_packed);
   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) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_25_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;
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -75652,11 +78129,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr(PyObject *o, vis
   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;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_25_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_packed);
   p->__pyx_v_packed = Py_None; Py_INCREF(Py_None);
@@ -75667,11 +78144,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_24_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_25_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75729,7 +78206,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75742,13 +78219,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_genexpr = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_25_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75769,12 +78246,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25_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*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_25_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_25_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75784,24 +78261,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   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*/
+  &__pyx_tp_as_number___pyx_scope_struct_25_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_25_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_25_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*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_25_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*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_25_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_25_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*/
+  __pyx_methods_3_sa___pyx_scope_struct_25_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75811,7 +78288,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_24_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_25_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75825,32 +78302,255 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   #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;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_26_get_f_phrases(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *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 = ((struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o);
+  p->__pyx_v_extract = 0;
+  p->__pyx_v_f_len = 0;
+  p->__pyx_v_f_words = 0;
+  p->__pyx_v_phrases = 0;
   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;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_26_get_f_phrases(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  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_phrases);
   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) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_26_get_f_phrases(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;
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  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_phrases) {
+    e = (*v)(p->__pyx_v_phrases, 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_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;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_26_get_f_phrases(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  PyObject* 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_phrases);
+  p->__pyx_v_phrases = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  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_26_get_f_phrases[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26_get_f_phrases = {
+  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_get_f_phrases = {
+  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_get_f_phrases = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26_get_f_phrases = {
+  #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_get_f_phrases = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_26_get_f_phrases"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_26_get_f_phrases, /*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_get_f_phrases, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_26_get_f_phrases, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_26_get_f_phrases, /*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_get_f_phrases, /*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_get_f_phrases, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_26_get_f_phrases, /*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_get_f_phrases, /*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___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_27___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o;
+  Py_CLEAR(p->__pyx_v_self);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___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_27___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___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);
@@ -75858,11 +78558,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_25___iter__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_27___iter__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27___iter__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75920,7 +78620,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27___iter__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75933,13 +78633,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_25___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_27___iter__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27___iter__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75960,12 +78660,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27___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*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_27___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_25___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_27___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75975,24 +78675,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   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*/
+  &__pyx_tp_as_number___pyx_scope_struct_27___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_27___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_27___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*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_27___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*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_27___iter__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_27___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*/
+  __pyx_methods_3_sa___pyx_scope_struct_27___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76002,7 +78702,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_25___iter__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_27___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76016,32 +78716,32 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   #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;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_28___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___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 = ((struct __pyx_obj_3_sa___pyx_scope_struct_28___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;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_28___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___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) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_28___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;
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___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;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_28___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___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);
@@ -76049,11 +78749,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_26___str__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_28___str__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26___str__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_28___str__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -76111,7 +78811,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26___str__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26___str__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_28___str__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -76124,13 +78824,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26___str__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_26___str__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_28___str__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26___str__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_28___str__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -76151,12 +78851,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26___str__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_28___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*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_28___str__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_28___str__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_26___str__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_28___str__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -76166,24 +78866,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   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*/
+  &__pyx_tp_as_number___pyx_scope_struct_28___str__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_28___str__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_28___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*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_28___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*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_28___str__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_28___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*/
+  __pyx_methods_3_sa___pyx_scope_struct_28___str__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76193,7 +78893,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_26___str__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_28___str__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76207,28 +78907,28 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   #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;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_29_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_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 = ((struct __pyx_obj_3_sa___pyx_scope_struct_29_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;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_29_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_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) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_29_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;
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -76241,11 +78941,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr(PyObject *o, vis
   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;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_29_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_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);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_28___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);
@@ -76256,11 +78956,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_27_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_29_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_29_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -76318,7 +79018,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_29_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -76331,13 +79031,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_27_genexpr = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_29_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_29_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -76358,12 +79058,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_29_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*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_29_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_27_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_29_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -76373,24 +79073,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
   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*/
+  &__pyx_tp_as_number___pyx_scope_struct_29_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_29_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_29_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*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_29_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*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_29_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_29_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*/
+  __pyx_methods_3_sa___pyx_scope_struct_29_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76400,7 +79100,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_27_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_29_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76472,10 +79172,11 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_kp_s_14, __pyx_k_14, sizeof(__pyx_k_14), 0, 0, 1, 0},
   {&__pyx_kp_s_141, __pyx_k_141, sizeof(__pyx_k_141), 0, 0, 1, 0},
   {&__pyx_kp_s_145, __pyx_k_145, sizeof(__pyx_k_145), 0, 0, 1, 0},
-  {&__pyx_kp_s_151, __pyx_k_151, sizeof(__pyx_k_151), 0, 0, 1, 0},
+  {&__pyx_n_s_151, __pyx_k_151, sizeof(__pyx_k_151), 0, 0, 1, 1},
   {&__pyx_kp_s_154, __pyx_k_154, sizeof(__pyx_k_154), 0, 0, 1, 0},
-  {&__pyx_kp_s_155, __pyx_k_155, sizeof(__pyx_k_155), 0, 0, 1, 0},
-  {&__pyx_kp_s_159, __pyx_k_159, sizeof(__pyx_k_159), 0, 0, 1, 0},
+  {&__pyx_kp_s_157, __pyx_k_157, sizeof(__pyx_k_157), 0, 0, 1, 0},
+  {&__pyx_kp_s_158, __pyx_k_158, sizeof(__pyx_k_158), 0, 0, 1, 0},
+  {&__pyx_kp_s_162, __pyx_k_162, sizeof(__pyx_k_162), 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},
@@ -76562,6 +79263,9 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__arr, __pyx_k__arr, sizeof(__pyx_k__arr), 0, 0, 1, 1},
   {&__pyx_n_s__arr_high, __pyx_k__arr_high, sizeof(__pyx_k__arr_high), 0, 0, 1, 1},
   {&__pyx_n_s__arr_low, __pyx_k__arr_low, sizeof(__pyx_k__arr_low), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_e, __pyx_k__bilex_e, sizeof(__pyx_k__bilex_e), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_f, __pyx_k__bilex_f, sizeof(__pyx_k__bilex_f), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_fe, __pyx_k__bilex_fe, sizeof(__pyx_k__bilex_fe), 0, 0, 1, 1},
   {&__pyx_n_s__by_slack_factor, __pyx_k__by_slack_factor, sizeof(__pyx_k__by_slack_factor), 0, 0, 1, 1},
   {&__pyx_n_s__category, __pyx_k__category, sizeof(__pyx_k__category), 0, 0, 1, 1},
   {&__pyx_n_s__chain, __pyx_k__chain, sizeof(__pyx_k__chain), 0, 0, 1, 1},
@@ -76577,6 +79281,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__decode_words, __pyx_k__decode_words, sizeof(__pyx_k__decode_words), 0, 0, 1, 1},
   {&__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__dump_online_rules, __pyx_k__dump_online_rules, sizeof(__pyx_k__dump_online_rules), 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},
@@ -76618,9 +79323,11 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__fwords, __pyx_k__fwords, sizeof(__pyx_k__fwords), 0, 0, 1, 1},
   {&__pyx_n_s__gc, __pyx_k__gc, sizeof(__pyx_k__gc), 0, 0, 1, 1},
   {&__pyx_n_s__genexpr, __pyx_k__genexpr, sizeof(__pyx_k__genexpr), 0, 0, 1, 1},
+  {&__pyx_n_s__get, __pyx_k__get, sizeof(__pyx_k__get), 0, 0, 1, 1},
   {&__pyx_n_s__getLogger, __pyx_k__getLogger, sizeof(__pyx_k__getLogger), 0, 0, 1, 1},
   {&__pyx_n_s__get_e_id, __pyx_k__get_e_id, sizeof(__pyx_k__get_e_id), 0, 0, 1, 1},
   {&__pyx_n_s__get_f_id, __pyx_k__get_f_id, sizeof(__pyx_k__get_f_id), 0, 0, 1, 1},
+  {&__pyx_n_s__get_f_phrases, __pyx_k__get_f_phrases, sizeof(__pyx_k__get_f_phrases), 0, 0, 1, 1},
   {&__pyx_n_s__get_id, __pyx_k__get_id, sizeof(__pyx_k__get_id), 0, 0, 1, 1},
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   {&__pyx_n_s__isa, __pyx_k__isa, sizeof(__pyx_k__isa), 0, 0, 1, 1},
+  {&__pyx_n_s__isvar, __pyx_k__isvar, sizeof(__pyx_k__isvar), 0, 0, 1, 1},
   {&__pyx_n_s__iteritems, __pyx_k__iteritems, sizeof(__pyx_k__iteritems), 0, 0, 1, 1},
   {&__pyx_n_s__itertools, __pyx_k__itertools, sizeof(__pyx_k__itertools), 0, 0, 1, 1},
   {&__pyx_n_s__itervalues, __pyx_k__itervalues, sizeof(__pyx_k__itervalues), 0, 0, 1, 1},
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   {&__pyx_n_s__lattice, __pyx_k__lattice, sizeof(__pyx_k__lattice), 0, 0, 1, 1},
+  {&__pyx_n_s__lex_i, __pyx_k__lex_i, sizeof(__pyx_k__lex_i), 0, 0, 1, 1},
+  {&__pyx_n_s__lex_j, __pyx_k__lex_j, sizeof(__pyx_k__lex_j), 0, 0, 1, 1},
   {&__pyx_n_s__lhs, __pyx_k__lhs, sizeof(__pyx_k__lhs), 0, 0, 1, 1},
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   {&__pyx_n_s__new_e_j, __pyx_k__new_e_j, sizeof(__pyx_k__new_e_j), 0, 0, 1, 1},
+  {&__pyx_n_s__new_lex_i, __pyx_k__new_lex_i, sizeof(__pyx_k__new_lex_i), 0, 0, 1, 1},
+  {&__pyx_n_s__new_lex_j, __pyx_k__new_lex_j, sizeof(__pyx_k__new_lex_j), 0, 0, 1, 1},
   {&__pyx_n_s__new_min_bound, __pyx_k__new_min_bound, sizeof(__pyx_k__new_min_bound), 0, 0, 1, 1},
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   {&__pyx_n_s__nt_open, __pyx_k__nt_open, sizeof(__pyx_k__nt_open), 0, 0, 1, 1},
+  {&__pyx_n_s__ntc, __pyx_k__ntc, sizeof(__pyx_k__ntc), 0, 0, 1, 1},
   {&__pyx_n_s__num_subpatterns, __pyx_k__num_subpatterns, sizeof(__pyx_k__num_subpatterns), 0, 0, 1, 1},
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   {&__pyx_n_s__old_last_nt, __pyx_k__old_last_nt, sizeof(__pyx_k__old_last_nt), 0, 0, 1, 1},
+  {&__pyx_n_s__online, __pyx_k__online, sizeof(__pyx_k__online), 0, 0, 1, 1},
+  {&__pyx_n_s__online_ctx_lookup, __pyx_k__online_ctx_lookup, sizeof(__pyx_k__online_ctx_lookup), 0, 0, 1, 1},
   {&__pyx_n_s__open, __pyx_k__open, sizeof(__pyx_k__open), 0, 0, 1, 1},
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   {&__pyx_n_s__suffix_link, __pyx_k__suffix_link, sizeof(__pyx_k__suffix_link), 0, 0, 1, 1},
+  {&__pyx_n_s__sym, __pyx_k__sym, sizeof(__pyx_k__sym), 0, 0, 1, 1},
   {&__pyx_n_s__syms, __pyx_k__syms, sizeof(__pyx_k__syms), 0, 0, 1, 1},
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   {&__pyx_n_s__tight_phrases, __pyx_k__tight_phrases, sizeof(__pyx_k__tight_phrases), 0, 0, 1, 1},
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-  __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;}
+  __pyx_builtin_sorted = __Pyx_GetName(__pyx_b, __pyx_n_s__sorted); if (!__pyx_builtin_sorted) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __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 = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -77497,56 +80213,56 @@ static int __Pyx_InitCachedConstants(void) {
   __Pyx_GIVEREF(Py_None);
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_98));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":109
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":119
  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)
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  *             logger.info("Sampling strategy: no sampling")             # <<<<<<<<<<<<<<
  * 
  *     def sample(self, PhraseLocation phrase_location):
  */
-  __pyx_k_tuple_102 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_102)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_102 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_102)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   PyTuple_SET_ITEM(__pyx_k_tuple_102, 0, ((PyObject *)__pyx_kp_s_101));
   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_101));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_102));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":338
  *         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 = 326; __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 = 338; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   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":1039
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
  *                         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 = 1039; __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 = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_121));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_122));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1913
  *         # f_ i and j are current, e_ i and j are previous
  *         # We care _considering_ f_j, so it is not yet in counts
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  */
-  __pyx_k_tuple_134 = PyTuple_New(19); if (unlikely(!__pyx_k_tuple_134)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_134 = PyTuple_New(19); if (unlikely(!__pyx_k_tuple_134)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__old_last_nt));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_134));
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+  __pyx_k_codeobj_135 = (PyObject*)__Pyx_PyCode_New(9, 0, 19, 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, 1913, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_135)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2063
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2120
  *     # Debugging
  *     def dump_online_stats(self):
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  *         logger.info('         Online Stats         ')
  *         logger.info('------------------------------')
  */
-  __pyx_k_tuple_140 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_140)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_140 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_140)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_139));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_140));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2064
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2121
  *     def dump_online_stats(self):
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  *         logger.info('         Online Stats         ')             # <<<<<<<<<<<<<<
  *         logger.info('------------------------------')
  *         logger.info('f')
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-  __pyx_k_tuple_142 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_142)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2064; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_142 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_142)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_142));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2065
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2122
  *         logger.info('------------------------------')
  *         logger.info('         Online Stats         ')
  *         logger.info('------------------------------')             # <<<<<<<<<<<<<<
  *         logger.info('f')
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-  __pyx_k_tuple_143 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_143)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2065; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_143 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_143)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_143));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2066
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2123
  *         logger.info('         Online Stats         ')
  *         logger.info('------------------------------')
  *         logger.info('f')             # <<<<<<<<<<<<<<
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-  __pyx_k_tuple_144 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_144)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_144 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_144)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_144));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2069
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2126
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  *         logger.info('e')             # <<<<<<<<<<<<<<
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-  __pyx_k_tuple_146 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_146)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_146 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_146)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_146));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2072
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2129
  *         for w in self.bilex_e:
  *             logger.info(sym_tostring(w) + ' : ' + str(self.bilex_e[w]))
  *         logger.info('fe')             # <<<<<<<<<<<<<<
  *         for w in self.bilex_fe:
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-  __pyx_k_tuple_147 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_147)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2072; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_147 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_147)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_147));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2076
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2133
  *             for w2 in self.bilex_fe[w]:
  *                 logger.info(sym_tostring(w) + ' : ' + sym_tostring(w2) + ' : ' + str(self.bilex_fe[w][w2]))
  *         logger.info('F')             # <<<<<<<<<<<<<<
  *         for ph in self.phrases_f:
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2079
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2136
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2082
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2139
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  *         logger.info('FE')             # <<<<<<<<<<<<<<
- *         for ph in self.phrases_fe:
- *             for ph2 in self.phrases_fe[ph]:
+ *         self.dump_online_rules()
+ * 
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+ *         phrases = set() # (fphrase, lex_i, lex_j)
+ * 
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+ *             if f_j > (f_len - 1) or (f_j - f_i) + 1 > self.max_initial_size:
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  *     return ALPHABET.fromstring(string, terminal)
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+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
+ *     return sym_isvar(sym)
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-  if (__Pyx_SetAttrString(__pyx_m, "PhraseLocation", (PyObject *)&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 74; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_3_sa_PhraseLocation.tp_dict, __pyx_vtabptr_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "PhraseLocation", (PyObject *)&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_PhraseLocation = &__pyx_type_3_sa_PhraseLocation;
-  if (PyType_Ready(&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Sampler", (PyObject *)&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Sampler", (PyObject *)&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_Sampler = &__pyx_type_3_sa_Sampler;
   __pyx_vtabptr_3_sa_HieroCachingRuleFactory = &__pyx_vtable_3_sa_HieroCachingRuleFactory;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.set_idmap = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, struct __pyx_obj_3_sa_DataArray *))__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap;
@@ -78202,9 +80975,9 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_vtable_3_sa_HieroCachingRuleFactory.extract_phrases = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, int, int, int *, int *, int *, int, int, int, int *, int *, int *, int, int, int))__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.create_alignments = (struct __pyx_obj_3_sa_IntList *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, int *, int, PyObject *, PyObject *))__pyx_f_3_sa_23HieroCachingRuleFactory_create_alignments;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.extract = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, struct __pyx_obj_3_sa_Phrase *, struct __pyx_t_3_sa_Matching *, int *, int))__pyx_f_3_sa_23HieroCachingRuleFactory_extract;
-  if (PyType_Ready(&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_3_sa_HieroCachingRuleFactory.tp_dict, __pyx_vtabptr_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HieroCachingRuleFactory", (PyObject *)&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_3_sa_HieroCachingRuleFactory.tp_dict, __pyx_vtabptr_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HieroCachingRuleFactory", (PyObject *)&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_HieroCachingRuleFactory = &__pyx_type_3_sa_HieroCachingRuleFactory;
   __pyx_vtabptr_3_sa_Scorer = &__pyx_vtable_3_sa_Scorer;
   __pyx_vtable_3_sa_Scorer.score = (struct __pyx_obj_3_sa_FeatureVector *(*)(struct __pyx_obj_3_sa_Scorer *, PyObject *))__pyx_f_3_sa_6Scorer_score;
@@ -78220,27 +80993,27 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_ptype_3_sa___pyx_scope_struct_2_genexpr = &__pyx_type_3_sa___pyx_scope_struct_2_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_3_compute_stats) < 0) {__pyx_filename = __pyx_f[9]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_3_compute_stats = &__pyx_type_3_sa___pyx_scope_struct_3_compute_stats;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_4_make_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_4_make_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_4_make_lattice = &__pyx_type_3_sa___pyx_scope_struct_4_make_lattice;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_5_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_5_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_5_genexpr = &__pyx_type_3_sa___pyx_scope_struct_5_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_6_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_6_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_6_genexpr = &__pyx_type_3_sa___pyx_scope_struct_6_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_7_decode_lattice = &__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_8_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_8_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_8_genexpr = &__pyx_type_3_sa___pyx_scope_struct_8_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_9_decode_sentence = &__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_10_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_10_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_10_genexpr = &__pyx_type_3_sa___pyx_scope_struct_10_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_11_encode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_11_encode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_11_encode_words = &__pyx_type_3_sa___pyx_scope_struct_11_encode_words;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_12_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_12_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_12_genexpr = &__pyx_type_3_sa___pyx_scope_struct_12_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_13_decode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_13_decode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_13_decode_words = &__pyx_type_3_sa___pyx_scope_struct_13_decode_words;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_14_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_14_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_14_genexpr = &__pyx_type_3_sa___pyx_scope_struct_14_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_15___iter__) < 0) {__pyx_filename = __pyx_f[7]; __pyx_lineno = 141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_15___iter__ = &__pyx_type_3_sa___pyx_scope_struct_15___iter__;
@@ -78250,24 +81023,28 @@ 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 = 954; __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 = 972; __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_add_instance) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __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_form_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_21_form_rule = &__pyx_type_3_sa___pyx_scope_struct_21_form_rule;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2053; __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_fmt_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2057; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_23_fmt_rule = &__pyx_type_3_sa___pyx_scope_struct_23_fmt_rule;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_24_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __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;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_20_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1182; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_20_genexpr = &__pyx_type_3_sa___pyx_scope_struct_20_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_21_add_instance) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_21_add_instance = &__pyx_type_3_sa___pyx_scope_struct_21_add_instance;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_form_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_22_form_rule = &__pyx_type_3_sa___pyx_scope_struct_22_form_rule;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_23_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2110; __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_fmt_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_24_fmt_rule = &__pyx_type_3_sa___pyx_scope_struct_24_fmt_rule;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_25_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_25_genexpr = &__pyx_type_3_sa___pyx_scope_struct_25_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_26_get_f_phrases) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2161; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_26_get_f_phrases = &__pyx_type_3_sa___pyx_scope_struct_26_get_f_phrases;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_27___iter__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_27___iter__ = &__pyx_type_3_sa___pyx_scope_struct_27___iter__;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_28___str__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_28___str__ = &__pyx_type_3_sa___pyx_scope_struct_28___str__;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_29_genexpr) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_29_genexpr = &__pyx_type_3_sa___pyx_scope_struct_29_genexpr;
   /*--- Type import code ---*/
   /*--- Variable import code ---*/
   /*--- Function import code ---*/
@@ -78330,7 +81107,7 @@ 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_156), 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_159), 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;}
@@ -78412,60 +81189,72 @@ PyMODINIT_FUNC PyInit__sa(void)
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
  *     return ALPHABET.fromstring(string, terminal)
  * 
+ * def isvar(sym):             # <<<<<<<<<<<<<<
+ *     return sym_isvar(sym)
+ * 
+ */
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_3isvar, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
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+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_3_sa_19span_dec, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2214; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_dec, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2214; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "/home/m/workspace/cdec/python/src/sa/features.pxi":1
  * cdef StringMap FD = StringMap() # Feature name dictionary             # <<<<<<<<<<<<<<
  * 
  * INITIAL_CAPACITY = 7 # default number of features
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_StringMap)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_StringMap)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
   __Pyx_XGOTREF(((PyObject *)__pyx_v_3_sa_FD));
   __Pyx_DECREF(((PyObject *)__pyx_v_3_sa_FD));
-  __Pyx_GIVEREF(__pyx_t_1);
-  __pyx_v_3_sa_FD = ((struct __pyx_obj_3_sa_StringMap *)__pyx_t_1);
-  __pyx_t_1 = 0;
+  __Pyx_GIVEREF(__pyx_t_3);
+  __pyx_v_3_sa_FD = ((struct __pyx_obj_3_sa_StringMap *)__pyx_t_3);
+  __pyx_t_3 = 0;
 
   /* "/home/m/workspace/cdec/python/src/sa/features.pxi":3
  * cdef StringMap FD = StringMap() # Feature name dictionary
@@ -78723,20 +81567,20 @@ PyMODINIT_FUNC PyInit__sa(void)
  * 
  * cdef class FeatureVector:
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__INITIAL_CAPACITY); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__INCREMENT, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__INITIAL_CAPACITY); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__INCREMENT, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "_sa.pyx":1
  * import logging             # <<<<<<<<<<<<<<
  * import resource
  * import gzip
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s____test__, ((PyObject *)__pyx_t_1)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s____test__, ((PyObject *)__pyx_t_3)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
diff --git a/python/src/sa/default_scorer.pxi b/python/src/sa/default_scorer.pxi
deleted file mode 100644
index 483f4743..00000000
--- a/python/src/sa/default_scorer.pxi
+++ /dev/null
@@ -1,74 +0,0 @@
-from libc.stdlib cimport malloc, realloc, free
-from libc.math cimport log10
-
-MAXSCORE = -99
-EgivenFCoherent = 0
-SampleCountF = 1
-CountEF = 2
-MaxLexFgivenE = 3
-MaxLexEgivenF = 4
-IsSingletonF = 5
-IsSingletonFE = 6
-NFEATURES = 7
-
-cdef class DefaultScorer(Scorer):
-    cdef BiLex ttable
-    cdef int* fid
-
-    def __dealloc__(self):
-        free(self.fid)
-
-    def __init__(self, BiLex ttable):
-        self.ttable = ttable
-        self.fid = <int*> malloc(NFEATURES*sizeof(int))
-        cdef unsigned i
-        for i, fnames in enumerate(('EgivenFCoherent', 'SampleCountF', 'CountEF',
-                'MaxLexFgivenE', 'MaxLexEgivenF', 'IsSingletonF', 'IsSingletonFE')):
-            self.fid[i] = FD.index(fnames)
-
-    cdef FeatureVector score(self, Phrase fphrase, Phrase ephrase,
-            unsigned paircount, unsigned fcount, unsigned fsample_count):
-        cdef FeatureVector scores = FeatureVector()
-
-        #  EgivenFCoherent
-        cdef float efc = <float>paircount/fsample_count
-        scores.set(self.fid[EgivenFCoherent], -log10(efc) if efc > 0 else MAXSCORE)
-
-        # SampleCountF
-        scores.set(self.fid[SampleCountF], log10(1 + fsample_count))
-
-        # CountEF
-        scores.set(self.fid[CountEF], log10(1 + paircount))
-
-        # MaxLexFgivenE TODO typify
-        ewords = ephrase.words
-        ewords.append('NULL')
-        cdef float mlfe = 0, max_score = -1
-        for f in fphrase.words:
-            for e in ewords:
-                score = self.ttable.get_score(f, e, 1)
-                if score > max_score:
-                    max_score = score
-            mlfe += -log10(max_score) if max_score > 0 else MAXSCORE
-        scores.set(self.fid[MaxLexFgivenE], mlfe)
-
-        # MaxLexEgivenF TODO same
-        fwords = fphrase.words
-        fwords.append('NULL')
-        cdef float mlef = 0
-        max_score = -1
-        for e in ephrase.words:
-            for f in fwords:
-                score = self.ttable.get_score(f, e, 0)
-                if score > max_score:
-                    max_score = score
-            mlef += -log10(max_score) if max_score > 0 else MAXSCORE
-        scores.set(self.fid[MaxLexEgivenF], mlef)
-
-        # IsSingletonF
-        scores.set(self.fid[IsSingletonF], (fcount == 1))
-
-        # IsSingletonFE
-        scores.set(self.fid[IsSingletonFE], (paircount == 1))
-
-        return scores
diff --git a/python/src/sa/rulefactory.pxi b/python/src/sa/rulefactory.pxi
index b10d25dd..7063c2da 100644
--- a/python/src/sa/rulefactory.pxi
+++ b/python/src/sa/rulefactory.pxi
@@ -23,7 +23,17 @@ FeatureContext = namedtuple('FeatureContext',
      'test_sentence',
      'f_text',
      'e_text',
-     'meta'
+     'meta',
+     'online'
+    ])
+
+OnlineFeatureContext = namedtuple('OnlineFeatureContext',
+    ['fcount',
+     'fsample_count',
+     'paircount',
+     'bilex_f',
+     'bilex_e',
+     'bilex_fe'
     ])
 
 cdef int PRECOMPUTE = 0
@@ -264,6 +274,8 @@ cdef class HieroCachingRuleFactory:
     cdef IntList findexes
     cdef IntList findexes1
 
+    cdef bint online
+    cdef samples_f
     cdef phrases_f
     cdef phrases_e
     cdef phrases_fe
@@ -381,6 +393,12 @@ cdef class HieroCachingRuleFactory:
         
         # Online stats 
         
+        # True after data is added
+        self.online = False
+        
+        # Keep track of everything that can be sampled:
+        self.samples_f = defaultdict(int)
+        
         # Phrase counts
         self.phrases_f = defaultdict(int)
         self.phrases_e = defaultdict(int)
@@ -969,6 +987,11 @@ cdef class HieroCachingRuleFactory:
         hit = 0
         reachable_buffer = {}
 
+        # Phrase pairs processed by suffix array extractor.  Do not re-extract
+        # during online extraction.  This is probably the hackiest part of
+        # online grammar extraction.
+        seen_phrases = set()
+        
         # Do not cache between sentences
         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
 
@@ -1124,7 +1147,12 @@ cdef class HieroCachingRuleFactory:
                                                f, e, count, fcount[f], num_samples,
                                                (k,i+spanlen), locs, input_match, 
                                                fwords, self.fda, self.eda,
-                                               meta))
+                                               meta,
+                                               # Include online stats.  None if none.
+                                               self.online_ctx_lookup(f, e)))
+                                    # Phrase pair processed
+                                    if self.online:
+                                        seen_phrases.add((f, e))
                                     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:
@@ -1148,7 +1176,29 @@ cdef class HieroCachingRuleFactory:
                         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
-                
+        
+        # Online rule extraction and scoring
+        if self.online:
+            f_syms = tuple(word[0][0] for word in fwords)
+            for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
+                spanlen = (lex_j - lex_i) + 1
+                if not sym_isvar(f[0]):
+                    spanlen += 1
+                if not sym_isvar(f[1]):
+                    spanlen += 1
+                for e in self.phrases_fe.get(f, ()):
+                    if (f, e) not in seen_phrases:
+                        # Don't add multiple instances of the same phrase here
+                        seen_phrases.add((f, e))
+                        scores = self.scorer.score(FeatureContext(
+                                f, e, 0, 0, 0,
+                                spanlen, None, None, 
+                                fwords, self.fda, self.eda,
+                                meta,
+                                self.online_ctx_lookup(f, e)))
+                        alignment = self.phrases_al[f][e]
+                        yield Rule(self.category, f, e, scores, alignment)
+             
         stop_time = monitor_cpu()
         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))
         gc.collect()
@@ -1828,6 +1878,8 @@ cdef class HieroCachingRuleFactory:
     # (Extract rules, update counts)
     def add_instance(self, f_words, e_words, alignment):
 
+        self.online = True
+        
         # Rules extracted from this instance
         # Track span of lexical items (terminals) to make
         # sure we don't extract the same rule for the same
@@ -1970,11 +2022,17 @@ cdef class HieroCachingRuleFactory:
                 continue
             extract(f_i, f_i, f_len + 1, -1, f_i, 0, [], [], False)
         
+        # Update possible phrases (samples)
+        # This could be more efficiently integrated with extraction
+        # at the cost of readability
+        for (f, lex_i, lex_j) in self.get_f_phrases(f_words):
+            self.samples_f[f] += 1
+            
         # Update phrase counts
         for rule in rules:
             (f_ph, e_ph, al) = rule[:3]
             self.phrases_f[f_ph] += 1
-            self.phrases_e[e_ph] += 1 
+            self.phrases_e[e_ph] += 1
             self.phrases_fe[f_ph][e_ph] += 1
             if not self.phrases_al[f_ph][e_ph]:
                 self.phrases_al[f_ph][e_ph] = al
@@ -1987,7 +2045,6 @@ cdef class HieroCachingRuleFactory:
             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_rule(self, f_i, e_i, f_span, e_span, nt, al):
     
@@ -2080,10 +2137,65 @@ cdef class HieroCachingRuleFactory:
         for ph in self.phrases_e:
             logger.info(str(ph) + ' ||| ' + str(self.phrases_e[ph]))
         logger.info('FE')
+        self.dump_online_rules()
+
+    def dump_online_rules(self):
         for ph in self.phrases_fe:
             for ph2 in self.phrases_fe[ph]:
                 logger.info(self.fmt_rule(str(ph), str(ph2), self.phrases_al[ph][ph2]) + ' ||| ' + str(self.phrases_fe[ph][ph2]))
+                    
+    # Lookup online stats for phrase pair (f, e).  Return None if no match.
+    # IMPORTANT: use get() to avoid adding items to defaultdict
+    def online_ctx_lookup(self, f, e):
+        if self.online:
+            fcount = self.phrases_f.get(f, 0)
+            fsample_count = self.samples_f.get(f, 0)
+            d = self.phrases_fe.get(f, None)
+            paircount = d.get(e, 0) if d else 0
+            return OnlineFeatureContext(fcount, fsample_count, paircount, self.bilex_f, self.bilex_e, self.bilex_fe)
+        return None
+    
+    # Find all phrases that we might try to extract
+    # (Used for EGivenFCoherent)
+    # Return set of (fphrase, lex_i, lex_j)
+    def get_f_phrases(self, f_words):
+
+        f_len = len(f_words)
+        phrases = set() # (fphrase, lex_i, lex_j)
         
+        def extract(f_i, f_j, lex_i, lex_j, wc, ntc, syms):
+            # Phrase extraction limits
+            if f_j > (f_len - 1) or (f_j - f_i) + 1 > self.max_initial_size:
+                return
+            # Extend with word
+            if wc + ntc < self.max_length:
+                syms.append(f_words[f_j])
+                f = Phrase(syms)
+                new_lex_i = min(lex_i, f_j)
+                new_lex_j = max(lex_j, f_j)
+                phrases.add((f, new_lex_i, new_lex_j))
+                extract(f_i, f_j + 1, new_lex_i, new_lex_j, wc + 1, ntc, syms)
+                syms.pop()
+            # Extend with existing non-terminal
+            if syms and sym_isvar(syms[-1]):
+                # Don't re-extract the same phrase
+                extract(f_i, f_j + 1, lex_i, lex_j, wc, ntc, syms)
+            # Extend with new non-terminal
+            if wc + ntc < self.max_length:
+                if not syms or (ntc < self.max_nonterminals and not sym_isvar(syms[-1])):
+                    syms.append(sym_setindex(self.category, ntc + 1))
+                    f = Phrase(syms)
+                    if wc > 0:
+                        phrases.add((f, lex_i, lex_j))
+                    extract(f_i, f_j + 1, lex_i, lex_j, wc, ntc + 1, syms)
+                    syms.pop()
+            
+        # Try to extract phrases from every f index
+        for f_i from 0 <= f_i < f_len:
+            extract(f_i, f_i, f_len, -1, 0, 0, [])
+
+        return phrases
+    
 # Spans are _inclusive_ on both ends [i, j]
 def span_check(vec, i, j):
     k = i
diff --git a/python/src/sa/sym.pxi b/python/src/sa/sym.pxi
index 81f19ef1..f253aec0 100644
--- a/python/src/sa/sym.pxi
+++ b/python/src/sa/sym.pxi
@@ -104,6 +104,9 @@ cdef int sym_setindex(int sym, int id):
 cdef int sym_fromstring(char* string, bint terminal):
     return ALPHABET.fromstring(string, terminal)
 
+def isvar(sym):
+    return sym_isvar(sym)
+
 def make_lattice(words):
     word_ids = (sym_fromstring(word, True) for word in words)
     return tuple(((word, None, 1), ) for word in word_ids)