Merge remote-tracking branch 'upstream/master'

1 files changed, 17151 insertions, 2722 deletions

diff --git a/python/src/_cdec.cpp b/python/src/_cdec.cpp
index 3a127ba9..dcd33448 100644
--- a/python/src/_cdec.cpp
+++ b/python/src/_cdec.cpp
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.16 on Thu Jul  5 16:20:15 2012 */
+/* Generated by Cython 0.17.beta1 on Sun Jul 29 23:00:27 2012 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -47,12 +47,6 @@
 #define CYTHON_COMPILING_IN_CPYTHON 1
 #endif
 
-#if CYTHON_COMPILING_IN_PYPY
-  #define __Pyx_PyCFunction_Call PyObject_Call
-#else
-  #define __Pyx_PyCFunction_Call PyCFunction_Call
-#endif
-
 #if PY_VERSION_HEX < 0x02050000
   typedef int Py_ssize_t;
   #define PY_SSIZE_T_MAX INT_MAX
@@ -60,8 +54,11 @@
   #define PY_FORMAT_SIZE_T ""
   #define PyInt_FromSsize_t(z) PyInt_FromLong(z)
   #define PyInt_AsSsize_t(o)   __Pyx_PyInt_AsInt(o)
-  #define PyNumber_Index(o)    PyNumber_Int(o)
-  #define PyIndex_Check(o)     PyNumber_Check(o)
+  #define PyNumber_Index(o)    ((PyNumber_Check(o) && !PyFloat_Check(o)) ? PyNumber_Int(o) : \
+                                (PyErr_Format(PyExc_TypeError, \
+                                              "expected index value, got %.200s", Py_TYPE(o)->tp_name), \
+                                 (PyObject*)0))
+  #define PyIndex_Check(o)     (PyNumber_Check(o) && !PyFloat_Check(o) && !PyComplex_Check(o))
   #define PyErr_WarnEx(category, message, stacklevel) PyErr_Warn(category, message)
   #define __PYX_BUILD_PY_SSIZE_T "i"
 #else
@@ -130,14 +127,20 @@
 #endif
 
 
-#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_GET_LENGTH)
+#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
   #define CYTHON_PEP393_ENABLED 1
-  #define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_LENGTH(u)
+  #define __Pyx_PyUnicode_READY(op)       (likely(PyUnicode_IS_READY(op)) ? \
+                                              0 : _PyUnicode_Ready((PyObject *)(op)))
+  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_LENGTH(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
+  #define __Pyx_PyUnicode_READ(k, d, i)   PyUnicode_READ(k, d, i)
 #else
   #define CYTHON_PEP393_ENABLED 0
-  #define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_SIZE(u)
+  #define __Pyx_PyUnicode_READY(op)       (0)
+  #define __Pyx_PyUnicode_GET_LENGTH(u)   PyUnicode_GET_SIZE(u)
   #define __Pyx_PyUnicode_READ_CHAR(u, i) ((Py_UCS4)(PyUnicode_AS_UNICODE(u)[i]))
+
+  #define __Pyx_PyUnicode_READ(k, d, i)   ((k=k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
 #endif
 
 #if PY_MAJOR_VERSION >= 3
@@ -270,6 +273,7 @@
 #include <math.h>
 #define __PYX_HAVE___cdec
 #define __PYX_HAVE_API___cdec
+#include "string.h"
 #include <string>
 #include <vector>
 #include <utility>
@@ -285,6 +289,9 @@
 #include "utils/filelib.h"
 #include "utils/sampler.h"
 #include <boost/shared_ptr.hpp>
+#include <boost/program_options.hpp>
+#include "decoder/trule.h"
+#include "decoder/grammar.h"
 #include "decoder/lattice.h"
 #include "decoder/hg.h"
 #include "decoder/viterbi.h"
@@ -292,11 +299,13 @@
 #include "decoder/hg_intersect.h"
 #include "decoder/hg_sampler.h"
 #include "decoder/csplit.h"
+#include "decoder/inside_outside.h"
 #include "decoder/ff_register.h"
 #include "decoder/decoder.h"
 #include "observer.h"
 #include "decoder/kbest.h"
 #include "mteval/ns.h"
+#include "py_scorer.h"
 #include "training/candidate_set.h"
 #ifdef _OPENMP
 #include <omp.h>
@@ -352,7 +361,11 @@ static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
 static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
 static CYTHON_INLINE size_t __Pyx_PyInt_AsSize_t(PyObject*);
 
+#if CYTHON_COMPILING_IN_CPYTHON
 #define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
+#else
+#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
+#endif
 #define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
 
 #ifdef __GNUC__
@@ -382,61 +395,203 @@ static const char *__pyx_filename;
 static const char *__pyx_f[] = {
   "_cdec.pyx",
   "vectors.pxi",
+  "grammar.pxi",
   "hypergraph.pxi",
   "lattice.pxi",
   "mteval.pxi",
+  "stringsource",
+  "cdec.sa._sa.pxd",
 };
 
 /*--- Type declarations ---*/
 struct __pyx_obj_5_cdec_Scorer;
+struct __pyx_obj_5_cdec_NTRef;
+struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr;
+struct __pyx_obj_4cdec_2sa_3_sa_Phrase;
+struct __pyx_obj_5_cdec_Grammar;
+struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot;
+struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase;
 struct __pyx_obj_5_cdec_CandidateSet;
-struct __pyx_obj_5_cdec_SufficientStats;
+struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__;
+struct __pyx_obj_5_cdec_TRule;
+struct __pyx_obj_4cdec_2sa_3_sa_Rule;
+struct __pyx_obj_5_cdec_MRule;
+struct __pyx_obj_5_cdec_SegmentEvaluator;
+struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__;
+struct __pyx_obj_5_cdec_Candidate;
+struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr;
+struct __pyx_obj_5_cdec_NT;
+struct __pyx_obj_5_cdec_HypergraphEdge;
 struct __pyx_obj_5_cdec___pyx_scope_struct_1___iter__;
-struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features;
-struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree;
+struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__;
 struct __pyx_obj_5_cdec_Decoder;
-struct __pyx_obj_5_cdec_SegmentEvaluator;
+struct __pyx_obj_5_cdec_HypergraphNode;
 struct __pyx_obj_5_cdec_SparseVector;
-struct __pyx_obj_5_cdec_Hypergraph;
-struct __pyx_obj_5_cdec_Lattice;
+struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__;
 struct __pyx_obj_5_cdec___pyx_scope_struct____iter__;
-struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest;
-struct __pyx_obj_5_cdec_Candidate;
-struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines;
-struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample;
+struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__;
 struct __pyx_obj_5_cdec_DenseVector;
-struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__;
-struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__;
-struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__;
-struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot;
+struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__;
+struct __pyx_obj_5_cdec_Metric;
+struct __pyx_obj_5_cdec_SufficientStats;
+struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest;
+struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features;
+struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr;
+struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees;
+struct __pyx_obj_5_cdec_Hypergraph;
+struct __pyx_obj_5_cdec_Lattice;
+struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample;
+struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__;
+struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config;
+struct __pyx_obj_5_cdec_TextGrammar;
+struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines;
 struct __pyx_opt_args_5_cdec_as_str;
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":3
- * cimport mteval
+/* "_cdec.pyx":6
+ * cimport decoder
  * 
- * cdef char* as_str(sentence, error_msg='Cannot convert type %s to str'):             # <<<<<<<<<<<<<<
+ * cdef char* as_str(data, char* error_msg='Cannot convert type %s to str'):             # <<<<<<<<<<<<<<
  *     cdef bytes ret
- *     if isinstance(sentence, unicode):
+ *     if isinstance(data, unicode):
  */
 struct __pyx_opt_args_5_cdec_as_str {
   int __pyx_n;
-  PyObject *error_msg;
+  char *error_msg;
 };
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":122
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":117
  *         return CandidateSet(self)
  * 
  * cdef class Scorer:             # <<<<<<<<<<<<<<
  *     cdef string* name
- * 
+ *     cdef mteval.EvaluationMetric* metric
  */
 struct __pyx_obj_5_cdec_Scorer {
   PyObject_HEAD
   std::string *name;
+  EvaluationMetric *metric;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":70
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":20
+ *         return '[%s]' % self.cat
+ * 
+ * cdef class NTRef:             # <<<<<<<<<<<<<<
+ *     cdef public unsigned ref
+ *     def __init__(self, unsigned ref):
+ */
+struct __pyx_obj_5_cdec_NTRef {
+  PyObject_HEAD
+  unsigned int ref;
+};
+
+
+/* "_cdec.pyx":43
+ *     cdef DenseVector weights
+ * 
+ *     def __cinit__(self, config_str=None, **config):             # <<<<<<<<<<<<<<
+ *         """ Configuration can be given as a string:
+ *                 Decoder('formalism = scfg')
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ {
+  PyObject_HEAD
+  PyObject *__pyx_v_config;
+};
+
+
+/* "_cdec.pyx":54
+ *                     'csplit', 'tagger', 'lexalign'):
+ *                 raise InvalidConfig('formalism "%s" unknown' % formalism)
+ *             config_str = '\n'.join('%s = %s' % kv for kv in _make_config(config))             # <<<<<<<<<<<<<<
+ *         cdef istringstream* config_stream = new istringstream(config_str)
+ *         self.dec = new decoder.Decoder(config_stream)
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *__pyx_outer_scope;
+  PyObject *__pyx_v_kv;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":1
+ * cdef class Phrase:             # <<<<<<<<<<<<<<
+ *     cdef int *syms
+ *     cdef int n, *varpos, n_vars
+ */
+struct __pyx_obj_4cdec_2sa_3_sa_Phrase {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtab;
+  int *syms;
+  int n;
+  int *varpos;
+  int n_vars;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":181
+ *         super(MRule, self).__init__(lhs, rhs, e, scores, a)
+ * 
+ * cdef class Grammar:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[grammar.Grammar]* grammar
+ * 
+ */
+struct __pyx_obj_5_cdec_Grammar {
+  PyObject_HEAD
+  boost::shared_ptr<Grammar> *grammar;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":119
+ * 
+ *     property nodes:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.hg.nodes_.size()):
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":57
+ *             yield self[i]
+ * 
+ *     def todot(self):             # <<<<<<<<<<<<<<
+ *         def lines():
+ *             yield 'digraph lattice {'
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec_Lattice *__pyx_v_self;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
+ * import cdec.sa._sa as _sa
+ * 
+ * def _phrase(phrase):             # <<<<<<<<<<<<<<
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * 
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase {
+  PyObject_HEAD
+  PyObject *__pyx_v_phrase;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":65
  *         return result
  * 
  * cdef class CandidateSet:             # <<<<<<<<<<<<<<
@@ -451,79 +606,209 @@ struct __pyx_obj_5_cdec_CandidateSet {
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":36
- *             return fmap
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":167
  * 
- * cdef class SufficientStats:             # <<<<<<<<<<<<<<
- *     cdef mteval.SufficientStats* stats
+ *     property tail_nodes:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.edge.tail_nodes_.size()):
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self;
+  unsigned int __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":50
+ *     return TRule(lhs, f, e, scores, a)
+ * 
+ * cdef class TRule:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[grammar.TRule]* rule
+ * 
+ */
+struct __pyx_obj_5_cdec_TRule {
+  PyObject_HEAD
+  boost::shared_ptr<TRule> *rule;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":7
+ *     cdef public int chunklen(self, int k)
+ * 
+ * cdef class Rule:             # <<<<<<<<<<<<<<
+ *     cdef public int lhs
+ *     cdef readonly Phrase f, e
+ */
+struct __pyx_obj_4cdec_2sa_3_sa_Rule {
+  PyObject_HEAD
+  int lhs;
+  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *f;
+  struct __pyx_obj_4cdec_2sa_3_sa_Phrase *e;
+  float *cscores;
+  int n_scores;
+  PyObject *word_alignments;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":169
+ *                 _phrase(self.f), _phrase(self.e), scores)
+ * 
+ * cdef class MRule(TRule):             # <<<<<<<<<<<<<<
+ *     def __init__(self, lhs, rhs, scores, a=None):
+ *         cdef unsigned i = 1
+ */
+struct __pyx_obj_5_cdec_MRule {
+  struct __pyx_obj_5_cdec_TRule __pyx_base;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":98
+ *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())
+ * 
+ * cdef class SegmentEvaluator:             # <<<<<<<<<<<<<<
+ *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
  *     cdef mteval.EvaluationMetric* metric
  */
-struct __pyx_obj_5_cdec_SufficientStats {
+struct __pyx_obj_5_cdec_SegmentEvaluator {
   PyObject_HEAD
-  SufficientStats *stats;
+  boost::shared_ptr<SegmentEvaluator> *scorer;
   EvaluationMetric *metric;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":55
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":44
+ *         return self.stats.size()
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         for i in range(len(self)):
+ *             yield self[i]
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ {
+  PyObject_HEAD
+  PyObject *__pyx_v_i;
+  struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self;
+  Py_ssize_t __pyx_t_0;
+  PyObject *__pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":12
+ *         return stats
+ * 
+ * cdef class Candidate:             # <<<<<<<<<<<<<<
+ *     cdef mteval.const_Candidate* candidate
+ *     cdef public float score
+ */
+struct __pyx_obj_5_cdec_Candidate {
+  PyObject_HEAD
+  const training::Candidate *candidate;
+  float score;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":165
+ * 
+ *     def __str__(self):
+ *         scores = ' '.join('%s=%s' % feat for feat in self.scores)             # <<<<<<<<<<<<<<
+ *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,
+ *                 _phrase(self.f), _phrase(self.e), scores)
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *__pyx_outer_scope;
+  PyObject *__pyx_v_feat;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":8
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * 
+ * cdef class NT:             # <<<<<<<<<<<<<<
+ *     cdef public bytes cat
+ *     cdef public unsigned ref
+ */
+struct __pyx_obj_5_cdec_NT {
+  PyObject_HEAD
+  PyObject *cat;
+  unsigned int ref;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":147
+ *         return vector
+ * 
+ * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphEdge* edge
+ */
+struct __pyx_obj_5_cdec_HypergraphEdge {
+  PyObject_HEAD
+  struct __pyx_vtabstruct_5_cdec_HypergraphEdge *__pyx_vtab;
+  Hypergraph *hg;
+  Hypergraph::Edge *edge;
+  struct __pyx_obj_5_cdec_TRule *trule;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":67
  *         self.vector.set_value(fid, value)
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
  *         cdef FastSparseVector[weight_t].const_iterator* it = new FastSparseVector[weight_t].const_iterator(self.vector[0], False)
- *         try:
+ *         cdef unsigned i
  */
 struct __pyx_obj_5_cdec___pyx_scope_struct_1___iter__ {
   PyObject_HEAD
-  size_t __pyx_v_i;
+  unsigned int __pyx_v_i;
   FastSparseVector<weight_t>::const_iterator *__pyx_v_it;
   struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self;
   size_t __pyx_t_0;
-  size_t __pyx_t_1;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":60
- *             del derivations
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":209
  * 
- *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
- *         cdef kb.KBestDerivations[FastSparseVector[weight_t], kb.FeatureVectorTraversal]* derivations = new kb.KBestDerivations[FastSparseVector[weight_t], kb.FeatureVectorTraversal](self.hg[0], size)
- *         cdef kb.KBestDerivations[FastSparseVector[weight_t], kb.FeatureVectorTraversal].Derivation* derivation
+ *     property out_edges:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.node.out_edges_.size()):
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features {
+struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ {
   PyObject_HEAD
-  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal>::Derivation *__pyx_v_derivation;
-  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal> *__pyx_v_derivations;
-  struct __pyx_obj_5_cdec_SparseVector *__pyx_v_fmap;
-  unsigned int __pyx_v_k;
-  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_size;
-  unsigned int __pyx_t_0;
-  long __pyx_t_1;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":46
- *             del derivations
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":124
  * 
- *     def kbest_tree(self, size):             # <<<<<<<<<<<<<<
- *         cdef kb.KBestDerivations[vector[WordID], kb.ETreeTraversal]* derivations = new kb.KBestDerivations[vector[WordID], kb.ETreeTraversal](self.hg[0], size)
- *         cdef kb.KBestDerivations[vector[WordID], kb.ETreeTraversal].Derivation* derivation
+ *     property a:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             cdef vector[grammar.AlignmentPoint]* a = &self.rule.get().a_
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree {
+struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ {
   PyObject_HEAD
-  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal>::Derivation *__pyx_v_derivation;
-  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal> *__pyx_v_derivations;
-  unsigned int __pyx_v_k;
-  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_size;
-  PyObject *__pyx_v_tree;
-  unsigned int __pyx_t_0;
-  long __pyx_t_1;
+  std::vector<AlignmentPoint> *__pyx_v_a;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_TRule *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "_cdec.pyx":15
- * class ParseFailed(Exception): pass
+/* "_cdec.pyx":39
+ *             yield key, bytes(value)
  * 
  * cdef class Decoder:             # <<<<<<<<<<<<<<
  *     cdef decoder.Decoder* dec
@@ -536,21 +821,22 @@ struct __pyx_obj_5_cdec_Decoder {
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":103
- *         self.cs.AddKBestCandidates(hypergraph.hg[0], k, self.scorer.get())
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":193
+ *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
- * cdef class SegmentEvaluator:             # <<<<<<<<<<<<<<
- *     cdef shared_ptr[mteval.SegmentEvaluator]* scorer
- *     cdef mteval.EvaluationMetric* metric
+ * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphNode* node
  */
-struct __pyx_obj_5_cdec_SegmentEvaluator {
+struct __pyx_obj_5_cdec_HypergraphNode {
   PyObject_HEAD
-  boost::shared_ptr<SegmentEvaluator> *scorer;
-  EvaluationMetric *metric;
+  struct __pyx_vtabstruct_5_cdec_HypergraphNode *__pyx_vtab;
+  Hypergraph *hg;
+  Hypergraph::Node *node;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":36
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":45
  *         return sparse
  * 
  * cdef class SparseVector:             # <<<<<<<<<<<<<<
@@ -563,34 +849,23 @@ struct __pyx_obj_5_cdec_SparseVector {
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":4
- * cimport kbest as kb
- * 
- * cdef class Hypergraph:             # <<<<<<<<<<<<<<
- *     cdef hypergraph.Hypergraph* hg
- *     cdef MT19937* rng
- */
-struct __pyx_obj_5_cdec_Hypergraph {
-  PyObject_HEAD
-  Hypergraph *hg;
-  MT19937 *rng;
-};
-
-
-/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":3
- * cimport lattice
- * 
- * cdef class Lattice:             # <<<<<<<<<<<<<<
- *     cdef lattice.Lattice* lattice
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":52
+ *         return hypergraph.AsPLF(self.lattice[0], True).c_str()
  * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(len(self)):
  */
-struct __pyx_obj_5_cdec_Lattice {
+struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ {
   PyObject_HEAD
-  Lattice *lattice;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_Lattice *__pyx_v_self;
+  Py_ssize_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":22
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":31
  *         self.vector[0][fid] = value
  * 
  *     def __iter__(self):             # <<<<<<<<<<<<<<
@@ -606,156 +881,349 @@ struct __pyx_obj_5_cdec___pyx_scope_struct____iter__ {
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":32
- *         return fmap
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":90
+ *         return candidate
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(len(self)):
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_CandidateSet *__pyx_v_self;
+  Py_ssize_t __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":3
+ * from cython.operator cimport preincrement as pinc
+ * 
+ * cdef class DenseVector:             # <<<<<<<<<<<<<<
+ *     cdef vector[weight_t]* vector
+ *     cdef bint owned # if True, do not manage memory
+ */
+struct __pyx_obj_5_cdec_DenseVector {
+  PyObject_HEAD
+  std::vector<weight_t> *vector;
+  int owned;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":187
+ *         del self.grammar
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef grammar.const_GrammarIter* root = self.grammar.get().GetRoot()
+ *         cdef grammar.const_RuleBin* rbin = root.GetRules()
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  const RuleBin *__pyx_v_rbin;
+  const GrammarIter *__pyx_v_root;
+  struct __pyx_obj_5_cdec_Grammar *__pyx_v_self;
+  struct __pyx_obj_5_cdec_TRule *__pyx_v_trule;
+  int __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":173
+ *         out.fields[i] = ss[i]
+ * 
+ * cdef class Metric:             # <<<<<<<<<<<<<<
+ *     cdef Scorer scorer
+ *     def __cinit__(self):
+ */
+struct __pyx_obj_5_cdec_Metric {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec_Scorer *scorer;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":26
+ *             return fmap
+ * 
+ * cdef class SufficientStats:             # <<<<<<<<<<<<<<
+ *     cdef mteval.SufficientStats* stats
+ *     cdef mteval.EvaluationMetric* metric
+ */
+struct __pyx_obj_5_cdec_SufficientStats {
+  PyObject_HEAD
+  SufficientStats *stats;
+  EvaluationMetric *metric;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":31
+ *         return unicode(hypergraph.JoshuaVisualizationString(self.hg[0]).c_str(), 'utf8')
  * 
  *     def kbest(self, size):             # <<<<<<<<<<<<<<
- *         cdef kb.KBestDerivations[vector[WordID], kb.ESentenceTraversal]* derivations = new kb.KBestDerivations[vector[WordID], kb.ESentenceTraversal](self.hg[0], size)
- *         cdef kb.KBestDerivations[vector[WordID], kb.ESentenceTraversal].Derivation* derivation
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal]* derivations = new kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal](self.hg[0], size)
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest {
+struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest {
   PyObject_HEAD
   KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal>::Derivation *__pyx_v_derivation;
   KBest::KBestDerivations<std::vector<WordID>,ESentenceTraversal> *__pyx_v_derivations;
   unsigned int __pyx_v_k;
   struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_sentence;
   PyObject *__pyx_v_size;
   unsigned int __pyx_t_0;
   long __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":22
- *         return stats
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":61
+ *             del e_derivations
  * 
- * cdef class Candidate:             # <<<<<<<<<<<<<<
- *     cdef mteval.Candidate* candidate
- *     cdef public float score
+ *     def kbest_features(self, size):             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal].Derivation* derivation
  */
-struct __pyx_obj_5_cdec_Candidate {
+struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features {
   PyObject_HEAD
-  const training::Candidate *candidate;
-  float score;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal>::Derivation *__pyx_v_derivation;
+  KBest::KBestDerivations<FastSparseVector<weight_t>,FeatureVectorTraversal> *__pyx_v_derivations;
+  struct __pyx_obj_5_cdec_SparseVector *__pyx_v_fmap;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":59
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":203
  * 
- *     def todot(self):
- *         def lines():             # <<<<<<<<<<<<<<
- *             yield 'digraph lattice {'
- *             yield 'rankdir = LR;'
+ *     property in_edges:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.node.in_edges_.size()):
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines {
+struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ {
   PyObject_HEAD
-  struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *__pyx_outer_scope;
-  PyObject *__pyx_v_delta;
-  PyObject *__pyx_v_i;
-  PyObject *__pyx_v_label;
-  PyObject *__pyx_v_weight;
-  Py_ssize_t __pyx_t_0;
-  PyObject *__pyx_t_1;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":164
+ *             self.rule.get().lhs_ = -TDConvert(<char *>lhs.cat)
+ * 
+ *     def __str__(self):             # <<<<<<<<<<<<<<
+ *         scores = ' '.join('%s=%s' % feat for feat in self.scores)
+ *         return '%s ||| %s ||| %s ||| %s' % (self.lhs,
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec_TRule *__pyx_v_self;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":6
+ * 
+ * def _phrase(phrase):
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)             # <<<<<<<<<<<<<<
+ * 
+ * cdef class NT:
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *__pyx_outer_scope;
+  PyObject *__pyx_v_w;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
   PyObject *(*__pyx_t_2)(PyObject *);
-  PyObject *__pyx_t_3;
-  Py_ssize_t __pyx_t_4;
-  PyObject *(*__pyx_t_5)(PyObject *);
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":75
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":43
+ *             del derivations
+ * 
+ *     def kbest_trees(self, size):             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal]* f_derivations = new kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal](self.hg[0], size)
+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
+ */
+struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees {
+  PyObject_HEAD
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal>::Derivation *__pyx_v_e_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,ETreeTraversal> *__pyx_v_e_derivations;
+  PyObject *__pyx_v_e_tree;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal>::Derivation *__pyx_v_f_derivation;
+  KBest::KBestDerivations<std::vector<WordID>,FTreeTraversal> *__pyx_v_f_derivations;
+  PyObject *__pyx_v_f_tree;
+  unsigned int __pyx_v_k;
+  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
+  PyObject *__pyx_v_size;
+  unsigned int __pyx_t_0;
+  long __pyx_t_1;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":4
+ * cimport kbest
+ * 
+ * cdef class Hypergraph:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef MT19937* rng
+ */
+struct __pyx_obj_5_cdec_Hypergraph {
+  PyObject_HEAD
+  Hypergraph *hg;
+  MT19937 *rng;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":3
+ * cimport lattice
+ * 
+ * cdef class Lattice:             # <<<<<<<<<<<<<<
+ *     cdef lattice.Lattice* lattice
+ * 
+ */
+struct __pyx_obj_5_cdec_Lattice {
+  PyObject_HEAD
+  Lattice *lattice;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":76
  *             del derivations
  * 
  *     def sample(self, unsigned n):             # <<<<<<<<<<<<<<
  *         cdef vector[hypergraph.Hypothesis]* hypos = new vector[hypergraph.Hypothesis]()
  *         if self.rng == NULL:
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample {
+struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample {
   PyObject_HEAD
   std::vector<HypergraphSampler::Hypothesis> *__pyx_v_hypos;
   unsigned int __pyx_v_k;
   unsigned int __pyx_v_n;
   struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
-  PyObject *__pyx_v_sentence;
   size_t __pyx_t_0;
   unsigned int __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":3
- * from cython.operator cimport preincrement as pinc
- * 
- * cdef class DenseVector:             # <<<<<<<<<<<<<<
- *     cdef vector[weight_t]* vector # Not owned by DenseVector
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":113
  * 
+ *     property edges:
+ *         def __get__(self):             # <<<<<<<<<<<<<<
+ *             cdef unsigned i
+ *             for i in range(self.hg.edges_.size()):
  */
-struct __pyx_obj_5_cdec_DenseVector {
+struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ {
   PyObject_HEAD
-  std::vector<weight_t> *vector;
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self;
+  size_t __pyx_t_0;
+  unsigned int __pyx_t_1;
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":50
- *         return hypergraph.AsPLF(self.lattice[0], True).c_str()
+/* "_cdec.pyx":28
+ * class ParseFailed(Exception): pass
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(len(self)):
+ * def _make_config(config):             # <<<<<<<<<<<<<<
+ *     for key, value in config.items():
+ *         if isinstance(value, dict):
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ {
+struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config {
   PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_5_cdec_Lattice *__pyx_v_self;
-  Py_ssize_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+  PyObject *__pyx_v_config;
+  PyObject *__pyx_v_info;
+  PyObject *__pyx_v_key;
+  PyObject *__pyx_v_name;
+  PyObject *__pyx_v_value;
+  PyObject *__pyx_t_0;
+  PyObject *__pyx_t_1;
+  Py_ssize_t __pyx_t_2;
+  PyObject *(*__pyx_t_3)(PyObject *);
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":54
- *         return self.stats.size()
+/* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":204
+ *             self.grammar.get().SetGrammarName(string(<char *>name))
  * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         for i in range(len(self)):
- *             yield self.stats[0][i]
+ * cdef class TextGrammar(Grammar):             # <<<<<<<<<<<<<<
+ *     def __cinit__(self, rules):
+ *         self.grammar = new shared_ptr[grammar.Grammar](new grammar.TextGrammar())
+ */
+struct __pyx_obj_5_cdec_TextGrammar {
+  struct __pyx_obj_5_cdec_Grammar __pyx_base;
+};
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
+ * 
+ *     def todot(self):
+ *         def lines():             # <<<<<<<<<<<<<<
+ *             yield 'digraph lattice {'
+ *             yield 'rankdir = LR;'
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ {
+struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines {
   PyObject_HEAD
+  struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *__pyx_outer_scope;
+  PyObject *__pyx_v_delta;
   PyObject *__pyx_v_i;
-  struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self;
+  PyObject *__pyx_v_label;
+  PyObject *__pyx_v_weight;
   Py_ssize_t __pyx_t_0;
   PyObject *__pyx_t_1;
   PyObject *(*__pyx_t_2)(PyObject *);
+  PyObject *__pyx_t_3;
+  Py_ssize_t __pyx_t_4;
+  PyObject *(*__pyx_t_5)(PyObject *);
 };
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":95
- *         return candidate
- * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(len(self)):
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/cdec.sa._sa.pxd":1
+ * cdef class Phrase:             # <<<<<<<<<<<<<<
+ *     cdef int *syms
+ *     cdef int n, *varpos, n_vars
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ {
-  PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_5_cdec_CandidateSet *__pyx_v_self;
-  Py_ssize_t __pyx_t_0;
-  unsigned int __pyx_t_1;
+
+struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase {
+  int (*chunkpos)(struct __pyx_obj_4cdec_2sa_3_sa_Phrase *, int);
+  int (*chunklen)(struct __pyx_obj_4cdec_2sa_3_sa_Phrase *, int);
 };
+static struct __pyx_vtabstruct_4cdec_2sa_3_sa_Phrase *__pyx_vtabptr_4cdec_2sa_3_sa_Phrase;
 
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":58
- *         del self.lattice
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":193
+ *         raise NotImplemented('comparison not implemented for HypergraphEdge')
  * 
- *     def todot(self):             # <<<<<<<<<<<<<<
- *         def lines():
- *             yield 'digraph lattice {'
+ * cdef class HypergraphNode:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphNode* node
  */
-struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot {
-  PyObject_HEAD
-  struct __pyx_obj_5_cdec_Lattice *__pyx_v_self;
+
+struct __pyx_vtabstruct_5_cdec_HypergraphNode {
+  PyObject *(*init)(struct __pyx_obj_5_cdec_HypergraphNode *, Hypergraph *, unsigned int);
 };
+static struct __pyx_vtabstruct_5_cdec_HypergraphNode *__pyx_vtabptr_5_cdec_HypergraphNode;
+
+
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":147
+ *         return vector
+ * 
+ * cdef class HypergraphEdge:             # <<<<<<<<<<<<<<
+ *     cdef hypergraph.Hypergraph* hg
+ *     cdef hypergraph.HypergraphEdge* edge
+ */
 
+struct __pyx_vtabstruct_5_cdec_HypergraphEdge {
+  PyObject *(*init)(struct __pyx_obj_5_cdec_HypergraphEdge *, Hypergraph *, unsigned int);
+};
+static struct __pyx_vtabstruct_5_cdec_HypergraphEdge *__pyx_vtabptr_5_cdec_HypergraphEdge;
 #ifndef CYTHON_REFNANNY
   #define CYTHON_REFNANNY 0
 #endif
@@ -817,32 +1285,59 @@ static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyOb
 
 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause); /*proto*/
 
+static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
+    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found); /*proto*/
+
+static CYTHON_INLINE int __Pyx_CheckKeywordStrings(PyObject *kwdict, const char* function_name, int kw_allowed); /*proto*/
+
 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
     const char *name, int exact); /*proto*/
 
+static CYTHON_INLINE PyObject* __Pyx_tp_new(PyObject* type_obj) {
+    return (PyObject*) (((PyTypeObject*)(type_obj))->tp_new(
+        (PyTypeObject*)(type_obj), __pyx_empty_tuple, NULL));
+}
+
 static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
 
+static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname);
+
 static void __Pyx_RaiseDoubleKeywordsError(const char* func_name, PyObject* kw_name); /*proto*/
 
 static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[], \
     PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args, \
     const char* function_name); /*proto*/
 
-static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
-    Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found); /*proto*/
-
-static CYTHON_INLINE int __Pyx_NegateNonNeg(int b) {
-    return unlikely(b < 0) ? b : !b;
-}
-static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
-    return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
+#if CYTHON_COMPILING_IN_CPYTHON
+static CYTHON_INLINE int __Pyx_PyList_Append(PyObject* list, PyObject* x) {
+    PyListObject* L = (PyListObject*) list;
+    Py_ssize_t len = Py_SIZE(list);
+    if (likely(L->allocated > len)) {
+        Py_INCREF(x);
+        PyList_SET_ITEM(list, len, x);
+        Py_SIZE(list) = len+1;
+        return 0;
+    }
+    return PyList_Append(list, x);
 }
+#else
+#define __Pyx_PyList_Append(L,x) PyList_Append(L,x)
+#endif
 
-static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);
-
-static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);
-
-static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected); /*proto*/
+static CYTHON_INLINE PyObject* __Pyx_PyObject_Append(PyObject* L, PyObject* x) {
+    if (likely(PyList_CheckExact(L))) {
+        if (unlikely(PyList_Append(L, x) < 0)) return NULL;
+        Py_INCREF(Py_None);
+        return Py_None; /* this is just to have an accurate signature */
+    } else {
+        PyObject *r, *m;
+        m = __Pyx_GetAttrString(L, "append");
+        if (!m) return NULL;
+        r = PyObject_CallFunctionObjArgs(m, x, NULL);
+        Py_DECREF(m);
+        return r;
+    }
+}
 
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
     PyObject *r;
@@ -855,42 +1350,47 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j
                                                     __Pyx_GetItemInt_List_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i) {
-    if (likely(o != Py_None)) {
-        if (likely((0 <= i) & (i < PyList_GET_SIZE(o)))) {
-            PyObject *r = PyList_GET_ITEM(o, i);
-            Py_INCREF(r);
-            return r;
-        }
-        else if ((-PyList_GET_SIZE(o) <= i) & (i < 0)) {
-            PyObject *r = PyList_GET_ITEM(o, PyList_GET_SIZE(o) + i);
-            Py_INCREF(r);
-            return r;
-        }
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (likely((0 <= i) & (i < PyList_GET_SIZE(o)))) {
+        PyObject *r = PyList_GET_ITEM(o, i);
+        Py_INCREF(r);
+        return r;
+    }
+    else if ((-PyList_GET_SIZE(o) <= i) & (i < 0)) {
+        PyObject *r = PyList_GET_ITEM(o, PyList_GET_SIZE(o) + i);
+        Py_INCREF(r);
+        return r;
     }
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
+#else
+    return PySequence_GetItem(o, i);
+#endif
 }
 #define __Pyx_GetItemInt_Tuple(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \
                                                     __Pyx_GetItemInt_Tuple_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i) {
-    if (likely(o != Py_None)) {
-        if (likely((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
-            PyObject *r = PyTuple_GET_ITEM(o, i);
-            Py_INCREF(r);
-            return r;
-        }
-        else if ((-PyTuple_GET_SIZE(o) <= i) & (i < 0)) {
-            PyObject *r = PyTuple_GET_ITEM(o, PyTuple_GET_SIZE(o) + i);
-            Py_INCREF(r);
-            return r;
-        }
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (likely((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
+        PyObject *r = PyTuple_GET_ITEM(o, i);
+        Py_INCREF(r);
+        return r;
+    }
+    else if ((-PyTuple_GET_SIZE(o) <= i) & (i < 0)) {
+        PyObject *r = PyTuple_GET_ITEM(o, PyTuple_GET_SIZE(o) + i);
+        Py_INCREF(r);
+        return r;
     }
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
+#else
+    return PySequence_GetItem(o, i);
+#endif
 }
 #define __Pyx_GetItemInt(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \
                                                     __Pyx_GetItemInt_Fast(o, i) : \
                                                     __Pyx_GetItemInt_Generic(o, to_py_func(i)))
 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i) {
+#if CYTHON_COMPILING_IN_CPYTHON
     if (PyList_CheckExact(o)) {
         Py_ssize_t n = (likely(i >= 0)) ? i : i + PyList_GET_SIZE(o);
         if (likely((n >= 0) & (n < PyList_GET_SIZE(o)))) {
@@ -906,33 +1406,108 @@ static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i)
             Py_INCREF(r);
             return r;
         }
-    }
-    else if (likely(i >= 0)) {
+    } else {  /* inlined PySequence_GetItem() */
         PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
         if (likely(m && m->sq_item)) {
+            if (unlikely(i < 0) && likely(m->sq_length)) {
+                Py_ssize_t l = m->sq_length(o);
+                if (unlikely(l < 0)) return NULL;
+                i += l;
+            }
             return m->sq_item(o, i);
         }
     }
+#else
+    if (PySequence_Check(o)) {
+        return PySequence_GetItem(o, i);
+    }
+#endif
     return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
 }
 
-static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname);
+static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);
+
+static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);
+
+static CYTHON_INLINE int __Pyx_IterFinish(void); /*proto*/
+
+static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected); /*proto*/
+
+static CYTHON_INLINE int __Pyx_NegateNonNeg(int b) {
+    return unlikely(b < 0) ? b : !b;
+}
+static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
+    return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
+}
+
+#define __Pyx_PyIter_Next(obj) __Pyx_PyIter_Next2(obj, NULL)
+static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject *, PyObject *); /*proto*/
 
 static double __Pyx__PyObject_AsDouble(PyObject* obj); /* proto */
+#if CYTHON_COMPILING_IN_PYPY
+#define __Pyx_PyObject_AsDouble(obj) \
+(likely(PyFloat_CheckExact(obj)) ? PyFloat_AS_DOUBLE(obj) : \
+ likely(PyInt_CheckExact(obj)) ? \
+ PyFloat_AsDouble(obj) : __Pyx__PyObject_AsDouble(obj))
+#else
 #define __Pyx_PyObject_AsDouble(obj) \
 ((likely(PyFloat_CheckExact(obj))) ? \
  PyFloat_AS_DOUBLE(obj) : __Pyx__PyObject_AsDouble(obj))
+#endif
 
 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
 
+static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, long level); /*proto*/
+
 static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases); /*proto*/
 
 static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
                                    PyObject *modname); /*proto*/
 
+#ifndef __Pyx_CppExn2PyErr
+#include <new>
+#include <typeinfo>
+#include <stdexcept>
+#include <ios>
+static void __Pyx_CppExn2PyErr() {
+  try {
+    if (PyErr_Occurred())
+      ; // let the latest Python exn pass through and ignore the current one
+    else
+      throw;
+  } catch (const std::bad_alloc& exn) {
+    PyErr_SetString(PyExc_MemoryError, exn.what());
+  } catch (const std::bad_cast& exn) {
+    PyErr_SetString(PyExc_TypeError, exn.what());
+  } catch (const std::domain_error& exn) {
+    PyErr_SetString(PyExc_ValueError, exn.what());
+  } catch (const std::invalid_argument& exn) {
+    PyErr_SetString(PyExc_ValueError, exn.what());
+  } catch (const std::ios_base::failure& exn) {
+    PyErr_SetString(PyExc_IOError, exn.what());
+  } catch (const std::out_of_range& exn) {
+    PyErr_SetString(PyExc_IndexError, exn.what());
+  } catch (const std::overflow_error& exn) {
+    PyErr_SetString(PyExc_OverflowError, exn.what());
+  } catch (const std::range_error& exn) {
+    PyErr_SetString(PyExc_ArithmeticError, exn.what());
+  } catch (const std::underflow_error& exn) {
+    PyErr_SetString(PyExc_ArithmeticError, exn.what());
+  } catch (const std::exception& exn) {
+    PyErr_SetString(PyExc_RuntimeError, exn.what());
+  }
+  catch (...)
+  {
+    PyErr_SetString(PyExc_RuntimeError, "Unknown exception");
+  }
+}
+#endif
+
+static CYTHON_INLINE WordID __Pyx_PyInt_from_py_WordID(PyObject *);
+
 static PyObject* __Pyx_Globals(void); /*proto*/
 
 #define __Pyx_CyFunction_USED 1
@@ -977,6 +1552,18 @@ static CYTHON_INLINE void __Pyx_CyFunction_SetDefaultsTuple(PyObject *m,
                                                             PyObject *tuple);
 static int __Pyx_CyFunction_init(void);
 
+#include <string.h>
+
+static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals); /*proto*/
+
+static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals); /*proto*/
+
+#if PY_MAJOR_VERSION >= 3
+#define __Pyx_PyString_Equals __Pyx_PyUnicode_Equals
+#else
+#define __Pyx_PyString_Equals __Pyx_PyBytes_Equals
+#endif
+
 static CYTHON_INLINE unsigned char __Pyx_PyInt_AsUnsignedChar(PyObject *);
 
 static CYTHON_INLINE unsigned short __Pyx_PyInt_AsUnsignedShort(PyObject *);
@@ -1009,10 +1596,14 @@ static CYTHON_INLINE signed long __Pyx_PyInt_AsSignedLong(PyObject *);
 
 static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject *);
 
+static void __Pyx_WriteUnraisable(const char *name, int clineno,
+                                  int lineno, const char *filename); /*proto*/
+
 static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
 
 #define __Pyx_Generator_USED
 #include <structmember.h>
+#include <frameobject.h>
 typedef PyObject *(*__pyx_generator_body_t)(PyObject *, PyObject *);
 typedef struct {
     PyObject_HEAD
@@ -1025,16 +1616,38 @@ typedef struct {
     PyObject *exc_traceback;
     PyObject *gi_weakreflist;
     PyObject *classobj;
+    PyObject *yieldfrom;
 } __pyx_GeneratorObject;
 static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
                                                   PyObject *closure);
 static int __pyx_Generator_init(void);
-
-static void __Pyx_WriteUnraisable(const char *name, int clineno,
-                                  int lineno, const char *filename); /*proto*/
+static int __Pyx_Generator_clear(PyObject* self);
+#if 1 || PY_VERSION_HEX < 0x030300B0
+static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue);
+#else
+#define __Pyx_PyGen_FetchStopIterationValue(pvalue) PyGen_FetchStopIterationValue(pvalue)
+#endif
 
 static int __Pyx_check_binary_version(void);
 
+static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
+
+#if !defined(__Pyx_PyIdentifier_FromString)
+#if PY_MAJOR_VERSION < 3
+  #define __Pyx_PyIdentifier_FromString(s) PyString_FromString(s)
+#else
+  #define __Pyx_PyIdentifier_FromString(s) PyUnicode_FromString(s)
+#endif
+#endif
+
+static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name, size_t size, int strict);  /*proto*/
+
+static PyObject *__Pyx_ImportModule(const char *name); /*proto*/
+
+static void* __Pyx_GetVtable(PyObject *dict); /*proto*/
+
+static int __Pyx_ImportFunction(PyObject *module, const char *funcname, void (**f)(void), const char *sig); /*proto*/
+
 typedef struct {
     int code_line;
     PyCodeObject* code_object;
@@ -1055,6 +1668,8 @@ static void __Pyx_AddTraceback(const char *funcname, int c_line,
 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
 
 
+/* Module declarations from 'libc.string' */
+
 /* Module declarations from 'libcpp.string' */
 
 /* Module declarations from 'libcpp.vector' */
@@ -1065,12 +1680,22 @@ static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
 
 /* Module declarations from 'utils' */
 
+/* Module declarations from 'grammar' */
+
 /* Module declarations from 'lattice' */
 
 /* Module declarations from 'hypergraph' */
 
 /* Module declarations from 'decoder' */
 
+/* Module declarations from 'cdec.sa._sa' */
+static PyTypeObject *__pyx_ptype_4cdec_2sa_3_sa_Phrase = 0;
+static PyTypeObject *__pyx_ptype_4cdec_2sa_3_sa_Rule = 0;
+static char *(*__pyx_f_4cdec_2sa_3_sa_sym_tostring)(int); /*proto*/
+static char *(*__pyx_f_4cdec_2sa_3_sa_sym_tocat)(int); /*proto*/
+static int (*__pyx_f_4cdec_2sa_3_sa_sym_isvar)(int); /*proto*/
+static int (*__pyx_f_4cdec_2sa_3_sa_sym_getindex)(int); /*proto*/
+
 /* Module declarations from 'kbest' */
 
 /* Module declarations from 'mteval' */
@@ -1078,88 +1703,174 @@ static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
 /* Module declarations from '_cdec' */
 static PyTypeObject *__pyx_ptype_5_cdec_DenseVector = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_SparseVector = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_NT = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_NTRef = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_TRule = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_MRule = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_Grammar = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_TextGrammar = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_Hypergraph = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_HypergraphEdge = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_HypergraphNode = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_Lattice = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_Candidate = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_SufficientStats = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_CandidateSet = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_SegmentEvaluator = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_Scorer = 0;
+static PyTypeObject *__pyx_ptype_5_cdec_Metric = 0;
 static PyTypeObject *__pyx_ptype_5_cdec_Decoder = 0;
 static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct____iter__ = 0;
 static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_1___iter__ = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_2_kbest = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_3_kbest_tree = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_4_kbest_features = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_5_sample = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_6___iter__ = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_7_todot = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_8_lines = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_9___iter__ = 0;
-static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_10___iter__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_2__phrase = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_3_genexpr = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_4___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_5___str__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_6_genexpr = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_7___iter__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_8_kbest = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_9_kbest_trees = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_10_kbest_features = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_11_sample = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_12___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_13___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_14___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_15___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_16___get__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_17___iter__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_18_todot = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_19_lines = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_20___iter__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_21___iter__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_22__make_config = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_23___cinit__ = 0;
+static PyTypeObject *__pyx_ptype_5_cdec___pyx_scope_struct_24_genexpr = 0;
 static char *__pyx_f_5_cdec_as_str(PyObject *, struct __pyx_opt_args_5_cdec_as_str *__pyx_optional_args); /*proto*/
+static struct __pyx_obj_5_cdec_TRule *__pyx_f_5_cdec_convert_rule(struct __pyx_obj_4cdec_2sa_3_sa_Rule *); /*proto*/
 static struct __pyx_obj_5_cdec_SufficientStats *__pyx_f_5_cdec_as_stats(PyObject *, PyObject *); /*proto*/
+static float __pyx_f_5_cdec__compute_score(void *, SufficientStats *); /*proto*/
+static void __pyx_f_5_cdec__compute_sufficient_stats(void *, std::string *, std::vector<std::string> *, SufficientStats *); /*proto*/
+static PyObject *__pyx_convert_string_to_py_(const std::string &); /*proto*/
 #define __Pyx_MODULE_NAME "_cdec"
 int __pyx_module_is_main__cdec = 0;
 
 /* Implementation of '_cdec' */
 static PyObject *__pyx_builtin_Exception;
+static PyObject *__pyx_builtin_TypeError;
 static PyObject *__pyx_builtin_KeyError;
 static PyObject *__pyx_builtin_range;
-static PyObject *__pyx_builtin_TypeError;
 static PyObject *__pyx_builtin_NotImplemented;
+static PyObject *__pyx_builtin_super;
+static PyObject *__pyx_builtin_ValueError;
 static PyObject *__pyx_builtin_eval;
 static PyObject *__pyx_builtin_enumerate;
 static PyObject *__pyx_builtin_IndexError;
 static PyObject *__pyx_builtin_open;
-static Py_ssize_t __pyx_pf_5_cdec_11DenseVector___len__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_11DenseVector_2__getitem__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
-static int __pyx_pf_5_cdec_11DenseVector_4__setitem__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value); /* proto */
-static PyObject *__pyx_pf_5_cdec_11DenseVector_6__iter__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_11DenseVector_9dot(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
-static PyObject *__pyx_pf_5_cdec_11DenseVector_11tosparse(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
-static void __pyx_pf_5_cdec_12SparseVector___dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_2copy(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_4__getitem__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
-static int __pyx_pf_5_cdec_12SparseVector_6__setitem__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_8__iter__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_11dot(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, PyObject *__pyx_v_other); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_13__richcmp__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y, int __pyx_v_op); /* proto */
-static Py_ssize_t __pyx_pf_5_cdec_12SparseVector_15__len__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static int __pyx_pf_5_cdec_12SparseVector_17__contains__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_19__neg__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_21__iadd__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_23__isub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_25__imul__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar); /* proto */
+static int __pyx_pf_5_cdec_11DenseVector___init__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
+static void __pyx_pf_5_cdec_11DenseVector_2__dealloc__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
+static Py_ssize_t __pyx_pf_5_cdec_11DenseVector_4__len__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_11DenseVector_6__getitem__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
+static int __pyx_pf_5_cdec_11DenseVector_8__setitem__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value); /* proto */
+static PyObject *__pyx_pf_5_cdec_11DenseVector_10__iter__(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_11DenseVector_13dot(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
+static PyObject *__pyx_pf_5_cdec_11DenseVector_15tosparse(struct __pyx_obj_5_cdec_DenseVector *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_12SparseVector___init__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static void __pyx_pf_5_cdec_12SparseVector_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_4copy(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_6__getitem__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
+static int __pyx_pf_5_cdec_12SparseVector_8__setitem__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname, float __pyx_v_value); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_10__iter__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, PyObject *__pyx_v_other); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y, int __pyx_v_op); /* proto */
+static Py_ssize_t __pyx_pf_5_cdec_12SparseVector_17__len__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_12SparseVector_19__contains__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_23__iadd__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_25__isub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_27__imul__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar); /* proto */
 #if PY_MAJOR_VERSION < 3
-static PyObject *__pyx_pf_5_cdec_12SparseVector_27__idiv__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_29__idiv__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar); /* proto */
 #endif
-static PyObject *__pyx_pf_5_cdec_12SparseVector_29__add__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_31__sub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y); /* proto */
-static PyObject *__pyx_pf_5_cdec_12SparseVector_33__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_31__add__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
 #if PY_MAJOR_VERSION < 3
-static PyObject *__pyx_pf_5_cdec_12SparseVector_35__div__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_5_cdec_12SparseVector_37__div__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
 #endif
+static PyObject *__pyx_pf_5_cdec_7_phrase_genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_5_cdec__phrase(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_phrase); /* proto */
+static int __pyx_pf_5_cdec_2NT___init__(struct __pyx_obj_5_cdec_NT *__pyx_v_self, char *__pyx_v_cat, unsigned int __pyx_v_ref); /* proto */
+static PyObject *__pyx_pf_5_cdec_2NT_2__str__(struct __pyx_obj_5_cdec_NT *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_2NT_3cat___get__(struct __pyx_obj_5_cdec_NT *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_2NT_3cat_2__set__(struct __pyx_obj_5_cdec_NT *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
+static int __pyx_pf_5_cdec_2NT_3cat_4__del__(struct __pyx_obj_5_cdec_NT *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_2NT_3ref___get__(struct __pyx_obj_5_cdec_NT *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_2NT_3ref_2__set__(struct __pyx_obj_5_cdec_NT *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
+static int __pyx_pf_5_cdec_5NTRef___init__(struct __pyx_obj_5_cdec_NTRef *__pyx_v_self, unsigned int __pyx_v_ref); /* proto */
+static PyObject *__pyx_pf_5_cdec_5NTRef_2__str__(struct __pyx_obj_5_cdec_NTRef *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_5NTRef_3ref___get__(struct __pyx_obj_5_cdec_NTRef *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5NTRef_3ref_2__set__(struct __pyx_obj_5_cdec_NTRef *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
+static int __pyx_pf_5_cdec_5TRule___init__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_lhs, PyObject *__pyx_v_f, PyObject *__pyx_v_e, PyObject *__pyx_v_scores, PyObject *__pyx_v_a); /* proto */
+static void __pyx_pf_5_cdec_5TRule_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_5arity___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_1f___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5TRule_1f_2__set__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_f); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_1e___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5TRule_1e_2__set__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_e); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_1a___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5TRule_1a_3__set__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_a); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_6scores___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5TRule_6scores_2__set__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_scores); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_3lhs___get__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5TRule_3lhs_2__set__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self, PyObject *__pyx_v_lhs); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_7__str___genexpr(PyObject *__pyx_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_5TRule_4__str__(struct __pyx_obj_5_cdec_TRule *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_5MRule___init__(struct __pyx_obj_5_cdec_MRule *__pyx_v_self, PyObject *__pyx_v_lhs, PyObject *__pyx_v_rhs, PyObject *__pyx_v_scores, PyObject *__pyx_v_a); /* proto */
+static void __pyx_pf_5_cdec_7Grammar___dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Grammar *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Grammar_2__iter__(struct __pyx_obj_5_cdec_Grammar *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Grammar_4name___get__(struct __pyx_obj_5_cdec_Grammar *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_7Grammar_4name_2__set__(struct __pyx_obj_5_cdec_Grammar *__pyx_v_self, PyObject *__pyx_v_name); /* proto */
+static int __pyx_pf_5_cdec_11TextGrammar___cinit__(struct __pyx_obj_5_cdec_TextGrammar *__pyx_v_self, PyObject *__pyx_v_rules); /* proto */
 static void __pyx_pf_5_cdec_10Hypergraph___dealloc__(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_2viterbi(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_tree(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_10Hypergraph_6viterbi_source_tree(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_10Hypergraph_8viterbi_features(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_4viterbi_trees(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_6viterbi_features(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_8viterbi_joshua(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_10kbest(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
-static PyObject *__pyx_pf_5_cdec_10Hypergraph_13kbest_tree(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_13kbest_trees(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_16kbest_features(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_19sample(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_22intersect(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, struct __pyx_obj_5_cdec_Lattice *__pyx_v_lat); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_24prune(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_beam_alpha, PyObject *__pyx_v_density, PyObject *__pyx_v_kwargs); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_26lattice(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_10Hypergraph_28reweight(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
-static int __pyx_pf_5_cdec_7Lattice___init__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, PyObject *__pyx_v_inp); /* proto */
-static PyObject *__pyx_pf_5_cdec_7Lattice_2__getitem__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index); /* proto */
-static int __pyx_pf_5_cdec_7Lattice_4__setitem__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index, PyObject *__pyx_v_arcs); /* proto */
-static Py_ssize_t __pyx_pf_5_cdec_7Lattice_6__len__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_7Lattice_8__str__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_7Lattice_10__iter__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
-static void __pyx_pf_5_cdec_7Lattice_13__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_5edges___get__(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_5nodes___get__(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_4goal___get__(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_6npaths___get__(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_10Hypergraph_30inside_outside(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self); /* proto */
+static Py_ssize_t __pyx_pf_5_cdec_14HypergraphEdge___len__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_9head_node___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_10tail_nodes___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_4span___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_14feature_values___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_4prob___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_2__richcmp__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_x, struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_y, int __pyx_v_op); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphEdge_5trule___get__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static int __pyx_pf_5_cdec_14HypergraphEdge_5trule_2__set__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self, PyObject *__pyx_v_value); /* proto */
+static int __pyx_pf_5_cdec_14HypergraphEdge_5trule_4__del__(struct __pyx_obj_5_cdec_HypergraphEdge *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphNode_8in_edges___get__(struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphNode_9out_edges___get__(struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphNode_4span___get__(struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphNode_3cat___get__(struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_14HypergraphNode___richcmp__(struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_x, struct __pyx_obj_5_cdec_HypergraphNode *__pyx_v_y, int __pyx_v_op); /* proto */
+static int __pyx_pf_5_cdec_7Lattice___cinit__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, PyObject *__pyx_v_inp); /* proto */
+static void __pyx_pf_5_cdec_7Lattice_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Lattice_4__getitem__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index); /* proto */
+static int __pyx_pf_5_cdec_7Lattice_6__setitem__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index, PyObject *__pyx_v_arcs); /* proto */
+static Py_ssize_t __pyx_pf_5_cdec_7Lattice_8__len__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Lattice_10__str__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Lattice_12__iter__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_7Lattice_5todot_lines(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_7Lattice_15todot(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_9Candidate_5words___get__(struct __pyx_obj_5_cdec_Candidate *__pyx_v_self); /* proto */
@@ -1171,8 +1882,9 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_5score___get__(struct __pyx_o
 static PyObject *__pyx_pf_5_cdec_15SufficientStats_6detail___get__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self); /* proto */
 static Py_ssize_t __pyx_pf_5_cdec_15SufficientStats_2__len__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_15SufficientStats_4__iter__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__iadd__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self, struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_other); /* proto */
-static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
+static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__getitem__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self, int __pyx_v_index); /* proto */
+static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__iadd__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self, struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_other); /* proto */
+static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /* proto */
 static int __pyx_pf_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_5_cdec_CandidateSet *__pyx_v_self, struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_evaluator); /* proto */
 static void __pyx_pf_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_CandidateSet *__pyx_v_self); /* proto */
 static Py_ssize_t __pyx_pf_5_cdec_12CandidateSet_4__len__(struct __pyx_obj_5_cdec_CandidateSet *__pyx_v_self); /* proto */
@@ -1182,49 +1894,91 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_11add_kbest(struct __pyx_obj_5_c
 static void __pyx_pf_5_cdec_16SegmentEvaluator___dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_2evaluate(struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_self, PyObject *__pyx_v_sentence); /* proto */
 static PyObject *__pyx_pf_5_cdec_16SegmentEvaluator_4candidate_set(struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_self); /* proto */
-static int __pyx_pf_5_cdec_6Scorer___cinit__(struct __pyx_obj_5_cdec_Scorer *__pyx_v_self, char *__pyx_v_name); /* proto */
+static int __pyx_pf_5_cdec_6Scorer___cinit__(struct __pyx_obj_5_cdec_Scorer *__pyx_v_self, PyObject *__pyx_v_name); /* proto */
 static void __pyx_pf_5_cdec_6Scorer_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Scorer *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Scorer *__pyx_v_self, PyObject *__pyx_v_refs); /* proto */
 static PyObject *__pyx_pf_5_cdec_6Scorer_6__str__(struct __pyx_obj_5_cdec_Scorer *__pyx_v_self); /* proto */
-static int __pyx_pf_5_cdec_7Decoder___cinit__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, char *__pyx_v_config); /* proto */
+static int __pyx_pf_5_cdec_6Metric___cinit__(struct __pyx_obj_5_cdec_Metric *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_6Metric_2__call__(struct __pyx_obj_5_cdec_Metric *__pyx_v_self, PyObject *__pyx_v_refs); /* proto */
+static PyObject *__pyx_pf_5_cdec_6Metric_4score(CYTHON_UNUSED struct __pyx_obj_5_cdec_Metric *__pyx_v_stats); /* proto */
+static PyObject *__pyx_pf_5_cdec_6Metric_6evaluate(CYTHON_UNUSED struct __pyx_obj_5_cdec_Metric *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v_hyp, CYTHON_UNUSED PyObject *__pyx_v_refs); /* proto */
+static PyObject *__pyx_pf_5_cdec_2_make_config(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_config); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Decoder_9__cinit___genexpr(PyObject *__pyx_self); /* proto */
+static int __pyx_pf_5_cdec_7Decoder___cinit__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_config_str, PyObject *__pyx_v_config); /* proto */
 static void __pyx_pf_5_cdec_7Decoder_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_5_cdec_Decoder *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_5_cdec_7Decoder_7weights___get__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self); /* proto */
 static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
-static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_cfg); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Decoder_9formalism___get__(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_weights); /* proto */
 static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_sentence, PyObject *__pyx_v_grammar); /* proto */
-static char __pyx_k_1[] = "cannot take the dot product of %s and SparseVector";
-static char __pyx_k_2[] = "comparison not implemented for SparseVector";
-static char __pyx_k_10[] = "csplit_preserve_full_word";
-static char __pyx_k_11[] = "cannot reweight hypergraph with %s";
-static char __pyx_k_13[] = "Cannot create lattice from %s";
-static char __pyx_k_14[] = "lattice index out of range";
-static char __pyx_k_19[] = "digraph lattice {";
-  static char __pyx_k_20[] = "rankdir = LR;";
-  static char __pyx_k_21[] = "node [shape=circle];";
-  static char __pyx_k_22[] = "%d -> %d [label=\"%s\"];";
-  static char __pyx_k_23[] = "\"";
-  static char __pyx_k_24[] = "\\\"";
-  static char __pyx_k_26[] = "%d [shape=doublecircle]";
-static char __pyx_k_27[] = "}";
-static char __pyx_k_30[] = "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi";
-static char __pyx_k_31[] = "\n";
-static char __pyx_k_33[] = "Cannot convert type %s to str";
-static char __pyx_k_35[] = "candidate set index out of range";
-static char __pyx_k_37[] = "cannot initialize weights with %s";
-static char __pyx_k_40[] = "Cannot translate input type %s";
+static char __pyx_k_1[] = "Cannot convert type %s to str";
+static char __pyx_k_3[] = "cannot take the dot product of %s and SparseVector";
+static char __pyx_k_4[] = "comparison not implemented for SparseVector";
+static char __pyx_k_7[] = " ";
+static char __pyx_k_8[] = "[%s,%d]";
+static char __pyx_k_9[] = "[%s]";
+static char __pyx_k_10[] = "[%d]";
+static char __pyx_k_11[] = "%s=%s";
+static char __pyx_k_12[] = "%s ||| %s ||| %s ||| %s";
+static char __pyx_k_13[] = "the grammar should contain TRule objects";
+static char __pyx_k_15[] = "csplit_preserve_full_word";
+static char __pyx_k_16[] = "cannot reweight hypergraph with %s";
+static char __pyx_k_17[] = "comparison not implemented for HypergraphEdge";
+static char __pyx_k_19[] = "comparison not implemented for HypergraphNode";
+static char __pyx_k_22[] = "Cannot create lattice from %s";
+static char __pyx_k_23[] = "lattice index out of range";
+static char __pyx_k_27[] = "digraph lattice {";
+  static char __pyx_k_28[] = "rankdir = LR;";
+  static char __pyx_k_29[] = "node [shape=circle];";
+  static char __pyx_k_30[] = "%d -> %d [label=\"%s\"];";
+  static char __pyx_k_31[] = "\"";
+  static char __pyx_k_32[] = "\\\"";
+  static char __pyx_k_34[] = "%d [shape=doublecircle]";
+static char __pyx_k_35[] = "}";
+static char __pyx_k_38[] = "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi";
+static char __pyx_k_39[] = "\n";
+static char __pyx_k_41[] = "sufficient stats vector index out of range";
+static char __pyx_k_43[] = "candidate set index out of range";
+static char __pyx_k_45[] = "%s %s";
+static char __pyx_k_46[] = "%s = %s";
+static char __pyx_k_48[] = "formalism \"%s\" unknown";
+static char __pyx_k_49[] = "cannot initialize weights with %s";
+static char __pyx_k_50[] = "#";
+static char __pyx_k_53[] = "Cannot translate input type %s";
+static char __pyx_k_54[] = "cdec.sa._sa";
+static char __pyx_k_55[] = "*";
+static char __pyx_k_58[] = "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi";
+static char __pyx_k_64[] = "/Users/vchahun/Sandbox/cdec/python/src/_cdec.pyx";
+static char __pyx_k__a[] = "a";
+static char __pyx_k__e[] = "e";
+static char __pyx_k__f[] = "f";
 static char __pyx_k__i[] = "i";
 static char __pyx_k__k[] = "k";
+static char __pyx_k__pb[] = "pb";
+static char __pyx_k__CER[] = "CER";
 static char __pyx_k__TER[] = "TER";
+static char __pyx_k___sa[] = "_sa";
+static char __pyx_k__cat[] = "cat";
 static char __pyx_k__dot[] = "dot";
+static char __pyx_k__fst[] = "fst";
+static char __pyx_k__get[] = "get";
+static char __pyx_k__hyp[] = "hyp";
 static char __pyx_k__inp[] = "inp";
+static char __pyx_k__key[] = "key";
+static char __pyx_k__lhs[] = "lhs";
 static char __pyx_k__plf[] = "plf";
+static char __pyx_k__ref[] = "ref";
+static char __pyx_k__rhs[] = "rhs";
 static char __pyx_k__BLEU[] = "BLEU";
 static char __pyx_k__eval[] = "eval";
+static char __pyx_k__info[] = "info";
 static char __pyx_k__join[] = "join";
 static char __pyx_k__name[] = "name";
 static char __pyx_k__open[] = "open";
 static char __pyx_k__refs[] = "refs";
+static char __pyx_k__scfg[] = "scfg";
 static char __pyx_k__self[] = "self";
+static char __pyx_k__span[] = "span";
 static char __pyx_k__utf8[] = "utf8";
 static char __pyx_k___cdec[] = "_cdec";
 static char __pyx_k__delta[] = "delta";
@@ -1232,148 +1986,478 @@ static char __pyx_k__items[] = "items";
 static char __pyx_k__label[] = "label";
 static char __pyx_k__lines[] = "lines";
 static char __pyx_k__range[] = "range";
+static char __pyx_k__rules[] = "rules";
+static char __pyx_k__score[] = "score";
 static char __pyx_k__split[] = "split";
 static char __pyx_k__strip[] = "strip";
+static char __pyx_k__super[] = "super";
+static char __pyx_k__value[] = "value";
 static char __pyx_k__config[] = "config";
-static char __pyx_k__decode[] = "decode";
+static char __pyx_k__csplit[] = "csplit";
 static char __pyx_k__encode[] = "encode";
+static char __pyx_k__format[] = "format";
+static char __pyx_k__phrase[] = "phrase";
+static char __pyx_k__scores[] = "scores";
+static char __pyx_k__tagger[] = "tagger";
 static char __pyx_k__weight[] = "weight";
+static char __pyx_k___phrase[] = "_phrase";
 static char __pyx_k__density[] = "density";
+static char __pyx_k__genexpr[] = "genexpr";
 static char __pyx_k__grammar[] = "grammar";
 static char __pyx_k__replace[] = "replace";
 static char __pyx_k__IBM_BLEU[] = "IBM_BLEU";
 static char __pyx_k__KeyError[] = "KeyError";
 static char __pyx_k____exit__[] = "__exit__";
+static char __pyx_k____init__[] = "__init__";
 static char __pyx_k____main__[] = "__main__";
+static char __pyx_k____name__[] = "__name__";
 static char __pyx_k____test__[] = "__test__";
 static char __pyx_k__encoding[] = "encoding";
+static char __pyx_k__evaluate[] = "evaluate";
+static char __pyx_k__in_edges[] = "in_edges";
+static char __pyx_k__lexalign[] = "lexalign";
+static char __pyx_k__lextrans[] = "lextrans";
 static char __pyx_k__sentence[] = "sentence";
 static char __pyx_k__Exception[] = "Exception";
 static char __pyx_k__TypeError[] = "TypeError";
+static char __pyx_k____class__[] = "__class__";
 static char __pyx_k____enter__[] = "__enter__";
 static char __pyx_k__enumerate[] = "enumerate";
 static char __pyx_k__evaluator[] = "evaluator";
+static char __pyx_k__formalism[] = "formalism";
 static char __pyx_k__IndexError[] = "IndexError";
+static char __pyx_k__ValueError[] = "ValueError";
 static char __pyx_k__beam_alpha[] = "beam_alpha";
+static char __pyx_k__config_str[] = "config_str";
 static char __pyx_k__hypergraph[] = "hypergraph";
+static char __pyx_k__startswith[] = "startswith";
 static char __pyx_k__ParseFailed[] = "ParseFailed";
+static char __pyx_k__PhraseModel_[] = "PhraseModel_";
+static char __pyx_k___make_config[] = "_make_config";
+static char __pyx_k__InvalidConfig[] = "InvalidConfig";
 static char __pyx_k__NotImplemented[] = "NotImplemented";
-static PyObject *__pyx_kp_s_1;
-static PyObject *__pyx_n_s_10;
+static PyObject *__pyx_kp_s_10;
 static PyObject *__pyx_kp_s_11;
+static PyObject *__pyx_kp_s_12;
 static PyObject *__pyx_kp_s_13;
-static PyObject *__pyx_kp_s_14;
+static PyObject *__pyx_n_s_15;
+static PyObject *__pyx_kp_s_16;
+static PyObject *__pyx_kp_s_17;
 static PyObject *__pyx_kp_s_19;
-static PyObject *__pyx_kp_s_2;
-static PyObject *__pyx_kp_s_20;
-static PyObject *__pyx_kp_s_21;
 static PyObject *__pyx_kp_s_22;
 static PyObject *__pyx_kp_s_23;
-static PyObject *__pyx_kp_s_24;
-static PyObject *__pyx_kp_s_26;
 static PyObject *__pyx_kp_s_27;
+static PyObject *__pyx_kp_s_28;
+static PyObject *__pyx_kp_s_29;
+static PyObject *__pyx_kp_s_3;
 static PyObject *__pyx_kp_s_30;
 static PyObject *__pyx_kp_s_31;
-static PyObject *__pyx_kp_s_33;
+static PyObject *__pyx_kp_s_32;
+static PyObject *__pyx_kp_s_34;
 static PyObject *__pyx_kp_s_35;
-static PyObject *__pyx_kp_s_37;
-static PyObject *__pyx_kp_s_40;
+static PyObject *__pyx_kp_s_38;
+static PyObject *__pyx_kp_s_39;
+static PyObject *__pyx_kp_s_4;
+static PyObject *__pyx_kp_s_41;
+static PyObject *__pyx_kp_s_43;
+static PyObject *__pyx_kp_s_45;
+static PyObject *__pyx_kp_s_46;
+static PyObject *__pyx_kp_s_48;
+static PyObject *__pyx_kp_s_49;
+static PyObject *__pyx_kp_s_50;
+static PyObject *__pyx_kp_s_53;
+static PyObject *__pyx_n_s_54;
+static PyObject *__pyx_n_s_55;
+static PyObject *__pyx_kp_s_58;
+static PyObject *__pyx_kp_s_64;
+static PyObject *__pyx_kp_s_7;
+static PyObject *__pyx_kp_s_8;
+static PyObject *__pyx_kp_s_9;
 static PyObject *__pyx_n_s__BLEU;
+static PyObject *__pyx_n_s__CER;
 static PyObject *__pyx_n_s__Exception;
 static PyObject *__pyx_n_s__IBM_BLEU;
 static PyObject *__pyx_n_s__IndexError;
+static PyObject *__pyx_n_s__InvalidConfig;
 static PyObject *__pyx_n_s__KeyError;
 static PyObject *__pyx_n_s__NotImplemented;
 static PyObject *__pyx_n_s__ParseFailed;
+static PyObject *__pyx_n_s__PhraseModel_;
 static PyObject *__pyx_n_s__TER;
 static PyObject *__pyx_n_s__TypeError;
+static PyObject *__pyx_n_s__ValueError;
+static PyObject *__pyx_n_s____class__;
 static PyObject *__pyx_n_s____enter__;
 static PyObject *__pyx_n_s____exit__;
+static PyObject *__pyx_n_s____init__;
 static PyObject *__pyx_n_s____main__;
+static PyObject *__pyx_n_s____name__;
 static PyObject *__pyx_n_s____test__;
 static PyObject *__pyx_n_s___cdec;
+static PyObject *__pyx_n_s___make_config;
+static PyObject *__pyx_n_s___phrase;
+static PyObject *__pyx_n_s___sa;
+static PyObject *__pyx_n_s__a;
 static PyObject *__pyx_n_s__beam_alpha;
+static PyObject *__pyx_n_s__cat;
 static PyObject *__pyx_n_s__config;
-static PyObject *__pyx_n_s__decode;
+static PyObject *__pyx_n_s__config_str;
+static PyObject *__pyx_n_s__csplit;
 static PyObject *__pyx_n_s__delta;
 static PyObject *__pyx_n_s__density;
 static PyObject *__pyx_n_s__dot;
+static PyObject *__pyx_n_s__e;
 static PyObject *__pyx_n_s__encode;
 static PyObject *__pyx_n_s__encoding;
 static PyObject *__pyx_n_s__enumerate;
 static PyObject *__pyx_n_s__eval;
+static PyObject *__pyx_n_s__evaluate;
 static PyObject *__pyx_n_s__evaluator;
+static PyObject *__pyx_n_s__f;
+static PyObject *__pyx_n_s__formalism;
+static PyObject *__pyx_n_s__format;
+static PyObject *__pyx_n_s__fst;
+static PyObject *__pyx_n_s__genexpr;
+static PyObject *__pyx_n_s__get;
 static PyObject *__pyx_n_s__grammar;
+static PyObject *__pyx_n_s__hyp;
 static PyObject *__pyx_n_s__hypergraph;
 static PyObject *__pyx_n_s__i;
+static PyObject *__pyx_n_s__in_edges;
+static PyObject *__pyx_n_s__info;
 static PyObject *__pyx_n_s__inp;
 static PyObject *__pyx_n_s__items;
 static PyObject *__pyx_n_s__join;
 static PyObject *__pyx_n_s__k;
+static PyObject *__pyx_n_s__key;
 static PyObject *__pyx_n_s__label;
+static PyObject *__pyx_n_s__lexalign;
+static PyObject *__pyx_n_s__lextrans;
+static PyObject *__pyx_n_s__lhs;
 static PyObject *__pyx_n_s__lines;
 static PyObject *__pyx_n_s__name;
 static PyObject *__pyx_n_s__open;
+static PyObject *__pyx_n_s__pb;
+static PyObject *__pyx_n_s__phrase;
 static PyObject *__pyx_n_s__plf;
 static PyObject *__pyx_n_s__range;
+static PyObject *__pyx_n_s__ref;
 static PyObject *__pyx_n_s__refs;
 static PyObject *__pyx_n_s__replace;
+static PyObject *__pyx_n_s__rhs;
+static PyObject *__pyx_n_s__rules;
+static PyObject *__pyx_n_s__scfg;
+static PyObject *__pyx_n_s__score;
+static PyObject *__pyx_n_s__scores;
 static PyObject *__pyx_n_s__self;
 static PyObject *__pyx_n_s__sentence;
+static PyObject *__pyx_n_s__span;
 static PyObject *__pyx_n_s__split;
+static PyObject *__pyx_n_s__startswith;
 static PyObject *__pyx_n_s__strip;
+static PyObject *__pyx_n_s__super;
+static PyObject *__pyx_n_s__tagger;
 static PyObject *__pyx_n_s__utf8;
+static PyObject *__pyx_n_s__value;
 static PyObject *__pyx_n_s__weight;
 static PyObject *__pyx_int_0;
 static PyObject *__pyx_int_1;
-static PyObject *__pyx_k_tuple_3;
-static PyObject *__pyx_k_tuple_4;
+static PyObject *__pyx_int_65536;
+static PyObject *__pyx_k_tuple_2;
 static PyObject *__pyx_k_tuple_5;
 static PyObject *__pyx_k_tuple_6;
-static PyObject *__pyx_k_tuple_7;
-static PyObject *__pyx_k_tuple_8;
-static PyObject *__pyx_k_tuple_9;
-static PyObject *__pyx_k_tuple_12;
-static PyObject *__pyx_k_tuple_15;
-static PyObject *__pyx_k_tuple_16;
-static PyObject *__pyx_k_tuple_17;
+static PyObject *__pyx_k_tuple_14;
 static PyObject *__pyx_k_tuple_18;
+static PyObject *__pyx_k_tuple_20;
+static PyObject *__pyx_k_tuple_21;
+static PyObject *__pyx_k_tuple_24;
 static PyObject *__pyx_k_tuple_25;
-static PyObject *__pyx_k_tuple_28;
-static PyObject *__pyx_k_tuple_32;
-static PyObject *__pyx_k_tuple_34;
+static PyObject *__pyx_k_tuple_26;
+static PyObject *__pyx_k_tuple_33;
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":19
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":24
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":25
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":52
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":56
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":57
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-      /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":59
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+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":77
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_11dot(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, PyObject *__pyx_v_other) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_13dot(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, PyObject *__pyx_v_other) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":65
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":78
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":66
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":79
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+    __pyx_t_1 = PyFloat_FromDouble(__pyx_v_self->vector->dot((((struct __pyx_obj_5_cdec_DenseVector *)__pyx_v_other)->vector[0]))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 79; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -2466,7 +3594,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_11dot(struct __pyx_obj_5_cdec_Sp
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":67
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":80
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":68
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":81
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+    __pyx_t_1 = PyFloat_FromDouble(__pyx_v_self->vector->dot((((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_other)->vector[0]))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 81; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":69
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":82
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+  __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_3), ((PyObject *)Py_TYPE(__pyx_v_other))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 82; __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[1]; __pyx_lineno = 82; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = PyObject_Call(__pyx_builtin_TypeError, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 82; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  {__pyx_filename = __pyx_f[1]; __pyx_lineno = 69; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  {__pyx_filename = __pyx_f[1]; __pyx_lineno = 82; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
   __pyx_r = Py_None; __Pyx_INCREF(Py_None);
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@@ -2531,14 +3659,14 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_11dot(struct __pyx_obj_5_cdec_Sp
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-static PyObject *__pyx_pw_5_cdec_12SparseVector_14__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op) {
+static PyObject *__pyx_pw_5_cdec_12SparseVector_16__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_16__richcmp__(PyObject *__pyx_v_x, PyObject *__pyx_v_y, int __pyx_v_op) {
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_15__richcmp__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_y), ((int)__pyx_v_op));
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":71
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":84
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_13__richcmp__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y, int __pyx_v_op) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_15__richcmp__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y, int __pyx_v_op) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":74
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":87
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":72
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":85
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":73
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":86
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":74
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":87
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":75
+    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":88
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":76
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":89
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":78
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+    __pyx_v_fname = PyBytes_AsString(__pyx_arg_fname); if (unlikely((!__pyx_v_fname) && PyErr_Occurred())) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 94; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_19__contains__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((char *)__pyx_v_fname));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":81
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@@ -2721,12 +3849,12 @@ static int __pyx_pw_5_cdec_12SparseVector_18__contains__(PyObject *__pyx_v_self,
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-static int __pyx_pf_5_cdec_12SparseVector_17__contains__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname) {
+static int __pyx_pf_5_cdec_12SparseVector_19__contains__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, char *__pyx_v_fname) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":82
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-static PyObject *__pyx_pw_5_cdec_12SparseVector_20__neg__(PyObject *__pyx_v_self) {
+static PyObject *__pyx_pw_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_v_self); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_22__neg__(PyObject *__pyx_v_self) {
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-  __pyx_r = __pyx_pf_5_cdec_12SparseVector_19__neg__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self));
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_21__neg__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":84
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_19__neg__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_21__neg__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":85
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+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 98; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":86
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":99
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":87
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+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":100
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":88
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":101
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+static PyObject *__pyx_pw_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_24__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other) {
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_other), __pyx_ptype_5_cdec_SparseVector, 1, "other", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_23__iadd__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_other));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":90
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+static PyObject *__pyx_pf_5_cdec_12SparseVector_23__iadd__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":91
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":92
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":105
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+static PyObject *__pyx_pw_5_cdec_12SparseVector_26__isub__(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_26__isub__(PyObject *__pyx_v_self, PyObject *__pyx_v_other) {
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-  __pyx_r = __pyx_pf_5_cdec_12SparseVector_23__isub__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_other));
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_other), __pyx_ptype_5_cdec_SparseVector, 1, "other", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_25__isub__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_other));
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":94
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+static PyObject *__pyx_pf_5_cdec_12SparseVector_25__isub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_other) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":95
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":96
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":109
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+static PyObject *__pyx_pw_5_cdec_12SparseVector_28__imul__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_28__imul__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar) {
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+    __pyx_v_scalar = __pyx_PyFloat_AsFloat(__pyx_arg_scalar); if (unlikely((__pyx_v_scalar == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_27__imul__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((float)__pyx_v_scalar));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":98
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_25__imul__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_27__imul__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":99
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":100
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+static PyObject *__pyx_pw_5_cdec_12SparseVector_30__idiv__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_30__idiv__(PyObject *__pyx_v_self, PyObject *__pyx_arg_scalar) {
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+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_29__idiv__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_self), ((float)__pyx_v_scalar));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":102
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+static PyObject *__pyx_pf_5_cdec_12SparseVector_29__idiv__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_self, float __pyx_v_scalar) {
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   __Pyx_RefNannySetupContext("__idiv__", 0);
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":103
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":116
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  *     def __idiv__(SparseVector self, float scalar):
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@@ -3048,7 +4177,7 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_27__idiv__(struct __pyx_obj_5_cd
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":104
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":117
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@@ -3069,14 +4198,14 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_27__idiv__(struct __pyx_obj_5_cd
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-static PyObject *__pyx_pw_5_cdec_12SparseVector_30__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pw_5_cdec_12SparseVector_32__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_32__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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   __Pyx_RefNannySetupContext("__add__ (wrapper)", 0);
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-  __pyx_r = __pyx_pf_5_cdec_12SparseVector_29__add__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_y));
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_x), __pyx_ptype_5_cdec_SparseVector, 1, "x", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_31__add__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_y));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":106
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":119
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- *         cdef SparseVector result = SparseVector()
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_29__add__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_31__add__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":107
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":120
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  *     def __add__(SparseVector x, SparseVector y):
- *         cdef SparseVector result = SparseVector()             # <<<<<<<<<<<<<<
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":108
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":121
  *     def __add__(SparseVector x, SparseVector y):
- *         cdef SparseVector result = SparseVector()
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":109
- *         cdef SparseVector result = SparseVector()
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":122
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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  *         return result             # <<<<<<<<<<<<<<
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@@ -3150,14 +4280,14 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_29__add__(struct __pyx_obj_5_cde
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-static PyObject *__pyx_pw_5_cdec_12SparseVector_32__sub__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pw_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_34__sub__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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   __Pyx_RefNannySetupContext("__sub__ (wrapper)", 0);
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-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_r = __pyx_pf_5_cdec_12SparseVector_31__sub__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_y));
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_x), __pyx_ptype_5_cdec_SparseVector, 1, "x", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_y), __pyx_ptype_5_cdec_SparseVector, 1, "y", 0))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_33__sub__(((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_x), ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_v_y));
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@@ -3166,15 +4296,15 @@ static PyObject *__pyx_pw_5_cdec_12SparseVector_32__sub__(PyObject *__pyx_v_x, P
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":111
+/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":124
  *         return result
  * 
  *     def __sub__(SparseVector x, SparseVector y):             # <<<<<<<<<<<<<<
- *         cdef SparseVector result = SparseVector()
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_31__sub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_33__sub__(struct __pyx_obj_5_cdec_SparseVector *__pyx_v_x, struct __pyx_obj_5_cdec_SparseVector *__pyx_v_y) {
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@@ -3184,29 +4314,30 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_31__sub__(struct __pyx_obj_5_cde
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":112
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":125
  * 
  *     def __sub__(SparseVector x, SparseVector y):
- *         cdef SparseVector result = SparseVector()             # <<<<<<<<<<<<<<
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SparseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":113
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":126
  *     def __sub__(SparseVector x, SparseVector y):
- *         cdef SparseVector result = SparseVector()
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":114
- *         cdef SparseVector result = SparseVector()
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":127
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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@@ -3231,17 +4362,17 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_31__sub__(struct __pyx_obj_5_cde
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 /* Python wrapper */
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-static PyObject *__pyx_pw_5_cdec_12SparseVector_34__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pw_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
+static PyObject *__pyx_pw_5_cdec_12SparseVector_36__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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-  __pyx_r = __pyx_pf_5_cdec_12SparseVector_33__mul__(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y));
+  __pyx_r = __pyx_pf_5_cdec_12SparseVector_35__mul__(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y));
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-/* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":116
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-static PyObject *__pyx_pf_5_cdec_12SparseVector_33__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pf_5_cdec_12SparseVector_35__mul__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":119
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- *         cdef SparseVector result = SparseVector()
+ *         cdef SparseVector result = SparseVector.__new__(SparseVector)
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+    __pyx_t_3 = __pyx_PyFloat_AsFloat(__pyx_v_y); if (unlikely((__pyx_t_3 == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -3286,46 +4417,47 @@ static PyObject *__pyx_pf_5_cdec_12SparseVector_33__mul__(PyObject *__pyx_v_x, P
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":120
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+    __pyx_t_3 = __pyx_PyFloat_AsFloat(__pyx_v_x); if (unlikely((__pyx_t_3 == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":121
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":134
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- *         cdef SparseVector result = SparseVector()             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
+  if (!(likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":122
+  /* "/Users/vchahun/Sandbox/cdec/python/src/vectors.pxi":135
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 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_10Hypergraph_11kbest(PyObject *__pyx_v_self, PyObject *__pyx_v_size); /*proto*/
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 }
 
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+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.ESentenceTraversal].Derivation* derivation
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 static PyObject *__pyx_pf_5_cdec_10Hypergraph_10kbest(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size) {
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+static PyObject *__pyx_gb_5_cdec_10Hypergraph_12generator4(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":33
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- *         cdef bytes sentence
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":37
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":38
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-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":39
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-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":40
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+static PyObject *__pyx_gb_5_cdec_10Hypergraph_15generator5(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
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+  struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *)__pyx_generator->closure);
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- *         cdef str tree
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+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
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+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 44; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":51
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+ *         cdef kbest.KBestDerivations[vector[WordID], kbest.FTreeTraversal].Derivation* f_derivation
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+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":49
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":52
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+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":54
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-      __pyx_t_5 = 0;
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+      __Pyx_GOTREF(__pyx_t_6);
+      __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      PyTuple_SET_ITEM(__pyx_t_6, 0, ((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      __Pyx_GIVEREF(((PyObject *)__pyx_cur_scope->__pyx_v_f_tree));
+      __Pyx_INCREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
+      PyTuple_SET_ITEM(__pyx_t_6, 1, ((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
+      __Pyx_GIVEREF(((PyObject *)__pyx_cur_scope->__pyx_v_e_tree));
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-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 56; __pyx_clineno = __LINE__; goto __pyx_L5;}
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   /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":58
- *                 yield tree.decode('utf8')
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- *             del derivations             # <<<<<<<<<<<<<<
+ *             del f_derivations             # <<<<<<<<<<<<<<
+ *             del e_derivations
  * 
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-      __Pyx_XDECREF(__pyx_t_4); __pyx_t_4 = 0;
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-    delete __pyx_cur_scope->__pyx_v_derivations;
+    delete __pyx_cur_scope->__pyx_v_f_derivations;
+
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":59
+ *         finally:
+ *             del f_derivations
+ *             del e_derivations             # <<<<<<<<<<<<<<
+ * 
+ *     def kbest_features(self, size):
+ */
+    delete __pyx_cur_scope->__pyx_v_e_derivations;
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-  __Pyx_XDECREF(__pyx_t_5);
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+  __Pyx_XDECREF(__pyx_t_6);
+  __Pyx_XDECREF(__pyx_t_7);
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+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
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-static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator4(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_10Hypergraph_17kbest_features(PyObject *__pyx_v_self, PyObject *__pyx_v_size); /*proto*/
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":60
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+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":61
+ *             del e_derivations
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- *         cdef kb.KBestDerivations[FastSparseVector[weight_t], kb.FeatureVectorTraversal].Derivation* derivation
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal].Derivation* derivation
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 static PyObject *__pyx_pf_5_cdec_10Hypergraph_16kbest_features(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, PyObject *__pyx_v_size) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *__pyx_cur_scope;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)__pyx_ptype_5_cdec___pyx_scope_struct_10_kbest_features->tp_new(__pyx_ptype_5_cdec___pyx_scope_struct_10_kbest_features, __pyx_empty_tuple, NULL);
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_18generator6, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator4(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator6(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *)__pyx_generator->closure);
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)__pyx_generator->closure);
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   unsigned int __pyx_t_1;
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@@ -4360,19 +9567,19 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator4(__pyx_GeneratorObject
     return NULL;
   }
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 61; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":61
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":62
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  *     def kbest_features(self, size):
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- *         cdef kb.KBestDerivations[FastSparseVector[weight_t], kb.FeatureVectorTraversal].Derivation* derivation
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal]* derivations = new kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal](self.hg[0], size)             # <<<<<<<<<<<<<<
+ *         cdef kbest.KBestDerivations[FastSparseVector[weight_t], kbest.FeatureVectorTraversal].Derivation* derivation
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+  __pyx_t_1 = __Pyx_PyInt_AsUnsignedInt(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_1 == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 62; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":65
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":66
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":66
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":67
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+    __pyx_t_2 = __Pyx_PyInt_AsLong(__pyx_cur_scope->__pyx_v_size); if (unlikely((__pyx_t_2 == (long)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L5;}
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-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":67
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":68
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- *                 fmap = SparseVector()
+ *                 fmap = SparseVector.__new__(SparseVector)
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-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":68
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":69
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  *                 if not derivation: break             # <<<<<<<<<<<<<<
- *                 fmap = SparseVector()
+ *                 fmap = SparseVector.__new__(SparseVector)
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+      __pyx_t_4 = __Pyx_tp_new(((PyObject*)__pyx_ptype_5_cdec_SparseVector)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L5;}
       __Pyx_GOTREF(__pyx_t_4);
+      if (!(likely(__Pyx_TypeTest(__pyx_t_4, __pyx_ptype_5_cdec_SparseVector)))) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L5;}
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       __pyx_cur_scope->__pyx_v_fmap = ((struct __pyx_obj_5_cdec_SparseVector *)__pyx_t_4);
       __pyx_t_4 = 0;
 
-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":70
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":71
  *                 if not derivation: break
- *                 fmap = SparseVector()
+ *                 fmap = SparseVector.__new__(SparseVector)
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)             # <<<<<<<<<<<<<<
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  *         finally:
  */
       __pyx_cur_scope->__pyx_v_fmap->vector = new FastSparseVector<weight_t>(__pyx_cur_scope->__pyx_v_derivation->yield);
 
-      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":71
- *                 fmap = SparseVector()
+      /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":72
+ *                 fmap = SparseVector.__new__(SparseVector)
  *                 fmap.vector = new FastSparseVector[weight_t](derivation._yield)
  *                 yield fmap             # <<<<<<<<<<<<<<
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@@ -4458,12 +9666,12 @@ static PyObject *__pyx_gb_5_cdec_10Hypergraph_18generator4(__pyx_GeneratorObject
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       __pyx_t_1 = __pyx_cur_scope->__pyx_t_0;
       __pyx_t_2 = __pyx_cur_scope->__pyx_t_1;
-      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 71; __pyx_clineno = __LINE__; goto __pyx_L5;}
+      if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 72; __pyx_clineno = __LINE__; goto __pyx_L5;}
     }
     __pyx_L8_break:;
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":73
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":74
  *                 yield fmap
  *         finally:
  *             del derivations             # <<<<<<<<<<<<<<
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   __pyx_L0:;
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   __pyx_generator->resume_label = -1;
+  __Pyx_Generator_clear((PyObject*)__pyx_generator);
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-static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator5(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
+static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_10Hypergraph_20sample(PyObject *__pyx_v_self, PyObject *__pyx_arg_n); /*proto*/
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+    __pyx_v_n = __Pyx_PyInt_AsUnsignedInt(__pyx_arg_n); if (unlikely((__pyx_v_n == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":75
+/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":76
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  * 
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 static PyObject *__pyx_pf_5_cdec_10Hypergraph_19sample(struct __pyx_obj_5_cdec_Hypergraph *__pyx_v_self, unsigned int __pyx_v_n) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)__pyx_ptype_5_cdec___pyx_scope_struct_11_sample->tp_new(__pyx_ptype_5_cdec___pyx_scope_struct_11_sample, __pyx_empty_tuple, NULL);
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_10Hypergraph_21generator7, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator5(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_5_cdec_10Hypergraph_21generator7(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
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+  struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)__pyx_generator->closure);
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-  size_t __pyx_t_2;
-  unsigned int __pyx_t_3;
-  PyObject *__pyx_t_4 = NULL;
+  MT19937 *__pyx_t_2;
+  size_t __pyx_t_3;
+  unsigned int __pyx_t_4;
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 75; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 76; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":76
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":77
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":77
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":78
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":78
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":79
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- *         cdef str sentence
+ *         cdef unsigned k
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":79
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":80
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- *         cdef str sentence
  *         cdef unsigned k
+ *         try:
  */
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   /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":82
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+ *                 yield unicode(GetString(hypos[0][k].words).c_str(), 'utf8')
+ *         finally:
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-      __pyx_cur_scope->__pyx_v_k = __pyx_t_3;
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  * 
- *     # TODO richer k-best/sample output (feature vectors, trees?)
+ *     def intersect(self, Lattice lat):
  */
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  * 
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@@ -4780,7 +9984,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_22intersect(struct __pyx_obj_5_cde
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":92
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":89
  * 
  *     def intersect(self, Lattice lat):
  *         return hypergraph.Intersect(lat.lattice[0], self.hg)             # <<<<<<<<<<<<<<
@@ -4788,7 +9992,7 @@ static PyObject *__pyx_pf_5_cdec_10Hypergraph_22intersect(struct __pyx_obj_5_cde
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":94
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  *     def prune(self, beam_alpha=0, density=0, **kwargs):             # <<<<<<<<<<<<<<
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":95
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":96
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":93
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+  __pyx_t_1 = ((PyDict_Contains(((PyObject *)__pyx_v_kwargs), ((PyObject *)__pyx_n_s_15)))); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":97
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":94
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":98
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":95
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":99
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+  __pyx_t_3 = __pyx_PyFloat_AsDouble(__pyx_v_density); if (unlikely((__pyx_t_3 == (double)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":100
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":97
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   if (__pyx_t_1) {
 
-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":101
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":98
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  *         if preserve_mask:
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@@ -4988,7 +10192,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_27lattice(PyObject *__pyx_v_self,
   return __pyx_r;
 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":103
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":104
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  *     def lattice(self): # TODO direct hg -> lattice conversion in cdec
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":105
+  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":102
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@@ -5091,7 +10295,7 @@ static PyObject *__pyx_pw_5_cdec_10Hypergraph_29reweight(PyObject *__pyx_v_self,
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":107
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":108
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":109
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":106
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":110
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":111
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":108
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":113
+    /* "/Users/vchahun/Sandbox/cdec/python/src/hypergraph.pxi":110
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- *     # TODO get feature expectations, get partition function ("inside" score)
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- *     def __getitem__(self, int index):
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+/* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":22
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-static PyObject *__pyx_pf_5_cdec_7Lattice_2__getitem__(struct __pyx_obj_5_cdec_Lattice *__pyx_v_self, int __pyx_v_index) {
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":28
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":41
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":42
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":48
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 /* Python wrapper */
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":52
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":53
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 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_7Lattice_5todot_1lines(PyObject *__pyx_self, CYTHON_UNUSED PyObject *unused); /*proto*/
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":61
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":62
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":64
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+  __Pyx_GOTREF(__pyx_t_4);
+  __pyx_r = __pyx_t_4;
+  __pyx_t_4 = 0;
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+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_4);
+  __Pyx_AddTraceback("_cdec.SufficientStats.__getitem__", __pyx_clineno, __pyx_lineno, __pyx_filename);
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-static PyObject *__pyx_pw_5_cdec_15SufficientStats_8__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other) {
+static PyObject *__pyx_pw_5_cdec_15SufficientStats_10__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other); /*proto*/
+static PyObject *__pyx_pw_5_cdec_15SufficientStats_10__iadd__(PyObject *__pyx_v_self, PyObject *__pyx_v_other) {
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-  __pyx_r = __pyx_pf_5_cdec_15SufficientStats_7__iadd__(((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_v_self), ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_v_other));
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_other), __pyx_ptype_5_cdec_SufficientStats, 1, "other", 0))) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_r = __pyx_pf_5_cdec_15SufficientStats_9__iadd__(((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_v_self), ((struct __pyx_obj_5_cdec_SufficientStats *)__pyx_v_other));
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@@ -7519,20 +14555,20 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_8__iadd__(PyObject *__pyx_v_s
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":58
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  *     def __iadd__(SufficientStats self, SufficientStats other):             # <<<<<<<<<<<<<<
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-static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__iadd__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self, struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_other) {
+static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__iadd__(struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_self, struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_other) {
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":59
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  *     def __iadd__(SufficientStats self, SufficientStats other):
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   (__pyx_v_self->stats[0]) += (__pyx_v_other->stats[0]);
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":60
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":55
  *     def __iadd__(SufficientStats self, SufficientStats other):
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  *         return self             # <<<<<<<<<<<<<<
@@ -7561,17 +14597,17 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_7__iadd__(struct __pyx_obj_5_
 }
 
 /* Python wrapper */
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-static PyObject *__pyx_pw_5_cdec_15SufficientStats_10__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pw_5_cdec_15SufficientStats_12__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y); /*proto*/
+static PyObject *__pyx_pw_5_cdec_15SufficientStats_12__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
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-  __pyx_r = __pyx_pf_5_cdec_15SufficientStats_9__add__(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y));
+  __pyx_r = __pyx_pf_5_cdec_15SufficientStats_11__add__(((PyObject *)__pyx_v_x), ((PyObject *)__pyx_v_y));
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":62
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  *         return self
  * 
  *     def __add__(x, y):             # <<<<<<<<<<<<<<
@@ -7579,7 +14615,7 @@ static PyObject *__pyx_pw_5_cdec_15SufficientStats_10__add__(PyObject *__pyx_v_x
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  */
 
-static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
+static PyObject *__pyx_pf_5_cdec_15SufficientStats_11__add__(PyObject *__pyx_v_x, PyObject *__pyx_v_y) {
   struct __pyx_obj_5_cdec_SufficientStats *__pyx_v_sx = 0;
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@@ -7591,43 +14627,43 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__add__(PyObject *__pyx_v_x,
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":63
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":58
  * 
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-  __pyx_t_1 = ((PyObject *)__pyx_f_5_cdec_as_stats(__pyx_v_x, __pyx_v_y)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = ((PyObject *)__pyx_f_5_cdec_as_stats(__pyx_v_x, __pyx_v_y)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 58; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":64
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":59
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  *         cdef SufficientStats sy = as_stats(y, x)             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = ((PyObject *)__pyx_f_5_cdec_as_stats(__pyx_v_y, __pyx_v_x)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 64; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = ((PyObject *)__pyx_f_5_cdec_as_stats(__pyx_v_y, __pyx_v_x)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 59; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":65
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":60
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  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SufficientStats)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 65; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SufficientStats)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 60; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":66
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":61
  *         cdef SufficientStats sy = as_stats(y, x)
  *         cdef SufficientStats result = SufficientStats()
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@@ -7636,7 +14672,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__add__(PyObject *__pyx_v_x,
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":67
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":62
  *         cdef SufficientStats result = SufficientStats()
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@@ -7645,7 +14681,7 @@ static PyObject *__pyx_pf_5_cdec_15SufficientStats_9__add__(PyObject *__pyx_v_x,
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   __pyx_v_result->metric = __pyx_v_sx->metric;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":68
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":63
  *         result.stats = new mteval.SufficientStats(mteval.add(sx.stats[0], sy.stats[0]))
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 static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
   struct __pyx_obj_5_cdec_SegmentEvaluator *__pyx_v_evaluator = 0;
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   int __pyx_r;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("__cinit__ (wrapper)", 0);
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@@ -7693,12 +14729,11 @@ static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyO
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       switch (pos_args) {
         case  0:
-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__evaluator);
-        if (likely(values[0])) kw_args--;
+        if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__evaluator)) != 0)) kw_args--;
         else goto __pyx_L5_argtuple_error;
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       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 75; __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[5]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -7709,13 +14744,13 @@ static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyO
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   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 1, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[4]; __pyx_lineno = 75; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 1, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[5]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_evaluator), __pyx_ptype_5_cdec_SegmentEvaluator, 1, "evaluator", 0))) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 70; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -7725,7 +14760,7 @@ static int __pyx_pw_5_cdec_12CandidateSet_1__cinit__(PyObject *__pyx_v_self, PyO
   return __pyx_r;
 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":75
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":70
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":76
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":71
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  *     def __cinit__(self, SegmentEvaluator evaluator):
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":77
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":72
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@@ -7756,7 +14791,7 @@ static int __pyx_pf_5_cdec_12CandidateSet___cinit__(struct __pyx_obj_5_cdec_Cand
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   __pyx_v_self->metric = __pyx_v_evaluator->metric;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":78
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":73
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-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":80
+/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":75
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  *     def __dealloc__(self):             # <<<<<<<<<<<<<<
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":81
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":76
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  *     def __dealloc__(self):
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@@ -7800,7 +14835,7 @@ static void __pyx_pf_5_cdec_12CandidateSet_2__dealloc__(CYTHON_UNUSED struct __p
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   delete __pyx_v_self->scorer;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":82
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":77
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":84
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":85
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  *     def __len__(self):
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+    __pyx_v_k = __Pyx_PyInt_AsInt(__pyx_arg_k); if (unlikely((__pyx_v_k == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 82; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":87
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":88
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":89
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":90
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+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Candidate)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 85; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":91
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":92
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@@ -7953,7 +14988,7 @@ static PyObject *__pyx_pf_5_cdec_12CandidateSet_6__getitem__(struct __pyx_obj_5_
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":93
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 /* Python wrapper */
 static PyObject *__pyx_pw_5_cdec_12CandidateSet_9__iter__(PyObject *__pyx_v_self); /*proto*/
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":95
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-  struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *__pyx_cur_scope;
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+  __pyx_cur_scope = (struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *)__pyx_ptype_5_cdec___pyx_scope_struct_21___iter__->tp_new(__pyx_ptype_5_cdec___pyx_scope_struct_21___iter__, __pyx_empty_tuple, NULL);
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_5_cdec_12CandidateSet_10generator15, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 90; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator8(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
+static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator15(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value) /* generator body */
 {
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+  struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *__pyx_cur_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *)__pyx_generator->closure);
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-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":97
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":92
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+  __pyx_t_1 = PyObject_Length(((PyObject *)__pyx_cur_scope->__pyx_v_self)); if (unlikely(__pyx_t_1 == -1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 92; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":98
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":93
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+    __pyx_t_3 = __Pyx_GetItemInt(((PyObject *)__pyx_cur_scope->__pyx_v_self), __pyx_cur_scope->__pyx_v_i, sizeof(unsigned int)+1, PyLong_FromUnsignedLong); if (!__pyx_t_3) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8085,7 +15120,7 @@ static PyObject *__pyx_gb_5_cdec_12CandidateSet_10generator8(__pyx_GeneratorObje
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 98; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 93; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
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-        values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__hypergraph);
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+          __Pyx_RaiseArgtupleInvalid("add_kbest", 1, 2, 2, 1); {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+    __pyx_v_k = __Pyx_PyInt_AsUnsignedInt(values[1]); if (unlikely((__pyx_v_k == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("add_kbest", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_hypergraph), __pyx_ptype_5_cdec_Hypergraph, 1, "hypergraph", 0))) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 95; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8162,7 +15196,7 @@ static PyObject *__pyx_pw_5_cdec_12CandidateSet_12add_kbest(PyObject *__pyx_v_se
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":100
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":101
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-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":107
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":108
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":110
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+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SufficientStats)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":113
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":108
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":114
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":109
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":115
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":116
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":117
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":112
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-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":119
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+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_CandidateSet)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_CandidateSet)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 static int __pyx_pw_5_cdec_6Scorer_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
 static int __pyx_pw_5_cdec_6Scorer_1__cinit__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
-  char *__pyx_v_name;
-  static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__name,0};
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":126
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+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":123
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-  __pyx_v_self->name = new std::string(__pyx_v_name);
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":129
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-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":131
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":133
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@@ -8613,14 +15678,14 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":134
- *         cdef mteval.EvaluationMetric* metric = mteval.Instance(self.name[0])
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":131
+ *     def __call__(self, refs):
  *         if isinstance(refs, unicode) or isinstance(refs, str):
  *             refs = [refs]             # <<<<<<<<<<<<<<
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  *         cdef vector[WordID]* refv
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-    __pyx_t_1 = PyList_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyList_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 131; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   }
   __pyx_L3:;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":135
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":132
  *         if isinstance(refs, unicode) or isinstance(refs, str):
  *             refs = [refs]
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  */
   __pyx_v_refsv = new std::vector<std::vector<WordID> >();
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":138
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":135
  *         cdef vector[WordID]* refv
  *         cdef bytes ref_str
  *         for ref in refs:             # <<<<<<<<<<<<<<
@@ -8652,23 +15717,31 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
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-    __pyx_t_5 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_refs); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_refs); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     if (!__pyx_t_6 && PyList_CheckExact(__pyx_t_1)) {
       if (__pyx_t_5 >= PyList_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_7 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_5); __Pyx_INCREF(__pyx_t_7); __pyx_t_5++;
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+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
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       if (__pyx_t_5 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
+      #if CYTHON_COMPILING_IN_CPYTHON
       __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_5); __Pyx_INCREF(__pyx_t_7); __pyx_t_5++;
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+      __pyx_t_7 = PySequence_ITEM(__pyx_t_1, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
+      #endif
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-          else {__pyx_filename = __pyx_f[4]; __pyx_lineno = 138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[5]; __pyx_lineno = 135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -8678,7 +15751,7 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
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     __pyx_t_7 = 0;
 
-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":139
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":136
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  *         for ref in refs:
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@@ -8687,22 +15760,22 @@ static PyObject *__pyx_pf_5_cdec_6Scorer_4__call__(struct __pyx_obj_5_cdec_Score
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-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":140
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":137
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+    __pyx_t_7 = PyObject_GetAttr(__pyx_v_ref, __pyx_n_s__strip); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_8 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_DECREF(__pyx_t_8); __pyx_t_8 = 0;
 
-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":141
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":138
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  *             refsv.push_back(refv[0])             # <<<<<<<<<<<<<<
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  */
     __pyx_v_refsv->push_back((__pyx_v_refv[0]));
 
-    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":142
+    /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":139
  *             ConvertSentence(string(as_str(ref.strip())), refv)
  *             refsv.push_back(refv[0])
  *             del refv             # <<<<<<<<<<<<<<
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":144
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":141
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  *         cdef unsigned i
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- *         evaluator.metric = metric
- *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](metric.CreateSegmentEvaluator(refsv[0]))
+ *         evaluator.metric = self.metric
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SegmentEvaluator)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_SegmentEvaluator)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":145
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":142
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- *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](metric.CreateSegmentEvaluator(refsv[0]))
- *         del refsv # in theory should not delete but store in SegmentEvaluator
+ *         evaluator.metric = self.metric             # <<<<<<<<<<<<<<
+ *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](
+ *                 self.metric.CreateSegmentEvaluator(refsv[0]))
  */
-  __pyx_v_evaluator->metric = __pyx_v_metric;
+  __pyx_v_evaluator->metric = __pyx_v_self->metric;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":146
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":143
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- *         evaluator.metric = metric
- *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](metric.CreateSegmentEvaluator(refsv[0]))             # <<<<<<<<<<<<<<
+ *         evaluator.metric = self.metric
+ *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](             # <<<<<<<<<<<<<<
+ *                 self.metric.CreateSegmentEvaluator(refsv[0]))
  *         del refsv # in theory should not delete but store in SegmentEvaluator
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  */
-  __pyx_v_evaluator->scorer = new boost::shared_ptr<SegmentEvaluator>(__pyx_v_metric->CreateSegmentEvaluator((__pyx_v_refsv[0])));
+  __pyx_v_evaluator->scorer = new boost::shared_ptr<SegmentEvaluator>(__pyx_v_self->metric->CreateSegmentEvaluator((__pyx_v_refsv[0])));
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":147
- *         evaluator.metric = metric
- *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](metric.CreateSegmentEvaluator(refsv[0]))
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":145
+ *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](
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- *         evaluator.scorer = new shared_ptr[mteval.SegmentEvaluator](metric.CreateSegmentEvaluator(refsv[0]))
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":146
+ *                 self.metric.CreateSegmentEvaluator(refsv[0]))
  *         del refsv # in theory should not delete but store in SegmentEvaluator
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 }
 
-/* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":150
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":151
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  *     def __str__(self):
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- * BLEU = Scorer('IBM_BLEU')
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 }
 
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+      __Pyx_DECREF(((PyObject *)__pyx_t_6)); __pyx_t_6 = 0;
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+      __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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+      goto __pyx_L4;
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-  register_feature_functions();
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  *         del config_stream
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-  __pyx_v_config_stream = new std::istringstream(__pyx_v_config);
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-  /* "_cdec.pyx":22
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- *         cdef istringstream* config_stream = new istringstream(config)
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-  /* "_cdec.pyx":23
- *         cdef istringstream* config_stream = new istringstream(config)
+  /* "_cdec.pyx":57
+ *         cdef istringstream* config_stream = new istringstream(config_str)
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  *         del config_stream             # <<<<<<<<<<<<<<
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+ *         self.weights = DenseVector.__new__(DenseVector)
  *         self.weights.vector = &self.dec.CurrentWeightVector()
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-  /* "_cdec.pyx":24
+  /* "_cdec.pyx":58
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  *         del config_stream
- *         self.weights = DenseVector()             # <<<<<<<<<<<<<<
+ *         self.weights = DenseVector.__new__(DenseVector)             # <<<<<<<<<<<<<<
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- * 
+ *         self.weights.owned = True
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_DenseVector)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 24; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  __Pyx_GIVEREF(__pyx_t_1);
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+  __Pyx_GOTREF(__pyx_t_6);
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+  __Pyx_GIVEREF(__pyx_t_6);
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-  __pyx_v_self->weights = ((struct __pyx_obj_5_cdec_DenseVector *)__pyx_t_1);
-  __pyx_t_1 = 0;
+  __pyx_v_self->weights = ((struct __pyx_obj_5_cdec_DenseVector *)__pyx_t_6);
+  __pyx_t_6 = 0;
 
-  /* "_cdec.pyx":25
+  /* "_cdec.pyx":59
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- *         self.weights = DenseVector()
+ *         self.weights = DenseVector.__new__(DenseVector)
  *         self.weights.vector = &self.dec.CurrentWeightVector()             # <<<<<<<<<<<<<<
+ *         self.weights.owned = True
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- *     def __dealloc__(self):
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+  /* "_cdec.pyx":60
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+ * 
+ *     def __dealloc__(self):
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+  __pyx_v_self->weights->owned = 1;
+
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+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_6);
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-/* "_cdec.pyx":27
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-/* "_cdec.pyx":31
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-  /* "_cdec.pyx":32
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-/* "_cdec.pyx":34
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-  /* "_cdec.pyx":35
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-    /* "_cdec.pyx":36
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-    /* "_cdec.pyx":38
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     __pyx_v_self->weights->vector->clear();
 
-    /* "_cdec.pyx":39
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-  /* "_cdec.pyx":40
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  *             elif isinstance(weights, dict):             # <<<<<<<<<<<<<<
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-    /* "_cdec.pyx":41
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         if (__pyx_t_4 >= PyList_GET_SIZE(__pyx_t_1)) break;
+        #if CYTHON_COMPILING_IN_CPYTHON
         __pyx_t_3 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
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         __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_4); __Pyx_INCREF(__pyx_t_3); __pyx_t_4++;
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+        __pyx_t_3 = PySequence_ITEM(__pyx_t_1, __pyx_t_4); __pyx_t_4++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 77; __pyx_clineno = __LINE__; goto __pyx_L1_error;};
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-            else {__pyx_filename = __pyx_f[0]; __pyx_lineno = 41; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -9206,29 +17757,35 @@ static int __pyx_pf_5_cdec_7Decoder_7weights_2__set__(struct __pyx_obj_5_cdec_De
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       if ((likely(PyTuple_CheckExact(__pyx_t_3))) || (PyList_CheckExact(__pyx_t_3))) {
         PyObject* sequence = __pyx_t_3;
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+        Py_ssize_t size = Py_SIZE(sequence);
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-static PyObject *__pyx_pf_5_cdec_7Decoder_4read_weights(struct __pyx_obj_5_cdec_Decoder *__pyx_v_self, PyObject *__pyx_v_cfg) {
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  *         cdef Hypergraph hg = Hypergraph()
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-  __pyx_t_2 = (__pyx_v_observer.hypergraph == NULL);
-  if (__pyx_t_2) {
+  __pyx_t_3 = (__pyx_v_observer.hypergraph == NULL);
+  if (__pyx_t_3) {
 
-    /* "_cdec.pyx":66
- *         self.dec.Decode(string(<char *>inp), &observer)
+    /* "_cdec.pyx":110
+ *         self.dec.Decode(string(input_str), &observer)
  *         if observer.hypergraph == NULL:
  *             raise ParseFailed()             # <<<<<<<<<<<<<<
  *         cdef Hypergraph hg = Hypergraph()
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])
  */
-    __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__ParseFailed); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_1 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__ParseFailed); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __Pyx_Raise(__pyx_t_1, 0, 0, 0);
+    __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __Pyx_GOTREF(__pyx_t_5);
     __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
-    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 66; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    goto __pyx_L5;
+    __Pyx_Raise(__pyx_t_5, 0, 0, 0);
+    __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
+    {__pyx_filename = __pyx_f[0]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    goto __pyx_L6;
   }
-  __pyx_L5:;
+  __pyx_L6:;
 
-  /* "_cdec.pyx":67
+  /* "_cdec.pyx":111
  *         if observer.hypergraph == NULL:
  *             raise ParseFailed()
  *         cdef Hypergraph hg = Hypergraph()             # <<<<<<<<<<<<<<
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])
  *         return hg
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Hypergraph)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  __pyx_v_hg = ((struct __pyx_obj_5_cdec_Hypergraph *)__pyx_t_1);
-  __pyx_t_1 = 0;
+  __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Hypergraph)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_5);
+  __pyx_v_hg = ((struct __pyx_obj_5_cdec_Hypergraph *)__pyx_t_5);
+  __pyx_t_5 = 0;
 
-  /* "_cdec.pyx":68
+  /* "_cdec.pyx":112
  *             raise ParseFailed()
  *         cdef Hypergraph hg = Hypergraph()
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])             # <<<<<<<<<<<<<<
@@ -9916,7 +18602,7 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
  */
   __pyx_v_hg->hg = new Hypergraph((__pyx_v_observer.hypergraph[0]));
 
-  /* "_cdec.pyx":69
+  /* "_cdec.pyx":113
  *         cdef Hypergraph hg = Hypergraph()
  *         hg.hg = new hypergraph.Hypergraph(observer.hypergraph[0])
  *         return hg             # <<<<<<<<<<<<<<
@@ -9930,24 +18616,76 @@ static PyObject *__pyx_pf_5_cdec_7Decoder_6translate(struct __pyx_obj_5_cdec_Dec
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
-  __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_5);
   __Pyx_AddTraceback("_cdec.Decoder.translate", __pyx_clineno, __pyx_lineno, __pyx_filename);
   __pyx_r = NULL;
   __pyx_L0:;
-  __Pyx_XDECREF(__pyx_v_inp);
+  __Pyx_XDECREF(__pyx_v_input_str);
   __Pyx_XDECREF((PyObject *)__pyx_v_hg);
   __Pyx_XGIVEREF(__pyx_r);
   __Pyx_RefNannyFinishContext();
   return __pyx_r;
 }
 
-static PyObject *__pyx_tp_new_5_cdec_DenseVector(PyTypeObject *t, PyObject *a, PyObject *k) {
+/* "string.to_py":25
+ * 
+ * @cname("__pyx_convert_string_to_py_")
+ * cdef object __pyx_convert_string_to_py_(string& s):             # <<<<<<<<<<<<<<
+ *     return s.data()[:s.size()]
+ * 
+ */
+
+static PyObject *__pyx_convert_string_to_py_(const std::string &__pyx_v_s) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  PyObject *__pyx_t_1 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("__pyx_convert_string_to_py_", 0);
+
+  /* "string.to_py":26
+ * @cname("__pyx_convert_string_to_py_")
+ * cdef object __pyx_convert_string_to_py_(string& s):
+ *     return s.data()[:s.size()]             # <<<<<<<<<<<<<<
+ * 
+ * 
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = PyBytes_FromStringAndSize(__pyx_v_s.data() + 0, __pyx_v_s.size() - 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[6]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_1));
+  __pyx_r = ((PyObject *)__pyx_t_1);
+  __pyx_t_1 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_1);
+  __Pyx_AddTraceback("string.to_py.__pyx_convert_string_to_py_", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = 0;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+static PyObject *__pyx_tp_new_5_cdec_DenseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
 }
 
 static void __pyx_tp_dealloc_5_cdec_DenseVector(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_5_cdec_11DenseVector_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
+  }
   (*Py_TYPE(o)->tp_free)(o);
 }
 static PyObject *__pyx_sq_item_5_cdec_DenseVector(PyObject *o, Py_ssize_t i) {
@@ -9960,7 +18698,7 @@ static PyObject *__pyx_sq_item_5_cdec_DenseVector(PyObject *o, Py_ssize_t i) {
 
 static int __pyx_mp_ass_subscript_5_cdec_DenseVector(PyObject *o, PyObject *i, PyObject *v) {
   if (v) {
-    return __pyx_pw_5_cdec_11DenseVector_5__setitem__(o, i, v);
+    return __pyx_pw_5_cdec_11DenseVector_9__setitem__(o, i, v);
   }
   else {
     PyErr_Format(PyExc_NotImplementedError,
@@ -9970,8 +18708,8 @@ static int __pyx_mp_ass_subscript_5_cdec_DenseVector(PyObject *o, PyObject *i, P
 }
 
 static PyMethodDef __pyx_methods_5_cdec_DenseVector[] = {
-  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_5_cdec_11DenseVector_10dot, METH_O, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("tosparse"), (PyCFunction)__pyx_pw_5_cdec_11DenseVector_12tosparse, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_5_cdec_11DenseVector_14dot, METH_O, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("tosparse"), (PyCFunction)__pyx_pw_5_cdec_11DenseVector_16tosparse, METH_NOARGS, __Pyx_DOCSTR(0)},
   {0, 0, 0, 0}
 };
 
@@ -10034,7 +18772,7 @@ static PyNumberMethods __pyx_tp_as_number_DenseVector = {
 };
 
 static PySequenceMethods __pyx_tp_as_sequence_DenseVector = {
-  __pyx_pw_5_cdec_11DenseVector_1__len__, /*sq_length*/
+  __pyx_pw_5_cdec_11DenseVector_5__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
   __pyx_sq_item_5_cdec_DenseVector, /*sq_item*/
@@ -10047,8 +18785,8 @@ static PySequenceMethods __pyx_tp_as_sequence_DenseVector = {
 };
 
 static PyMappingMethods __pyx_tp_as_mapping_DenseVector = {
-  __pyx_pw_5_cdec_11DenseVector_1__len__, /*mp_length*/
-  __pyx_pw_5_cdec_11DenseVector_3__getitem__, /*mp_subscript*/
+  __pyx_pw_5_cdec_11DenseVector_5__len__, /*mp_length*/
+  __pyx_pw_5_cdec_11DenseVector_7__getitem__, /*mp_subscript*/
   __pyx_mp_ass_subscript_5_cdec_DenseVector, /*mp_ass_subscript*/
 };
 
@@ -10103,7 +18841,7 @@ static PyTypeObject __pyx_type_5_cdec_DenseVector = {
   0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_5_cdec_11DenseVector_7__iter__, /*tp_iter*/
+  __pyx_pw_5_cdec_11DenseVector_11__iter__, /*tp_iter*/
   0, /*tp_iternext*/
   __pyx_methods_5_cdec_DenseVector, /*tp_methods*/
   0, /*tp_members*/
@@ -10113,7 +18851,7 @@ static PyTypeObject __pyx_type_5_cdec_DenseVector = {
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_5_cdec_11DenseVector_1__init__, /*tp_init*/
   0, /*tp_alloc*/
   __pyx_tp_new_5_cdec_DenseVector, /*tp_new*/
   0, /*tp_free*/
@@ -10129,7 +18867,7 @@ static PyTypeObject __pyx_type_5_cdec_DenseVector = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SparseVector(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SparseVector(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -10140,7 +18878,7 @@ static void __pyx_tp_dealloc_5_cdec_SparseVector(PyObject *o) {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
-    __pyx_pw_5_cdec_12SparseVector_1__dealloc__(o);
+    __pyx_pw_5_cdec_12SparseVector_3__dealloc__(o);
     if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
@@ -10157,7 +18895,7 @@ static PyObject *__pyx_sq_item_5_cdec_SparseVector(PyObject *o, Py_ssize_t i) {
 
 static int __pyx_mp_ass_subscript_5_cdec_SparseVector(PyObject *o, PyObject *i, PyObject *v) {
   if (v) {
-    return __pyx_pw_5_cdec_12SparseVector_7__setitem__(o, i, v);
+    return __pyx_pw_5_cdec_12SparseVector_9__setitem__(o, i, v);
   }
   else {
     PyErr_Format(PyExc_NotImplementedError,
@@ -10167,22 +18905,22 @@ static int __pyx_mp_ass_subscript_5_cdec_SparseVector(PyObject *o, PyObject *i,
 }
 
 static PyMethodDef __pyx_methods_5_cdec_SparseVector[] = {
-  {__Pyx_NAMESTR("copy"), (PyCFunction)__pyx_pw_5_cdec_12SparseVector_3copy, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_5_cdec_12SparseVector_12dot, METH_O, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("copy"), (PyCFunction)__pyx_pw_5_cdec_12SparseVector_5copy, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("dot"), (PyCFunction)__pyx_pw_5_cdec_12SparseVector_14dot, METH_O, __Pyx_DOCSTR(0)},
   {0, 0, 0, 0}
 };
 
 static PyNumberMethods __pyx_tp_as_number_SparseVector = {
-  __pyx_pw_5_cdec_12SparseVector_30__add__, /*nb_add*/
-  __pyx_pw_5_cdec_12SparseVector_32__sub__, /*nb_subtract*/
-  __pyx_pw_5_cdec_12SparseVector_34__mul__, /*nb_multiply*/
+  __pyx_pw_5_cdec_12SparseVector_32__add__, /*nb_add*/
+  __pyx_pw_5_cdec_12SparseVector_34__sub__, /*nb_subtract*/
+  __pyx_pw_5_cdec_12SparseVector_36__mul__, /*nb_multiply*/
   #if PY_MAJOR_VERSION < 3
-  __pyx_pw_5_cdec_12SparseVector_36__div__, /*nb_divide*/
+  __pyx_pw_5_cdec_12SparseVector_38__div__, /*nb_divide*/
   #endif
   0, /*nb_remainder*/
   0, /*nb_divmod*/
   0, /*nb_power*/
-  __pyx_pw_5_cdec_12SparseVector_20__neg__, /*nb_negative*/
+  __pyx_pw_5_cdec_12SparseVector_22__neg__, /*nb_negative*/
   0, /*nb_positive*/
   0, /*nb_absolute*/
   0, /*nb_nonzero*/
@@ -10208,11 +18946,11 @@ static PyNumberMethods __pyx_tp_as_number_SparseVector = {
   #if PY_MAJOR_VERSION < 3
   0, /*nb_hex*/
   #endif
-  __pyx_pw_5_cdec_12SparseVector_22__iadd__, /*nb_inplace_add*/
-  __pyx_pw_5_cdec_12SparseVector_24__isub__, /*nb_inplace_subtract*/
-  __pyx_pw_5_cdec_12SparseVector_26__imul__, /*nb_inplace_multiply*/
+  __pyx_pw_5_cdec_12SparseVector_24__iadd__, /*nb_inplace_add*/
+  __pyx_pw_5_cdec_12SparseVector_26__isub__, /*nb_inplace_subtract*/
+  __pyx_pw_5_cdec_12SparseVector_28__imul__, /*nb_inplace_multiply*/
   #if PY_MAJOR_VERSION < 3
-  __pyx_pw_5_cdec_12SparseVector_28__idiv__, /*nb_inplace_divide*/
+  __pyx_pw_5_cdec_12SparseVector_30__idiv__, /*nb_inplace_divide*/
   #endif
   0, /*nb_inplace_remainder*/
   0, /*nb_inplace_power*/
@@ -10231,21 +18969,21 @@ static PyNumberMethods __pyx_tp_as_number_SparseVector = {
 };
 
 static PySequenceMethods __pyx_tp_as_sequence_SparseVector = {
-  __pyx_pw_5_cdec_12SparseVector_16__len__, /*sq_length*/
+  __pyx_pw_5_cdec_12SparseVector_18__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
   __pyx_sq_item_5_cdec_SparseVector, /*sq_item*/
   0, /*sq_slice*/
   0, /*sq_ass_item*/
   0, /*sq_ass_slice*/
-  __pyx_pw_5_cdec_12SparseVector_18__contains__, /*sq_contains*/
+  __pyx_pw_5_cdec_12SparseVector_20__contains__, /*sq_contains*/
   0, /*sq_inplace_concat*/
   0, /*sq_inplace_repeat*/
 };
 
 static PyMappingMethods __pyx_tp_as_mapping_SparseVector = {
-  __pyx_pw_5_cdec_12SparseVector_16__len__, /*mp_length*/
-  __pyx_pw_5_cdec_12SparseVector_5__getitem__, /*mp_subscript*/
+  __pyx_pw_5_cdec_12SparseVector_18__len__, /*mp_length*/
+  __pyx_pw_5_cdec_12SparseVector_7__getitem__, /*mp_subscript*/
   __pyx_mp_ass_subscript_5_cdec_SparseVector, /*mp_ass_subscript*/
 };
 
@@ -10298,9 +19036,9 @@ static PyTypeObject __pyx_type_5_cdec_SparseVector = {
   0, /*tp_doc*/
   0, /*tp_traverse*/
   0, /*tp_clear*/
-  __pyx_pw_5_cdec_12SparseVector_14__richcmp__, /*tp_richcompare*/
+  __pyx_pw_5_cdec_12SparseVector_16__richcmp__, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_5_cdec_12SparseVector_9__iter__, /*tp_iter*/
+  __pyx_pw_5_cdec_12SparseVector_11__iter__, /*tp_iter*/
   0, /*tp_iternext*/
   __pyx_methods_5_cdec_SparseVector, /*tp_methods*/
   0, /*tp_members*/
@@ -10310,7 +19048,7 @@ static PyTypeObject __pyx_type_5_cdec_SparseVector = {
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  0, /*tp_init*/
+  __pyx_pw_5_cdec_12SparseVector_1__init__, /*tp_init*/
   0, /*tp_alloc*/
   __pyx_tp_new_5_cdec_SparseVector, /*tp_new*/
   0, /*tp_free*/
@@ -10326,7 +19064,1214 @@ static PyTypeObject __pyx_type_5_cdec_SparseVector = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_Hypergraph(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_NT(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec_NT *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec_NT *)o);
+  p->cat = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_NT(PyObject *o) {
+  struct __pyx_obj_5_cdec_NT *p = (struct __pyx_obj_5_cdec_NT *)o;
+  Py_XDECREF(((PyObject *)p->cat));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec_NT(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec_NT *p = (struct __pyx_obj_5_cdec_NT *)o;
+  if (p->cat) {
+    e = (*v)(p->cat, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec_NT(PyObject *o) {
+  struct __pyx_obj_5_cdec_NT *p = (struct __pyx_obj_5_cdec_NT *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->cat);
+  p->cat = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyObject *__pyx_getprop_5_cdec_2NT_cat(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_2NT_3cat_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_2NT_cat(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_2NT_3cat_3__set__(o, v);
+  }
+  else {
+    return __pyx_pw_5_cdec_2NT_3cat_5__del__(o);
+  }
+}
+
+static PyObject *__pyx_getprop_5_cdec_2NT_ref(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_2NT_3ref_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_2NT_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_2NT_3ref_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_5_cdec_NT[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_NT[] = {
+  {(char *)"cat", __pyx_getprop_5_cdec_2NT_cat, __pyx_setprop_5_cdec_2NT_cat, 0, 0},
+  {(char *)"ref", __pyx_getprop_5_cdec_2NT_ref, __pyx_setprop_5_cdec_2NT_ref, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_NT = {
+  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_NT = {
+  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_NT = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_NT = {
+  #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_5_cdec_NT = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.NT"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_NT), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_NT, /*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_NT, /*tp_as_number*/
+  &__pyx_tp_as_sequence_NT, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_NT, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  __pyx_pw_5_cdec_2NT_3__str__, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_NT, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_5_cdec_NT, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec_NT, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_NT, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_NT, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  __pyx_pw_5_cdec_2NT_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec_NT, /*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_5_cdec_NTRef(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_NTRef(PyObject *o) {
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_5NTRef_ref(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5NTRef_3ref_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5NTRef_ref(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5NTRef_3ref_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_5_cdec_NTRef[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_NTRef[] = {
+  {(char *)"ref", __pyx_getprop_5_cdec_5NTRef_ref, __pyx_setprop_5_cdec_5NTRef_ref, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_NTRef = {
+  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_NTRef = {
+  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_NTRef = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_NTRef = {
+  #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_5_cdec_NTRef = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.NTRef"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_NTRef), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_NTRef, /*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_NTRef, /*tp_as_number*/
+  &__pyx_tp_as_sequence_NTRef, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_NTRef, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  __pyx_pw_5_cdec_5NTRef_3__str__, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_NTRef, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_NTRef, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_NTRef, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  __pyx_pw_5_cdec_5NTRef_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec_NTRef, /*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_5_cdec_TRule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_TRule(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_5_cdec_5TRule_3__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
+  }
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_arity(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_5arity_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_f(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_1f_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5TRule_f(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5TRule_1f_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_e(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_1e_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5TRule_e(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5TRule_1e_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_a(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_1a_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5TRule_a(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5TRule_1a_4__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_scores(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_6scores_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5TRule_scores(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5TRule_6scores_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyObject *__pyx_getprop_5_cdec_5TRule_lhs(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_5TRule_3lhs_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_5TRule_lhs(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_5TRule_3lhs_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_5_cdec_TRule[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_TRule[] = {
+  {(char *)"arity", __pyx_getprop_5_cdec_5TRule_arity, 0, 0, 0},
+  {(char *)"f", __pyx_getprop_5_cdec_5TRule_f, __pyx_setprop_5_cdec_5TRule_f, 0, 0},
+  {(char *)"e", __pyx_getprop_5_cdec_5TRule_e, __pyx_setprop_5_cdec_5TRule_e, 0, 0},
+  {(char *)"a", __pyx_getprop_5_cdec_5TRule_a, __pyx_setprop_5_cdec_5TRule_a, 0, 0},
+  {(char *)"scores", __pyx_getprop_5_cdec_5TRule_scores, __pyx_setprop_5_cdec_5TRule_scores, 0, 0},
+  {(char *)"lhs", __pyx_getprop_5_cdec_5TRule_lhs, __pyx_setprop_5_cdec_5TRule_lhs, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_TRule = {
+  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_TRule = {
+  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_TRule = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_TRule = {
+  #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_5_cdec_TRule = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.TRule"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_TRule), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_TRule, /*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_TRule, /*tp_as_number*/
+  &__pyx_tp_as_sequence_TRule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_TRule, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  __pyx_pw_5_cdec_5TRule_5__str__, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_TRule, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_TRule, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_TRule, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  __pyx_pw_5_cdec_5TRule_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec_TRule, /*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_5_cdec_MRule(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_5_cdec_TRule(t, a, k);
+  if (!o) return 0;
+  return o;
+}
+
+static PyMethodDef __pyx_methods_5_cdec_MRule[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_MRule = {
+  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_MRule = {
+  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_MRule = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_MRule = {
+  #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_5_cdec_MRule = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.MRule"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_MRule), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_TRule, /*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_MRule, /*tp_as_number*/
+  &__pyx_tp_as_sequence_MRule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_MRule, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_5_cdec_5TRule_5__str__, /*tp_str*/
+  #else
+  0, /*tp_str*/
+  #endif
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_MRule, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_MRule, /*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*/
+  __pyx_pw_5_cdec_5MRule_1__init__, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec_MRule, /*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_5_cdec_Grammar(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_Grammar(PyObject *o) {
+  {
+    PyObject *etype, *eval, *etb;
+    PyErr_Fetch(&etype, &eval, &etb);
+    ++Py_REFCNT(o);
+    __pyx_pw_5_cdec_7Grammar_1__dealloc__(o);
+    if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
+    --Py_REFCNT(o);
+    PyErr_Restore(etype, eval, etb);
+  }
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_7Grammar_name(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_7Grammar_4name_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_7Grammar_name(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_7Grammar_4name_3__set__(o, v);
+  }
+  else {
+    PyErr_SetString(PyExc_NotImplementedError, "__del__");
+    return -1;
+  }
+}
+
+static PyMethodDef __pyx_methods_5_cdec_Grammar[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_Grammar[] = {
+  {(char *)"name", __pyx_getprop_5_cdec_7Grammar_name, __pyx_setprop_5_cdec_7Grammar_name, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_Grammar = {
+  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_Grammar = {
+  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_Grammar = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_Grammar = {
+  #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_5_cdec_Grammar = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.Grammar"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_Grammar), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_Grammar, /*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_Grammar, /*tp_as_number*/
+  &__pyx_tp_as_sequence_Grammar, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_Grammar, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_Grammar, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  __pyx_pw_5_cdec_7Grammar_3__iter__, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_Grammar, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_Grammar, /*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_5_cdec_Grammar, /*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_5_cdec_TextGrammar(PyTypeObject *t, PyObject *a, PyObject *k) {
+  PyObject *o = __pyx_tp_new_5_cdec_Grammar(t, a, k);
+  if (!o) return 0;
+  if (__pyx_pw_5_cdec_11TextGrammar_1__cinit__(o, a, k) < 0) {
+    Py_DECREF(o); o = 0;
+  }
+  return o;
+}
+
+static PyMethodDef __pyx_methods_5_cdec_TextGrammar[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_TextGrammar = {
+  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_TextGrammar = {
+  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_TextGrammar = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_TextGrammar = {
+  #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_5_cdec_TextGrammar = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.TextGrammar"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_TextGrammar), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_Grammar, /*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_TextGrammar, /*tp_as_number*/
+  &__pyx_tp_as_sequence_TextGrammar, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_TextGrammar, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_TextGrammar, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  #if CYTHON_COMPILING_IN_PYPY
+  __pyx_pw_5_cdec_7Grammar_3__iter__, /*tp_iter*/
+  #else
+  0, /*tp_iter*/
+  #endif
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_TextGrammar, /*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_5_cdec_TextGrammar, /*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_5_cdec_Hypergraph(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -10345,22 +20290,47 @@ static void __pyx_tp_dealloc_5_cdec_Hypergraph(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_10Hypergraph_5edges_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_nodes(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_10Hypergraph_5nodes_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_goal(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_10Hypergraph_4goal_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_10Hypergraph_npaths(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_10Hypergraph_6npaths_1__get__(o);
+}
+
 static PyMethodDef __pyx_methods_5_cdec_Hypergraph[] = {
   {__Pyx_NAMESTR("viterbi"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_3viterbi, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("viterbi_tree"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_5viterbi_tree, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("viterbi_source_tree"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_7viterbi_source_tree, METH_NOARGS, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("viterbi_features"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_9viterbi_features, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("viterbi_trees"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_5viterbi_trees, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("viterbi_features"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_7viterbi_features, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("viterbi_joshua"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_9viterbi_joshua, METH_NOARGS, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("kbest"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_11kbest, METH_O, __Pyx_DOCSTR(0)},
-  {__Pyx_NAMESTR("kbest_tree"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_14kbest_tree, METH_O, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("kbest_trees"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_14kbest_trees, METH_O, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("kbest_features"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_17kbest_features, METH_O, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("sample"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_20sample, METH_O, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("intersect"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_23intersect, METH_O, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("prune"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_25prune, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("lattice"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_27lattice, METH_NOARGS, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("reweight"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_29reweight, METH_O, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("inside_outside"), (PyCFunction)__pyx_pw_5_cdec_10Hypergraph_31inside_outside, METH_NOARGS, __Pyx_DOCSTR(0)},
   {0, 0, 0, 0}
 };
 
+static struct PyGetSetDef __pyx_getsets_5_cdec_Hypergraph[] = {
+  {(char *)"edges", __pyx_getprop_5_cdec_10Hypergraph_edges, 0, 0, 0},
+  {(char *)"nodes", __pyx_getprop_5_cdec_10Hypergraph_nodes, 0, 0, 0},
+  {(char *)"goal", __pyx_getprop_5_cdec_10Hypergraph_goal, 0, 0, 0},
+  {(char *)"npaths", __pyx_getprop_5_cdec_10Hypergraph_npaths, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
 static PyNumberMethods __pyx_tp_as_number_Hypergraph = {
   0, /*nb_add*/
   0, /*nb_subtract*/
@@ -10493,7 +20463,7 @@ static PyTypeObject __pyx_type_5_cdec_Hypergraph = {
   0, /*tp_iternext*/
   __pyx_methods_5_cdec_Hypergraph, /*tp_methods*/
   0, /*tp_members*/
-  0, /*tp_getset*/
+  __pyx_getsets_5_cdec_Hypergraph, /*tp_getset*/
   0, /*tp_base*/
   0, /*tp_dict*/
   0, /*tp_descr_get*/
@@ -10514,10 +20484,445 @@ static PyTypeObject __pyx_type_5_cdec_Hypergraph = {
   0, /*tp_version_tag*/
   #endif
 };
+static struct __pyx_vtabstruct_5_cdec_HypergraphEdge __pyx_vtable_5_cdec_HypergraphEdge;
+
+static PyObject *__pyx_tp_new_5_cdec_HypergraphEdge(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec_HypergraphEdge *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec_HypergraphEdge *)o);
+  p->__pyx_vtab = __pyx_vtabptr_5_cdec_HypergraphEdge;
+  p->trule = ((struct __pyx_obj_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_HypergraphEdge(PyObject *o) {
+  struct __pyx_obj_5_cdec_HypergraphEdge *p = (struct __pyx_obj_5_cdec_HypergraphEdge *)o;
+  Py_XDECREF(((PyObject *)p->trule));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec_HypergraphEdge(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec_HypergraphEdge *p = (struct __pyx_obj_5_cdec_HypergraphEdge *)o;
+  if (p->trule) {
+    e = (*v)(((PyObject*)p->trule), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec_HypergraphEdge(PyObject *o) {
+  struct __pyx_obj_5_cdec_HypergraphEdge *p = (struct __pyx_obj_5_cdec_HypergraphEdge *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->trule);
+  p->trule = ((struct __pyx_obj_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_head_node(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_9head_node_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_tail_nodes(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_10tail_nodes_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_span(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_4span_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_feature_values(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_14feature_values_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_prob(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_4prob_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphEdge_trule(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphEdge_5trule_1__get__(o);
+}
+
+static int __pyx_setprop_5_cdec_14HypergraphEdge_trule(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
+  if (v) {
+    return __pyx_pw_5_cdec_14HypergraphEdge_5trule_3__set__(o, v);
+  }
+  else {
+    return __pyx_pw_5_cdec_14HypergraphEdge_5trule_5__del__(o);
+  }
+}
+
+static PyMethodDef __pyx_methods_5_cdec_HypergraphEdge[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_HypergraphEdge[] = {
+  {(char *)"head_node", __pyx_getprop_5_cdec_14HypergraphEdge_head_node, 0, 0, 0},
+  {(char *)"tail_nodes", __pyx_getprop_5_cdec_14HypergraphEdge_tail_nodes, 0, 0, 0},
+  {(char *)"span", __pyx_getprop_5_cdec_14HypergraphEdge_span, 0, 0, 0},
+  {(char *)"feature_values", __pyx_getprop_5_cdec_14HypergraphEdge_feature_values, 0, 0, 0},
+  {(char *)"prob", __pyx_getprop_5_cdec_14HypergraphEdge_prob, 0, 0, 0},
+  {(char *)"trule", __pyx_getprop_5_cdec_14HypergraphEdge_trule, __pyx_setprop_5_cdec_14HypergraphEdge_trule, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_HypergraphEdge = {
+  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_HypergraphEdge = {
+  __pyx_pw_5_cdec_14HypergraphEdge_1__len__, /*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_HypergraphEdge = {
+  __pyx_pw_5_cdec_14HypergraphEdge_1__len__, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_HypergraphEdge = {
+  #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_5_cdec_HypergraphEdge = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.HypergraphEdge"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_HypergraphEdge), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_HypergraphEdge, /*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_HypergraphEdge, /*tp_as_number*/
+  &__pyx_tp_as_sequence_HypergraphEdge, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_HypergraphEdge, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_HypergraphEdge, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_5_cdec_HypergraphEdge, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec_HypergraphEdge, /*tp_clear*/
+  __pyx_pw_5_cdec_14HypergraphEdge_3__richcmp__, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_HypergraphEdge, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_HypergraphEdge, /*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_5_cdec_HypergraphEdge, /*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 struct __pyx_vtabstruct_5_cdec_HypergraphNode __pyx_vtable_5_cdec_HypergraphNode;
+
+static PyObject *__pyx_tp_new_5_cdec_HypergraphNode(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec_HypergraphNode *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec_HypergraphNode *)o);
+  p->__pyx_vtab = __pyx_vtabptr_5_cdec_HypergraphNode;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_HypergraphNode(PyObject *o) {
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_in_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphNode_8in_edges_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_out_edges(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphNode_9out_edges_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_span(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphNode_4span_1__get__(o);
+}
+
+static PyObject *__pyx_getprop_5_cdec_14HypergraphNode_cat(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_14HypergraphNode_3cat_1__get__(o);
+}
+
+static PyMethodDef __pyx_methods_5_cdec_HypergraphNode[] = {
+  {0, 0, 0, 0}
+};
+
+static struct PyGetSetDef __pyx_getsets_5_cdec_HypergraphNode[] = {
+  {(char *)"in_edges", __pyx_getprop_5_cdec_14HypergraphNode_in_edges, 0, 0, 0},
+  {(char *)"out_edges", __pyx_getprop_5_cdec_14HypergraphNode_out_edges, 0, 0, 0},
+  {(char *)"span", __pyx_getprop_5_cdec_14HypergraphNode_span, 0, 0, 0},
+  {(char *)"cat", __pyx_getprop_5_cdec_14HypergraphNode_cat, 0, 0, 0},
+  {0, 0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_HypergraphNode = {
+  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_HypergraphNode = {
+  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_HypergraphNode = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_HypergraphNode = {
+  #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_5_cdec_HypergraphNode = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.HypergraphNode"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_HypergraphNode), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_HypergraphNode, /*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_HypergraphNode, /*tp_as_number*/
+  &__pyx_tp_as_sequence_HypergraphNode, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_HypergraphNode, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_HypergraphNode, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE, /*tp_flags*/
+  0, /*tp_doc*/
+  0, /*tp_traverse*/
+  0, /*tp_clear*/
+  __pyx_pw_5_cdec_14HypergraphNode_1__richcmp__, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_HypergraphNode, /*tp_methods*/
+  0, /*tp_members*/
+  __pyx_getsets_5_cdec_HypergraphNode, /*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_5_cdec_HypergraphNode, /*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_5_cdec_Lattice(PyTypeObject *t, PyObject *a, PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
+  if (__pyx_pw_5_cdec_7Lattice_1__cinit__(o, a, k) < 0) {
+    Py_DECREF(o); o = 0;
+  }
   return o;
 }
 
@@ -10526,7 +20931,7 @@ static void __pyx_tp_dealloc_5_cdec_Lattice(PyObject *o) {
     PyObject *etype, *eval, *etb;
     PyErr_Fetch(&etype, &eval, &etb);
     ++Py_REFCNT(o);
-    __pyx_pw_5_cdec_7Lattice_14__dealloc__(o);
+    __pyx_pw_5_cdec_7Lattice_3__dealloc__(o);
     if (PyErr_Occurred()) PyErr_WriteUnraisable(o);
     --Py_REFCNT(o);
     PyErr_Restore(etype, eval, etb);
@@ -10543,7 +20948,7 @@ static PyObject *__pyx_sq_item_5_cdec_Lattice(PyObject *o, Py_ssize_t i) {
 
 static int __pyx_mp_ass_subscript_5_cdec_Lattice(PyObject *o, PyObject *i, PyObject *v) {
   if (v) {
-    return __pyx_pw_5_cdec_7Lattice_5__setitem__(o, i, v);
+    return __pyx_pw_5_cdec_7Lattice_7__setitem__(o, i, v);
   }
   else {
     PyErr_Format(PyExc_NotImplementedError,
@@ -10616,7 +21021,7 @@ static PyNumberMethods __pyx_tp_as_number_Lattice = {
 };
 
 static PySequenceMethods __pyx_tp_as_sequence_Lattice = {
-  __pyx_pw_5_cdec_7Lattice_7__len__, /*sq_length*/
+  __pyx_pw_5_cdec_7Lattice_9__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
   __pyx_sq_item_5_cdec_Lattice, /*sq_item*/
@@ -10629,8 +21034,8 @@ static PySequenceMethods __pyx_tp_as_sequence_Lattice = {
 };
 
 static PyMappingMethods __pyx_tp_as_mapping_Lattice = {
-  __pyx_pw_5_cdec_7Lattice_7__len__, /*mp_length*/
-  __pyx_pw_5_cdec_7Lattice_3__getitem__, /*mp_subscript*/
+  __pyx_pw_5_cdec_7Lattice_9__len__, /*mp_length*/
+  __pyx_pw_5_cdec_7Lattice_5__getitem__, /*mp_subscript*/
   __pyx_mp_ass_subscript_5_cdec_Lattice, /*mp_ass_subscript*/
 };
 
@@ -10675,7 +21080,7 @@ static PyTypeObject __pyx_type_5_cdec_Lattice = {
   &__pyx_tp_as_mapping_Lattice, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
-  __pyx_pw_5_cdec_7Lattice_9__str__, /*tp_str*/
+  __pyx_pw_5_cdec_7Lattice_11__str__, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
   &__pyx_tp_as_buffer_Lattice, /*tp_as_buffer*/
@@ -10685,7 +21090,7 @@ static PyTypeObject __pyx_type_5_cdec_Lattice = {
   0, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
-  __pyx_pw_5_cdec_7Lattice_11__iter__, /*tp_iter*/
+  __pyx_pw_5_cdec_7Lattice_13__iter__, /*tp_iter*/
   0, /*tp_iternext*/
   __pyx_methods_5_cdec_Lattice, /*tp_methods*/
   0, /*tp_members*/
@@ -10695,7 +21100,7 @@ static PyTypeObject __pyx_type_5_cdec_Lattice = {
   0, /*tp_descr_get*/
   0, /*tp_descr_set*/
   0, /*tp_dictoffset*/
-  __pyx_pw_5_cdec_7Lattice_1__init__, /*tp_init*/
+  0, /*tp_init*/
   0, /*tp_alloc*/
   __pyx_tp_new_5_cdec_Lattice, /*tp_new*/
   0, /*tp_free*/
@@ -10711,7 +21116,7 @@ static PyTypeObject __pyx_type_5_cdec_Lattice = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_Candidate(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_Candidate(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -10721,19 +21126,19 @@ static void __pyx_tp_dealloc_5_cdec_Candidate(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_words(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_words(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_5words_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_fmap(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_fmap(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_4fmap_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_9Candidate_score(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_9Candidate_score(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_9Candidate_5score_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_9Candidate_score(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_9Candidate_score(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_9Candidate_5score_3__set__(o, v);
   }
@@ -10908,7 +21313,7 @@ static PyTypeObject __pyx_type_5_cdec_Candidate = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SufficientStats(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SufficientStats(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -10926,12 +21331,19 @@ static void __pyx_tp_dealloc_5_cdec_SufficientStats(PyObject *o) {
   }
   (*Py_TYPE(o)->tp_free)(o);
 }
+static PyObject *__pyx_sq_item_5_cdec_SufficientStats(PyObject *o, Py_ssize_t i) {
+  PyObject *r;
+  PyObject *x = PyInt_FromSsize_t(i); if(!x) return 0;
+  r = Py_TYPE(o)->tp_as_mapping->mp_subscript(o, x);
+  Py_DECREF(x);
+  return r;
+}
 
-static PyObject *__pyx_getprop_5_cdec_15SufficientStats_score(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_15SufficientStats_score(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_15SufficientStats_5score_1__get__(o);
 }
 
-static PyObject *__pyx_getprop_5_cdec_15SufficientStats_detail(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_15SufficientStats_detail(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_15SufficientStats_6detail_1__get__(o);
 }
 
@@ -10946,7 +21358,7 @@ static struct PyGetSetDef __pyx_getsets_5_cdec_SufficientStats[] = {
 };
 
 static PyNumberMethods __pyx_tp_as_number_SufficientStats = {
-  __pyx_pw_5_cdec_15SufficientStats_10__add__, /*nb_add*/
+  __pyx_pw_5_cdec_15SufficientStats_12__add__, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
   #if PY_MAJOR_VERSION < 3
@@ -10981,7 +21393,7 @@ static PyNumberMethods __pyx_tp_as_number_SufficientStats = {
   #if PY_MAJOR_VERSION < 3
   0, /*nb_hex*/
   #endif
-  __pyx_pw_5_cdec_15SufficientStats_8__iadd__, /*nb_inplace_add*/
+  __pyx_pw_5_cdec_15SufficientStats_10__iadd__, /*nb_inplace_add*/
   0, /*nb_inplace_subtract*/
   0, /*nb_inplace_multiply*/
   #if PY_MAJOR_VERSION < 3
@@ -11007,7 +21419,7 @@ static PySequenceMethods __pyx_tp_as_sequence_SufficientStats = {
   __pyx_pw_5_cdec_15SufficientStats_3__len__, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
-  0, /*sq_item*/
+  __pyx_sq_item_5_cdec_SufficientStats, /*sq_item*/
   0, /*sq_slice*/
   0, /*sq_ass_item*/
   0, /*sq_ass_slice*/
@@ -11018,7 +21430,7 @@ static PySequenceMethods __pyx_tp_as_sequence_SufficientStats = {
 
 static PyMappingMethods __pyx_tp_as_mapping_SufficientStats = {
   __pyx_pw_5_cdec_15SufficientStats_3__len__, /*mp_length*/
-  0, /*mp_subscript*/
+  __pyx_pw_5_cdec_15SufficientStats_8__getitem__, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
@@ -11287,7 +21699,7 @@ static PyTypeObject __pyx_type_5_cdec_CandidateSet = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec_SegmentEvaluator(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec_SegmentEvaluator(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
   return o;
@@ -11646,6 +22058,202 @@ static PyTypeObject __pyx_type_5_cdec_Scorer = {
   #endif
 };
 
+static PyObject *__pyx_tp_new_5_cdec_Metric(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec_Metric *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec_Metric *)o);
+  p->scorer = ((struct __pyx_obj_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
+  if (__pyx_pw_5_cdec_6Metric_1__cinit__(o, __pyx_empty_tuple, NULL) < 0) {
+    Py_DECREF(o); o = 0;
+  }
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec_Metric(PyObject *o) {
+  struct __pyx_obj_5_cdec_Metric *p = (struct __pyx_obj_5_cdec_Metric *)o;
+  Py_XDECREF(((PyObject *)p->scorer));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec_Metric(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec_Metric *p = (struct __pyx_obj_5_cdec_Metric *)o;
+  if (p->scorer) {
+    e = (*v)(((PyObject*)p->scorer), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec_Metric(PyObject *o) {
+  struct __pyx_obj_5_cdec_Metric *p = (struct __pyx_obj_5_cdec_Metric *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->scorer);
+  p->scorer = ((struct __pyx_obj_5_cdec_Scorer *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec_Metric[] = {
+  {__Pyx_NAMESTR("score"), (PyCFunction)__pyx_pw_5_cdec_6Metric_5score, METH_NOARGS, __Pyx_DOCSTR(0)},
+  {__Pyx_NAMESTR("evaluate"), (PyCFunction)__pyx_pw_5_cdec_6Metric_7evaluate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number_Metric = {
+  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_Metric = {
+  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_Metric = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer_Metric = {
+  #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_5_cdec_Metric = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.Metric"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec_Metric), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec_Metric, /*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_Metric, /*tp_as_number*/
+  &__pyx_tp_as_sequence_Metric, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping_Metric, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  __pyx_pw_5_cdec_6Metric_3__call__, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer_Metric, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_5_cdec_Metric, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec_Metric, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec_Metric, /*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_5_cdec_Metric, /*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_5_cdec_Decoder(PyTypeObject *t, PyObject *a, PyObject *k) {
   struct __pyx_obj_5_cdec_Decoder *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
@@ -11691,11 +22299,11 @@ static int __pyx_tp_clear_5_cdec_Decoder(PyObject *o) {
   return 0;
 }
 
-static PyObject *__pyx_getprop_5_cdec_7Decoder_weights(PyObject *o, void *x) {
+static PyObject *__pyx_getprop_5_cdec_7Decoder_weights(PyObject *o, CYTHON_UNUSED void *x) {
   return __pyx_pw_5_cdec_7Decoder_7weights_1__get__(o);
 }
 
-static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, void *x) {
+static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, CYTHON_UNUSED void *x) {
   if (v) {
     return __pyx_pw_5_cdec_7Decoder_7weights_3__set__(o, v);
   }
@@ -11705,6 +22313,10 @@ static int __pyx_setprop_5_cdec_7Decoder_weights(PyObject *o, PyObject *v, void
   }
 }
 
+static PyObject *__pyx_getprop_5_cdec_7Decoder_formalism(PyObject *o, CYTHON_UNUSED void *x) {
+  return __pyx_pw_5_cdec_7Decoder_9formalism_1__get__(o);
+}
+
 static PyMethodDef __pyx_methods_5_cdec_Decoder[] = {
   {__Pyx_NAMESTR("read_weights"), (PyCFunction)__pyx_pw_5_cdec_7Decoder_5read_weights, METH_O, __Pyx_DOCSTR(0)},
   {__Pyx_NAMESTR("translate"), (PyCFunction)__pyx_pw_5_cdec_7Decoder_7translate, METH_VARARGS|METH_KEYWORDS, __Pyx_DOCSTR(0)},
@@ -11713,6 +22325,7 @@ static PyMethodDef __pyx_methods_5_cdec_Decoder[] = {
 
 static struct PyGetSetDef __pyx_getsets_5_cdec_Decoder[] = {
   {(char *)"weights", __pyx_getprop_5_cdec_7Decoder_weights, __pyx_setprop_5_cdec_7Decoder_weights, 0, 0},
+  {(char *)"formalism", __pyx_getprop_5_cdec_7Decoder_formalism, 0, 0, 0},
   {0, 0, 0, 0, 0}
 };
 
@@ -11870,7 +22483,7 @@ static PyTypeObject __pyx_type_5_cdec_Decoder = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct____iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct____iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -12061,7 +22674,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct____iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_1___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
   struct __pyx_obj_5_cdec___pyx_scope_struct_1___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
@@ -12252,60 +22865,1238 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_1___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_2_kbest(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_2__phrase(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *)o);
+  p->__pyx_v_phrase = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *)o;
+  Py_XDECREF(p->__pyx_v_phrase);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_2__phrase(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *)o;
+  if (p->__pyx_v_phrase) {
+    e = (*v)(p->__pyx_v_phrase, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_2__phrase(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_phrase);
+  p->__pyx_v_phrase = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_2__phrase[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_2__phrase = {
+  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_2__phrase = {
+  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_2__phrase = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_2__phrase = {
+  #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_5_cdec___pyx_scope_struct_2__phrase = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_2__phrase"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_2__phrase, /*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_2__phrase, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_2__phrase, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_2__phrase, /*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_2__phrase, /*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_5_cdec___pyx_scope_struct_2__phrase, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_2__phrase, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_2__phrase, /*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_5_cdec___pyx_scope_struct_2__phrase, /*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_5_cdec___pyx_scope_struct_3_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_w = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_outer_scope));
+  Py_XDECREF(p->__pyx_v_w);
+  Py_XDECREF(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_w) {
+    e = (*v)(p->__pyx_v_w, 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_5_cdec___pyx_scope_struct_3_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_2__phrase *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_w);
+  p->__pyx_v_w = 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_5_cdec___pyx_scope_struct_3_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_3_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_3_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_3_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_3_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_5_cdec___pyx_scope_struct_3_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_3_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_3_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_3_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_3_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_3_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_3_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_3_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_5_cdec___pyx_scope_struct_3_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_3_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_3_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_5_cdec___pyx_scope_struct_3_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_5_cdec___pyx_scope_struct_4___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_4___get__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *)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_5_cdec___pyx_scope_struct_4___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_4___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_4___get__ = {
+  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_4___get__ = {
+  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_4___get__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_4___get__ = {
+  #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_5_cdec___pyx_scope_struct_4___get__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_4___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_4___get__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_4___get__, /*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_4___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_4___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_4___get__, /*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_4___get__, /*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_5_cdec___pyx_scope_struct_4___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_4___get__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_4___get__, /*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_5_cdec___pyx_scope_struct_4___get__, /*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_5_cdec___pyx_scope_struct_5___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_5___str__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_5___str__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5___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_5_cdec___pyx_scope_struct_5___str__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_5___str__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_5___str__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_5___str__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_5___str__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_5___str__ = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5___str__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_5___str__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_5___str__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_5___str__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_5___str__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_5___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_5___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_5_cdec___pyx_scope_struct_5___str__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_5___str__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_5___str__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_5___str__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_6_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_feat = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_outer_scope));
+  Py_XDECREF(p->__pyx_v_feat);
+  Py_XDECREF(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_feat) {
+    e = (*v)(p->__pyx_v_feat, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_6_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_5___str__ *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_feat);
+  p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_6_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_6_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_6_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_6_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_6_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_5_cdec___pyx_scope_struct_6_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_6_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_6_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_6_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_6_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_6_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_6_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_6_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_5_cdec___pyx_scope_struct_6_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_6_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_6_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_5_cdec___pyx_scope_struct_6_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_5_cdec___pyx_scope_struct_7___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *)o);
+  p->__pyx_v_self = 0;
+  p->__pyx_v_trule = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  Py_XDECREF(((PyObject *)p->__pyx_v_trule));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_7___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  if (p->__pyx_v_trule) {
+    e = (*v)(((PyObject*)p->__pyx_v_trule), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_7___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Grammar *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_trule);
+  p->__pyx_v_trule = ((struct __pyx_obj_5_cdec_TRule *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_7___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_7___iter__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_7___iter__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_7___iter__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_7___iter__ = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7___iter__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_7___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_7___iter__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_7___iter__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_7___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_7___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_7___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_7___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_5_cdec___pyx_scope_struct_7___iter__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_7___iter__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_7___iter__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_7___iter__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_8_kbest(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *)o);
   p->__pyx_v_self = 0;
-  p->__pyx_v_sentence = 0;
   p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_2_kbest(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
-  Py_XDECREF(((PyObject *)p->__pyx_v_sentence));
   Py_XDECREF(p->__pyx_v_size);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_2_kbest(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_8_kbest(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  if (p->__pyx_v_sentence) {
-    e = (*v)(p->__pyx_v_sentence, a); if (e) return e;
-  }
   if (p->__pyx_v_size) {
     e = (*v)(p->__pyx_v_size, a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_5_cdec___pyx_scope_struct_2_kbest(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_8_kbest(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_sentence);
-  p->__pyx_v_sentence = ((PyObject*)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_size);
   p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_2_kbest[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_8_kbest[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_2_kbest = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_8_kbest = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -12363,7 +24154,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_2_kbest = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_2_kbest = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_8_kbest = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -12376,13 +24167,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_2_kbest = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_2_kbest = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_8_kbest = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_2_kbest = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_8_kbest = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -12403,12 +24194,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_2_kbest = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_2_kbest = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_kbest = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_2_kbest"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_2_kbest), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_8_kbest"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_8_kbest), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_2_kbest, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_8_kbest, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -12418,24 +24209,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_2_kbest = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_2_kbest, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_2_kbest, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_2_kbest, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_8_kbest, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_8_kbest, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_8_kbest, /*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_2_kbest, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_8_kbest, /*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_5_cdec___pyx_scope_struct_2_kbest, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_2_kbest, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_8_kbest, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_8_kbest, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_2_kbest, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_8_kbest, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -12445,7 +24236,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_2_kbest = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_2_kbest, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_8_kbest, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -12459,60 +24250,68 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_2_kbest = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_3_kbest_tree(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_9_kbest_trees(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *)o);
+  p->__pyx_v_e_tree = 0;
+  p->__pyx_v_f_tree = 0;
   p->__pyx_v_self = 0;
   p->__pyx_v_size = 0;
-  p->__pyx_v_tree = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_3_kbest_tree(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_e_tree));
+  Py_XDECREF(((PyObject *)p->__pyx_v_f_tree));
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   Py_XDECREF(p->__pyx_v_size);
-  Py_XDECREF(((PyObject *)p->__pyx_v_tree));
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_3_kbest_tree(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
+  if (p->__pyx_v_e_tree) {
+    e = (*v)(p->__pyx_v_e_tree, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_tree) {
+    e = (*v)(p->__pyx_v_f_tree, a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   if (p->__pyx_v_size) {
     e = (*v)(p->__pyx_v_size, a); if (e) return e;
   }
-  if (p->__pyx_v_tree) {
-    e = (*v)(p->__pyx_v_tree, a); if (e) return e;
-  }
   return 0;
 }
 
-static int __pyx_tp_clear_5_cdec___pyx_scope_struct_3_kbest_tree(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_9_kbest_trees(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees *)o;
   PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_e_tree);
+  p->__pyx_v_e_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_tree);
+  p->__pyx_v_f_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_size);
   p->__pyx_v_size = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_tree);
-  p->__pyx_v_tree = ((PyObject*)Py_None); Py_INCREF(Py_None);
-  Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_3_kbest_tree[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_9_kbest_trees[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_3_kbest_tree = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_9_kbest_trees = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -12570,7 +24369,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_3_kbest_tree = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_3_kbest_tree = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_9_kbest_trees = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -12583,13 +24382,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_3_kbest_tree =
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_3_kbest_tree = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_9_kbest_trees = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_3_kbest_tree = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_9_kbest_trees = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -12610,12 +24409,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_3_kbest_tree = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_3_kbest_tree = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_3_kbest_tree"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_3_kbest_tree), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_9_kbest_trees"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_9_kbest_trees), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_3_kbest_tree, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -12625,24 +24424,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_3_kbest_tree = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_3_kbest_tree, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_3_kbest_tree, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_3_kbest_tree, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_9_kbest_trees, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_9_kbest_trees, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_9_kbest_trees, /*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_3_kbest_tree, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_9_kbest_trees, /*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_5_cdec___pyx_scope_struct_3_kbest_tree, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_3_kbest_tree, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_3_kbest_tree, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -12652,7 +24451,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_3_kbest_tree = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_3_kbest_tree, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_9_kbest_trees, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -12666,28 +24465,28 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_3_kbest_tree = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_4_kbest_features(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_10_kbest_features(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)o);
   p->__pyx_v_fmap = 0;
   p->__pyx_v_self = 0;
   p->__pyx_v_size = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_4_kbest_features(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_fmap));
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   Py_XDECREF(p->__pyx_v_size);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_4_kbest_features(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)o;
   if (p->__pyx_v_fmap) {
     e = (*v)(((PyObject*)p->__pyx_v_fmap), a); if (e) return e;
   }
@@ -12700,8 +24499,8 @@ static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_4_kbest_features(PyObject
   return 0;
 }
 
-static int __pyx_tp_clear_5_cdec___pyx_scope_struct_4_kbest_features(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_10_kbest_features(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_fmap);
   p->__pyx_v_fmap = ((struct __pyx_obj_5_cdec_SparseVector *)Py_None); Py_INCREF(Py_None);
@@ -12715,11 +24514,202 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_4_kbest_features(PyObject *o
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_4_kbest_features[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_10_kbest_features[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_10_kbest_features = {
+  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_10_kbest_features = {
+  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_10_kbest_features = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_10_kbest_features = {
+  #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_5_cdec___pyx_scope_struct_10_kbest_features = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_10_kbest_features"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_10_kbest_features), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_10_kbest_features, /*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_10_kbest_features, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_10_kbest_features, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_10_kbest_features, /*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_10_kbest_features, /*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_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_10_kbest_features, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_10_kbest_features, /*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_5_cdec___pyx_scope_struct_10_kbest_features, /*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_5_cdec___pyx_scope_struct_11_sample(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_11_sample(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_11_sample(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)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_5_cdec___pyx_scope_struct_11_sample(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_11_sample[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_4_kbest_features = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_11_sample = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -12777,7 +24767,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_4_kbest_features =
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_4_kbest_features = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_11_sample = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -12790,13 +24780,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_4_kbest_feature
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_4_kbest_features = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_11_sample = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_4_kbest_features = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_11_sample = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -12817,12 +24807,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_4_kbest_features = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_4_kbest_features = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_11_sample = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_4_kbest_features"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_4_kbest_features), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_11_sample"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_11_sample), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_4_kbest_features, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_11_sample, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -12832,24 +24822,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_4_kbest_features = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_4_kbest_features, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_4_kbest_features, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_4_kbest_features, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_11_sample, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_11_sample, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_11_sample, /*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_4_kbest_features, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_11_sample, /*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_5_cdec___pyx_scope_struct_4_kbest_features, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_4_kbest_features, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_11_sample, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_11_sample, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_4_kbest_features, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_11_sample, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -12859,7 +24849,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_4_kbest_features = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_4_kbest_features, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_11_sample, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -12873,52 +24863,808 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_4_kbest_features = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_5_sample(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_12___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *)o);
   p->__pyx_v_self = 0;
-  p->__pyx_v_sentence = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_5_sample(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_12___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
-  Py_XDECREF(((PyObject *)p->__pyx_v_sentence));
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_5_sample(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_12___get__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
-  if (p->__pyx_v_sentence) {
-    e = (*v)(p->__pyx_v_sentence, a); if (e) return e;
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_12___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_12___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_12___get__ = {
+  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_12___get__ = {
+  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_12___get__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_12___get__ = {
+  #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_5_cdec___pyx_scope_struct_12___get__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_12___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_12___get__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_12___get__, /*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_12___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_12___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_12___get__, /*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_12___get__, /*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_5_cdec___pyx_scope_struct_12___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_12___get__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_12___get__, /*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_5_cdec___pyx_scope_struct_12___get__, /*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_5_cdec___pyx_scope_struct_13___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_13___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_13___get__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *)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_5_cdec___pyx_scope_struct_5_sample(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_13___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Hypergraph *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
-  tmp = ((PyObject*)p->__pyx_v_sentence);
-  p->__pyx_v_sentence = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_13___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_13___get__ = {
+  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_13___get__ = {
+  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_13___get__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_13___get__ = {
+  #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_5_cdec___pyx_scope_struct_13___get__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_13___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_13___get__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_13___get__, /*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_13___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_13___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_13___get__, /*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_13___get__, /*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_5_cdec___pyx_scope_struct_13___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_13___get__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_13___get__, /*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_5_cdec___pyx_scope_struct_13___get__, /*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_5_cdec___pyx_scope_struct_14___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_14___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_14___get__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *)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_5_cdec___pyx_scope_struct_14___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_HypergraphEdge *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_14___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_14___get__ = {
+  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_14___get__ = {
+  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_14___get__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_14___get__ = {
+  #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_5_cdec___pyx_scope_struct_14___get__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_14___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_14___get__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_14___get__, /*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_14___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_14___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_14___get__, /*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_14___get__, /*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_5_cdec___pyx_scope_struct_14___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_14___get__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_14___get__, /*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_5_cdec___pyx_scope_struct_14___get__, /*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_5_cdec___pyx_scope_struct_15___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_15___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_15___get__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *)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_5_cdec___pyx_scope_struct_15___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_15___get__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_15___get__ = {
+  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_15___get__ = {
+  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_15___get__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_15___get__ = {
+  #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_5_cdec___pyx_scope_struct_15___get__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_15___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_15___get__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_15___get__, /*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_15___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_15___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_15___get__, /*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_15___get__, /*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_5_cdec___pyx_scope_struct_15___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_15___get__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_15___get__, /*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_5_cdec___pyx_scope_struct_15___get__, /*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_5_cdec___pyx_scope_struct_16___get__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_v_self));
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_16___get__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *)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_5_cdec___pyx_scope_struct_16___get__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_5_cdec_HypergraphNode *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_5_sample[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_16___get__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_5_sample = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_16___get__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -12976,7 +25722,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_5_sample = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_5_sample = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_16___get__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -12989,13 +25735,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_5_sample = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_5_sample = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_16___get__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_5_sample = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_16___get__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -13016,12 +25762,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_5_sample = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5_sample = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_16___get__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_5_sample"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_5_sample), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_16___get__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_16___get__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_5_sample, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_16___get__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -13031,24 +25777,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5_sample = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_5_sample, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_5_sample, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_5_sample, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_16___get__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_16___get__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_16___get__, /*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_5_sample, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_16___get__, /*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_5_cdec___pyx_scope_struct_5_sample, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_5_sample, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_16___get__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_16___get__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_5_sample, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_16___get__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -13058,7 +25804,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5_sample = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_5_sample, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_16___get__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -13072,32 +25818,32 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_5_sample = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_6___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_17___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *)o);
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_6___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_17___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_6___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_17___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_17___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_5_cdec___pyx_scope_struct_6___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__ *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_17___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
@@ -13105,11 +25851,11 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_6___iter__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_6___iter__[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_17___iter__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_6___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_17___iter__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -13167,7 +25913,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_6___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_6___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_17___iter__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -13180,13 +25926,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_6___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_6___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_17___iter__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_6___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_17___iter__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -13207,12 +25953,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_6___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_6___iter__ = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_17___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_6___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_6___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_17___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_17___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_6___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_17___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -13222,24 +25968,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_6___iter__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_6___iter__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_6___iter__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_6___iter__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_17___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_17___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_17___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_6___iter__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_17___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_5_cdec___pyx_scope_struct_6___iter__, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_6___iter__, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_17___iter__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_17___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_6___iter__, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_17___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -13249,7 +25995,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_6___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_6___iter__, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_17___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -13263,32 +26009,32 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_6___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_7_todot(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_18_todot(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *)o);
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_7_todot(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_18_todot(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_7_todot(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_18_todot(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *)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_5_cdec___pyx_scope_struct_7_todot(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_18_todot(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_Lattice *)Py_None); Py_INCREF(Py_None);
@@ -13296,11 +26042,11 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_7_todot(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_7_todot[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_18_todot[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_7_todot = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_18_todot = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -13358,7 +26104,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_7_todot = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_7_todot = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_18_todot = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -13371,13 +26117,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_7_todot = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_7_todot = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_18_todot = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_7_todot = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_18_todot = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -13398,12 +26144,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_7_todot = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7_todot = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_18_todot = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_7_todot"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_18_todot"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_7_todot, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_18_todot, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -13413,24 +26159,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7_todot = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_7_todot, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_7_todot, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_7_todot, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_18_todot, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_18_todot, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_18_todot, /*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_7_todot, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_18_todot, /*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_5_cdec___pyx_scope_struct_7_todot, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_7_todot, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_18_todot, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_18_todot, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_7_todot, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_18_todot, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -13440,7 +26186,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7_todot = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_7_todot, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_18_todot, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -13454,11 +26200,11 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_7_todot = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_8_lines(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_19_lines(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_delta = 0;
   p->__pyx_v_i = 0;
@@ -13469,8 +26215,8 @@ static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_8_lines(PyTypeObject *t,
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_8_lines(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_19_lines(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *)o;
   Py_XDECREF(((PyObject *)p->__pyx_outer_scope));
   Py_XDECREF(p->__pyx_v_delta);
   Py_XDECREF(p->__pyx_v_i);
@@ -13481,9 +26227,9 @@ static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_8_lines(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_8_lines(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_19_lines(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -13508,11 +26254,11 @@ static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_8_lines(PyObject *o, visi
   return 0;
 }
 
-static int __pyx_tp_clear_5_cdec___pyx_scope_struct_8_lines(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_19_lines(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_7_todot *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_18_todot *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_delta);
   p->__pyx_v_delta = Py_None; Py_INCREF(Py_None);
@@ -13535,11 +26281,11 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_8_lines(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_8_lines[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_19_lines[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_8_lines = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_19_lines = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -13597,7 +26343,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_8_lines = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_8_lines = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_19_lines = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -13610,13 +26356,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_8_lines = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_8_lines = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_19_lines = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_8_lines = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_19_lines = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -13637,12 +26383,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_8_lines = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_lines = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_19_lines = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_8_lines"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_8_lines), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_19_lines"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_19_lines), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_8_lines, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_19_lines, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -13652,24 +26398,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_lines = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_8_lines, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_8_lines, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_8_lines, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_19_lines, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_19_lines, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_19_lines, /*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_8_lines, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_19_lines, /*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_5_cdec___pyx_scope_struct_8_lines, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_8_lines, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_19_lines, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_19_lines, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_8_lines, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_19_lines, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -13679,7 +26425,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_lines = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_8_lines, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_19_lines, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -13693,28 +26439,28 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_8_lines = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_9___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_20___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *)o);
   p->__pyx_v_i = 0;
   p->__pyx_v_self = 0;
   p->__pyx_t_1 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_9___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_20___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *)o;
   Py_XDECREF(p->__pyx_v_i);
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   Py_XDECREF(p->__pyx_t_1);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_9___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_20___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *)o;
   if (p->__pyx_v_i) {
     e = (*v)(p->__pyx_v_i, a); if (e) return e;
   }
@@ -13727,8 +26473,8 @@ static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_9___iter__(PyObject *o, v
   return 0;
 }
 
-static int __pyx_tp_clear_5_cdec___pyx_scope_struct_9___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__ *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_20___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_i);
   p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
@@ -13742,11 +26488,11 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_9___iter__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_9___iter__[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_20___iter__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_9___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20___iter__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -13804,7 +26550,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_9___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_9___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20___iter__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -13817,13 +26563,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_9___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_9___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20___iter__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_9___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20___iter__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -13844,12 +26590,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_9___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9___iter__ = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_20___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_9___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_9___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_20___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_20___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_9___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_20___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -13859,24 +26605,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9___iter__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_9___iter__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_9___iter__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_9___iter__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_20___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_20___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_20___iter__, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_9___iter__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_20___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_5_cdec___pyx_scope_struct_9___iter__, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_9___iter__, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_20___iter__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_20___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_9___iter__, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_20___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -13886,7 +26632,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_9___iter__, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_20___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -13900,32 +26646,32 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_9___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_10___iter__(PyTypeObject *t, PyObject *a, PyObject *k) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *p;
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_21___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *)o);
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *)o);
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_10___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *)o;
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *)o;
   Py_XDECREF(((PyObject *)p->__pyx_v_self));
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_10___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_21___iter__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *)o;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_21___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_5_cdec___pyx_scope_struct_10___iter__(PyObject *o) {
-  struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__ *)o;
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_21___iter__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_5_cdec_CandidateSet *)Py_None); Py_INCREF(Py_None);
@@ -13933,11 +26679,648 @@ static int __pyx_tp_clear_5_cdec___pyx_scope_struct_10___iter__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_10___iter__[] = {
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_21___iter__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21___iter__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21___iter__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21___iter__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21___iter__ = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_21___iter__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_21___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_21___iter__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_21___iter__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_21___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_21___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_21___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_21___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_5_cdec___pyx_scope_struct_21___iter__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_21___iter__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_21___iter__, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_21___iter__, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_5_cdec___pyx_scope_struct_22__make_config(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *)o);
+  p->__pyx_v_config = 0;
+  p->__pyx_v_info = 0;
+  p->__pyx_v_key = 0;
+  p->__pyx_v_name = 0;
+  p->__pyx_v_value = 0;
+  p->__pyx_t_0 = 0;
+  p->__pyx_t_1 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_22__make_config(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *)o;
+  Py_XDECREF(p->__pyx_v_config);
+  Py_XDECREF(p->__pyx_v_info);
+  Py_XDECREF(p->__pyx_v_key);
+  Py_XDECREF(p->__pyx_v_name);
+  Py_XDECREF(p->__pyx_v_value);
+  Py_XDECREF(p->__pyx_t_0);
+  Py_XDECREF(p->__pyx_t_1);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_22__make_config(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *)o;
+  if (p->__pyx_v_config) {
+    e = (*v)(p->__pyx_v_config, a); if (e) return e;
+  }
+  if (p->__pyx_v_info) {
+    e = (*v)(p->__pyx_v_info, a); if (e) return e;
+  }
+  if (p->__pyx_v_key) {
+    e = (*v)(p->__pyx_v_key, a); if (e) return e;
+  }
+  if (p->__pyx_v_name) {
+    e = (*v)(p->__pyx_v_name, a); if (e) return e;
+  }
+  if (p->__pyx_v_value) {
+    e = (*v)(p->__pyx_v_value, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  if (p->__pyx_t_1) {
+    e = (*v)(p->__pyx_t_1, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_22__make_config(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_config);
+  p->__pyx_v_config = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_info);
+  p->__pyx_v_info = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_key);
+  p->__pyx_v_key = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_name);
+  p->__pyx_v_name = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_value);
+  p->__pyx_v_value = 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);
+  tmp = ((PyObject*)p->__pyx_t_1);
+  p->__pyx_t_1 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_22__make_config[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22__make_config = {
+  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_22__make_config = {
+  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_22__make_config = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22__make_config = {
+  #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_5_cdec___pyx_scope_struct_22__make_config = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_22__make_config"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_22__make_config), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_22__make_config, /*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_22__make_config, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_22__make_config, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_22__make_config, /*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__make_config, /*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_5_cdec___pyx_scope_struct_22__make_config, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_22__make_config, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_22__make_config, /*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_5_cdec___pyx_scope_struct_22__make_config, /*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_5_cdec___pyx_scope_struct_23___cinit__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *)o);
+  p->__pyx_v_config = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_23___cinit__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *)o;
+  Py_XDECREF(p->__pyx_v_config);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_23___cinit__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *)o;
+  if (p->__pyx_v_config) {
+    e = (*v)(p->__pyx_v_config, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_5_cdec___pyx_scope_struct_23___cinit__(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_config);
+  p->__pyx_v_config = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_5_cdec___pyx_scope_struct_23___cinit__[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23___cinit__ = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23___cinit__ = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_23___cinit__ = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23___cinit__ = {
+  #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_5_cdec___pyx_scope_struct_23___cinit__ = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_23___cinit__"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_23___cinit__, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_23___cinit__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_23___cinit__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_23___cinit__, /*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___cinit__, /*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_5_cdec___pyx_scope_struct_23___cinit__, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_23___cinit__, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_5_cdec___pyx_scope_struct_23___cinit__, /*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_5_cdec___pyx_scope_struct_23___cinit__, /*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_5_cdec___pyx_scope_struct_24_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_kv = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_5_cdec___pyx_scope_struct_24_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *)o;
+  Py_XDECREF(((PyObject *)p->__pyx_outer_scope));
+  Py_XDECREF(p->__pyx_v_kv);
+  Py_XDECREF(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_5_cdec___pyx_scope_struct_24_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_kv) {
+    e = (*v)(p->__pyx_v_kv, 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_5_cdec___pyx_scope_struct_24_genexpr(PyObject *o) {
+  struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_5_cdec___pyx_scope_struct_23___cinit__ *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_kv);
+  p->__pyx_v_kv = 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_5_cdec___pyx_scope_struct_24_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_10___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -13995,7 +27378,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_10___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_10___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -14008,13 +27391,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_10___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_10___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_10___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -14035,12 +27418,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_10___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_10___iter__ = {
+static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_24_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_10___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_10___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_cdec.__pyx_scope_struct_24_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_5_cdec___pyx_scope_struct_24_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_10___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_5_cdec___pyx_scope_struct_24_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -14050,24 +27433,24 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_10___iter__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_10___iter__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_10___iter__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_10___iter__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_24_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_24_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_24_genexpr, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_10___iter__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_24_genexpr, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_5_cdec___pyx_scope_struct_10___iter__, /*tp_traverse*/
-  __pyx_tp_clear_5_cdec___pyx_scope_struct_10___iter__, /*tp_clear*/
+  __pyx_tp_traverse_5_cdec___pyx_scope_struct_24_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_5_cdec___pyx_scope_struct_24_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_5_cdec___pyx_scope_struct_10___iter__, /*tp_methods*/
+  __pyx_methods_5_cdec___pyx_scope_struct_24_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -14077,7 +27460,7 @@ static PyTypeObject __pyx_type_5_cdec___pyx_scope_struct_10___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_5_cdec___pyx_scope_struct_10___iter__, /*tp_new*/
+  __pyx_tp_new_5_cdec___pyx_scope_struct_24_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -14110,84 +27493,144 @@ static struct PyModuleDef __pyx_moduledef = {
 #endif
 
 static __Pyx_StringTabEntry __pyx_string_tab[] = {
-  {&__pyx_kp_s_1, __pyx_k_1, sizeof(__pyx_k_1), 0, 0, 1, 0},
-  {&__pyx_n_s_10, __pyx_k_10, sizeof(__pyx_k_10), 0, 0, 1, 1},
+  {&__pyx_kp_s_10, __pyx_k_10, sizeof(__pyx_k_10), 0, 0, 1, 0},
   {&__pyx_kp_s_11, __pyx_k_11, sizeof(__pyx_k_11), 0, 0, 1, 0},
+  {&__pyx_kp_s_12, __pyx_k_12, sizeof(__pyx_k_12), 0, 0, 1, 0},
   {&__pyx_kp_s_13, __pyx_k_13, sizeof(__pyx_k_13), 0, 0, 1, 0},
-  {&__pyx_kp_s_14, __pyx_k_14, sizeof(__pyx_k_14), 0, 0, 1, 0},
+  {&__pyx_n_s_15, __pyx_k_15, sizeof(__pyx_k_15), 0, 0, 1, 1},
+  {&__pyx_kp_s_16, __pyx_k_16, sizeof(__pyx_k_16), 0, 0, 1, 0},
+  {&__pyx_kp_s_17, __pyx_k_17, sizeof(__pyx_k_17), 0, 0, 1, 0},
   {&__pyx_kp_s_19, __pyx_k_19, sizeof(__pyx_k_19), 0, 0, 1, 0},
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-  {&__pyx_kp_s_20, __pyx_k_20, sizeof(__pyx_k_20), 0, 0, 1, 0},
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   {&__pyx_kp_s_22, __pyx_k_22, sizeof(__pyx_k_22), 0, 0, 1, 0},
   {&__pyx_kp_s_23, __pyx_k_23, sizeof(__pyx_k_23), 0, 0, 1, 0},
-  {&__pyx_kp_s_24, __pyx_k_24, sizeof(__pyx_k_24), 0, 0, 1, 0},
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   {&__pyx_kp_s_27, __pyx_k_27, sizeof(__pyx_k_27), 0, 0, 1, 0},
+  {&__pyx_kp_s_28, __pyx_k_28, sizeof(__pyx_k_28), 0, 0, 1, 0},
+  {&__pyx_kp_s_29, __pyx_k_29, sizeof(__pyx_k_29), 0, 0, 1, 0},
+  {&__pyx_kp_s_3, __pyx_k_3, sizeof(__pyx_k_3), 0, 0, 1, 0},
   {&__pyx_kp_s_30, __pyx_k_30, sizeof(__pyx_k_30), 0, 0, 1, 0},
   {&__pyx_kp_s_31, __pyx_k_31, sizeof(__pyx_k_31), 0, 0, 1, 0},
-  {&__pyx_kp_s_33, __pyx_k_33, sizeof(__pyx_k_33), 0, 0, 1, 0},
+  {&__pyx_kp_s_32, __pyx_k_32, sizeof(__pyx_k_32), 0, 0, 1, 0},
+  {&__pyx_kp_s_34, __pyx_k_34, sizeof(__pyx_k_34), 0, 0, 1, 0},
   {&__pyx_kp_s_35, __pyx_k_35, sizeof(__pyx_k_35), 0, 0, 1, 0},
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-  {&__pyx_kp_s_40, __pyx_k_40, sizeof(__pyx_k_40), 0, 0, 1, 0},
+  {&__pyx_kp_s_38, __pyx_k_38, sizeof(__pyx_k_38), 0, 0, 1, 0},
+  {&__pyx_kp_s_39, __pyx_k_39, sizeof(__pyx_k_39), 0, 0, 1, 0},
+  {&__pyx_kp_s_4, __pyx_k_4, sizeof(__pyx_k_4), 0, 0, 1, 0},
+  {&__pyx_kp_s_41, __pyx_k_41, sizeof(__pyx_k_41), 0, 0, 1, 0},
+  {&__pyx_kp_s_43, __pyx_k_43, sizeof(__pyx_k_43), 0, 0, 1, 0},
+  {&__pyx_kp_s_45, __pyx_k_45, sizeof(__pyx_k_45), 0, 0, 1, 0},
+  {&__pyx_kp_s_46, __pyx_k_46, sizeof(__pyx_k_46), 0, 0, 1, 0},
+  {&__pyx_kp_s_48, __pyx_k_48, sizeof(__pyx_k_48), 0, 0, 1, 0},
+  {&__pyx_kp_s_49, __pyx_k_49, sizeof(__pyx_k_49), 0, 0, 1, 0},
+  {&__pyx_kp_s_50, __pyx_k_50, sizeof(__pyx_k_50), 0, 0, 1, 0},
+  {&__pyx_kp_s_53, __pyx_k_53, sizeof(__pyx_k_53), 0, 0, 1, 0},
+  {&__pyx_n_s_54, __pyx_k_54, sizeof(__pyx_k_54), 0, 0, 1, 1},
+  {&__pyx_n_s_55, __pyx_k_55, sizeof(__pyx_k_55), 0, 0, 1, 1},
+  {&__pyx_kp_s_58, __pyx_k_58, sizeof(__pyx_k_58), 0, 0, 1, 0},
+  {&__pyx_kp_s_64, __pyx_k_64, sizeof(__pyx_k_64), 0, 0, 1, 0},
+  {&__pyx_kp_s_7, __pyx_k_7, sizeof(__pyx_k_7), 0, 0, 1, 0},
+  {&__pyx_kp_s_8, __pyx_k_8, sizeof(__pyx_k_8), 0, 0, 1, 0},
+  {&__pyx_kp_s_9, __pyx_k_9, sizeof(__pyx_k_9), 0, 0, 1, 0},
   {&__pyx_n_s__BLEU, __pyx_k__BLEU, sizeof(__pyx_k__BLEU), 0, 0, 1, 1},
+  {&__pyx_n_s__CER, __pyx_k__CER, sizeof(__pyx_k__CER), 0, 0, 1, 1},
   {&__pyx_n_s__Exception, __pyx_k__Exception, sizeof(__pyx_k__Exception), 0, 0, 1, 1},
   {&__pyx_n_s__IBM_BLEU, __pyx_k__IBM_BLEU, sizeof(__pyx_k__IBM_BLEU), 0, 0, 1, 1},
   {&__pyx_n_s__IndexError, __pyx_k__IndexError, sizeof(__pyx_k__IndexError), 0, 0, 1, 1},
+  {&__pyx_n_s__InvalidConfig, __pyx_k__InvalidConfig, sizeof(__pyx_k__InvalidConfig), 0, 0, 1, 1},
   {&__pyx_n_s__KeyError, __pyx_k__KeyError, sizeof(__pyx_k__KeyError), 0, 0, 1, 1},
   {&__pyx_n_s__NotImplemented, __pyx_k__NotImplemented, sizeof(__pyx_k__NotImplemented), 0, 0, 1, 1},
   {&__pyx_n_s__ParseFailed, __pyx_k__ParseFailed, sizeof(__pyx_k__ParseFailed), 0, 0, 1, 1},
+  {&__pyx_n_s__PhraseModel_, __pyx_k__PhraseModel_, sizeof(__pyx_k__PhraseModel_), 0, 0, 1, 1},
   {&__pyx_n_s__TER, __pyx_k__TER, sizeof(__pyx_k__TER), 0, 0, 1, 1},
   {&__pyx_n_s__TypeError, __pyx_k__TypeError, sizeof(__pyx_k__TypeError), 0, 0, 1, 1},
+  {&__pyx_n_s__ValueError, __pyx_k__ValueError, sizeof(__pyx_k__ValueError), 0, 0, 1, 1},
+  {&__pyx_n_s____class__, __pyx_k____class__, sizeof(__pyx_k____class__), 0, 0, 1, 1},
   {&__pyx_n_s____enter__, __pyx_k____enter__, sizeof(__pyx_k____enter__), 0, 0, 1, 1},
   {&__pyx_n_s____exit__, __pyx_k____exit__, sizeof(__pyx_k____exit__), 0, 0, 1, 1},
+  {&__pyx_n_s____init__, __pyx_k____init__, sizeof(__pyx_k____init__), 0, 0, 1, 1},
   {&__pyx_n_s____main__, __pyx_k____main__, sizeof(__pyx_k____main__), 0, 0, 1, 1},
+  {&__pyx_n_s____name__, __pyx_k____name__, sizeof(__pyx_k____name__), 0, 0, 1, 1},
   {&__pyx_n_s____test__, __pyx_k____test__, sizeof(__pyx_k____test__), 0, 0, 1, 1},
   {&__pyx_n_s___cdec, __pyx_k___cdec, sizeof(__pyx_k___cdec), 0, 0, 1, 1},
+  {&__pyx_n_s___make_config, __pyx_k___make_config, sizeof(__pyx_k___make_config), 0, 0, 1, 1},
+  {&__pyx_n_s___phrase, __pyx_k___phrase, sizeof(__pyx_k___phrase), 0, 0, 1, 1},
+  {&__pyx_n_s___sa, __pyx_k___sa, sizeof(__pyx_k___sa), 0, 0, 1, 1},
+  {&__pyx_n_s__a, __pyx_k__a, sizeof(__pyx_k__a), 0, 0, 1, 1},
   {&__pyx_n_s__beam_alpha, __pyx_k__beam_alpha, sizeof(__pyx_k__beam_alpha), 0, 0, 1, 1},
+  {&__pyx_n_s__cat, __pyx_k__cat, sizeof(__pyx_k__cat), 0, 0, 1, 1},
   {&__pyx_n_s__config, __pyx_k__config, sizeof(__pyx_k__config), 0, 0, 1, 1},
-  {&__pyx_n_s__decode, __pyx_k__decode, sizeof(__pyx_k__decode), 0, 0, 1, 1},
+  {&__pyx_n_s__config_str, __pyx_k__config_str, sizeof(__pyx_k__config_str), 0, 0, 1, 1},
+  {&__pyx_n_s__csplit, __pyx_k__csplit, sizeof(__pyx_k__csplit), 0, 0, 1, 1},
   {&__pyx_n_s__delta, __pyx_k__delta, sizeof(__pyx_k__delta), 0, 0, 1, 1},
   {&__pyx_n_s__density, __pyx_k__density, sizeof(__pyx_k__density), 0, 0, 1, 1},
   {&__pyx_n_s__dot, __pyx_k__dot, sizeof(__pyx_k__dot), 0, 0, 1, 1},
+  {&__pyx_n_s__e, __pyx_k__e, sizeof(__pyx_k__e), 0, 0, 1, 1},
   {&__pyx_n_s__encode, __pyx_k__encode, sizeof(__pyx_k__encode), 0, 0, 1, 1},
   {&__pyx_n_s__encoding, __pyx_k__encoding, sizeof(__pyx_k__encoding), 0, 0, 1, 1},
   {&__pyx_n_s__enumerate, __pyx_k__enumerate, sizeof(__pyx_k__enumerate), 0, 0, 1, 1},
   {&__pyx_n_s__eval, __pyx_k__eval, sizeof(__pyx_k__eval), 0, 0, 1, 1},
+  {&__pyx_n_s__evaluate, __pyx_k__evaluate, sizeof(__pyx_k__evaluate), 0, 0, 1, 1},
   {&__pyx_n_s__evaluator, __pyx_k__evaluator, sizeof(__pyx_k__evaluator), 0, 0, 1, 1},
+  {&__pyx_n_s__f, __pyx_k__f, sizeof(__pyx_k__f), 0, 0, 1, 1},
+  {&__pyx_n_s__formalism, __pyx_k__formalism, sizeof(__pyx_k__formalism), 0, 0, 1, 1},
+  {&__pyx_n_s__format, __pyx_k__format, sizeof(__pyx_k__format), 0, 0, 1, 1},
+  {&__pyx_n_s__fst, __pyx_k__fst, sizeof(__pyx_k__fst), 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__grammar, __pyx_k__grammar, sizeof(__pyx_k__grammar), 0, 0, 1, 1},
+  {&__pyx_n_s__hyp, __pyx_k__hyp, sizeof(__pyx_k__hyp), 0, 0, 1, 1},
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":35
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":37
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  *         if not 0 <= index < len(self):
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":39
+  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":41
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/lattice.pxi":68
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  *             yield '}'
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- *     if isinstance(sentence, unicode):
- *         ret = sentence.encode('utf8')             # <<<<<<<<<<<<<<
- *     elif isinstance(sentence, str):
- *         ret = sentence
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":50
+ *     def __getitem__(self, int index):
+ *         if not 0 <= index < len(self):
+ *             raise IndexError('sufficient stats vector index out of range')             # <<<<<<<<<<<<<<
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+ * 
  */
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":89
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":84
  *     def __getitem__(self,int k):
  *         if not 0 <= k < self.cs.size():
  *             raise IndexError('candidate set index out of range')             # <<<<<<<<<<<<<<
  *         cdef Candidate candidate = Candidate()
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+  __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_43));
+  __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_44));
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+  /* "_cdec.pyx":50
+ *         """
+ *         if config_str is None:
+ *             formalism = config.get('formalism', None)             # <<<<<<<<<<<<<<
+ *             if formalism not in ('scfg', 'fst', 'lextrans', 'pb',
+ *                     'csplit', 'tagger', 'lexalign'):
+ */
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- * 
- *     def read_weights(self, cfg):
- *         with open(cfg) as fp:             # <<<<<<<<<<<<<<
+  /* "_cdec.pyx":90
+ *         with open(weights) as fp:
  *             for line in fp:
+ *                 if line.strip().startswith('#'): continue             # <<<<<<<<<<<<<<
  *                 fname, value = line.split()
+ *                 self.weights[fname.strip()] = float(value)
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+  /* "_cdec.pyx":88
+ * 
+ *     def read_weights(self, weights):
+ *         with open(weights) as fp:             # <<<<<<<<<<<<<<
+ *             for line in fp:
+ *                 if line.strip().startswith('#'): continue
+ */
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- *         if isinstance(sentence, unicode):
- *             inp = sentence.strip().encode('utf8')             # <<<<<<<<<<<<<<
- *         elif isinstance(sentence, str):
- *             inp = sentence.strip()
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
+ * import cdec.sa._sa as _sa
+ * 
+ * def _phrase(phrase):             # <<<<<<<<<<<<<<
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * 
  */
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-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":153
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+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":190
+ *         return []
  * 
  * BLEU = Scorer('IBM_BLEU')             # <<<<<<<<<<<<<<
  * TER = Scorer('TER')
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-  if (__Pyx_SetAttrString(__pyx_m, "Hypergraph", (PyObject *)&__pyx_type_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "NT", (PyObject *)&__pyx_type_5_cdec_NT) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 8; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "NTRef", (PyObject *)&__pyx_type_5_cdec_NTRef) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "TRule", (PyObject *)&__pyx_type_5_cdec_TRule) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 50; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "Grammar", (PyObject *)&__pyx_type_5_cdec_Grammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 181; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "TextGrammar", (PyObject *)&__pyx_type_5_cdec_TextGrammar) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 204; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "Hypergraph", (PyObject *)&__pyx_type_5_cdec_Hypergraph) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  if (__Pyx_SetAttrString(__pyx_m, "Lattice", (PyObject *)&__pyx_type_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "HypergraphNode", (PyObject *)&__pyx_type_5_cdec_HypergraphNode) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 193; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "Lattice", (PyObject *)&__pyx_type_5_cdec_Lattice) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (__Pyx_SetAttrString(__pyx_m, "SegmentEvaluator", (PyObject *)&__pyx_type_5_cdec_SegmentEvaluator) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 98; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  if (PyType_Ready(&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Decoder", (PyObject *)&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Metric", (PyObject *)&__pyx_type_5_cdec_Metric) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 173; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_5_cdec_Metric = &__pyx_type_5_cdec_Metric;
+  if (PyType_Ready(&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Decoder", (PyObject *)&__pyx_type_5_cdec_Decoder) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 39; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec_Decoder = &__pyx_type_5_cdec_Decoder;
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+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct____iter__) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 31; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct____iter__ = &__pyx_type_5_cdec___pyx_scope_struct____iter__;
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+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_1___iter__) < 0) {__pyx_filename = __pyx_f[1]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_5_cdec___pyx_scope_struct_1___iter__ = &__pyx_type_5_cdec___pyx_scope_struct_1___iter__;
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+  if (PyType_Ready(&__pyx_type_5_cdec___pyx_scope_struct_9_kbest_trees) < 0) {__pyx_filename = __pyx_f[3]; __pyx_lineno = 43; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   /*--- Variable import code ---*/
   /*--- Function import code ---*/
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+  if (__Pyx_ImportFunction(__pyx_t_1, "sym_tostring", (void (**)(void))&__pyx_f_4cdec_2sa_3_sa_sym_tostring, "char *(int)") < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_ImportFunction(__pyx_t_1, "sym_tocat", (void (**)(void))&__pyx_f_4cdec_2sa_3_sa_sym_tocat, "char *(int)") < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_ImportFunction(__pyx_t_1, "sym_isvar", (void (**)(void))&__pyx_f_4cdec_2sa_3_sa_sym_isvar, "int (int)") < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_ImportFunction(__pyx_t_1, "sym_getindex", (void (**)(void))&__pyx_f_4cdec_2sa_3_sa_sym_getindex, "int (int)") < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  Py_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   /*--- Execution code ---*/
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":153
- *         return self.name.c_str()
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":3
+ * cimport grammar
+ * cimport cdec.sa._sa as _sa
+ * import cdec.sa._sa as _sa             # <<<<<<<<<<<<<<
+ * 
+ * def _phrase(phrase):
+ */
+  __pyx_t_2 = PyList_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s_55));
+  PyList_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_n_s_55));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s_55));
+  __pyx_t_3 = __Pyx_Import(((PyObject *)__pyx_n_s_54), ((PyObject *)__pyx_t_2), -1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s___sa, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 3; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/Users/vchahun/Sandbox/cdec/python/src/grammar.pxi":5
+ * import cdec.sa._sa as _sa
+ * 
+ * def _phrase(phrase):             # <<<<<<<<<<<<<<
+ *     return ' '.join(w.encode('utf8') if isinstance(w, unicode) else str(w) for w in phrase)
+ * 
+ */
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_5_cdec_1_phrase, NULL, __pyx_n_s___cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s___phrase, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[2]; __pyx_lineno = 5; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":190
+ *         return []
  * 
  * BLEU = Scorer('IBM_BLEU')             # <<<<<<<<<<<<<<
  * TER = Scorer('TER')
+ * CER = Scorer('CER')
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_41), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__BLEU, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 153; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_59), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__BLEU, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":154
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":191
  * 
  * BLEU = Scorer('IBM_BLEU')
  * TER = Scorer('TER')             # <<<<<<<<<<<<<<
+ * CER = Scorer('CER')
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_42), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__TER, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[4]; __pyx_lineno = 154; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_60), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 191; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__TER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 191; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
+
+  /* "/Users/vchahun/Sandbox/cdec/python/src/mteval.pxi":192
+ * BLEU = Scorer('IBM_BLEU')
+ * TER = Scorer('TER')
+ * CER = Scorer('CER')             # <<<<<<<<<<<<<<
+ */
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_5_cdec_Scorer)), ((PyObject *)__pyx_k_tuple_61), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 192; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__CER, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[5]; __pyx_lineno = 192; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "_cdec.pyx":11
+  /* "_cdec.pyx":22
  * include "mteval.pxi"
  * 
  * SetSilent(True)             # <<<<<<<<<<<<<<
+ * decoder.register_feature_functions()
  * 
- * class ParseFailed(Exception): pass
  */
   SetSilent(1);
 
-  /* "_cdec.pyx":13
+  /* "_cdec.pyx":23
+ * 
  * SetSilent(True)
+ * decoder.register_feature_functions()             # <<<<<<<<<<<<<<
  * 
- * class ParseFailed(Exception): pass             # <<<<<<<<<<<<<<
+ * class InvalidConfig(Exception): pass
+ */
+  register_feature_functions();
+
+  /* "_cdec.pyx":25
+ * decoder.register_feature_functions()
+ * 
+ * class InvalidConfig(Exception): pass             # <<<<<<<<<<<<<<
+ * class ParseFailed(Exception): pass
  * 
- * cdef class Decoder:
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_INCREF(__pyx_builtin_Exception);
   PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_builtin_Exception);
   __Pyx_GIVEREF(__pyx_builtin_Exception);
-  __pyx_t_3 = __Pyx_CreateClass(((PyObject *)__pyx_t_2), ((PyObject *)__pyx_t_1), __pyx_n_s__ParseFailed, __pyx_n_s___cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_3);
+  __pyx_t_4 = __Pyx_CreateClass(((PyObject *)__pyx_t_2), ((PyObject *)__pyx_t_3), __pyx_n_s__InvalidConfig, __pyx_n_s___cdec); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__ParseFailed, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 13; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__InvalidConfig, __pyx_t_4) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+
+  /* "_cdec.pyx":26
+ * 
+ * class InvalidConfig(Exception): pass
+ * class ParseFailed(Exception): pass             # <<<<<<<<<<<<<<
+ * 
+ * def _make_config(config):
+ */
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_4);
+  __Pyx_INCREF(__pyx_builtin_Exception);
+  PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_builtin_Exception);
+  __Pyx_GIVEREF(__pyx_builtin_Exception);
+  __pyx_t_2 = __Pyx_CreateClass(((PyObject *)__pyx_t_4), ((PyObject *)__pyx_t_3), __pyx_n_s__ParseFailed, __pyx_n_s___cdec); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__ParseFailed, __pyx_t_2) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 26; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
+
+  /* "_cdec.pyx":28
+ * class ParseFailed(Exception): pass
+ * 
+ * def _make_config(config):             # <<<<<<<<<<<<<<
+ *     for key, value in config.items():
+ *         if isinstance(value, dict):
+ */
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_5_cdec_3_make_config, NULL, __pyx_n_s___cdec); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s___make_config, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 28; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
 
   /* "_cdec.pyx":1
  * from libcpp.string cimport string             # <<<<<<<<<<<<<<
  * from libcpp.vector cimport vector
  * from utils cimport *
  */
-  __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;
+
+  /* "string.to_py":25
+ * 
+ * @cname("__pyx_convert_string_to_py_")
+ * cdef object __pyx_convert_string_to_py_(string& s):             # <<<<<<<<<<<<<<
+ *     return s.data()[:s.size()]
+ * 
+ */
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
   __Pyx_XDECREF(__pyx_t_2);
   __Pyx_XDECREF(__pyx_t_3);
+  __Pyx_XDECREF(__pyx_t_4);
   if (__pyx_m) {
     __Pyx_AddTraceback("init _cdec", __pyx_clineno, __pyx_lineno, __pyx_filename);
     Py_DECREF(__pyx_m); __pyx_m = 0;
@@ -14909,6 +28570,71 @@ bad:
 }
 #endif
 
+static void __Pyx_RaiseArgtupleInvalid(
+    const char* func_name,
+    int exact,
+    Py_ssize_t num_min,
+    Py_ssize_t num_max,
+    Py_ssize_t num_found)
+{
+    Py_ssize_t num_expected;
+    const char *more_or_less;
+    if (num_found < num_min) {
+        num_expected = num_min;
+        more_or_less = "at least";
+    } else {
+        num_expected = num_max;
+        more_or_less = "at most";
+    }
+    if (exact) {
+        more_or_less = "exactly";
+    }
+    PyErr_Format(PyExc_TypeError,
+                 "%s() takes %s %" PY_FORMAT_SIZE_T "d positional argument%s (%" PY_FORMAT_SIZE_T "d given)",
+                 func_name, more_or_less, num_expected,
+                 (num_expected == 1) ? "" : "s", num_found);
+}
+
+static CYTHON_INLINE int __Pyx_CheckKeywordStrings(
+    PyObject *kwdict,
+    const char* function_name,
+    int kw_allowed)
+{
+    PyObject* key = 0;
+    Py_ssize_t pos = 0;
+#if CPYTHON_COMPILING_IN_PYPY
+    if (!kw_allowed && PyDict_Next(kwdict, &pos, &key, 0))
+        goto invalid_keyword;
+    return 1;
+#else
+    while (PyDict_Next(kwdict, &pos, &key, 0)) {
+        #if PY_MAJOR_VERSION < 3
+        if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key)))
+        #else
+        if (unlikely(!PyUnicode_Check(key)))
+        #endif
+            goto invalid_keyword_type;
+    }
+    if ((!kw_allowed) && unlikely(key))
+        goto invalid_keyword;
+    return 1;
+invalid_keyword_type:
+    PyErr_Format(PyExc_TypeError,
+        "%s() keywords must be strings", function_name);
+    return 0;
+#endif
+invalid_keyword:
+    PyErr_Format(PyExc_TypeError,
+    #if PY_MAJOR_VERSION < 3
+        "%s() got an unexpected keyword argument '%s'",
+        function_name, PyString_AsString(key));
+    #else
+        "%s() got an unexpected keyword argument '%U'",
+        function_name, key);
+    #endif
+    return 0;
+}
+
 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
     const char *name, int exact)
 {
@@ -14941,6 +28667,10 @@ static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
     return 0;
 }
 
+static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname) {
+    PyErr_Format(PyExc_NameError, "free variable '%s' referenced before assignment in enclosing scope", varname);
+}
+
 static void __Pyx_RaiseDoubleKeywordsError(
     const char* func_name,
     PyObject* kw_name)
@@ -15031,48 +28761,40 @@ bad:
     return -1;
 }
 
-static void __Pyx_RaiseArgtupleInvalid(
-    const char* func_name,
-    int exact,
-    Py_ssize_t num_min,
-    Py_ssize_t num_max,
-    Py_ssize_t num_found)
-{
-    Py_ssize_t num_expected;
-    const char *more_or_less;
-    if (num_found < num_min) {
-        num_expected = num_min;
-        more_or_less = "at least";
-    } else {
-        num_expected = num_max;
-        more_or_less = "at most";
-    }
-    if (exact) {
-        more_or_less = "exactly";
-    }
-    PyErr_Format(PyExc_TypeError,
-                 "%s() takes %s %"PY_FORMAT_SIZE_T"d positional argument%s (%"PY_FORMAT_SIZE_T"d given)",
-                 func_name, more_or_less, num_expected,
-                 (num_expected == 1) ? "" : "s", num_found);
+static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
+    PyErr_Format(PyExc_ValueError,
+                 "too many values to unpack (expected %" PY_FORMAT_SIZE_T "d)", expected);
 }
 
 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
     PyErr_Format(PyExc_ValueError,
-                 "need more than %"PY_FORMAT_SIZE_T"d value%s to unpack",
+                 "need more than %" PY_FORMAT_SIZE_T "d value%s to unpack",
                  index, (index == 1) ? "" : "s");
 }
 
-static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
-    PyErr_Format(PyExc_ValueError,
-                 "too many values to unpack (expected %"PY_FORMAT_SIZE_T"d)", expected);
-}
-
-static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
-    if (unlikely(retval)) {
-        Py_DECREF(retval);
-        __Pyx_RaiseTooManyValuesError(expected);
-        return -1;
-    } else if (PyErr_Occurred()) {
+static CYTHON_INLINE int __Pyx_IterFinish(void) {
+#if CYTHON_COMPILING_IN_CPYTHON
+    PyThreadState *tstate = PyThreadState_GET();
+    PyObject* exc_type = tstate->curexc_type;
+    if (unlikely(exc_type)) {
+        if (likely(exc_type == PyExc_StopIteration) || PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration)) {
+            PyObject *exc_value, *exc_tb;
+            exc_value = tstate->curexc_value;
+            exc_tb = tstate->curexc_traceback;
+            tstate->curexc_type = 0;
+            tstate->curexc_value = 0;
+            tstate->curexc_traceback = 0;
+            Py_DECREF(exc_type);
+            Py_XDECREF(exc_value);
+            Py_XDECREF(exc_tb);
+            return 0;
+        } else {
+            return -1;
+        }
+    }
+    return 0;
+#else
+    if (unlikely(PyErr_Occurred())) {
         if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) {
             PyErr_Clear();
             return 0;
@@ -15081,16 +28803,62 @@ static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
         }
     }
     return 0;
+#endif
 }
 
+static int __Pyx_IternextUnpackEndCheck(PyObject *retval, Py_ssize_t expected) {
+    if (unlikely(retval)) {
+        Py_DECREF(retval);
+        __Pyx_RaiseTooManyValuesError(expected);
+        return -1;
+    } else {
+        return __Pyx_IterFinish();
+    }
+    return 0;
+}
 
-
-static CYTHON_INLINE void __Pyx_RaiseClosureNameError(const char *varname) {
-    PyErr_Format(PyExc_NameError, "free variable '%s' referenced before assignment in enclosing scope", varname);
+static CYTHON_INLINE PyObject *__Pyx_PyIter_Next2(PyObject* iterator, PyObject* defval) {
+    PyObject* next;
+    iternextfunc iternext = Py_TYPE(iterator)->tp_iternext;
+#if CYTHON_COMPILING_IN_CPYTHON
+    if (unlikely(!iternext)) {
+#else
+    if (unlikely(!iternext) || unlikely(!PyIter_Check(iterator))) {
+#endif
+        PyErr_Format(PyExc_TypeError,
+            "%.200s object is not an iterator", Py_TYPE(iterator)->tp_name);
+        return NULL;
+    }
+    next = iternext(iterator);
+    if (likely(next))
+        return next;
+#if CYTHON_COMPILING_IN_CPYTHON
+#if PY_VERSION_HEX >= 0x03010000 || (PY_MAJOR_VERSION < 3 && PY_VERSION_HEX >= 0x02070000)
+    if (unlikely(iternext == &_PyObject_NextNotImplemented))
+        return NULL;
+#endif
+#endif
+    if (defval) {
+        PyObject* exc_type = PyErr_Occurred();
+        if (exc_type) {
+            if (unlikely(exc_type != PyExc_StopIteration) &&
+                    !PyErr_GivenExceptionMatches(exc_type, PyExc_StopIteration))
+                return NULL;
+            PyErr_Clear();
+        }
+        Py_INCREF(defval);
+        return defval;
+    }
+    if (!PyErr_Occurred())
+        PyErr_SetNone(PyExc_StopIteration);
+    return NULL;
 }
 
 static double __Pyx__PyObject_AsDouble(PyObject* obj) {
     PyObject* float_value;
+#if CYTHON_COMPILING_IN_PYPY
+    float_value = PyNumber_Float(obj);
+#else
     if (Py_TYPE(obj)->tp_as_number && Py_TYPE(obj)->tp_as_number->nb_float) {
         return PyFloat_AsDouble(obj);
     } else if (PyUnicode_CheckExact(obj) || PyBytes_CheckExact(obj)) {
@@ -15107,6 +28875,7 @@ static double __Pyx__PyObject_AsDouble(PyObject* obj) {
         PyTuple_SET_ITEM(args, 0, 0);
         Py_DECREF(args);
     }
+#endif
     if (likely(float_value)) {
         double value = PyFloat_AS_DOUBLE(float_value);
         Py_DECREF(float_value);
@@ -15118,6 +28887,7 @@ bad:
 
 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
     PyObject *local_type, *local_value, *local_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
     PyObject *tmp_type, *tmp_value, *tmp_tb;
     PyThreadState *tstate = PyThreadState_GET();
     local_type = tstate->curexc_type;
@@ -15126,19 +28896,27 @@ static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
     tstate->curexc_type = 0;
     tstate->curexc_value = 0;
     tstate->curexc_traceback = 0;
+#else
+    PyErr_Fetch(&local_type, &local_value, &local_tb);
+#endif
     PyErr_NormalizeException(&local_type, &local_value, &local_tb);
+#if CYTHON_COMPILING_IN_CPYTHON
     if (unlikely(tstate->curexc_type))
+#else
+    if (unlikely(PyErr_Occurred()))
+#endif
         goto bad;
     #if PY_MAJOR_VERSION >= 3
     if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
         goto bad;
     #endif
-    *type = local_type;
-    *value = local_value;
-    *tb = local_tb;
     Py_INCREF(local_type);
     Py_INCREF(local_value);
     Py_INCREF(local_tb);
+    *type = local_type;
+    *value = local_value;
+    *tb = local_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
     tmp_type = tstate->exc_type;
     tmp_value = tstate->exc_value;
     tmp_tb = tstate->exc_traceback;
@@ -15146,10 +28924,13 @@ static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
     tstate->exc_value = local_value;
     tstate->exc_traceback = local_tb;
     /* Make sure tstate is in a consistent state when we XDECREF
-       these objects (XDECREF may run arbitrary code). */
+       these objects (DECREF may run arbitrary code). */
     Py_XDECREF(tmp_type);
     Py_XDECREF(tmp_value);
     Py_XDECREF(tmp_tb);
+#else
+    PyErr_SetExcInfo(local_type, local_value, local_tb);
+#endif
     return 0;
 bad:
     *type = 0;
@@ -15162,6 +28943,7 @@ bad:
 }
 
 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
+#if CYTHON_COMPILING_IN_CPYTHON
     PyThreadState *tstate = PyThreadState_GET();
     *type = tstate->exc_type;
     *value = tstate->exc_value;
@@ -15169,8 +28951,12 @@ static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value,
     Py_XINCREF(*type);
     Py_XINCREF(*value);
     Py_XINCREF(*tb);
+#else
+    PyErr_GetExcInfo(type, value, tb);
+#endif
 }
 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
+#if CYTHON_COMPILING_IN_CPYTHON
     PyObject *tmp_type, *tmp_value, *tmp_tb;
     PyThreadState *tstate = PyThreadState_GET();
     tmp_type = tstate->exc_type;
@@ -15182,11 +28968,82 @@ static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb)
     Py_XDECREF(tmp_type);
     Py_XDECREF(tmp_value);
     Py_XDECREF(tmp_tb);
+#else
+    PyErr_SetExcInfo(type, value, tb);
+#endif
+}
+
+static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, long level) {
+    PyObject *py_import = 0;
+    PyObject *empty_list = 0;
+    PyObject *module = 0;
+    PyObject *global_dict = 0;
+    PyObject *empty_dict = 0;
+    PyObject *list;
+    py_import = __Pyx_GetAttrString(__pyx_b, "__import__");
+    if (!py_import)
+        goto bad;
+    if (from_list)
+        list = from_list;
+    else {
+        empty_list = PyList_New(0);
+        if (!empty_list)
+            goto bad;
+        list = empty_list;
+    }
+    global_dict = PyModule_GetDict(__pyx_m);
+    if (!global_dict)
+        goto bad;
+    empty_dict = PyDict_New();
+    if (!empty_dict)
+        goto bad;
+    #if PY_VERSION_HEX >= 0x02050000
+    {
+        #if PY_MAJOR_VERSION >= 3
+        if (level == -1) {
+            if (strchr(__Pyx_MODULE_NAME, '.')) {
+                /* try package relative import first */
+                PyObject *py_level = PyInt_FromLong(1);
+                if (!py_level)
+                    goto bad;
+                module = PyObject_CallFunctionObjArgs(py_import,
+                    name, global_dict, empty_dict, list, py_level, NULL);
+                Py_DECREF(py_level);
+                if (!module) {
+                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
+                        goto bad;
+                    PyErr_Clear();
+                }
+            }
+            level = 0; /* try absolute import on failure */
+        }
+        #endif
+        if (!module) {
+            PyObject *py_level = PyInt_FromLong(level);
+            if (!py_level)
+                goto bad;
+            module = PyObject_CallFunctionObjArgs(py_import,
+                name, global_dict, empty_dict, list, py_level, NULL);
+            Py_DECREF(py_level);
+        }
+    }
+    #else
+    if (level>0) {
+        PyErr_SetString(PyExc_RuntimeError, "Relative import is not supported for Python <=2.4.");
+        goto bad;
+    }
+    module = PyObject_CallFunctionObjArgs(py_import,
+        name, global_dict, empty_dict, list, NULL);
+    #endif
+bad:
+    Py_XDECREF(empty_list);
+    Py_XDECREF(py_import);
+    Py_XDECREF(empty_dict);
+    return module;
 }
 
 static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases) {
     PyObject *metaclass;
-    /* Default metaclass */
 #if PY_MAJOR_VERSION < 3
     if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
         PyObject *base = PyTuple_GET_ITEM(bases, 0);
@@ -15216,7 +29073,6 @@ static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *na
     PyObject *metaclass;
     if (PyDict_SetItemString(dict, "__module__", modname) < 0)
         return NULL;
-    /* Python2 __metaclass__ */
     metaclass = PyDict_GetItemString(dict, "__metaclass__");
     if (metaclass) {
         Py_INCREF(metaclass);
@@ -15228,6 +29084,58 @@ static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *na
     return result;
 }
 
+static CYTHON_INLINE WordID __Pyx_PyInt_from_py_WordID(PyObject* x) {
+    const WordID neg_one = (WordID)-1, const_zero = (WordID)0;
+    const int is_unsigned = const_zero < neg_one;
+    if (sizeof(WordID) == sizeof(char)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedChar(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedChar(x);
+    } else if (sizeof(WordID) == sizeof(short)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedShort(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedShort(x);
+    } else if (sizeof(WordID) == sizeof(int)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedInt(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedInt(x);
+    } else if (sizeof(WordID) == sizeof(long)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedLong(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedLong(x);
+    } else if (sizeof(WordID) == sizeof(PY_LONG_LONG)) {
+        if (is_unsigned)
+            return (WordID)__Pyx_PyInt_AsUnsignedLongLong(x);
+        else
+            return (WordID)__Pyx_PyInt_AsSignedLongLong(x);
+    }  else {
+        WordID val;
+        PyObject *v = __Pyx_PyNumber_Int(x);
+        #if PY_VERSION_HEX < 0x03000000
+        if (likely(v) && !PyLong_Check(v)) {
+            PyObject *tmp = v;
+            v = PyNumber_Long(tmp);
+            Py_DECREF(tmp);
+        }
+        #endif
+        if (likely(v)) {
+            int one = 1; int is_little = (int)*(unsigned char *)&one;
+            unsigned char *bytes = (unsigned char *)&val;
+            int ret = _PyLong_AsByteArray((PyLongObject *)v,
+                                          bytes, sizeof(val),
+                                          is_little, !is_unsigned);
+            Py_DECREF(v);
+            if (likely(!ret))
+                return val;
+        }
+        return (WordID)-1;
+    }
+}
+
 static PyObject* __Pyx_Globals() {
     Py_ssize_t i;
     /*PyObject *d;*/
@@ -15546,6 +29454,56 @@ __Pyx_CyFunction_repr(__pyx_CyFunctionObject *op)
                                PyString_AsString(func_name), (void *)op);
 #endif
 }
+#if CYTHON_COMPILING_IN_PYPY
+static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
+    PyCFunctionObject* f = (PyCFunctionObject*)func;
+    PyCFunction meth = PyCFunction_GET_FUNCTION(func);
+    PyObject *self = PyCFunction_GET_SELF(func);
+    Py_ssize_t size;
+    switch (PyCFunction_GET_FLAGS(func) & ~(METH_CLASS | METH_STATIC | METH_COEXIST)) {
+    case METH_VARARGS:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0)
+            return (*meth)(self, arg);
+        break;
+    case METH_VARARGS | METH_KEYWORDS:
+        return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
+    case METH_NOARGS:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0) {
+            size = PyTuple_GET_SIZE(arg);
+            if (size == 0)
+                return (*meth)(self, NULL);
+            PyErr_Format(PyExc_TypeError,
+                "%.200s() takes no arguments (%zd given)",
+                f->m_ml->ml_name, size);
+            return NULL;
+        }
+        break;
+    case METH_O:
+        if (likely(kw == NULL) || PyDict_Size(kw) == 0) {
+            size = PyTuple_GET_SIZE(arg);
+            if (size == 1)
+                return (*meth)(self, PyTuple_GET_ITEM(arg, 0));
+            PyErr_Format(PyExc_TypeError,
+                "%.200s() takes exactly one argument (%zd given)",
+                f->m_ml->ml_name, size);
+            return NULL;
+        }
+        break;
+    default:
+        PyErr_SetString(PyExc_SystemError, "Bad call flags in "
+                        "__Pyx_CyFunction_Call. METH_OLDARGS is no "
+                        "longer supported!");
+        return NULL;
+    }
+    PyErr_Format(PyExc_TypeError, "%.200s() takes no keyword arguments",
+                 f->m_ml->ml_name);
+    return NULL;
+}
+#else
+static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
+	return PyCFunction_Call(func, arg, kw);
+}
+#endif
 static PyTypeObject __pyx_CyFunctionType_type = {
     PyVarObject_HEAD_INIT(0, 0)
     __Pyx_NAMESTR("cython_function_or_method"), /*tp_name*/
@@ -15565,7 +29523,7 @@ static PyTypeObject __pyx_CyFunctionType_type = {
     0,                                  /*tp_as_sequence*/
     0,                                  /*tp_as_mapping*/
     0,                                  /*tp_hash*/
-    __Pyx_PyCFunction_Call,             /*tp_call*/
+    __Pyx_CyFunction_Call,              /*tp_call*/
     0,                                  /*tp_str*/
     0,                                  /*tp_getattro*/
     0,                                  /*tp_setattro*/
@@ -15601,15 +29559,16 @@ static PyTypeObject __pyx_CyFunctionType_type = {
     0,                                  /*tp_version_tag*/
 #endif
 };
-static int __Pyx_CyFunction_init(void)
-{
+static int __Pyx_CyFunction_init(void) {
+#if !CYTHON_COMPILING_IN_PYPY
+    __pyx_CyFunctionType_type.tp_call = PyCFunction_Call;
+#endif
     if (PyType_Ready(&__pyx_CyFunctionType_type) < 0)
         return -1;
     __pyx_CyFunctionType = &__pyx_CyFunctionType_type;
     return 0;
 }
-void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects)
-{
+static CYTHON_INLINE void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects) {
     __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
     m->defaults = PyMem_Malloc(size);
     if (!m->defaults)
@@ -15618,13 +29577,92 @@ void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects)
     m->defaults_pyobjects = pyobjects;
     return m->defaults;
 }
-static void __Pyx_CyFunction_SetDefaultsTuple(PyObject *func, PyObject *tuple)
-{
+static CYTHON_INLINE void __Pyx_CyFunction_SetDefaultsTuple(PyObject *func, PyObject *tuple) {
     __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
     m->defaults_tuple = tuple;
     Py_INCREF(tuple);
 }
 
+static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals) {
+#if CYTHON_COMPILING_IN_PYPY
+    return PyObject_RichCompareBool(s1, s2, equals);
+#else
+    if (s1 == s2) {
+        return (equals == Py_EQ);
+    } else if (PyBytes_CheckExact(s1) & PyBytes_CheckExact(s2)) {
+        if (PyBytes_GET_SIZE(s1) != PyBytes_GET_SIZE(s2)) {
+            return (equals == Py_NE);
+        } else if (PyBytes_GET_SIZE(s1) == 1) {
+            if (equals == Py_EQ)
+                return (PyBytes_AS_STRING(s1)[0] == PyBytes_AS_STRING(s2)[0]);
+            else
+                return (PyBytes_AS_STRING(s1)[0] != PyBytes_AS_STRING(s2)[0]);
+        } else {
+            int result = memcmp(PyBytes_AS_STRING(s1), PyBytes_AS_STRING(s2), (size_t)PyBytes_GET_SIZE(s1));
+            return (equals == Py_EQ) ? (result == 0) : (result != 0);
+        }
+    } else if ((s1 == Py_None) & PyBytes_CheckExact(s2)) {
+        return (equals == Py_NE);
+    } else if ((s2 == Py_None) & PyBytes_CheckExact(s1)) {
+        return (equals == Py_NE);
+    } else {
+        int result;
+        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
+        if (!py_result)
+            return -1;
+        result = __Pyx_PyObject_IsTrue(py_result);
+        Py_DECREF(py_result);
+        return result;
+    }
+#endif
+}
+
+static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals) {
+#if CYTHON_COMPILING_IN_PYPY
+    return PyObject_RichCompareBool(s1, s2, equals);
+#else
+    if (s1 == s2) {
+        return (equals == Py_EQ);
+    } else if (PyUnicode_CheckExact(s1) & PyUnicode_CheckExact(s2)) {
+        #if CYTHON_PEP393_ENABLED
+        if ((PyUnicode_READY(s1) < 0) || (PyUnicode_READY(s2) < 0))
+            return -1;
+        if (PyUnicode_GET_LENGTH(s1) != PyUnicode_GET_LENGTH(s2)) {
+            return (equals == Py_NE);
+        } else if (PyUnicode_GET_LENGTH(s1) == 1) {
+            Py_UCS4 ch1 = PyUnicode_READ_CHAR(s1, 0);
+            Py_UCS4 ch2 = PyUnicode_READ_CHAR(s2, 0);
+            return (equals == Py_EQ) ? (ch1 == ch2) : (ch1 != ch2);
+        #else
+        if (PyUnicode_GET_SIZE(s1) != PyUnicode_GET_SIZE(s2)) {
+            return (equals == Py_NE);
+        } else if (PyUnicode_GET_SIZE(s1) == 1) {
+            Py_UNICODE ch1 = PyUnicode_AS_UNICODE(s1)[0];
+            Py_UNICODE ch2 = PyUnicode_AS_UNICODE(s2)[0];
+            return (equals == Py_EQ) ? (ch1 == ch2) : (ch1 != ch2);
+        #endif
+        } else {
+            int result = PyUnicode_Compare(s1, s2);
+            if ((result == -1) && unlikely(PyErr_Occurred()))
+                return -1;
+            return (equals == Py_EQ) ? (result == 0) : (result != 0);
+        }
+    } else if ((s1 == Py_None) & PyUnicode_CheckExact(s2)) {
+        return (equals == Py_NE);
+    } else if ((s2 == Py_None) & PyUnicode_CheckExact(s1)) {
+        return (equals == Py_NE);
+    } else {
+        int result;
+        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
+        if (!py_result)
+            return -1;
+        result = __Pyx_PyObject_IsTrue(py_result);
+        Py_DECREF(py_result);
+        return result;
+    }
+#endif
+}
+
 static CYTHON_INLINE unsigned char __Pyx_PyInt_AsUnsignedChar(PyObject* x) {
     const unsigned char neg_one = (unsigned char)-1, const_zero = 0;
     const int is_unsigned = neg_one > const_zero;
@@ -16025,8 +30063,28 @@ static CYTHON_INLINE signed PY_LONG_LONG __Pyx_PyInt_AsSignedLongLong(PyObject*
     }
 }
 
+static void __Pyx_WriteUnraisable(const char *name, CYTHON_UNUSED int clineno,
+                                  CYTHON_UNUSED int lineno, CYTHON_UNUSED const char *filename) {
+    PyObject *old_exc, *old_val, *old_tb;
+    PyObject *ctx;
+    __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
+    #if PY_MAJOR_VERSION < 3
+    ctx = PyString_FromString(name);
+    #else
+    ctx = PyUnicode_FromString(name);
+    #endif
+    __Pyx_ErrRestore(old_exc, old_val, old_tb);
+    if (!ctx) {
+        PyErr_WriteUnraisable(Py_None);
+    } else {
+        PyErr_WriteUnraisable(ctx);
+        Py_DECREF(ctx);
+    }
+}
+
 static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb) {
     PyObject *tmp_type, *tmp_value, *tmp_tb;
+#if CYTHON_COMPILING_IN_CPYTHON
     PyThreadState *tstate = PyThreadState_GET();
     tmp_type = tstate->exc_type;
     tmp_value = tstate->exc_value;
@@ -16034,6 +30092,10 @@ static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value,
     tstate->exc_type = *type;
     tstate->exc_value = *value;
     tstate->exc_traceback = *tb;
+#else
+    PyErr_GetExcInfo(&tmp_type, &tmp_value, &tmp_tb);
+    PyErr_SetExcInfo(*type, *value, *tb);
+#endif
     *type = tmp_type;
     *value = tmp_value;
     *tb = tmp_tb;
@@ -16043,9 +30105,70 @@ static PyObject *__Pyx_Generator_Next(PyObject *self);
 static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value);
 static PyObject *__Pyx_Generator_Close(PyObject *self);
 static PyObject *__Pyx_Generator_Throw(PyObject *gen, PyObject *args);
+static PyTypeObject *__pyx_GeneratorType = 0;
+#define __Pyx_Generator_CheckExact(obj) (Py_TYPE(obj) == __pyx_GeneratorType)
+#define __Pyx_Generator_Undelegate(gen) Py_CLEAR((gen)->yieldfrom)
+#if 1 || PY_VERSION_HEX < 0x030300B0
+static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
+    PyObject *et, *ev, *tb;
+    PyObject *value = NULL;
+    __Pyx_ErrFetch(&et, &ev, &tb);
+    if (!et) {
+        Py_XDECREF(tb);
+        Py_XDECREF(ev);
+        Py_INCREF(Py_None);
+        *pvalue = Py_None;
+        return 0;
+    }
+    if (unlikely(et != PyExc_StopIteration) &&
+            unlikely(!PyErr_GivenExceptionMatches(et, PyExc_StopIteration))) {
+        __Pyx_ErrRestore(et, ev, tb);
+        return -1;
+    }
+    if (likely(et == PyExc_StopIteration)) {
+        if (likely(!ev) || !PyObject_IsInstance(ev, PyExc_StopIteration)) {
+            if (!ev) {
+                Py_INCREF(Py_None);
+                ev = Py_None;
+            }
+            Py_XDECREF(tb);
+            Py_DECREF(et);
+            *pvalue = ev;
+            return 0;
+        }
+    }
+    PyErr_NormalizeException(&et, &ev, &tb);
+    if (unlikely(!PyObject_IsInstance(ev, PyExc_StopIteration))) {
+        __Pyx_ErrRestore(et, ev, tb);
+        return -1;
+    }
+    Py_XDECREF(tb);
+    Py_DECREF(et);
+#if PY_VERSION_HEX >= 0x030300A0
+    value = ((PyStopIterationObject *)ev)->value;
+    Py_INCREF(value);
+    Py_DECREF(ev);
+#else
+    {
+        PyObject* args = PyObject_GetAttrString(ev, "args");
+        Py_DECREF(ev);
+        if (likely(args)) {
+            value = PyObject_GetItem(args, 0);
+            Py_DECREF(args);
+        }
+        if (unlikely(!value)) {
+            __Pyx_ErrRestore(NULL, NULL, NULL);
+            Py_INCREF(Py_None);
+            value = Py_None;
+        }
+    }
+#endif
+    *pvalue = value;
+    return 0;
+}
+#endif
 static CYTHON_INLINE
-void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self)
-{
+void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self) {
     PyObject *exc_type = self->exc_type;
     PyObject *exc_value = self->exc_value;
     PyObject *exc_traceback = self->exc_traceback;
@@ -16057,14 +30180,18 @@ void __Pyx_Generator_ExceptionClear(__pyx_GeneratorObject *self)
     Py_XDECREF(exc_traceback);
 }
 static CYTHON_INLINE
-PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value)
-{
-    PyObject *retval;
-    if (unlikely(self->is_running)) {
+int __Pyx_Generator_CheckRunning(__pyx_GeneratorObject *gen) {
+    if (unlikely(gen->is_running)) {
         PyErr_SetString(PyExc_ValueError,
                         "generator already executing");
-        return NULL;
+        return 1;
     }
+    return 0;
+}
+static CYTHON_INLINE
+PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value) {
+    PyObject *retval;
+    assert(!self->is_running);
     if (unlikely(self->resume_label == 0)) {
         if (unlikely(value && value != Py_None)) {
             PyErr_SetString(PyExc_TypeError,
@@ -16077,81 +30204,240 @@ PyObject *__Pyx_Generator_SendEx(__pyx_GeneratorObject *self, PyObject *value)
         PyErr_SetNone(PyExc_StopIteration);
         return NULL;
     }
-    if (value)
-        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value, &self->exc_traceback);
-    else
+    if (value) {
+#if CYTHON_COMPILING_IN_PYPY
+#else
+        /* Generators always return to their most recent caller, not
+         * necessarily their creator. */
+        if (self->exc_traceback) {
+            PyThreadState *tstate = PyThreadState_GET();
+            PyTracebackObject *tb = (PyTracebackObject *) self->exc_traceback;
+            PyFrameObject *f = tb->tb_frame;
+            Py_XINCREF(tstate->frame);
+            assert(f->f_back == NULL);
+            f->f_back = tstate->frame;
+        }
+#endif
+        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value,
+                            &self->exc_traceback);
+    } else {
         __Pyx_Generator_ExceptionClear(self);
+    }
     self->is_running = 1;
     retval = self->body((PyObject *) self, value);
     self->is_running = 0;
-    if (retval)
-        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value, &self->exc_traceback);
-    else
+    if (retval) {
+        __Pyx_ExceptionSwap(&self->exc_type, &self->exc_value,
+                            &self->exc_traceback);
+#if CYTHON_COMPILING_IN_PYPY
+#else
+        /* Don't keep the reference to f_back any longer than necessary.  It
+         * may keep a chain of frames alive or it could create a reference
+         * cycle. */
+        if (self->exc_traceback) {
+            PyTracebackObject *tb = (PyTracebackObject *) self->exc_traceback;
+            PyFrameObject *f = tb->tb_frame;
+            Py_CLEAR(f->f_back);
+        }
+#endif
+    } else {
         __Pyx_Generator_ExceptionClear(self);
+    }
     return retval;
 }
-static PyObject *__Pyx_Generator_Next(PyObject *self)
-{
-    return __Pyx_Generator_SendEx((__pyx_GeneratorObject *) self, Py_None);
+static CYTHON_INLINE
+PyObject *__Pyx_Generator_FinishDelegation(__pyx_GeneratorObject *gen) {
+    PyObject *ret;
+    PyObject *val = NULL;
+    __Pyx_Generator_Undelegate(gen);
+    __Pyx_PyGen_FetchStopIterationValue(&val);
+    ret = __Pyx_Generator_SendEx(gen, val);
+    Py_XDECREF(val);
+    return ret;
+}
+static PyObject *__Pyx_Generator_Next(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject*) self;
+    PyObject *yf = gen->yieldfrom;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        gen->is_running = 1;
+        ret = Py_TYPE(yf)->tp_iternext(yf);
+        gen->is_running = 0;
+        if (likely(ret)) {
+            return ret;
+        }
+        return __Pyx_Generator_FinishDelegation(gen);
+    }
+    return __Pyx_Generator_SendEx(gen, Py_None);
 }
-static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value)
-{
-    return __Pyx_Generator_SendEx((__pyx_GeneratorObject *) self, value);
+static PyObject *__Pyx_Generator_Send(PyObject *self, PyObject *value) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject*) self;
+    PyObject *yf = gen->yieldfrom;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        gen->is_running = 1;
+        if (__Pyx_Generator_CheckExact(yf)) {
+            ret = __Pyx_Generator_Send(yf, value);
+        } else {
+            if (value == Py_None)
+                ret = PyIter_Next(yf);
+            else
+                ret = PyObject_CallMethod(yf, (char*)"send", (char*)"O", value);
+        }
+        gen->is_running = 0;
+        if (likely(ret)) {
+            return ret;
+        }
+        return __Pyx_Generator_FinishDelegation(gen);
+    }
+    return __Pyx_Generator_SendEx(gen, value);
+}
+static int __Pyx_Generator_CloseIter(__pyx_GeneratorObject *gen, PyObject *yf) {
+    PyObject *retval = NULL;
+    int err = 0;
+    if (__Pyx_Generator_CheckExact(yf)) {
+        retval = __Pyx_Generator_Close(yf);
+        if (!retval)
+            return -1;
+    } else {
+        PyObject *meth;
+        gen->is_running = 1;
+        meth = PyObject_GetAttrString(yf, "close");
+        if (unlikely(!meth)) {
+            if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                PyErr_WriteUnraisable(yf);
+            }
+            PyErr_Clear();
+        } else {
+            retval = PyObject_CallFunction(meth, NULL);
+            Py_DECREF(meth);
+            if (!retval)
+                err = -1;
+        }
+        gen->is_running = 0;
+    }
+    Py_XDECREF(retval);
+    return err;
 }
-static PyObject *__Pyx_Generator_Close(PyObject *self)
-{
-    __pyx_GeneratorObject *generator = (__pyx_GeneratorObject *) self;
-    PyObject *retval;
+static PyObject *__Pyx_Generator_Close(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
+    PyObject *retval, *raised_exception;
+    PyObject *yf = gen->yieldfrom;
+    int err = 0;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        Py_INCREF(yf);
+        err = __Pyx_Generator_CloseIter(gen, yf);
+        __Pyx_Generator_Undelegate(gen);
+        Py_DECREF(yf);
+    }
+    if (err == 0)
 #if PY_VERSION_HEX < 0x02050000
-    PyErr_SetNone(PyExc_StopIteration);
+        PyErr_SetNone(PyExc_StopIteration);
 #else
-    PyErr_SetNone(PyExc_GeneratorExit);
+        PyErr_SetNone(PyExc_GeneratorExit);
 #endif
-    retval = __Pyx_Generator_SendEx(generator, NULL);
+    retval = __Pyx_Generator_SendEx(gen, NULL);
     if (retval) {
         Py_DECREF(retval);
         PyErr_SetString(PyExc_RuntimeError,
                         "generator ignored GeneratorExit");
         return NULL;
     }
-#if PY_VERSION_HEX < 0x02050000
-    if (PyErr_ExceptionMatches(PyExc_StopIteration))
-#else
-    if (PyErr_ExceptionMatches(PyExc_StopIteration)
-        || PyErr_ExceptionMatches(PyExc_GeneratorExit))
+    raised_exception = PyErr_Occurred();
+    if (!raised_exception
+        || raised_exception == PyExc_StopIteration
+#if PY_VERSION_HEX >= 0x02050000
+        || raised_exception == PyExc_GeneratorExit
+        || PyErr_GivenExceptionMatches(raised_exception, PyExc_GeneratorExit)
 #endif
+        || PyErr_GivenExceptionMatches(raised_exception, PyExc_StopIteration))
     {
-        PyErr_Clear();          /* ignore these errors */
+        if (raised_exception) PyErr_Clear();      /* ignore these errors */
         Py_INCREF(Py_None);
         return Py_None;
     }
     return NULL;
 }
-static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args)
-{
-    __pyx_GeneratorObject *generator = (__pyx_GeneratorObject *) self;
+static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     PyObject *typ;
     PyObject *tb = NULL;
     PyObject *val = NULL;
+    PyObject *yf = gen->yieldfrom;
     if (!PyArg_UnpackTuple(args, (char *)"throw", 1, 3, &typ, &val, &tb))
         return NULL;
+    if (unlikely(__Pyx_Generator_CheckRunning(gen)))
+        return NULL;
+    if (yf) {
+        PyObject *ret;
+        Py_INCREF(yf);
+#if PY_VERSION_HEX >= 0x02050000
+        if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit)) {
+            int err = __Pyx_Generator_CloseIter(gen, yf);
+            Py_DECREF(yf);
+            __Pyx_Generator_Undelegate(gen);
+            if (err < 0)
+                return __Pyx_Generator_SendEx(gen, NULL);
+            goto throw_here;
+        }
+#endif
+        gen->is_running = 1;
+        if (__Pyx_Generator_CheckExact(yf)) {
+            ret = __Pyx_Generator_Throw(yf, args);
+        } else {
+            PyObject *meth = PyObject_GetAttrString(yf, "throw");
+            if (unlikely(!meth)) {
+                Py_DECREF(yf);
+                if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                    gen->is_running = 0;
+                    return NULL;
+                }
+                PyErr_Clear();
+                __Pyx_Generator_Undelegate(gen);
+                gen->is_running = 0;
+                goto throw_here;
+            }
+            ret = PyObject_CallObject(meth, args);
+            Py_DECREF(meth);
+        }
+        gen->is_running = 0;
+        Py_DECREF(yf);
+        if (!ret) {
+            ret = __Pyx_Generator_FinishDelegation(gen);
+        }
+        return ret;
+    }
+throw_here:
     __Pyx_Raise(typ, val, tb, NULL);
-    return __Pyx_Generator_SendEx(generator, NULL);
+    return __Pyx_Generator_SendEx(gen, NULL);
 }
-static int
-__Pyx_Generator_traverse(PyObject *self, visitproc visit, void *arg)
-{
+static int __Pyx_Generator_traverse(PyObject *self, visitproc visit, void *arg) {
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     Py_VISIT(gen->closure);
     Py_VISIT(gen->classobj);
+    Py_VISIT(gen->yieldfrom);
     Py_VISIT(gen->exc_type);
     Py_VISIT(gen->exc_value);
     Py_VISIT(gen->exc_traceback);
     return 0;
 }
-static void
-__Pyx_Generator_dealloc(PyObject *self)
-{
+static int __Pyx_Generator_clear(PyObject *self) {
+    __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
+    Py_CLEAR(gen->closure);
+    Py_CLEAR(gen->classobj);
+    Py_CLEAR(gen->yieldfrom);
+    Py_CLEAR(gen->exc_type);
+    Py_CLEAR(gen->exc_value);
+    Py_CLEAR(gen->exc_traceback);
+    return 0;
+}
+static void __Pyx_Generator_dealloc(PyObject *self) {
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
     PyObject_GC_UnTrack(gen);
     if (gen->gi_weakreflist != NULL)
@@ -16163,16 +30449,10 @@ __Pyx_Generator_dealloc(PyObject *self)
             return;                     /* resurrected.  :( */
     }
     PyObject_GC_UnTrack(self);
-    Py_CLEAR(gen->closure);
-    Py_CLEAR(gen->classobj);
-    Py_CLEAR(gen->exc_type);
-    Py_CLEAR(gen->exc_value);
-    Py_CLEAR(gen->exc_traceback);
+    __Pyx_Generator_clear(self);
     PyObject_GC_Del(gen);
 }
-static void
-__Pyx_Generator_del(PyObject *self)
-{
+static void __Pyx_Generator_del(PyObject *self) {
     PyObject *res;
     PyObject *error_type, *error_value, *error_traceback;
     __pyx_GeneratorObject *gen = (__pyx_GeneratorObject *) self;
@@ -16201,11 +30481,13 @@ __Pyx_Generator_del(PyObject *self)
         _Py_NewReference(self);
         self->ob_refcnt = refcnt;
     }
+#if CYTHON_COMPILING_FOR_CPYTHON
     assert(PyType_IS_GC(self->ob_type) &&
            _Py_AS_GC(self)->gc.gc_refs != _PyGC_REFS_UNTRACKED);
     /* If Py_REF_DEBUG, _Py_NewReference bumped _Py_RefTotal, so
      * we need to undo that. */
     _Py_DEC_REFTOTAL;
+#endif
     /* If Py_TRACE_REFS, _Py_NewReference re-added self to the object
      * chain, so no more to do there.
      * If COUNT_ALLOCS, the original decref bumped tp_frees, and
@@ -16213,13 +30495,17 @@ __Pyx_Generator_del(PyObject *self)
      * undone.
      */
 #ifdef COUNT_ALLOCS
-    --self->ob_type->tp_frees;
-    --self->ob_type->tp_allocs;
+    --Py_TYPE(self)->tp_frees;
+    --Py_TYPE(self)->tp_allocs;
 #endif
 }
 static PyMemberDef __pyx_Generator_memberlist[] = {
     {(char *) "gi_running",
+#if PY_VERSION_HEX >= 0x02060000
+     T_BOOL,
+#else
      T_INT,
+#endif
      offsetof(__pyx_GeneratorObject, is_running),
      READONLY,
      NULL},
@@ -16231,7 +30517,7 @@ static PyMethodDef __pyx_Generator_methods[] = {
     {__Pyx_NAMESTR("close"), (PyCFunction) __Pyx_Generator_Close, METH_NOARGS, 0},
     {0, 0, 0, 0}
 };
-static PyTypeObject __pyx_GeneratorType = {
+static PyTypeObject __pyx_GeneratorType_type = {
     PyVarObject_HEAD_INIT(0, 0)
     __Pyx_NAMESTR("generator"),         /*tp_name*/
     sizeof(__pyx_GeneratorObject),      /*tp_basicsize*/
@@ -16252,7 +30538,7 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_hash*/
     0,                                  /*tp_call*/
     0,                                  /*tp_str*/
-    PyObject_GenericGetAttr,            /*tp_getattro*/
+    0,                                  /*tp_getattro*/
     0,                                  /*tp_setattro*/
     0,                                  /*tp_as_buffer*/
     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags*/
@@ -16261,7 +30547,7 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_clear*/
     0,                                  /*tp_richcompare*/
     offsetof(__pyx_GeneratorObject, gi_weakreflist), /* tp_weaklistoffse */
-    PyObject_SelfIter,                  /*tp_iter*/
+    0,                                  /*tp_iter*/
     (iternextfunc) __Pyx_Generator_Next, /*tp_iternext*/
     __pyx_Generator_methods,            /*tp_methods*/
     __pyx_Generator_memberlist,         /*tp_members*/
@@ -16286,12 +30572,10 @@ static PyTypeObject __pyx_GeneratorType = {
     0,                                  /*tp_version_tag*/
 #endif
 };
-static
-__pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
-                                           PyObject *closure)
-{
+static __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
+                                                  PyObject *closure) {
     __pyx_GeneratorObject *gen =
-        PyObject_GC_New(__pyx_GeneratorObject, &__pyx_GeneratorType);
+        PyObject_GC_New(__pyx_GeneratorObject, &__pyx_GeneratorType_type);
     if (gen == NULL)
         return NULL;
     gen->body = body;
@@ -16300,6 +30584,7 @@ __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
     gen->is_running = 0;
     gen->resume_label = 0;
     gen->classobj = NULL;
+    gen->yieldfrom = NULL;
     gen->exc_type = NULL;
     gen->exc_value = NULL;
     gen->exc_traceback = NULL;
@@ -16307,28 +30592,14 @@ __pyx_GeneratorObject *__Pyx_Generator_New(__pyx_generator_body_t body,
     PyObject_GC_Track(gen);
     return gen;
 }
-static int __pyx_Generator_init(void)
-{
-    return PyType_Ready(&__pyx_GeneratorType);
-}
-
-static void __Pyx_WriteUnraisable(const char *name, int clineno,
-                                  int lineno, const char *filename) {
-    PyObject *old_exc, *old_val, *old_tb;
-    PyObject *ctx;
-    __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
-    #if PY_MAJOR_VERSION < 3
-    ctx = PyString_FromString(name);
-    #else
-    ctx = PyUnicode_FromString(name);
-    #endif
-    __Pyx_ErrRestore(old_exc, old_val, old_tb);
-    if (!ctx) {
-        PyErr_WriteUnraisable(Py_None);
-    } else {
-        PyErr_WriteUnraisable(ctx);
-        Py_DECREF(ctx);
+static int __pyx_Generator_init(void) {
+    __pyx_GeneratorType_type.tp_getattro = PyObject_GenericGetAttr;
+    __pyx_GeneratorType_type.tp_iter = PyObject_SelfIter;
+    if (PyType_Ready(&__pyx_GeneratorType_type)) {
+        return -1;
     }
+    __pyx_GeneratorType = &__pyx_GeneratorType_type;
+    return 0;
 }
 
 static int __Pyx_check_binary_version(void) {
@@ -16350,6 +30621,164 @@ static int __Pyx_check_binary_version(void) {
     return 0;
 }
 
+static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
+#if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
+    PyObject *ob = PyCapsule_New(vtable, 0, 0);
+#else
+    PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
+#endif
+    if (!ob)
+        goto bad;
+    if (PyDict_SetItemString(dict, "__pyx_vtable__", ob) < 0)
+        goto bad;
+    Py_DECREF(ob);
+    return 0;
+bad:
+    Py_XDECREF(ob);
+    return -1;
+}
+
+#ifndef __PYX_HAVE_RT_ImportType
+#define __PYX_HAVE_RT_ImportType
+static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name,
+    size_t size, int strict)
+{
+    PyObject *py_module = 0;
+    PyObject *result = 0;
+    PyObject *py_name = 0;
+    char warning[200];
+    py_module = __Pyx_ImportModule(module_name);
+    if (!py_module)
+        goto bad;
+    py_name = __Pyx_PyIdentifier_FromString(class_name);
+    if (!py_name)
+        goto bad;
+    result = PyObject_GetAttr(py_module, py_name);
+    Py_DECREF(py_name);
+    py_name = 0;
+    Py_DECREF(py_module);
+    py_module = 0;
+    if (!result)
+        goto bad;
+    if (!PyType_Check(result)) {
+        PyErr_Format(PyExc_TypeError,
+            "%s.%s is not a type object",
+            module_name, class_name);
+        goto bad;
+    }
+    if (!strict && (size_t)((PyTypeObject *)result)->tp_basicsize > size) {
+        PyOS_snprintf(warning, sizeof(warning),
+            "%s.%s size changed, may indicate binary incompatibility",
+            module_name, class_name);
+        #if PY_VERSION_HEX < 0x02050000
+        if (PyErr_Warn(NULL, warning) < 0) goto bad;
+        #else
+        if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
+        #endif
+    }
+    else if ((size_t)((PyTypeObject *)result)->tp_basicsize != size) {
+        PyErr_Format(PyExc_ValueError,
+            "%s.%s has the wrong size, try recompiling",
+            module_name, class_name);
+        goto bad;
+    }
+    return (PyTypeObject *)result;
+bad:
+    Py_XDECREF(py_module);
+    Py_XDECREF(result);
+    return NULL;
+}
+#endif
+
+#ifndef __PYX_HAVE_RT_ImportModule
+#define __PYX_HAVE_RT_ImportModule
+static PyObject *__Pyx_ImportModule(const char *name) {
+    PyObject *py_name = 0;
+    PyObject *py_module = 0;
+    py_name = __Pyx_PyIdentifier_FromString(name);
+    if (!py_name)
+        goto bad;
+    py_module = PyImport_Import(py_name);
+    Py_DECREF(py_name);
+    return py_module;
+bad:
+    Py_XDECREF(py_name);
+    return 0;
+}
+#endif
+
+static void* __Pyx_GetVtable(PyObject *dict) {
+    void* ptr;
+    PyObject *ob = PyMapping_GetItemString(dict, (char *)"__pyx_vtable__");
+    if (!ob)
+        goto bad;
+#if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
+    ptr = PyCapsule_GetPointer(ob, 0);
+#else
+    ptr = PyCObject_AsVoidPtr(ob);
+#endif
+    if (!ptr && !PyErr_Occurred())
+        PyErr_SetString(PyExc_RuntimeError, "invalid vtable found for imported type");
+    Py_DECREF(ob);
+    return ptr;
+bad:
+    Py_XDECREF(ob);
+    return NULL;
+}
+
+#ifndef __PYX_HAVE_RT_ImportFunction
+#define __PYX_HAVE_RT_ImportFunction
+static int __Pyx_ImportFunction(PyObject *module, const char *funcname, void (**f)(void), const char *sig) {
+    PyObject *d = 0;
+    PyObject *cobj = 0;
+    union {
+        void (*fp)(void);
+        void *p;
+    } tmp;
+    d = PyObject_GetAttrString(module, (char *)"__pyx_capi__");
+    if (!d)
+        goto bad;
+    cobj = PyDict_GetItemString(d, funcname);
+    if (!cobj) {
+        PyErr_Format(PyExc_ImportError,
+            "%s does not export expected C function %s",
+                PyModule_GetName(module), funcname);
+        goto bad;
+    }
+#if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
+    if (!PyCapsule_IsValid(cobj, sig)) {
+        PyErr_Format(PyExc_TypeError,
+            "C function %s.%s has wrong signature (expected %s, got %s)",
+             PyModule_GetName(module), funcname, sig, PyCapsule_GetName(cobj));
+        goto bad;
+    }
+    tmp.p = PyCapsule_GetPointer(cobj, sig);
+#else
+    {const char *desc, *s1, *s2;
+    desc = (const char *)PyCObject_GetDesc(cobj);
+    if (!desc)
+        goto bad;
+    s1 = desc; s2 = sig;
+    while (*s1 != '\0' && *s1 == *s2) { s1++; s2++; }
+    if (*s1 != *s2) {
+        PyErr_Format(PyExc_TypeError,
+            "C function %s.%s has wrong signature (expected %s, got %s)",
+             PyModule_GetName(module), funcname, sig, desc);
+        goto bad;
+    }
+    tmp.p = PyCObject_AsVoidPtr(cobj);}
+#endif
+    *f = tmp.fp;
+    if (!(*f))
+        goto bad;
+    Py_DECREF(d);
+    return 0;
+bad:
+    Py_XDECREF(d);
+    return -1;
+}
+#endif
+
 static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
     int start = 0, mid = 0, end = count - 1;
     if (end >= 0 && code_line > entries[end].code_line) {