Merge branch 'master' of github.com:pks/cdec-dtrain

56 files changed, 10775 insertions, 5121 deletions

diff --git a/Makefile.am b/Makefile.am
index 38a9f83d..e017fba7 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,8 +5,8 @@ SUBDIRS = \
   utils \
   mteval \
   klm/util/double-conversion \
-  klm/util/stream \
   klm/util \
+  klm/util/stream \
   klm/lm \
   klm/lm/builder \
   klm/search \
diff --git a/corpus/filter-length.pl b/corpus/filter-length.pl
index 38837f14..2e257cda 100755
--- a/corpus/filter-length.pl
+++ b/corpus/filter-length.pl
@@ -44,11 +44,11 @@ while(<F>) {
   $lines++;
   if ($lines % 100000 == 0) { print STDERR " [$lines]\n"; }
   elsif ($lines % 2500 == 0) { print STDERR "."; }
-  my ($sf, $se, @d) = split / \|\|\| /;
+  my ($sf, $se, @d) = split /\s*\|\|\|\s*/;
   if (scalar @d != 0 or !defined $se) {
     $bad_format++;
     if ($bad_format > 100 && ($bad_format / $lines) > 0.02) {
-      die "Corpus appears to be incorretly formatted, example: $_";
+      die "$bad_format / $lines : Corpus appears to be incorretly formatted, example: $_";
     }
     next;
   }
diff --git a/corpus/paste-files.pl b/corpus/paste-files.pl
index 0b788386..4cb424ad 100755
--- a/corpus/paste-files.pl
+++ b/corpus/paste-files.pl
@@ -41,9 +41,9 @@ while(1) {
     }
     warn "$ARGV[$anum]:$lc contains a ||| symbol - please remove.\n" if $r =~ /\|\|\|/;
     $r =~ s/\|\|\|/ /g;
-    $r =~ s/  +//g;
-    $r =~ s/^ //;
-    $r =~ s/ $//;
+    $r =~ s/\s+/ /g;
+    $r =~ s/^ +//;
+    $r =~ s/ +$//;
     $anum++;
     push @line, $r;
   }
@@ -56,5 +56,5 @@ for (my $i = 1; $i < scalar @fhs; $i++) {
   my $r = <$fh>;
   die "Mismatched number of lines.\n" if defined $r;
 }
-print STDERR "Bad lines containing ||| were $bad\n";
+print STDERR "Number of lines containing ||| was: $bad\n" if $bad > 0;
 
diff --git a/corpus/support/quote-norm.pl b/corpus/support/quote-norm.pl
index 72b0064d..e4e5055e 100755
--- a/corpus/support/quote-norm.pl
+++ b/corpus/support/quote-norm.pl
@@ -27,6 +27,20 @@ while(<STDIN>) {
   s/¨/"/g;
   s/¡/ ¡ /g;
   s/¿/ ¿ /g;
+
+  s/ п. п. / п.п. /g;
+  s/ ст. л. / ст.л. /g;
+  s/ т. е. / т.е. /g;
+  s/ т. к. / т.к. /g;
+  s/ т. ч. / т.ч. /g;
+  s/ т. д. / т.д. /g;
+  s/ т. п. / т.п. /g;
+  s/ и. о. / и.о. /g;
+  s/ с. г. / с.г. /g;
+  s/ г. р. / г.р. /g;
+  s/ т. н. / т.н. /g;
+  s/ т. ч. / т.ч. /g;
+  s/ н. э. / н.э. /g;
   # â<U+0080><U+0099>
   s/â(\x{80}\x{99}|\x{80}\x{98})/'/g;
   s/â(\x{80}\x{9c}|\x{80}\x{9d})/"/g;
diff --git a/corpus/support/token_list b/corpus/support/token_list
index 28eb4396..d470cb22 100644
--- a/corpus/support/token_list
+++ b/corpus/support/token_list
@@ -210,3 +210,85 @@ W.
 X.
 Y.
 Z.
+А.
+Б.
+В.
+Г.
+Д.
+Е.
+Ё.
+Ж.
+З.
+И.
+Й.
+К.
+Л.
+М.
+Н.
+О.
+П.
+Р.
+С.
+Т.
+У.
+Ф.
+Х.
+Ц.
+Ч.
+Ш.
+Щ.
+Ъ.
+Ы.
+Ь.
+Э.
+Ю.
+Я.
+л.
+г.
+обл.
+гг.
+в.
+вв.
+мин.
+ч.
+тыс.
+млн.
+млрд.
+трлн.
+кв.
+куб.
+руб.
+коп.
+долл.
+Прим.
+прим.
+чел.
+грн.
+мин.
+им.
+проф.
+акад.
+ред.
+авт.
+корр.
+соб.
+спец.
+см.
+тж.
+др.
+пр.
+букв.
+# Two-letter abbreviations - can be written with space
+п.п.
+ст.л.
+т.е.
+т.к.
+т.ч.
+т.д.
+т.п.
+и.о.
+с.г.
+г.р.
+т.н.
+т.ч.
+н.э.
diff --git a/corpus/support/token_patterns b/corpus/support/token_patterns
index 8e69432b..de64fb2a 100644
--- a/corpus/support/token_patterns
+++ b/corpus/support/token_patterns
@@ -1,3 +1,5 @@
 /^(al|el|ul|e)\-[a-z]+$/
+/^((а|А)(ль|ш)|уль)-\p{Cyrillic}+$/
+/^\p{Cyrillic}\.\p{Cyrillic}\.$/
 /^(\d|\d\d|\d\d\d)\.$/
 
diff --git a/corpus/support/tokenizer.pl b/corpus/support/tokenizer.pl
index e9c3a37d..0350a894 100755
--- a/corpus/support/tokenizer.pl
+++ b/corpus/support/tokenizer.pl
@@ -73,6 +73,7 @@ my $dict_file = "$workdir/token_list";
 my $word_patt_file = "$workdir/token_patterns";
 
 open(my $dict_fp, "$dict_file") or die;
+binmode($dict_fp, ":utf8");
 
 # read in the list of words that should not be segmented, 
 ##  e.g.,"I.B.M.", co-operation.
@@ -89,6 +90,7 @@ while(<$dict_fp>){
 }
 
 open(my $patt_fp, "$word_patt_file") or die;
+binmode($patt_fp, ":utf8");
 my @word_patts = ();
 my $word_patt_num = 0;
 while(<$patt_fp>){
@@ -147,7 +149,6 @@ while(<STDIN>){
 
     print STDOUT " $new_line\n";
 }
-print STDERR "\n";
 
 ########################################################################
    
diff --git a/klm/lm/Makefile.am b/klm/lm/Makefile.am
index f15cbd77..48b0ba34 100644
--- a/klm/lm/Makefile.am
+++ b/klm/lm/Makefile.am
@@ -1,8 +1,11 @@
-bin_PROGRAMS = build_binary
+bin_PROGRAMS = build_binary ngram_query
 
-build_binary_SOURCES = build_binary.cc
+build_binary_SOURCES = build_binary_main.cc
 build_binary_LDADD = libklm.a ../util/libklm_util.a ../util/double-conversion/libklm_util_double.a -lz
 
+ngram_query_SOURCES = query_main.cc
+ngram_query_LDADD = libklm.a ../util/libklm_util.a ../util/double-conversion/libklm_util_double.a -lz
+
 #noinst_PROGRAMS = \
 #  ngram_test
 #TESTS = ngram_test
@@ -46,7 +49,6 @@ libklm_a_SOURCES = \
   lm_exception.cc \
 	quantize.cc \
   model.cc \
-  ngram_query.cc \
   read_arpa.cc \
   search_hashed.cc \
   search_trie.cc \
diff --git a/klm/lm/build_binary.cc b/klm/lm/build_binary_main.cc
index ab2c0c32..ab2c0c32 100644
--- a/klm/lm/build_binary.cc
+++ b/klm/lm/build_binary_main.cc
diff --git a/klm/lm/builder/Makefile.am b/klm/lm/builder/Makefile.am
index b5c147fd..317e03ce 100644
--- a/klm/lm/builder/Makefile.am
+++ b/klm/lm/builder/Makefile.am
@@ -1,7 +1,7 @@
 bin_PROGRAMS = builder
 
 builder_SOURCES = \
-  main.cc \
+  lmplz_main.cc \
   adjust_counts.cc \
   adjust_counts.hh \
   corpus_count.cc \
diff --git a/klm/lm/builder/discount.hh b/klm/lm/builder/discount.hh
index 754fb20d..4d0aa4fd 100644
--- a/klm/lm/builder/discount.hh
+++ b/klm/lm/builder/discount.hh
@@ -3,7 +3,7 @@
 
 #include <algorithm>
 
-#include <inttypes.h>
+#include <stdint.h>
 
 namespace lm {
 namespace builder {
diff --git a/klm/lm/builder/main.cc b/klm/lm/builder/lmplz_main.cc
index 90b9dca2..90b9dca2 100644
--- a/klm/lm/builder/main.cc
+++ b/klm/lm/builder/lmplz_main.cc
diff --git a/klm/lm/filter/main.cc b/klm/lm/filter/filter_main.cc
index c42243e2..1a4ba84f 100644
--- a/klm/lm/filter/main.cc
+++ b/klm/lm/filter/filter_main.cc
@@ -53,7 +53,7 @@ void DisplayHelp(const char *name) {
     "    stream i.e. /dev/stdout\n";
 }
 
-typedef enum {MODE_COPY, MODE_SINGLE, MODE_MULTIPLE, MODE_UNION} FilterMode;
+typedef enum {MODE_COPY, MODE_SINGLE, MODE_MULTIPLE, MODE_UNION, MODE_UNSET} FilterMode;
 typedef enum {FORMAT_ARPA, FORMAT_COUNT} Format;
 
 struct Config {
@@ -162,19 +162,19 @@ int main(int argc, char *argv[]) {
     return 1;
   }
 
-  // I used to have boost::program_options, but some users didn't want to compile boost.  
+  // I used to have boost::program_options, but some users didn't want to compile boost.
   lm::Config config;
-  boost::optional<lm::FilterMode> mode;
+  config.mode = lm::MODE_UNSET;
   for (int i = 1; i < argc - 2; ++i) {
     const char *str = argv[i];
     if (!std::strcmp(str, "copy")) {
-      mode = lm::MODE_COPY;
+      config.mode = lm::MODE_COPY;
     } else if (!std::strcmp(str, "single")) {
-      mode = lm::MODE_SINGLE;
+      config.mode = lm::MODE_SINGLE;
     } else if (!std::strcmp(str, "multiple")) {
-      mode = lm::MODE_MULTIPLE;
+      config.mode = lm::MODE_MULTIPLE;
     } else if (!std::strcmp(str, "union")) {
-      mode = lm::MODE_UNION;
+      config.mode = lm::MODE_UNION;
     } else if (!std::strcmp(str, "phrase")) {
       config.phrase = true;
     } else if (!std::strcmp(str, "context")) {
@@ -203,13 +203,12 @@ int main(int argc, char *argv[]) {
     }
   }
   
-  if (!mode) {
+  if (config.mode == lm::MODE_UNSET) {
     lm::DisplayHelp(argv[0]);
     return 1;
   }
-  config.mode = *mode;
 
-  if (config.phrase && config.mode != lm::MODE_UNION && mode != lm::MODE_MULTIPLE) {
+  if (config.phrase && config.mode != lm::MODE_UNION && config.mode != lm::MODE_MULTIPLE) {
     std::cerr << "Phrase constraint currently only works in multiple or union mode.  If you really need it for single, put everything on one line and use union." << std::endl;
     return 1;
   }
diff --git a/klm/lm/filter/phrase.hh b/klm/lm/filter/phrase.hh
index 07479dea..b4edff41 100644
--- a/klm/lm/filter/phrase.hh
+++ b/klm/lm/filter/phrase.hh
@@ -57,6 +57,7 @@ class Substrings {
     LM_FILTER_PHRASE_METHOD(Right, right)
     LM_FILTER_PHRASE_METHOD(Phrase, phrase)
 
+#pragma GCC diagnostic ignored "-Wuninitialized" // end != finish so there's always an initialization
     // sentence_id must be non-decreasing.  Iterators are over words in the phrase.  
     template <class Iterator> void AddPhrase(unsigned int sentence_id, const Iterator &begin, const Iterator &end) {
       // Iterate over all substrings.  
diff --git a/klm/lm/filter/vocab.hh b/klm/lm/filter/vocab.hh
index e2b6adff..7f0fadaa 100644
--- a/klm/lm/filter/vocab.hh
+++ b/klm/lm/filter/vocab.hh
@@ -5,6 +5,7 @@
 
 #include "util/multi_intersection.hh"
 #include "util/string_piece.hh"
+#include "util/string_piece_hash.hh"
 #include "util/tokenize_piece.hh"
 
 #include <boost/noncopyable.hpp>
diff --git a/klm/lm/fragment.cc b/klm/lm/fragment_main.cc
index 0267cd4e..0267cd4e 100644
--- a/klm/lm/fragment.cc
+++ b/klm/lm/fragment_main.cc
diff --git a/klm/lm/max_order.cc b/klm/lm/kenlm_max_order_main.cc
index 94221201..94221201 100644
--- a/klm/lm/max_order.cc
+++ b/klm/lm/kenlm_max_order_main.cc
diff --git a/klm/lm/ngram_query.cc b/klm/lm/query_main.cc
index 49757d9a..49757d9a 100644
--- a/klm/lm/ngram_query.cc
+++ b/klm/lm/query_main.cc
diff --git a/klm/util/Makefile.am b/klm/util/Makefile.am
index 248cc844..7f873e96 100644
--- a/klm/util/Makefile.am
+++ b/klm/util/Makefile.am
@@ -38,6 +38,7 @@ libklm_util_a_SOURCES = \
   sized_iterator.hh \
   sorted_uniform.hh \
   string_piece.hh \
+  string_piece_hash.hh \
   thread_pool.hh \
   tokenize_piece.hh \
   usage.hh \
diff --git a/klm/util/double-conversion/strtod.cc b/klm/util/double-conversion/strtod.cc
index 9758989f..e298766a 100644
--- a/klm/util/double-conversion/strtod.cc
+++ b/klm/util/double-conversion/strtod.cc
@@ -506,7 +506,9 @@ float Strtof(Vector<const char> buffer, int exponent) {
   double double_previous = Double(double_guess).PreviousDouble();
 
   float f1 = static_cast<float>(double_previous);
+#ifndef NDEBUG
   float f2 = float_guess;
+#endif
   float f3 = static_cast<float>(double_next);
   float f4;
   if (is_correct) {
@@ -515,7 +517,9 @@ float Strtof(Vector<const char> buffer, int exponent) {
     double double_next2 = Double(double_next).NextDouble();
     f4 = static_cast<float>(double_next2);
   }
+#ifndef NDEBUG
   ASSERT(f1 <= f2 && f2 <= f3 && f3 <= f4);
+#endif
 
   // If the guess doesn't lie near a single-precision boundary we can simply
   // return its float-value.
diff --git a/klm/util/file.cc b/klm/util/file.cc
index 9a6d2e64..86d9b12d 100644
--- a/klm/util/file.cc
+++ b/klm/util/file.cc
@@ -22,6 +22,7 @@
 #include <io.h>
 #include <algorithm>
 #include <limits.h>
+#include <limits>
 #else
 #include <unistd.h>
 #endif
@@ -99,15 +100,15 @@ uint64_t SizeOrThrow(int fd) {
 }
 
 void ResizeOrThrow(int fd, uint64_t to) {
-  UTIL_THROW_IF_ARG(
 #if defined(_WIN32) || defined(_WIN64)
-    _chsize_s
+    errno_t ret = _chsize_s
 #elif defined(OS_ANDROID)
-    ftruncate64
+    int ret = ftruncate64
 #else
-    ftruncate
+    int ret = ftruncate
 #endif
-    (fd, to), FDException, (fd), "while resizing to " << to << " bytes");
+    (fd, to);
+  UTIL_THROW_IF_ARG(ret, FDException, (fd), "while resizing to " << to << " bytes");
 }
 
 std::size_t PartialRead(int fd, void *to, std::size_t amount) {
@@ -150,9 +151,21 @@ std::size_t ReadOrEOF(int fd, void *to_void, std::size_t amount) {
 void PReadOrThrow(int fd, void *to_void, std::size_t size, uint64_t off) {
   uint8_t *to = static_cast<uint8_t*>(to_void);
 #if defined(_WIN32) || defined(_WIN64)
-  UTIL_THROW(Exception, "TODO: PReadOrThrow for windows using ReadFile http://stackoverflow.com/questions/766477/are-there-equivalents-to-pread-on-different-platforms");
-#else
+  UTIL_THROW(Exception, "This pread implementation for windows is broken.  Please send me a patch that does not change the file pointer.  Atomically.  Or send me an implementation of pwrite that is allowed to change the file pointer but can be called concurrently with pread.");
+  const std::size_t kMaxDWORD = static_cast<std::size_t>(4294967295UL);
+#endif
   for (;size ;) {
+#if defined(_WIN32) || defined(_WIN64)
+    /* BROKEN: changes file pointer.  Even if you save it and change it back, it won't be safe to use concurrently with write() or read() which lmplz does. */
+    // size_t might be 64-bit.  DWORD is always 32.
+    DWORD reading = static_cast<DWORD>(std::min<std::size_t>(kMaxDWORD, size));
+    DWORD ret;
+    OVERLAPPED overlapped;
+    memset(&overlapped, 0, sizeof(OVERLAPPED));
+    overlapped.Offset = static_cast<DWORD>(off);
+    overlapped.OffsetHigh = static_cast<DWORD>(off >> 32);
+    UTIL_THROW_IF(!ReadFile((HANDLE)_get_osfhandle(fd), to, reading, &ret, &overlapped), Exception, "ReadFile failed for offset " << off);
+#else
     ssize_t ret;
     errno = 0;
     do {
@@ -166,11 +179,11 @@ void PReadOrThrow(int fd, void *to_void, std::size_t size, uint64_t off) {
       UTIL_THROW_IF(ret == 0, EndOfFileException, " for reading " << size << " bytes at " << off << " from " << NameFromFD(fd));
       UTIL_THROW_ARG(FDException, (fd), "while reading " << size << " bytes at offset " << off);
     }
+#endif
     size -= ret;
     off += ret;
     to += ret;
   }
-#endif
 }
 
 void WriteOrThrow(int fd, const void *data_void, std::size_t size) {
@@ -218,15 +231,15 @@ typedef CheckOffT<sizeof(off_t)>::True IgnoredType;
 
 // Can't we all just get along?  
 void InternalSeek(int fd, int64_t off, int whence) {
-  UTIL_THROW_IF_ARG(
+  if (
 #if defined(_WIN32) || defined(_WIN64)
-    (__int64)-1 == _lseeki64(fd, off, whence),
+    (__int64)-1 == _lseeki64(fd, off, whence)
 #elif defined(OS_ANDROID)
-    (off64_t)-1 == lseek64(fd, off, whence),
+    (off64_t)-1 == lseek64(fd, off, whence)
 #else
-    (off_t)-1 == lseek(fd, off, whence),
+    (off_t)-1 == lseek(fd, off, whence)
 #endif
-    FDException, (fd), "while seeking to " << off << " whence " << whence);
+  ) UTIL_THROW_ARG(FDException, (fd), "while seeking to " << off << " whence " << whence);
 }
 } // namespace
 
@@ -386,7 +399,13 @@ void NormalizeTempPrefix(std::string &base) {
   struct stat sb;
   // It's fine for it to not exist.
   if (-1 == stat(base.c_str(), &sb)) return;
-  if (S_ISDIR(sb.st_mode)) base += '/';
+  if (
+#if defined(_WIN32) || defined(_WIN64)
+    sb.st_mode & _S_IFDIR
+#else
+    S_ISDIR(sb.st_mode)
+#endif
+    ) base += '/';
 }
 
 int MakeTemp(const std::string &base) {
diff --git a/klm/util/file_piece.cc b/klm/util/file_piece.cc
index fbfa0e0e..9de30fc4 100644
--- a/klm/util/file_piece.cc
+++ b/klm/util/file_piece.cc
@@ -49,6 +49,18 @@ FilePiece::FilePiece(int fd, const char *name, std::ostream *show_progress, std:
   Initialize(NamePossiblyFind(fd, name).c_str(), show_progress, min_buffer);
 }
 
+FilePiece::FilePiece(std::istream &stream, const char *name, std::size_t min_buffer) :
+  total_size_(kBadSize), page_(SizePage()) {
+  InitializeNoRead(name ? name : "istream", min_buffer);
+
+  fallback_to_read_ = true;
+  data_.reset(MallocOrThrow(default_map_size_), default_map_size_, scoped_memory::MALLOC_ALLOCATED);
+  position_ = data_.begin();
+  position_end_ = position_;
+  
+  fell_back_.Reset(stream);
+}
+
 FilePiece::~FilePiece() {}
 
 StringPiece FilePiece::ReadLine(char delim) {
@@ -83,7 +95,34 @@ unsigned long int FilePiece::ReadULong() {
   return ReadNumber<unsigned long int>();
 }
 
-void FilePiece::Initialize(const char *name, std::ostream *show_progress, std::size_t min_buffer)  {
+std::size_t FilePiece::Raw(void *to, std::size_t limit) {
+  if (!limit) return 0;
+  std::size_t in_buf = static_cast<std::size_t>(position_end_ - position_);
+  if (in_buf) {
+    std::size_t amount = std::min(in_buf, limit);
+    memcpy(to, position_, amount);
+    position_ += amount;
+    return amount;
+  }
+
+  std::size_t read_return;
+  if (fallback_to_read_) {
+    read_return = fell_back_.Read(to, limit);
+    progress_.Set(fell_back_.RawAmount());
+  } else {
+    uint64_t desired_begin = mapped_offset_ + static_cast<uint64_t>(position_ - data_.begin());
+    SeekOrThrow(file_.get(), desired_begin);
+    read_return = ReadOrEOF(file_.get(), to, limit);
+    // Good thing we never rewind.  This makes desired_begin calculate the right way the next time.
+    mapped_offset_ += static_cast<uint64_t>(read_return);
+    progress_ += read_return;
+  }
+  at_end_ |= (read_return == 0);
+  return read_return;
+}
+
+// Factored out so that istream can call this.
+void FilePiece::InitializeNoRead(const char *name, std::size_t min_buffer) {
   file_name_ = name;
 
   default_map_size_ = page_ * std::max<std::size_t>((min_buffer / page_ + 1), 2);
@@ -91,6 +130,10 @@ void FilePiece::Initialize(const char *name, std::ostream *show_progress, std::s
   position_end_ = NULL;
   mapped_offset_ = 0;
   at_end_ = false;
+}
+
+void FilePiece::Initialize(const char *name, std::ostream *show_progress, std::size_t min_buffer) {
+  InitializeNoRead(name, min_buffer);
 
   if (total_size_ == kBadSize) {
     // So the assertion passes.  
@@ -239,8 +282,7 @@ void FilePiece::TransitionToRead() {
   assert(!fallback_to_read_);
   fallback_to_read_ = true;
   data_.reset();
-  data_.reset(malloc(default_map_size_), default_map_size_, scoped_memory::MALLOC_ALLOCATED);
-  UTIL_THROW_IF(!data_.get(), ErrnoException, "malloc failed for " << default_map_size_);
+  data_.reset(MallocOrThrow(default_map_size_), default_map_size_, scoped_memory::MALLOC_ALLOCATED);
   position_ = data_.begin();
   position_end_ = position_;
 
diff --git a/klm/util/file_piece.hh b/klm/util/file_piece.hh
index 53310976..1b110287 100644
--- a/klm/util/file_piece.hh
+++ b/klm/util/file_piece.hh
@@ -9,6 +9,7 @@
 #include "util/string_piece.hh"
 
 #include <cstddef>
+#include <iosfwd>
 #include <string>
 
 #include <stdint.h>
@@ -31,6 +32,13 @@ class FilePiece {
     // Takes ownership of fd.  name is used for messages.
     explicit FilePiece(int fd, const char *name = NULL, std::ostream *show_progress = NULL, std::size_t min_buffer = 1048576);
 
+    /* Read from an istream.  Don't use this if you can avoid it.  Raw fd IO is
+     * much faster.  But sometimes you just have an istream like Boost's HTTP
+     * server and want to parse it the same way.
+     * name is just used for messages and FileName().
+     */
+    explicit FilePiece(std::istream &stream, const char *name = NULL, std::size_t min_buffer = 1048576);
+
     ~FilePiece();
 
     char get() {
@@ -56,7 +64,10 @@ class FilePiece {
     long int ReadLong();
     unsigned long int ReadULong();
 
-    // Skip spaces defined by isspace.
+    // Fake read() function.  Reads up to limit bytes, returning the amount read.  Returns 0 on EOF || limit == 0. 
+    std::size_t Raw(void *to, std::size_t limit);
+
+    // Skip spaces defined by being in delim.
     void SkipSpaces(const bool *delim = kSpaces) {
       for (; ; ++position_) {
         if (position_ == position_end_) Shift();
@@ -71,6 +82,8 @@ class FilePiece {
     const std::string &FileName() const { return file_name_; }
 
   private:
+    void InitializeNoRead(const char *name, std::size_t min_buffer);
+    // Calls InitializeNoRead, so don't call both.
     void Initialize(const char *name, std::ostream *show_progress, std::size_t min_buffer);
 
     template <class T> T ReadNumber();
diff --git a/klm/util/file_piece_test.cc b/klm/util/file_piece_test.cc
index 91e4c559..7336007d 100644
--- a/klm/util/file_piece_test.cc
+++ b/klm/util/file_piece_test.cc
@@ -24,6 +24,20 @@ std::string FileLocation() {
   return ret;
 }
 
+/* istream */
+BOOST_AUTO_TEST_CASE(IStream) {
+  std::fstream ref(FileLocation().c_str(), std::ios::in);
+  std::fstream backing(FileLocation().c_str(), std::ios::in);
+  FilePiece test(backing);
+  std::string ref_line;
+  while (getline(ref, ref_line)) {
+    StringPiece test_line(test.ReadLine());
+    BOOST_CHECK_EQUAL(ref_line, test_line);
+  }
+  BOOST_CHECK_THROW(test.get(), EndOfFileException);
+  BOOST_CHECK_THROW(test.get(), EndOfFileException);
+}
+
 /* mmap implementation */
 BOOST_AUTO_TEST_CASE(MMapReadLine) {
   std::fstream ref(FileLocation().c_str(), std::ios::in);
diff --git a/klm/util/have.hh b/klm/util/have.hh
index e9a4d946..6e18529d 100644
--- a/klm/util/have.hh
+++ b/klm/util/have.hh
@@ -10,8 +10,4 @@
 //#define HAVE_ICU
 #endif
 
-#ifndef HAVE_BOOST
-//#define HAVE_BOOST
-#endif
-
 #endif // UTIL_HAVE__
diff --git a/klm/util/read_compressed.cc b/klm/util/read_compressed.cc
index 7a1a8fb5..b81549e4 100644
--- a/klm/util/read_compressed.cc
+++ b/klm/util/read_compressed.cc
@@ -320,6 +320,23 @@ class XZip : public ReadBase {
 };
 #endif // HAVE_XZLIB
 
+class IStreamReader : public ReadBase {
+  public:
+    explicit IStreamReader(std::istream &stream) : stream_(stream) {}
+
+    std::size_t Read(void *to, std::size_t amount, ReadCompressed &thunk) {
+      if (!stream_.read(static_cast<char*>(to), amount)) {
+        UTIL_THROW_IF(!stream_.eof(), ErrnoException, "istream error");
+        amount = stream_.gcount();
+      }
+      ReadCount(thunk) += amount;
+      return amount;
+    }
+
+  private:
+    std::istream &stream_;
+};
+
 enum MagicResult {
   UNKNOWN, GZIP, BZIP, XZIP
 };
@@ -329,7 +346,7 @@ MagicResult DetectMagic(const void *from_void) {
   if (header[0] == 0x1f && header[1] == 0x8b) {
     return GZIP;
   }
-  if (header[0] == 'B' && header[1] == 'Z') {
+  if (header[0] == 'B' && header[1] == 'Z' && header[2] == 'h') {
     return BZIP;
   }
   const uint8_t xzmagic[6] = { 0xFD, '7', 'z', 'X', 'Z', 0x00 };
@@ -387,6 +404,10 @@ ReadCompressed::ReadCompressed(int fd) {
   Reset(fd);
 }
 
+ReadCompressed::ReadCompressed(std::istream &in) {
+  Reset(in);
+}
+
 ReadCompressed::ReadCompressed() {}
 
 ReadCompressed::~ReadCompressed() {}
@@ -396,6 +417,11 @@ void ReadCompressed::Reset(int fd) {
   internal_.reset(ReadFactory(fd, raw_amount_));
 }
 
+void ReadCompressed::Reset(std::istream &in) {
+  internal_.reset();
+  internal_.reset(new IStreamReader(in));
+}
+
 std::size_t ReadCompressed::Read(void *to, std::size_t amount) {
   return internal_->Read(to, amount, *this);
 }
diff --git a/klm/util/read_compressed.hh b/klm/util/read_compressed.hh
index 83ca9fb2..8b54c9e8 100644
--- a/klm/util/read_compressed.hh
+++ b/klm/util/read_compressed.hh
@@ -45,6 +45,10 @@ class ReadCompressed {
     // Takes ownership of fd.   
     explicit ReadCompressed(int fd);
 
+    // Try to avoid using this.  Use the fd instead.
+    // There is no decompression support for istreams.
+    explicit ReadCompressed(std::istream &in);
+
     // Must call Reset later.
     ReadCompressed();
 
@@ -53,6 +57,9 @@ class ReadCompressed {
     // Takes ownership of fd.  
     void Reset(int fd);
 
+    // Same advice as the constructor.
+    void Reset(std::istream &in);
+
     std::size_t Read(void *to, std::size_t amount);
 
     uint64_t RawAmount() const { return raw_amount_; }
diff --git a/klm/util/read_compressed_test.cc b/klm/util/read_compressed_test.cc
index 6fd97e5e..9cb4a4b9 100644
--- a/klm/util/read_compressed_test.cc
+++ b/klm/util/read_compressed_test.cc
@@ -25,19 +25,34 @@ void ReadLoop(ReadCompressed &reader, void *to_void, std::size_t amount) {
   }
 }
 
-void TestRandom(const char *compressor) {
-  const uint32_t kSize4 = 100000 / 4;
+const uint32_t kSize4 = 100000 / 4;
+
+std::string WriteRandom() {
   char name[] = "tempXXXXXX";
+  scoped_fd original(mkstemp(name));
+  BOOST_REQUIRE(original.get() > 0);
+  for (uint32_t i = 0; i < kSize4; ++i) {
+    WriteOrThrow(original.get(), &i, sizeof(uint32_t));
+  }
+  return name;
+}
 
-  // Write test file.  
-  {
-    scoped_fd original(mkstemp(name));
-    BOOST_REQUIRE(original.get() > 0);
-    for (uint32_t i = 0; i < kSize4; ++i) {
-      WriteOrThrow(original.get(), &i, sizeof(uint32_t));
-    }
+void VerifyRead(ReadCompressed &reader) {
+  for (uint32_t i = 0; i < kSize4; ++i) {
+    uint32_t got;
+    ReadLoop(reader, &got, sizeof(uint32_t));
+    BOOST_CHECK_EQUAL(i, got);
   }
 
+  char ignored;
+  BOOST_CHECK_EQUAL((std::size_t)0, reader.Read(&ignored, 1));
+  // Test double EOF call.
+  BOOST_CHECK_EQUAL((std::size_t)0, reader.Read(&ignored, 1));
+}
+
+void TestRandom(const char *compressor) {
+  std::string name(WriteRandom());
+
   char gzname[] = "tempXXXXXX";
   scoped_fd gzipped(mkstemp(gzname));
 
@@ -52,20 +67,11 @@ void TestRandom(const char *compressor) {
   command += "\"";
   BOOST_REQUIRE_EQUAL(0, system(command.c_str()));
 
-  BOOST_CHECK_EQUAL(0, unlink(name));
+  BOOST_CHECK_EQUAL(0, unlink(name.c_str()));
   BOOST_CHECK_EQUAL(0, unlink(gzname));
 
   ReadCompressed reader(gzipped.release());
-  for (uint32_t i = 0; i < kSize4; ++i) {
-    uint32_t got;
-    ReadLoop(reader, &got, sizeof(uint32_t));
-    BOOST_CHECK_EQUAL(i, got);
-  }
-
-  char ignored;
-  BOOST_CHECK_EQUAL((std::size_t)0, reader.Read(&ignored, 1));
-  // Test double EOF call.
-  BOOST_CHECK_EQUAL((std::size_t)0, reader.Read(&ignored, 1));
+  VerifyRead(reader);
 }
 
 BOOST_AUTO_TEST_CASE(Uncompressed) {
@@ -90,5 +96,14 @@ BOOST_AUTO_TEST_CASE(ReadXZ) {
 }
 #endif
 
+BOOST_AUTO_TEST_CASE(IStream) {
+  std::string name(WriteRandom());
+  std::fstream stream(name.c_str(), std::ios::in);
+  BOOST_CHECK_EQUAL(0, unlink(name.c_str()));
+  ReadCompressed reader;
+  reader.Reset(stream);
+  VerifyRead(reader);
+}
+
 } // namespace
 } // namespace util
diff --git a/klm/util/stream/io.cc b/klm/util/stream/io.cc
index c7ad2980..0459f706 100644
--- a/klm/util/stream/io.cc
+++ b/klm/util/stream/io.cc
@@ -29,15 +29,17 @@ void Read::Run(const ChainPosition &position) {
 void PRead::Run(const ChainPosition &position) {
   scoped_fd owner;
   if (own_) owner.reset(file_);
-  uint64_t size = SizeOrThrow(file_);
+  const uint64_t size = SizeOrThrow(file_);
   UTIL_THROW_IF(size % static_cast<uint64_t>(position.GetChain().EntrySize()), ReadSizeException, "File size " << file_ << " size is " << size << " not a multiple of " << position.GetChain().EntrySize());
-  std::size_t block_size = position.GetChain().BlockSize();
+  const std::size_t block_size = position.GetChain().BlockSize();
+  const uint64_t block_size64 = static_cast<uint64_t>(block_size);
   Link link(position);
   uint64_t offset = 0;
-  for (; offset + block_size < size; offset += block_size, ++link) {
+  for (; offset + block_size64 < size; offset += block_size64, ++link) {
     PReadOrThrow(file_, link->Get(), block_size, offset);
     link->SetValidSize(block_size);
   }
+  // size - offset is <= block_size, so it casts to 32-bit fine.
   if (size - offset) {
     PReadOrThrow(file_, link->Get(), size - offset, offset);
     link->SetValidSize(size - offset);
diff --git a/klm/util/stream/sort.hh b/klm/util/stream/sort.hh
index a86f160f..16aa6a03 100644
--- a/klm/util/stream/sort.hh
+++ b/klm/util/stream/sort.hh
@@ -365,10 +365,14 @@ template <class Compare> class BlockSorter {
         // Record the size of each block in a separate file.    
         offsets_->Append(link->ValidSize());
         void *end = static_cast<uint8_t*>(link->Get()) + link->ValidSize();
-        std::sort(
-            SizedIt(link->Get(), entry_size),
-            SizedIt(end, entry_size),
-            compare_);
+#if defined(_WIN32) || defined(_WIN64)
+        std::stable_sort
+#else
+        std::sort
+#endif
+          (SizedIt(link->Get(), entry_size),
+           SizedIt(end, entry_size),
+           compare_);
       }
       offsets_->FinishedAppending();
     }
diff --git a/klm/util/string_piece.cc b/klm/util/string_piece.cc
index b422cefc..ec394b96 100644
--- a/klm/util/string_piece.cc
+++ b/klm/util/string_piece.cc
@@ -17,7 +17,8 @@ void StringPiece::CopyToString(std::string* target) const {
 }
 
 size_type StringPiece::find(const StringPiece& s, size_type pos) const {
-  if (length_ < 0 || pos > static_cast<size_type>(length_))
+  // Not sure why length_ < 0 was here since it's std::size_t.
+  if (/*length_ < 0 || */pos > static_cast<size_type>(length_))
     return npos;
 
   const char* result = std::search(ptr_ + pos, ptr_ + length_,
diff --git a/klm/util/string_piece.hh b/klm/util/string_piece.hh
index 51481646..9cf4c7f6 100644
--- a/klm/util/string_piece.hh
+++ b/klm/util/string_piece.hh
@@ -50,10 +50,6 @@
 
 #include "util/have.hh"
 
-#ifdef HAVE_BOOST
-#include <boost/functional/hash/hash.hpp>
-#endif // HAVE_BOOST
-
 #include <cstring>
 #include <iosfwd>
 #include <ostream>
@@ -256,46 +252,9 @@ inline std::ostream& operator<<(std::ostream& o, const StringPiece& piece) {
   return o.write(piece.data(), static_cast<std::streamsize>(piece.size()));
 }
 
-#ifdef HAVE_BOOST
-inline size_t hash_value(const StringPiece &str) {
-  return boost::hash_range(str.data(), str.data() + str.length());
-}
-
-/* Support for lookup of StringPiece in boost::unordered_map<std::string> */
-struct StringPieceCompatibleHash : public std::unary_function<const StringPiece &, size_t> {
-  size_t operator()(const StringPiece &str) const {
-    return hash_value(str);
-  }
-};
-
-struct StringPieceCompatibleEquals : public std::binary_function<const StringPiece &, const std::string &, bool> {
-  bool operator()(const StringPiece &first, const StringPiece &second) const {
-    return first == second;
-  }
-};
-template <class T> typename T::const_iterator FindStringPiece(const T &t, const StringPiece &key) {
-#if BOOST_VERSION < 104200
-  std::string temp(key.data(), key.size());
-  return t.find(temp);
-#else
-  return t.find(key, StringPieceCompatibleHash(), StringPieceCompatibleEquals());
-#endif
-}
-
-template <class T> typename T::iterator FindStringPiece(T &t, const StringPiece &key) {
-#if BOOST_VERSION < 104200
-  std::string temp(key.data(), key.size());
-  return t.find(temp);
-#else
-  return t.find(key, StringPieceCompatibleHash(), StringPieceCompatibleEquals());
-#endif
-}
-#endif
-
 #ifdef HAVE_ICU
 U_NAMESPACE_END
 using U_NAMESPACE_QUALIFIER StringPiece;
 #endif
 
-
 #endif  // BASE_STRING_PIECE_H__
diff --git a/klm/util/string_piece_hash.hh b/klm/util/string_piece_hash.hh
new file mode 100644
index 00000000..f206b1d8
--- /dev/null
+++ b/klm/util/string_piece_hash.hh
@@ -0,0 +1,43 @@
+#ifndef UTIL_STRING_PIECE_HASH__
+#define UTIL_STRING_PIECE_HASH__
+
+#include "util/string_piece.hh"
+
+#include <boost/functional/hash.hpp>
+#include <boost/version.hpp>
+
+inline size_t hash_value(const StringPiece &str) {
+  return boost::hash_range(str.data(), str.data() + str.length());
+}
+
+/* Support for lookup of StringPiece in boost::unordered_map<std::string> */
+struct StringPieceCompatibleHash : public std::unary_function<const StringPiece &, size_t> {
+  size_t operator()(const StringPiece &str) const {
+    return hash_value(str);
+  }
+};
+
+struct StringPieceCompatibleEquals : public std::binary_function<const StringPiece &, const std::string &, bool> {
+  bool operator()(const StringPiece &first, const StringPiece &second) const {
+    return first == second;
+  }
+};
+template <class T> typename T::const_iterator FindStringPiece(const T &t, const StringPiece &key) {
+#if BOOST_VERSION < 104200
+  std::string temp(key.data(), key.size());
+  return t.find(temp);
+#else
+  return t.find(key, StringPieceCompatibleHash(), StringPieceCompatibleEquals());
+#endif
+}
+
+template <class T> typename T::iterator FindStringPiece(T &t, const StringPiece &key) {
+#if BOOST_VERSION < 104200
+  std::string temp(key.data(), key.size());
+  return t.find(temp);
+#else
+  return t.find(key, StringPieceCompatibleHash(), StringPieceCompatibleEquals());
+#endif
+}
+
+#endif // UTIL_STRING_PIECE_HASH__
diff --git a/klm/util/usage.cc b/klm/util/usage.cc
index 16a004bb..b8e125d0 100644
--- a/klm/util/usage.cc
+++ b/klm/util/usage.cc
@@ -81,7 +81,7 @@ template <class Num> uint64_t ParseNum(const std::string &arg) {
   UTIL_THROW_IF_ARG(stream >> throwaway, SizeParseError, (arg), "because there was more cruft " << throwaway << " after the number.");
 
   // Silly sort, using kilobytes as your default unit.  
-  if (after.empty()) after == "K";
+  if (after.empty()) after = "K";
   if (after == "%") {
     uint64_t mem = GuessPhysicalMemory();
     UTIL_THROW_IF_ARG(!mem, SizeParseError, (arg), "because % was specified but the physical memory size could not be determined.");
diff --git a/mteval/Makefile.am b/mteval/Makefile.am
index 83adee17..681e798e 100644
--- a/mteval/Makefile.am
+++ b/mteval/Makefile.am
@@ -19,6 +19,7 @@ libmteval_a_SOURCES = \
   ns_comb.h \
   ns_docscorer.h \
   ns_ext.h \
+  ns_ssk.h \
   ns_ter.h \
   scorer.h \
   ter.h \
@@ -31,6 +32,7 @@ libmteval_a_SOURCES = \
   ns_comb.cc \
   ns_docscorer.cc \
   ns_ext.cc \
+  ns_ssk.cc \
   ns_ter.cc \
   scorer.cc \
   ter.cc
diff --git a/mteval/ns.cc b/mteval/ns.cc
index 7d73061c..d8214558 100644
--- a/mteval/ns.cc
+++ b/mteval/ns.cc
@@ -3,6 +3,7 @@
 #include "ns_ext.h"
 #include "ns_comb.h"
 #include "ns_cer.h"
+#include "ns_ssk.h"
 
 #include <cstdio>
 #include <cassert>
@@ -252,6 +253,8 @@ EvaluationMetric* EvaluationMetric::Instance(const string& imetric_id) {
       m = new BleuMetric<4, NIST>;
     } else if (metric_id == "KOEHN_BLEU") {
       m = new BleuMetric<4, Koehn>;
+    } else if (metric_id == "SSK") {
+      m = new SSKMetric;
     } else if (metric_id == "TER") {
       m = new TERMetric;
     } else if (metric_id == "METEOR") {
diff --git a/mteval/ns_ssk.cc b/mteval/ns_ssk.cc
new file mode 100644
index 00000000..c94e62ca
--- /dev/null
+++ b/mteval/ns_ssk.cc
@@ -0,0 +1,32 @@
+#include "ns_ssk.h"
+
+#include <vector>
+
+#include "kernel_string_subseq.h"
+#include "tdict.h"
+
+static const unsigned kNUMFIELDS = 2;
+static const unsigned kSIMILARITY = 0;
+static const unsigned kCOUNT = 1;
+
+unsigned SSKMetric::SufficientStatisticsVectorSize() const {
+  return kNUMFIELDS;
+}
+
+void SSKMetric::ComputeSufficientStatistics(const std::vector<WordID>& hyp,
+                                            const std::vector<std::vector<WordID> >& refs,
+                                            SufficientStats* out) const {
+  out->fields.resize(kNUMFIELDS);
+  out->fields[kCOUNT] = 1;
+  float bestsim = 0;
+  for (unsigned i = 0; i < refs.size(); ++i) {
+    float s = ssk<4>(hyp, refs[i], 0.8);
+    if (s > bestsim) bestsim = s;
+  }
+  out->fields[kSIMILARITY] = bestsim;
+}
+
+float SSKMetric::ComputeScore(const SufficientStats& stats) const {
+  return stats.fields[kSIMILARITY] / stats.fields[kCOUNT];
+}
+
diff --git a/mteval/ns_ssk.h b/mteval/ns_ssk.h
new file mode 100644
index 00000000..0d418770
--- /dev/null
+++ b/mteval/ns_ssk.h
@@ -0,0 +1,22 @@
+#ifndef _NS_SSK_H_
+#define _NS_SSK_H_
+
+#include "ns.h"
+
+class SSKMetric : public EvaluationMetric {
+  friend class EvaluationMetric;
+ private:
+  unsigned EditDistance(const std::string& hyp,
+                        const std::string& ref) const;
+ protected:
+  SSKMetric() : EvaluationMetric("SSK") {}
+
+ public:
+  virtual unsigned SufficientStatisticsVectorSize() const;
+  virtual void ComputeSufficientStatistics(const std::vector<WordID>& hyp,
+                                           const std::vector<std::vector<WordID> >& refs,
+                                           SufficientStats* out) const;
+  virtual float ComputeScore(const SufficientStats& stats) const;
+};
+
+#endif
diff --git a/python/pkg/cdec/sa/__init__.py b/python/pkg/cdec/sa/__init__.py
index 418531d9..14ba5ecb 100644
--- a/python/pkg/cdec/sa/__init__.py
+++ b/python/pkg/cdec/sa/__init__.py
@@ -1,5 +1,5 @@
 from cdec.sa._sa import make_lattice, decode_lattice, decode_sentence,\
-        encode_words, decode_words,\
+        encode_words, decode_words, isvar,\
         SuffixArray, DataArray, LCP, Precomputation, Alignment, BiLex,\
         HieroCachingRuleFactory, Sampler, Scorer
 from cdec.sa.extractor import GrammarExtractor
diff --git a/python/pkg/cdec/sa/extract.py b/python/pkg/cdec/sa/extract.py
index 9fc37345..2e596bd3 100644
--- a/python/pkg/cdec/sa/extract.py
+++ b/python/pkg/cdec/sa/extract.py
@@ -12,10 +12,10 @@ extractor, prefix = None, None
 online = False
 
 def make_extractor(config, grammars, features):
-    global extractor, prefix
+    global extractor, prefix, online
     signal.signal(signal.SIGINT, signal.SIG_IGN) # Let parent process catch Ctrl+C
     load_features(features)
-    extractor = cdec.sa.GrammarExtractor(config)
+    extractor = cdec.sa.GrammarExtractor(config, online)
     prefix = grammars
 
 def load_features(features):
@@ -53,7 +53,6 @@ def extract(inp):
     # Add training instance _after_ extracting grammars
     if online:
         extractor.add_instance(sentence, reference, alignment)
-        extractor.dump_online_stats()
     grammar_file = os.path.abspath(grammar_file)
     return '<seg grammar="{0}" id="{1}"> {2} </seg>{3}'.format(grammar_file, i, sentence, suffix)
 
diff --git a/python/pkg/cdec/sa/extractor.py b/python/pkg/cdec/sa/extractor.py
index 62a251a7..acc13cbc 100644
--- a/python/pkg/cdec/sa/extractor.py
+++ b/python/pkg/cdec/sa/extractor.py
@@ -2,14 +2,15 @@ from itertools import chain
 import os, sys
 import cdec.configobj
 from cdec.sa.features import EgivenFCoherent, SampleCountF, CountEF,\
-        MaxLexEgivenF, MaxLexFgivenE, IsSingletonF, IsSingletonFE
+        MaxLexEgivenF, MaxLexFgivenE, IsSingletonF, IsSingletonFE,\
+        IsSupportedOnline
 import cdec.sa
 
 # maximum span of a grammar rule in TEST DATA
 MAX_INITIAL_SIZE = 15
 
 class GrammarExtractor:
-    def __init__(self, config, features=None):
+    def __init__(self, config, online=False, features=None):
         if isinstance(config, basestring):
             if not os.path.exists(config):
                 raise IOError('cannot read configuration from {0}'.format(config))
@@ -57,11 +58,19 @@ class GrammarExtractor:
         # lexical weighting tables
         tt = cdec.sa.BiLex(from_binary=config['lex_file'])
 
+        # TODO: clean this up
+        extended_features = []
+        if online:
+            extended_features.append(IsSupportedOnline)
+            
         # TODO: use @cdec.sa.features decorator for standard features too
         # + add a mask to disable features
+        for f in cdec.sa._SA_FEATURES:
+            extended_features.append(f)
+            
         scorer = cdec.sa.Scorer(EgivenFCoherent, SampleCountF, CountEF, 
             MaxLexFgivenE(tt), MaxLexEgivenF(tt), IsSingletonF, IsSingletonFE,
-            *cdec.sa._SA_FEATURES)
+            *extended_features)
 
         fsarray = cdec.sa.SuffixArray(from_binary=config['f_sa_file'])
         edarray = cdec.sa.DataArray(from_binary=config['e_file'])
@@ -92,4 +101,6 @@ class GrammarExtractor:
     
     # Debugging
     def dump_online_stats(self):
-        self.factory.dump_online_stats()
\ No newline at end of file
+        self.factory.dump_online_stats()
+    def dump_online_rules(self):
+        self.factory.dump_online_rules()
\ No newline at end of file
diff --git a/python/pkg/cdec/sa/features.py b/python/pkg/cdec/sa/features.py
index a4ae23e8..46412cd5 100644
--- a/python/pkg/cdec/sa/features.py
+++ b/python/pkg/cdec/sa/features.py
@@ -1,57 +1,142 @@
 from __future__ import division
 import math
 
+from cdec.sa import isvar
+
 MAXSCORE = 99
 
 def EgivenF(ctx): # p(e|f) = c(e, f)/c(f)
-    return -math.log10(ctx.paircount/ctx.fcount)
+    if not ctx.online:
+        prob = ctx.paircount/ctx.fcount
+    else:
+        prob = (ctx.paircount + ctx.online.paircount) / (ctx.fcount + ctx.online.fcount)
+    return -math.log10(prob)
 
 def CountEF(ctx): # c(e, f)
-    return math.log10(1 + ctx.paircount)
+    if not ctx.online:
+        count = 1 + ctx.paircount
+    else:
+        count = 1 + ctx.paircount + ctx.online.paircount
+    return math.log10(count)
 
 def SampleCountF(ctx): # sample c(f)
-    return math.log10(1 + ctx.fsample_count)
+    if not ctx.online:
+        count = 1 + ctx.fsample_count
+    else:
+        count = 1 + ctx.fsample_count + ctx.online.fsample_count
+    return math.log10(count)
 
 def EgivenFCoherent(ctx): # c(e, f) / sample c(f)
-    prob = ctx.paircount/ctx.fsample_count
+    if not ctx.online:
+        prob = ctx.paircount/ctx.fsample_count
+    else:
+        prob = (ctx.paircount + ctx.online.paircount) / (ctx.fsample_count + ctx.online.fsample_count)
     return -math.log10(prob) if prob > 0 else MAXSCORE
 
 def CoherenceProb(ctx): # c(f) / sample c(f)
-    return -math.log10(ctx.fcount/ctx.fsample_count)
+    if not ctx.online:
+        prob = ctx.fcount/ctx.fsample_count
+    else:
+        prob = (ctx.fcount + ctx.online.fcount) / (ctx.fsample_count + ctx.online.fsample_count)
+    return -math.log10(prob)
 
 def MaxLexEgivenF(ttable):
     def MaxLexEgivenF(ctx):
         fwords = ctx.fphrase.words
         fwords.append('NULL')
-        def score():
+        # Always use this for now
+        if not ctx.online or ctx.online:
+            maxOffScore = 0.0
+            for e in ctx.ephrase.words:
+                maxScore = max(ttable.get_score(f, e, 0) for f in fwords)
+                maxOffScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            return maxOffScore
+        else:
+            # For now, straight average
+            maxOffScore = 0.0
+            maxOnScore = 0.0
             for e in ctx.ephrase.words:
-              maxScore = max(ttable.get_score(f, e, 0) for f in fwords)
-              yield -math.log10(maxScore) if maxScore > 0 else MAXSCORE
-        return sum(score())
+                maxScore = max(ttable.get_score(f, e, 0) for f in fwords)
+                maxOffScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            for e in ctx.ephrase:
+                if not isvar(e):
+                    maxScore = 0.0
+                    for f in ctx.fphrase:
+                        if not isvar(f):
+                            b_f = ctx.online.bilex_f.get(f, 0)
+                            if b_f:
+                                maxScore = max(maxScore, ctx.online.bilex_fe.get(f, {}).get(e))
+                    maxOnScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            return (maxOffScore + maxOnScore) / 2
     return MaxLexEgivenF
 
 def MaxLexFgivenE(ttable):
     def MaxLexFgivenE(ctx):
         ewords = ctx.ephrase.words
         ewords.append('NULL')
-        def score():
+        # Always use this for now
+        if not ctx.online or ctx.online:
+            maxOffScore = 0.0
             for f in ctx.fphrase.words:
-              maxScore = max(ttable.get_score(f, e, 1) for e in ewords)
-              yield -math.log10(maxScore) if maxScore > 0 else MAXSCORE
-        return sum(score())
+                maxScore = max(ttable.get_score(f, e, 1) for e in ewords)
+                maxOffScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            return maxOffScore
+        else:
+            # For now, straight average
+            maxOffScore = 0.0
+            maxOnScore = 0.0
+            for f in ctx.fphrase.words:
+                maxScore = max(ttable.get_score(f, e, 1) for e in ewords)
+                maxOffScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            for f in ctx.fphrase:
+                if not isvar(f):
+                    maxScore = 0.0
+                    for e in ctx.ephrase:
+                        if not isvar(e):
+                            b_e = ctx.online.bilex_e.get(e, 0)
+                            if b_e:
+                                maxScore = max(maxScore, ctx.online.bilex_fe.get(f, {}).get(e, 0) / b_e )
+                    maxOnScore += -math.log10(maxScore) if maxScore > 0 else MAXSCORE
+            return (maxOffScore + maxOnScore) / 2
     return MaxLexFgivenE
 
 def IsSingletonF(ctx):
-    return (ctx.fcount == 1)
+    if not ctx.online:
+        count = ctx.fcount
+    else:
+        count = ctx.fcount + ctx.online.fcount  
+    return (count == 1)
 
 def IsSingletonFE(ctx):
-    return (ctx.paircount == 1)
+    if not ctx.online:
+        count = ctx.paircount
+    else:
+        count = ctx.paircount + ctx.online.paircount
+    return (count == 1)
 
 def IsNotSingletonF(ctx):
-    return (ctx.fcount > 1)
+    if not ctx.online:
+        count = ctx.fcount
+    else:
+        count = ctx.fcount + ctx.online.fcount
+    return (count > 1)
 
 def IsNotSingletonFE(ctx):
+    if not ctx.online:
+        count = ctx.paircount
+    else:
+        count = ctx.paircount + ctx.online.paircount
     return (ctx.paircount > 1)
 
 def IsFEGreaterThanZero(ctx):
+    if not ctx.online:
+        count = ctx.paircount
+    else:
+        count = ctx.paircount + ctx.online.paircount
     return (ctx.paircount > 0.01)
+
+def IsSupportedOnline(ctx): # Occurs in online data?
+    if ctx.online:
+        return (ctx.online.paircount > 0.01)
+    else:
+        return False
\ No newline at end of file
diff --git a/python/src/sa/_sa.c b/python/src/sa/_sa.c
index 15544970..89445b45 100644
--- a/python/src/sa/_sa.c
+++ b/python/src/sa/_sa.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.17.1 on Mon Jan  7 22:31:38 2013 */
+/* Generated by Cython 0.17.1 on Mon Jan 28 14:28:01 2013 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -360,10 +360,10 @@ static const char *__pyx_f[] = {
 struct __pyx_obj_3_sa_HieroCachingRuleFactory;
 struct __pyx_obj_3_sa___pyx_scope_struct_9_decode_sentence;
 struct __pyx_obj_3_sa___pyx_scope_struct_17_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_3_compute_stats;
 struct __pyx_obj_3_sa___pyx_scope_struct_12_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr;
 struct __pyx_obj_3_sa_IntList;
 struct __pyx_obj_3_sa_VEBIterator;
 struct __pyx_obj_3_sa_BiLex;
@@ -372,8 +372,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_11_encode_words;
 struct __pyx_obj_3_sa_LCP;
 struct __pyx_obj_3_sa_DataArray;
 struct __pyx_obj_3_sa_BitSetIterator;
+struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr;
 struct __pyx_obj_3_sa_Precomputation;
-struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance;
 struct __pyx_obj_3_sa___pyx_scope_struct_18_alignments;
 struct __pyx_obj_3_sa___pyx_scope_struct_14_genexpr;
 struct __pyx_obj_3_sa_SuffixArray;
@@ -381,11 +381,14 @@ struct __pyx_obj_3_sa___pyx_scope_struct_16___str__;
 struct __pyx_obj_3_sa_Alphabet;
 struct __pyx_obj_3_sa_Rule;
 struct __pyx_obj_3_sa___pyx_scope_struct_6_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance;
 struct __pyx_obj_3_sa___pyx_scope_struct_2_genexpr;
 struct __pyx_obj_3_sa_PhraseLocation;
 struct __pyx_obj_3_sa___pyx_scope_struct_15___iter__;
-struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule;
-struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr;
+struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule;
+struct __pyx_obj_3_sa___pyx_scope_struct_28___str__;
 struct __pyx_obj_3_sa___pyx_scope_struct_1_read_bitext;
 struct __pyx_obj_3_sa___pyx_scope_struct_13_decode_words;
 struct __pyx_obj_3_sa_FeatureVector;
@@ -396,19 +399,18 @@ struct __pyx_obj_3_sa_Alignment;
 struct __pyx_obj_3_sa_BitSet;
 struct __pyx_obj_3_sa_Sampler;
 struct __pyx_obj_3_sa_StringMap;
+struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases;
 struct __pyx_obj_3_sa_TrieNode;
 struct __pyx_obj_3_sa_ExtendedTrieNode;
 struct __pyx_obj_3_sa_TrieMap;
-struct __pyx_obj_3_sa___pyx_scope_struct_26___str__;
 struct __pyx_obj_3_sa___pyx_scope_struct_8_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_4_make_lattice;
-struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr;
 struct __pyx_obj_3_sa_Phrase;
+struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__;
 struct __pyx_obj_3_sa___pyx_scope_struct____iter__;
 struct __pyx_obj_3_sa_TrieTable;
 struct __pyx_obj_3_sa___pyx_scope_struct_5_genexpr;
 struct __pyx_obj_3_sa___pyx_scope_struct_10_genexpr;
-struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__;
 struct __pyx_obj_3_sa_FloatList;
 struct __pyx_t_3_sa__node;
 struct __pyx_t_3_sa__BitSet;
@@ -490,7 +492,7 @@ struct __pyx_t_3_sa__Trie_Node {
   int arr_len;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":66
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":76
  * 
  * # linked list structure for storing matches in BaselineRuleFactory
  * cdef struct match_node:             # <<<<<<<<<<<<<<
@@ -502,7 +504,7 @@ struct __pyx_t_3_sa_match_node {
   struct __pyx_t_3_sa_match_node *next;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":162
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":172
  * 
  * # struct used to encapsulate a single matching
  * cdef struct Matching:             # <<<<<<<<<<<<<<
@@ -517,7 +519,7 @@ struct __pyx_t_3_sa_Matching {
   int size;
 };
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":218
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":228
  * 
  * 
  * cdef class HieroCachingRuleFactory:             # <<<<<<<<<<<<<<
@@ -563,6 +565,8 @@ struct __pyx_obj_3_sa_HieroCachingRuleFactory {
   int require_aligned_chunks;
   struct __pyx_obj_3_sa_IntList *findexes;
   struct __pyx_obj_3_sa_IntList *findexes1;
+  int online;
+  PyObject *samples_f;
   PyObject *phrases_f;
   PyObject *phrases_e;
   PyObject *phrases_fe;
@@ -573,7 +577,7 @@ struct __pyx_obj_3_sa_HieroCachingRuleFactory {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
  *             for arc in node for node in lattice)
  * 
  * def decode_sentence(lattice):             # <<<<<<<<<<<<<<
@@ -603,17 +607,20 @@ struct __pyx_obj_3_sa___pyx_scope_struct_17_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1992
- * 
- *     # Create a rule from source, target, non-terminals, and alignments
- *     def form_rule(self, f_i, e_i, f_span, e_span, nt, al):             # <<<<<<<<<<<<<<
- * 
- *         # Substitute in non-terminals
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
+ *         # Online rule extraction and scoring
+ *         if self.online:
+ *             f_syms = tuple(word[0][0] for word in fwords)             # <<<<<<<<<<<<<<
+ *             for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
+ *                 spanlen = (lex_j - lex_i) + 1
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule {
+struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr {
   PyObject_HEAD
-  PyObject *__pyx_v_links;
-  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+  struct __pyx_obj_3_sa___pyx_scope_struct_19_input *__pyx_outer_scope;
+  PyObject *__pyx_v_word;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
 };
 
 
@@ -648,7 +655,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_3_compute_stats {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":119
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
  * 
  * def encode_words(words):
  *     return tuple(sym_fromstring(word, True) for word in words)             # <<<<<<<<<<<<<<
@@ -665,18 +672,17 @@ struct __pyx_obj_3_sa___pyx_scope_struct_12_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2053
- *         f = Phrase(f_sym)
- *         e = Phrase(e_sym)
- *         a = tuple(self.alignment.link(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
- *         return (f, e, a, lex_f_i, lex_f_j)
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":21
+ * 
+ *     def __str__(self):
+ *         return ' '.join('%s=%s' % feat for feat in self)             # <<<<<<<<<<<<<<
  * 
+ * cdef class Scorer:
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr {
+struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *__pyx_outer_scope;
-  PyObject *__pyx_v_i;
-  PyObject *__pyx_v_j;
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *__pyx_outer_scope;
+  PyObject *__pyx_v_feat;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
   PyObject *(*__pyx_t_2)(PyObject *);
@@ -749,7 +755,7 @@ struct __pyx_obj_3_sa_VEB {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)
  * 
  * def encode_words(words):             # <<<<<<<<<<<<<<
@@ -809,6 +815,24 @@ struct __pyx_obj_3_sa_BitSetIterator {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2110
+ *         f = Phrase(f_sym)
+ *         e = Phrase(e_sym)
+ *         a = tuple(self.alignment.link(i, j) for (i, j) in links)             # <<<<<<<<<<<<<<
+ *         return (f, e, a, lex_f_i, lex_f_j)
+ * 
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *__pyx_outer_scope;
+  PyObject *__pyx_v_i;
+  PyObject *__pyx_v_j;
+  PyObject *__pyx_t_0;
+  Py_ssize_t __pyx_t_1;
+  PyObject *(*__pyx_t_2)(PyObject *);
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/precomputation.pxi":188
  * 
  * 
@@ -830,29 +854,6 @@ struct __pyx_obj_3_sa_Precomputation {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1829
- *     # Aggregate stats from a training instance
- *     # (Extract rules, update counts)
- *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
- * 
- *         # Rules extracted from this instance
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance {
-  PyObject_HEAD
-  PyObject *__pyx_v_al;
-  PyObject *__pyx_v_cover;
-  PyObject *__pyx_v_e_nt_cover;
-  PyObject *__pyx_v_e_words;
-  PyObject *__pyx_v_ef_span;
-  PyObject *__pyx_v_extract;
-  PyObject *__pyx_v_f_len;
-  PyObject *__pyx_v_f_words;
-  PyObject *__pyx_v_fe_span;
-  PyObject *__pyx_v_rules;
-  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
-};
-
-
 /* "/home/m/workspace/cdec/python/src/sa/rule.pxi":190
  *         return ' ||| '.join(fields)
  * 
@@ -870,7 +871,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_18_alignments {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":125
  * 
  * def decode_words(syms):
  *     return tuple(sym_tostring(sym) for sym in syms)             # <<<<<<<<<<<<<<
@@ -950,7 +951,7 @@ struct __pyx_obj_3_sa_Rule {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
  * def make_lattice(words):
  *     word_ids = (sym_fromstring(word, True) for word in words)
  *     return tuple(((word, None, 1), ) for word in word_ids)             # <<<<<<<<<<<<<<
@@ -967,6 +968,29 @@ struct __pyx_obj_3_sa___pyx_scope_struct_6_genexpr {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1879
+ *     # Aggregate stats from a training instance
+ *     # (Extract rules, update counts)
+ *     def add_instance(self, f_words, e_words, alignment):             # <<<<<<<<<<<<<<
+ * 
+ *         self.online = True
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance {
+  PyObject_HEAD
+  PyObject *__pyx_v_al;
+  PyObject *__pyx_v_cover;
+  PyObject *__pyx_v_e_nt_cover;
+  PyObject *__pyx_v_e_words;
+  PyObject *__pyx_v_ef_span;
+  PyObject *__pyx_v_extract;
+  PyObject *__pyx_v_f_len;
+  PyObject *__pyx_v_f_words;
+  PyObject *__pyx_v_fe_span;
+  PyObject *__pyx_v_rules;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/data_array.pxi":74
  *     def read_bitext(self, char* filename, int side):
  *         with gzip_or_text(filename) as fp:
@@ -983,6 +1007,14 @@ struct __pyx_obj_3_sa___pyx_scope_struct_2_genexpr {
   PyObject *(*__pyx_t_2)(PyObject *);
 };
 
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":84
+ * # in the suffix array; if discontiguous, it is the set of
+ * # actual locations (packed into an array)
+ * cdef class PhraseLocation:             # <<<<<<<<<<<<<<
+ *     cdef int sa_low
+ *     cdef int sa_high
+ */
 struct __pyx_obj_3_sa_PhraseLocation {
   PyObject_HEAD
   struct __pyx_vtabstruct_3_sa_PhraseLocation *__pyx_vtab;
@@ -1010,30 +1042,30 @@ struct __pyx_obj_3_sa___pyx_scope_struct_15___iter__ {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2057
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2049
  * 
- *     # Rule string from rule
- *     def fmt_rule(self, f, e, a):             # <<<<<<<<<<<<<<
- *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)
- *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
+ *     # Create a rule from source, target, non-terminals, and alignments
+ *     def form_rule(self, f_i, e_i, f_span, e_span, nt, al):             # <<<<<<<<<<<<<<
+ * 
+ *         # Substitute in non-terminals
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule {
+struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule {
   PyObject_HEAD
-  PyObject *__pyx_v_a;
+  PyObject *__pyx_v_links;
   struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2058
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2115
  *     # Rule string from rule
  *     def fmt_rule(self, f, e, a):
  *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)             # <<<<<<<<<<<<<<
  *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
  * 
  */
-struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr {
+struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr {
   PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *__pyx_outer_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *__pyx_outer_scope;
   PyObject *__pyx_v_packed;
   PyObject *__pyx_t_0;
   Py_ssize_t __pyx_t_1;
@@ -1041,6 +1073,33 @@ struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2114
+ * 
+ *     # Rule string from rule
+ *     def fmt_rule(self, f, e, a):             # <<<<<<<<<<<<<<
+ *         a_str = ' '.join('{0}-{1}'.format(*self.alignment.unlink(packed)) for packed in a)
+ *         return '[X] ||| {0} ||| {1} ||| {2}'.format(f, e, a_str)
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule {
+  PyObject_HEAD
+  PyObject *__pyx_v_a;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":20
+ *             yield (FD.word(self.names[i]), self.values[i])
+ * 
+ *     def __str__(self):             # <<<<<<<<<<<<<<
+ *         return ' '.join('%s=%s' % feat for feat in self)
+ * 
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ {
+  PyObject_HEAD
+  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/data_array.pxi":72
  *             self.read_text_data(fp)
  * 
@@ -1055,7 +1114,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_1_read_bitext {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":124
  *     return tuple(sym_fromstring(word, True) for word in words)
  * 
  * def decode_words(syms):             # <<<<<<<<<<<<<<
@@ -1081,7 +1140,7 @@ struct __pyx_obj_3_sa_FeatureVector {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":114
  *     return tuple(((word, None, 1), ) for word in word_ids)
  * 
  * def decode_lattice(lattice):             # <<<<<<<<<<<<<<
@@ -1094,7 +1153,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_7_decode_lattice {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":954
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":972
  *         return sorted(result);
  * 
  *     def input(self, fwords, meta):             # <<<<<<<<<<<<<<
@@ -1118,12 +1177,14 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   PyObject *__pyx_v_extract_stop;
   PyObject *__pyx_v_extracts;
   PyObject *__pyx_v_f;
+  PyObject *__pyx_v_f_syms;
   PyObject *__pyx_v_fcount;
   int __pyx_v_flen;
   PyObject *__pyx_v_fphrases;
   PyObject *__pyx_v_frontier;
   PyObject *__pyx_v_frontier_nodes;
   PyObject *__pyx_v_fwords;
+  PyObject *__pyx_v_genexpr;
   struct __pyx_obj_3_sa_Phrase *__pyx_v_hiero_phrase;
   long __pyx_v_hit;
   int __pyx_v_i;
@@ -1132,6 +1193,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   int __pyx_v_j;
   int __pyx_v_k;
   PyObject *__pyx_v_key;
+  PyObject *__pyx_v_lex_i;
+  PyObject *__pyx_v_lex_j;
   PyObject *__pyx_v_loc;
   PyObject *__pyx_v_locs;
   int __pyx_v_lookup_required;
@@ -1154,6 +1217,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   PyObject *__pyx_v_sa_range;
   struct __pyx_obj_3_sa_IntList *__pyx_v_sample;
   struct __pyx_obj_3_sa_FeatureVector *__pyx_v_scores;
+  PyObject *__pyx_v_seen_phrases;
   struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
   PyObject *__pyx_v_spanlen;
   float __pyx_v_start_time;
@@ -1177,6 +1241,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_19_input {
   Py_ssize_t __pyx_t_7;
   Py_ssize_t __pyx_t_8;
   Py_ssize_t __pyx_t_9;
+  PyObject *(*__pyx_t_10)(PyObject *);
+  PyObject *(*__pyx_t_11)(PyObject *);
 };
 
 
@@ -1222,7 +1288,7 @@ struct __pyx_obj_3_sa_BitSet {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":96
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":106
  * 
  * 
  * cdef class Sampler:             # <<<<<<<<<<<<<<
@@ -1250,7 +1316,24 @@ struct __pyx_obj_3_sa_StringMap {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":36
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2161
+ *     # (Used for EGivenFCoherent)
+ *     # Return set of (fphrase, lex_i, lex_j)
+ *     def get_f_phrases(self, f_words):             # <<<<<<<<<<<<<<
+ * 
+ *         f_len = len(f_words)
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases {
+  PyObject_HEAD
+  PyObject *__pyx_v_extract;
+  PyObject *__pyx_v_f_len;
+  PyObject *__pyx_v_f_words;
+  PyObject *__pyx_v_phrases;
+  struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self;
+};
+
+
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":46
  * cdef int EPSILON = sym_fromstring('*EPS*', True)
  * 
  * cdef class TrieNode:             # <<<<<<<<<<<<<<
@@ -1263,7 +1346,7 @@ struct __pyx_obj_3_sa_TrieNode {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":42
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":52
  *         self.children = {}
  * 
  * cdef class ExtendedTrieNode(TrieNode):             # <<<<<<<<<<<<<<
@@ -1293,20 +1376,7 @@ struct __pyx_obj_3_sa_TrieMap {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":20
- *             yield (FD.word(self.names[i]), self.values[i])
- * 
- *     def __str__(self):             # <<<<<<<<<<<<<<
- *         return ' '.join('%s=%s' % feat for feat in self)
- * 
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ {
-  PyObject_HEAD
-  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
-};
-
-
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  * 
  * def decode_lattice(lattice):
  *     return tuple((sym_tostring(sym), weight, dist) for (sym, weight, dist) in arc             # <<<<<<<<<<<<<<
@@ -1333,8 +1403,8 @@ struct __pyx_obj_3_sa___pyx_scope_struct_8_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
- *     return ALPHABET.fromstring(string, terminal)
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
+ *     return sym_isvar(sym)
  * 
  * def make_lattice(words):             # <<<<<<<<<<<<<<
  *     word_ids = (sym_fromstring(word, True) for word in words)
@@ -1347,23 +1417,6 @@ struct __pyx_obj_3_sa___pyx_scope_struct_4_make_lattice {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":21
- * 
- *     def __str__(self):
- *         return ' '.join('%s=%s' % feat for feat in self)             # <<<<<<<<<<<<<<
- * 
- * cdef class Scorer:
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr {
-  PyObject_HEAD
-  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *__pyx_outer_scope;
-  PyObject *__pyx_v_feat;
-  PyObject *__pyx_t_0;
-  Py_ssize_t __pyx_t_1;
-  PyObject *(*__pyx_t_2)(PyObject *);
-};
-
-
 /* "_sa.pxd":29
  *     cdef FloatList values
  * 
@@ -1381,6 +1434,22 @@ struct __pyx_obj_3_sa_Phrase {
 };
 
 
+/* "/home/m/workspace/cdec/python/src/sa/features.pxi":15
+ *         self.values.append(value)
+ * 
+ *     def __iter__(self):             # <<<<<<<<<<<<<<
+ *         cdef unsigned i
+ *         for i in range(self.names.len):
+ */
+struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ {
+  PyObject_HEAD
+  unsigned int __pyx_v_i;
+  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
+  int __pyx_t_0;
+  unsigned int __pyx_t_1;
+};
+
+
 /* "/home/m/workspace/cdec/python/src/sa/int_list.pxi":81
  *         free(self.arr)
  * 
@@ -1397,7 +1466,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct____iter__ {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":53
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":63
  * 
  * 
  * cdef class TrieTable:             # <<<<<<<<<<<<<<
@@ -1412,7 +1481,7 @@ struct __pyx_obj_3_sa_TrieTable {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
  * 
  * def make_lattice(words):
  *     word_ids = (sym_fromstring(word, True) for word in words)             # <<<<<<<<<<<<<<
@@ -1429,7 +1498,7 @@ struct __pyx_obj_3_sa___pyx_scope_struct_5_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":119
  * 
  * def decode_sentence(lattice):
  *     return tuple(sym_tostring(sym) for ((sym, _, _),) in lattice)             # <<<<<<<<<<<<<<
@@ -1447,22 +1516,6 @@ struct __pyx_obj_3_sa___pyx_scope_struct_10_genexpr {
 };
 
 
-/* "/home/m/workspace/cdec/python/src/sa/features.pxi":15
- *         self.values.append(value)
- * 
- *     def __iter__(self):             # <<<<<<<<<<<<<<
- *         cdef unsigned i
- *         for i in range(self.names.len):
- */
-struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ {
-  PyObject_HEAD
-  unsigned int __pyx_v_i;
-  struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self;
-  int __pyx_t_0;
-  unsigned int __pyx_t_1;
-};
-
-
 /* "_sa.pxd":3
  * from libc.stdio cimport FILE
  * 
@@ -1596,7 +1649,7 @@ struct __pyx_vtabstruct_3_sa_Phrase {
 static struct __pyx_vtabstruct_3_sa_Phrase *__pyx_vtabptr_3_sa_Phrase;
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":74
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":84
  * # in the suffix array; if discontiguous, it is the set of
  * # actual locations (packed into an array)
  * cdef class PhraseLocation:             # <<<<<<<<<<<<<<
@@ -1694,7 +1747,7 @@ struct __pyx_vtabstruct_3_sa_Alphabet {
 static struct __pyx_vtabstruct_3_sa_Alphabet *__pyx_vtabptr_3_sa_Alphabet;
 
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":218
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":228
  * 
  * 
  * cdef class HieroCachingRuleFactory:             # <<<<<<<<<<<<<<
@@ -2370,14 +2423,16 @@ static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_16___str__ = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_17_genexpr = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_18_alignments = 0;
 static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_19_input = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_20_add_instance = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21_form_rule = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_22_genexpr = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_23_fmt_rule = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_24_genexpr = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_25___iter__ = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_26___str__ = 0;
-static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_27_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_20_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_21_add_instance = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_22_form_rule = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_23_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_24_fmt_rule = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_25_genexpr = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_26_get_f_phrases = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_27___iter__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_28___str__ = 0;
+static PyTypeObject *__pyx_ptype_3_sa___pyx_scope_struct_29_genexpr = 0;
 static int __pyx_v_3_sa_MIN_BOTTOM_SIZE;
 static int __pyx_v_3_sa_MIN_BOTTOM_BITS;
 static int __pyx_v_3_sa_LOWER_MASK[32];
@@ -2541,17 +2596,18 @@ static int __pyx_pf_3_sa_8Alphabet___cinit__(struct __pyx_obj_3_sa_Alphabet *__p
 static void __pyx_pf_3_sa_8Alphabet_2__dealloc__(CYTHON_UNUSED struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_8Alphabet_9terminals___get__(struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_8Alphabet_12nonterminals___get__(struct __pyx_obj_3_sa_Alphabet *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3_sa_2isvar(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_sym); /* proto */
 static PyObject *__pyx_pf_3_sa_12make_lattice_genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_3_sa_12make_lattice_3genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_2make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
+static PyObject *__pyx_pf_3_sa_4make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
 static PyObject *__pyx_pf_3_sa_14decode_lattice_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_4decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
+static PyObject *__pyx_pf_3_sa_6decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
 static PyObject *__pyx_pf_3_sa_15decode_sentence_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_6decode_sentence(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
+static PyObject *__pyx_pf_3_sa_8decode_sentence(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice); /* proto */
 static PyObject *__pyx_pf_3_sa_12encode_words_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_8encode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
+static PyObject *__pyx_pf_3_sa_10encode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words); /* proto */
 static PyObject *__pyx_pf_3_sa_12decode_words_genexpr(PyObject *__pyx_self); /* proto */
-static PyObject *__pyx_pf_3_sa_10decode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_syms); /* proto */
+static PyObject *__pyx_pf_3_sa_12decode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_syms); /* proto */
 static int __pyx_pf_3_sa_6Phrase___cinit__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self, PyObject *__pyx_v_words); /* proto */
 static void __pyx_pf_3_sa_6Phrase_2__dealloc__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_6Phrase_4__str__(struct __pyx_obj_3_sa_Phrase *__pyx_v_self); /* proto */
@@ -2643,6 +2699,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_20get_next_states(struc
 static PyObject *__pyx_lambda_funcdef_lambda5(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda4(CYTHON_UNUSED PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_lambda_funcdef_lambda6(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_x); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_5input_2genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_22input(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_fwords, PyObject *__pyx_v_meta); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(PyObject *__pyx_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_f_j, PyObject *__pyx_v_e_i, PyObject *__pyx_v_e_j, PyObject *__pyx_v_min_bound, PyObject *__pyx_v_wc, PyObject *__pyx_v_links, PyObject *__pyx_v_nt, PyObject *__pyx_v_nt_open); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_25add_instance(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words, PyObject *__pyx_v_e_words, PyObject *__pyx_v_alignment); /* proto */
@@ -2653,9 +2710,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_27form_rule(struct __py
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8fmt_rule_genexpr(PyObject *__pyx_self); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_29fmt_rule(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f, PyObject *__pyx_v_e, PyObject *__pyx_v_a); /* proto */
 static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_31dump_online_stats(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self); /* proto */
-static PyObject *__pyx_pf_3_sa_12span_check(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
-static PyObject *__pyx_pf_3_sa_14span_inc(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
-static PyObject *__pyx_pf_3_sa_16span_dec(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_33dump_online_rules(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_35online_ctx_lookup(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f, PyObject *__pyx_v_e); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_13get_f_phrases_extract(PyObject *__pyx_self, PyObject *__pyx_v_f_i, PyObject *__pyx_v_f_j, PyObject *__pyx_v_lex_i, PyObject *__pyx_v_lex_j, PyObject *__pyx_v_wc, PyObject *__pyx_v_ntc, PyObject *__pyx_v_syms); /* proto */
+static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_37get_f_phrases(struct __pyx_obj_3_sa_HieroCachingRuleFactory *__pyx_v_self, PyObject *__pyx_v_f_words); /* proto */
+static PyObject *__pyx_pf_3_sa_14span_check(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_16span_inc(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
+static PyObject *__pyx_pf_3_sa_18span_dec(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_vec, PyObject *__pyx_v_i, PyObject *__pyx_v_j); /* proto */
 static int __pyx_pf_3_sa_13FeatureVector___cinit__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_3_sa_13FeatureVector_2set(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self, unsigned int __pyx_v_name, float __pyx_v_value); /* proto */
 static PyObject *__pyx_pf_3_sa_13FeatureVector_4__iter__(struct __pyx_obj_3_sa_FeatureVector *__pyx_v_self); /* proto */
@@ -2766,11 +2827,12 @@ static char __pyx_k_138[] = "[X] ||| {0} ||| {1} ||| {2}";
 static char __pyx_k_139[] = "------------------------------";
 static char __pyx_k_141[] = "         Online Stats         ";
 static char __pyx_k_145[] = " : ";
-static char __pyx_k_151[] = "%s=%s";
-static char __pyx_k_154[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
-static char __pyx_k_155[] = "cdec.sa";
-static char __pyx_k_159[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
-static char __pyx_k_168[] = "*EPS*";
+static char __pyx_k_151[] = "OnlineFeatureContext";
+static char __pyx_k_154[] = "%s=%s";
+static char __pyx_k_157[] = "/home/m/workspace/cdec/python/src/sa/_sa.pyx";
+static char __pyx_k_158[] = "cdec.sa";
+static char __pyx_k_162[] = "/home/m/workspace/cdec/python/src/sa/sym.pxi";
+static char __pyx_k_173[] = "*EPS*";
 static char __pyx_k__FE[] = "FE";
 static char __pyx_k__al[] = "al";
 static char __pyx_k__fe[] = "fe";
@@ -2788,6 +2850,7 @@ static char __pyx_k__e_j[] = "e_j";
 static char __pyx_k__end[] = "end";
 static char __pyx_k__f_i[] = "f_i";
 static char __pyx_k__f_j[] = "f_j";
+static char __pyx_k__get[] = "get";
 static char __pyx_k__isa[] = "isa";
 static char __pyx_k__ito[] = "ito";
 static char __pyx_k__key[] = "key";
@@ -2795,10 +2858,12 @@ static char __pyx_k__lhs[] = "lhs";
 static char __pyx_k__low[] = "low";
 static char __pyx_k__map[] = "map";
 static char __pyx_k__max[] = "max";
+static char __pyx_k__ntc[] = "ntc";
 static char __pyx_k__pad[] = "pad";
 static char __pyx_k__pop[] = "pop";
 static char __pyx_k__res[] = "res";
 static char __pyx_k__set[] = "set";
+static char __pyx_k__sym[] = "sym";
 static char __pyx_k__vec[] = "vec";
 static char __pyx_k__zip[] = "zip";
 static char __pyx_k__NULL[] = "NULL";
@@ -2827,6 +2892,9 @@ static char __pyx_k__eword[] = "eword";
 static char __pyx_k__fword[] = "fword";
 static char __pyx_k__ifrom[] = "ifrom";
 static char __pyx_k__index[] = "index";
+static char __pyx_k__isvar[] = "isvar";
+static char __pyx_k__lex_i[] = "lex_i";
+static char __pyx_k__lex_j[] = "lex_j";
 static char __pyx_k__links[] = "links";
 static char __pyx_k__merge[] = "merge";
 static char __pyx_k__range[] = "range";
@@ -2854,6 +2922,7 @@ static char __pyx_k__link_j[] = "link_j";
 static char __pyx_k__logger[] = "logger";
 static char __pyx_k__lookup[] = "lookup";
 static char __pyx_k__offset[] = "offset";
+static char __pyx_k__online[] = "online";
 static char __pyx_k__phrase[] = "phrase";
 static char __pyx_k__q3sort[] = "q3sort";
 static char __pyx_k__sa_low[] = "sa_low";
@@ -2867,6 +2936,8 @@ static char __pyx_k__unlink[] = "unlink";
 static char __pyx_k__Counter[] = "Counter";
 static char __pyx_k__advance[] = "advance";
 static char __pyx_k__arr_low[] = "arr_low";
+static char __pyx_k__bilex_e[] = "bilex_e";
+static char __pyx_k__bilex_f[] = "bilex_f";
 static char __pyx_k__collect[] = "collect";
 static char __pyx_k__e_words[] = "e_words";
 static char __pyx_k__edarray[] = "edarray";
@@ -2893,6 +2964,7 @@ static char __pyx_k____name__[] = "__name__";
 static char __pyx_k____test__[] = "__test__";
 static char __pyx_k___columns[] = "_columns";
 static char __pyx_k__arr_high[] = "arr_high";
+static char __pyx_k__bilex_fe[] = "bilex_fe";
 static char __pyx_k__category[] = "category";
 static char __pyx_k__children[] = "children";
 static char __pyx_k__curr_idx[] = "curr_idx";
@@ -2927,6 +2999,8 @@ static char __pyx_k__increment[] = "increment";
 static char __pyx_k__iteritems[] = "iteritems";
 static char __pyx_k__itertools[] = "itertools";
 static char __pyx_k__min_bound[] = "min_bound";
+static char __pyx_k__new_lex_i[] = "new_lex_i";
+static char __pyx_k__new_lex_j[] = "new_lex_j";
 static char __pyx_k__paircount[] = "paircount";
 static char __pyx_k__partition[] = "partition";
 static char __pyx_k__reachable[] = "reachable";
@@ -2971,6 +3045,7 @@ static char __pyx_k__StopIteration[] = "StopIteration";
 static char __pyx_k__alphabet_size[] = "alphabet_size";
 static char __pyx_k__from_iterable[] = "from_iterable";
 static char __pyx_k__fsample_count[] = "fsample_count";
+static char __pyx_k__get_f_phrases[] = "get_f_phrases";
 static char __pyx_k__new_min_bound[] = "new_min_bound";
 static char __pyx_k__test_sentence[] = "test_sentence";
 static char __pyx_k__tight_phrases[] = "tight_phrases";
@@ -2992,8 +3067,10 @@ static char __pyx_k__max_initial_size[] = "max_initial_size";
 static char __pyx_k__max_nonterminals[] = "max_nonterminals";
 static char __pyx_k__reachable_buffer[] = "reachable_buffer";
 static char __pyx_k__use_collocations[] = "use_collocations";
+static char __pyx_k__dump_online_rules[] = "dump_online_rules";
 static char __pyx_k__max_target_chunks[] = "max_target_chunks";
 static char __pyx_k__max_target_length[] = "max_target_length";
+static char __pyx_k__online_ctx_lookup[] = "online_ctx_lookup";
 static char __pyx_k__train_min_gap_size[] = "train_min_gap_size";
 static char __pyx_k__pattern2phrase_plus[] = "pattern2phrase_plus";
 static PyObject *__pyx_kp_s_1;
@@ -3035,10 +3112,11 @@ static PyObject *__pyx_kp_s_139;
 static PyObject *__pyx_kp_s_14;
 static PyObject *__pyx_kp_s_141;
 static PyObject *__pyx_kp_s_145;
-static PyObject *__pyx_kp_s_151;
+static PyObject *__pyx_n_s_151;
 static PyObject *__pyx_kp_s_154;
-static PyObject *__pyx_kp_s_155;
-static PyObject *__pyx_kp_s_159;
+static PyObject *__pyx_kp_s_157;
+static PyObject *__pyx_kp_s_158;
+static PyObject *__pyx_kp_s_162;
 static PyObject *__pyx_kp_s_18;
 static PyObject *__pyx_kp_s_2;
 static PyObject *__pyx_kp_s_21;
@@ -3125,6 +3203,9 @@ static PyObject *__pyx_n_s__arity;
 static PyObject *__pyx_n_s__arr;
 static PyObject *__pyx_n_s__arr_high;
 static PyObject *__pyx_n_s__arr_low;
+static PyObject *__pyx_n_s__bilex_e;
+static PyObject *__pyx_n_s__bilex_f;
+static PyObject *__pyx_n_s__bilex_fe;
 static PyObject *__pyx_n_s__by_slack_factor;
 static PyObject *__pyx_n_s__category;
 static PyObject *__pyx_n_s__chain;
@@ -3140,6 +3221,7 @@ static PyObject *__pyx_n_s__decode_sentence;
 static PyObject *__pyx_n_s__decode_words;
 static PyObject *__pyx_n_s__defaultdict;
 static PyObject *__pyx_n_s__dist;
+static PyObject *__pyx_n_s__dump_online_rules;
 static PyObject *__pyx_n_s__e;
 static PyObject *__pyx_n_s__e_i;
 static PyObject *__pyx_n_s__e_j;
@@ -3181,9 +3263,11 @@ static PyObject *__pyx_n_s__fword;
 static PyObject *__pyx_n_s__fwords;
 static PyObject *__pyx_n_s__gc;
 static PyObject *__pyx_n_s__genexpr;
+static PyObject *__pyx_n_s__get;
 static PyObject *__pyx_n_s__getLogger;
 static PyObject *__pyx_n_s__get_e_id;
 static PyObject *__pyx_n_s__get_f_id;
+static PyObject *__pyx_n_s__get_f_phrases;
 static PyObject *__pyx_n_s__get_id;
 static PyObject *__pyx_n_s__get_next_states;
 static PyObject *__pyx_n_s__get_word;
@@ -3203,6 +3287,7 @@ static PyObject *__pyx_n_s__input_match;
 static PyObject *__pyx_n_s__input_span;
 static PyObject *__pyx_n_s__insert;
 static PyObject *__pyx_n_s__isa;
+static PyObject *__pyx_n_s__isvar;
 static PyObject *__pyx_n_s__iteritems;
 static PyObject *__pyx_n_s__itertools;
 static PyObject *__pyx_n_s__itervalues;
@@ -3212,6 +3297,8 @@ static PyObject *__pyx_n_s__join;
 static PyObject *__pyx_n_s__k;
 static PyObject *__pyx_n_s__key;
 static PyObject *__pyx_n_s__lattice;
+static PyObject *__pyx_n_s__lex_i;
+static PyObject *__pyx_n_s__lex_j;
 static PyObject *__pyx_n_s__lhs;
 static PyObject *__pyx_n_s__link;
 static PyObject *__pyx_n_s__link_i;
@@ -3240,14 +3327,19 @@ static PyObject *__pyx_n_s__name;
 static PyObject *__pyx_n_s__namedtuple;
 static PyObject *__pyx_n_s__new_e_i;
 static PyObject *__pyx_n_s__new_e_j;
+static PyObject *__pyx_n_s__new_lex_i;
+static PyObject *__pyx_n_s__new_lex_j;
 static PyObject *__pyx_n_s__new_min_bound;
 static PyObject *__pyx_n_s__next_states;
 static PyObject *__pyx_n_s__nt;
 static PyObject *__pyx_n_s__nt_collision;
 static PyObject *__pyx_n_s__nt_open;
+static PyObject *__pyx_n_s__ntc;
 static PyObject *__pyx_n_s__num_subpatterns;
 static PyObject *__pyx_n_s__offset;
 static PyObject *__pyx_n_s__old_last_nt;
+static PyObject *__pyx_n_s__online;
+static PyObject *__pyx_n_s__online_ctx_lookup;
 static PyObject *__pyx_n_s__open;
 static PyObject *__pyx_n_s__pad;
 static PyObject *__pyx_n_s__paircount;
@@ -3302,6 +3394,7 @@ static PyObject *__pyx_n_s__start;
 static PyObject *__pyx_n_s__stats;
 static PyObject *__pyx_n_s__stop;
 static PyObject *__pyx_n_s__suffix_link;
+static PyObject *__pyx_n_s__sym;
 static PyObject *__pyx_n_s__syms;
 static PyObject *__pyx_n_s__test_sentence;
 static PyObject *__pyx_n_s__tight_phrases;
@@ -3397,25 +3490,29 @@ static PyObject *__pyx_k_tuple_148;
 static PyObject *__pyx_k_tuple_149;
 static PyObject *__pyx_k_tuple_150;
 static PyObject *__pyx_k_tuple_152;
-static PyObject *__pyx_k_tuple_156;
-static PyObject *__pyx_k_tuple_157;
+static PyObject *__pyx_k_tuple_155;
+static PyObject *__pyx_k_tuple_159;
 static PyObject *__pyx_k_tuple_160;
-static PyObject *__pyx_k_tuple_162;
-static PyObject *__pyx_k_tuple_164;
-static PyObject *__pyx_k_tuple_166;
+static PyObject *__pyx_k_tuple_163;
+static PyObject *__pyx_k_tuple_165;
+static PyObject *__pyx_k_tuple_167;
 static PyObject *__pyx_k_tuple_169;
 static PyObject *__pyx_k_tuple_171;
-static PyObject *__pyx_k_tuple_173;
+static PyObject *__pyx_k_tuple_174;
+static PyObject *__pyx_k_tuple_176;
+static PyObject *__pyx_k_tuple_178;
 static PyObject *__pyx_k_codeobj_135;
 static PyObject *__pyx_k_codeobj_153;
-static PyObject *__pyx_k_codeobj_158;
+static PyObject *__pyx_k_codeobj_156;
 static PyObject *__pyx_k_codeobj_161;
-static PyObject *__pyx_k_codeobj_163;
-static PyObject *__pyx_k_codeobj_165;
-static PyObject *__pyx_k_codeobj_167;
+static PyObject *__pyx_k_codeobj_164;
+static PyObject *__pyx_k_codeobj_166;
+static PyObject *__pyx_k_codeobj_168;
 static PyObject *__pyx_k_codeobj_170;
 static PyObject *__pyx_k_codeobj_172;
-static PyObject *__pyx_k_codeobj_174;
+static PyObject *__pyx_k_codeobj_175;
+static PyObject *__pyx_k_codeobj_177;
+static PyObject *__pyx_k_codeobj_179;
 
 /* "_sa.pyx":5
  * import gzip
@@ -23624,7 +23721,7 @@ static int __pyx_f_3_sa_sym_fromstring(char *__pyx_v_string, int __pyx_v_termina
  * cdef int sym_fromstring(char* string, bint terminal):
  *     return ALPHABET.fromstring(string, terminal)             # <<<<<<<<<<<<<<
  * 
- * def make_lattice(words):
+ * def isvar(sym):
  */
   __pyx_r = ((struct __pyx_vtabstruct_3_sa_Alphabet *)__pyx_v_3_sa_ALPHABET->__pyx_vtab)->fromstring(__pyx_v_3_sa_ALPHABET, __pyx_v_string, __pyx_v_terminal);
   goto __pyx_L0;
@@ -23636,19 +23733,76 @@ static int __pyx_f_3_sa_sym_fromstring(char *__pyx_v_string, int __pyx_v_termina
 }
 
 /* Python wrapper */
-static PyObject *__pyx_pw_3_sa_3make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words); /*proto*/
-static PyMethodDef __pyx_mdef_3_sa_3make_lattice = {__Pyx_NAMESTR("make_lattice"), (PyCFunction)__pyx_pw_3_sa_3make_lattice, METH_O, __Pyx_DOCSTR(0)};
-static PyObject *__pyx_pw_3_sa_3make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words) {
+static PyObject *__pyx_pw_3_sa_3isvar(PyObject *__pyx_self, PyObject *__pyx_v_sym); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_3isvar = {__Pyx_NAMESTR("isvar"), (PyCFunction)__pyx_pw_3_sa_3isvar, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_3isvar(PyObject *__pyx_self, PyObject *__pyx_v_sym) {
+  PyObject *__pyx_r = 0;
+  __Pyx_RefNannyDeclarations
+  __Pyx_RefNannySetupContext("isvar (wrapper)", 0);
+  __pyx_r = __pyx_pf_3_sa_2isvar(__pyx_self, ((PyObject *)__pyx_v_sym));
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
+ *     return ALPHABET.fromstring(string, terminal)
+ * 
+ * def isvar(sym):             # <<<<<<<<<<<<<<
+ *     return sym_isvar(sym)
+ * 
+ */
+
+static PyObject *__pyx_pf_3_sa_2isvar(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_sym) {
+  PyObject *__pyx_r = NULL;
+  __Pyx_RefNannyDeclarations
+  int __pyx_t_1;
+  PyObject *__pyx_t_2 = NULL;
+  int __pyx_lineno = 0;
+  const char *__pyx_filename = NULL;
+  int __pyx_clineno = 0;
+  __Pyx_RefNannySetupContext("isvar", 0);
+
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+ * 
+ * def isvar(sym):
+ *     return sym_isvar(sym)             # <<<<<<<<<<<<<<
+ * 
+ * def make_lattice(words):
+ */
+  __Pyx_XDECREF(__pyx_r);
+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_sym); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_isvar(__pyx_t_1)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_2);
+  __pyx_r = __pyx_t_2;
+  __pyx_t_2 = 0;
+  goto __pyx_L0;
+
+  __pyx_r = Py_None; __Pyx_INCREF(Py_None);
+  goto __pyx_L0;
+  __pyx_L1_error:;
+  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_AddTraceback("_sa.isvar", __pyx_clineno, __pyx_lineno, __pyx_filename);
+  __pyx_r = NULL;
+  __pyx_L0:;
+  __Pyx_XGIVEREF(__pyx_r);
+  __Pyx_RefNannyFinishContext();
+  return __pyx_r;
+}
+
+/* Python wrapper */
+static PyObject *__pyx_pw_3_sa_5make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_5make_lattice = {__Pyx_NAMESTR("make_lattice"), (PyCFunction)__pyx_pw_3_sa_5make_lattice, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_5make_lattice(PyObject *__pyx_self, PyObject *__pyx_v_words) {
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
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-  __pyx_r = __pyx_pf_3_sa_2make_lattice(__pyx_self, ((PyObject *)__pyx_v_words));
+  __pyx_r = __pyx_pf_3_sa_4make_lattice(__pyx_self, ((PyObject *)__pyx_v_words));
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 }
 static PyObject *__pyx_gb_3_sa_12make_lattice_2generator7(__pyx_GeneratorObject *__pyx_generator, PyObject *__pyx_sent_value); /* proto */
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
  * 
  * def make_lattice(words):
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@@ -23674,7 +23828,7 @@ static PyObject *__pyx_pf_3_sa_12make_lattice_genexpr(PyObject *__pyx_self) {
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
   {
-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_12make_lattice_2generator7, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_12make_lattice_2generator7, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -23711,13 +23865,13 @@ static PyObject *__pyx_gb_3_sa_12make_lattice_2generator7(__pyx_GeneratorObject
     return NULL;
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   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_words)) { __Pyx_RaiseClosureNameError("words"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_words)) { __Pyx_RaiseClosureNameError("words"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_words); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -23725,23 +23879,23 @@ static PyObject *__pyx_gb_3_sa_12make_lattice_2generator7(__pyx_GeneratorObject
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+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_5 = PyBytes_AsString(__pyx_cur_scope->__pyx_v_word); if (unlikely((!__pyx_t_5) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_f_3_sa_sym_fromstring(__pyx_t_5, 1)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
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+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_cur_scope->__pyx_outer_scope->__pyx_v_word_ids)) { __Pyx_RaiseClosureNameError("word_ids"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
- *     return ALPHABET.fromstring(string, terminal)
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
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-static PyObject *__pyx_pf_3_sa_2make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words) {
+static PyObject *__pyx_pf_3_sa_4make_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_words) {
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":108
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
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+  __pyx_t_1 = __pyx_pf_3_sa_12make_lattice_genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":109
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
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+  __pyx_t_1 = __pyx_pf_3_sa_12make_lattice_3genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 /* Python wrapper */
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
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+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_14decode_lattice_2generator9, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_RefNannyFinishContext();
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@@ -24107,27 +24261,27 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
     return NULL;
   }
   __pyx_L3_first_run:;
-  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":113
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
  * def decode_lattice(lattice):
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  * 
  * def decode_sentence(lattice):
  */
-  if (unlikely(!__pyx_cur_scope->__pyx_v_arc)) { __Pyx_RaiseUnboundLocalError("arc"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+  if (unlikely(!__pyx_cur_scope->__pyx_v_arc)) { __Pyx_RaiseUnboundLocalError("arc"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
   if (PyList_CheckExact(__pyx_cur_scope->__pyx_v_arc) || PyTuple_CheckExact(__pyx_cur_scope->__pyx_v_arc)) {
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   } else {
-    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_arc); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_arc); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   }
   for (;;) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
+    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
  * 
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       if (__pyx_t_2 >= PyList_GET_SIZE(__pyx_t_1)) break;
       #if CYTHON_COMPILING_IN_CPYTHON
-      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_2); __Pyx_INCREF(__pyx_t_4); __pyx_t_2++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24169,7 +24323,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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         if (size > 3) __Pyx_RaiseTooManyValuesError(3);
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-        {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24185,15 +24339,15 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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-      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-      __pyx_t_7 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PySequence_ITEM(sequence, 2); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_8 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24203,7 +24357,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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-      if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 3) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (__Pyx_IternextUnpackEndCheck(__pyx_t_9(__pyx_t_8), 3) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24211,7 +24365,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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       __pyx_t_9 = NULL;
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-      {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24230,19 +24384,19 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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     __pyx_t_7 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":113
+    /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
  * def decode_lattice(lattice):
  *     return tuple((sym_tostring(sym), weight, dist) for (sym, weight, dist) in arc
  *             for arc in node for node in lattice)             # <<<<<<<<<<<<<<
  * 
  * def decode_sentence(lattice):
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-    if (unlikely(!__pyx_cur_scope->__pyx_v_node)) { __Pyx_RaiseUnboundLocalError("node"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+    if (unlikely(!__pyx_cur_scope->__pyx_v_node)) { __Pyx_RaiseUnboundLocalError("node"); {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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     } else {
-      __pyx_t_10 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_node); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_10 = -1; __pyx_t_4 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_node); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_7 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyList_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyTuple_GET_ITEM(__pyx_t_4, __pyx_t_10); __Pyx_INCREF(__pyx_t_7); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PySequence_ITEM(__pyx_t_4, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -24277,12 +24431,12 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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+        __pyx_t_12 = -1; __pyx_t_7 = PyObject_GetIter(__pyx_cur_scope->__pyx_outer_scope->__pyx_v_lattice); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_6 = PyList_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_6 = PyTuple_GET_ITEM(__pyx_t_7, __pyx_t_12); __Pyx_INCREF(__pyx_t_6); __pyx_t_12++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_6 = PySequence_ITEM(__pyx_t_7, __pyx_t_12); __pyx_t_12++; if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
+        /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
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   return NULL;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
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@@ -24407,7 +24561,7 @@ static PyObject *__pyx_gb_3_sa_14decode_lattice_2generator9(__pyx_GeneratorObjec
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+static PyObject *__pyx_pf_3_sa_6decode_lattice(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_lattice) {
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":112
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+  __pyx_t_1 = __pyx_pf_3_sa_14decode_lattice_genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 /* Python wrapper */
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-static PyObject *__pyx_pw_3_sa_7decode_sentence(PyObject *__pyx_self, PyObject *__pyx_v_lattice) {
+static PyObject *__pyx_pw_3_sa_9decode_sentence(PyObject *__pyx_self, PyObject *__pyx_v_lattice); /*proto*/
+static PyMethodDef __pyx_mdef_3_sa_9decode_sentence = {__Pyx_NAMESTR("decode_sentence"), (PyCFunction)__pyx_pw_3_sa_9decode_sentence, METH_O, __Pyx_DOCSTR(0)};
+static PyObject *__pyx_pw_3_sa_9decode_sentence(PyObject *__pyx_self, PyObject *__pyx_v_lattice) {
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+  __pyx_r = __pyx_pf_3_sa_8decode_sentence(__pyx_self, ((PyObject *)__pyx_v_lattice));
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":119
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   __Pyx_GIVEREF(__pyx_cur_scope->__pyx_outer_scope);
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-    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_15decode_sentence_2generator10, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_GeneratorObject *gen = __Pyx_Generator_New((__pyx_generator_body_t) __pyx_gb_3_sa_15decode_sentence_2generator10, (PyObject *) __pyx_cur_scope); if (unlikely(!gen)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (unlikely(!__pyx_sent_value)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":116
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-/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
+/* "/home/m/workspace/cdec/python/src/sa/sym.pxi":125
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+    __pyx_t_5 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_sym); if (unlikely((__pyx_t_5 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyBytes_FromString(__pyx_f_3_sa_sym_tostring(__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-static PyObject *__pyx_pf_3_sa_10decode_words(CYTHON_UNUSED PyObject *__pyx_self, PyObject *__pyx_v_syms) {
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":122
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+  __pyx_t_1 = __pyx_pf_3_sa_12decode_words_genexpr(((PyObject*)__pyx_cur_scope)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":39
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":40
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+  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 50; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":37
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":47
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+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 57; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":48
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":49
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":50
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":43
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":44
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":45
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+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 1, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 67; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":57
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":58
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":59
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":61
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":63
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":56
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":83
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+      __pyx_v_num_subpatterns = __Pyx_PyInt_AsInt(values[5]); if (unlikely((__pyx_v_num_subpatterns == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 97; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("__cinit__", 0, 0, 6, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":86
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":88
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":89
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":90
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":91
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":92
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+  if (!(likely(((__pyx_v_arr) == Py_None) || likely(__Pyx_TypeTest(__pyx_v_arr, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_DECREF(((PyObject *)__pyx_v_self->arr));
   __pyx_v_self->arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_v_arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":93
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":103
  *         self.arr_high = arr_high
  *         self.arr = arr
  *         self.num_subpatterns = num_subpatterns             # <<<<<<<<<<<<<<
@@ -37742,11 +37896,11 @@ static int __pyx_pw_3_sa_7Sampler_1__cinit__(PyObject *__pyx_v_self, PyObject *_
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         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__fsarray)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 2, 2, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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       goto __pyx_L5_argtuple_error;
@@ -37754,18 +37908,18 @@ static int __pyx_pw_3_sa_7Sampler_1__cinit__(PyObject *__pyx_v_self, PyObject *_
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-    __pyx_v_sample_size = __Pyx_PyInt_AsInt(values[0]); if (unlikely((__pyx_v_sample_size == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+    __pyx_v_sample_size = __Pyx_PyInt_AsInt(values[0]); if (unlikely((__pyx_v_sample_size == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     __pyx_v_fsarray = ((struct __pyx_obj_3_sa_SuffixArray *)values[1]);
   }
   goto __pyx_L4_argument_unpacking_done;
   __pyx_L5_argtuple_error:;
-  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("__cinit__", 1, 2, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fsarray), __pyx_ptype_3_sa_SuffixArray, 1, "fsarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_fsarray), __pyx_ptype_3_sa_SuffixArray, 1, "fsarray", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 113; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_3_sa_7Sampler___cinit__(((struct __pyx_obj_3_sa_Sampler *)__pyx_v_self), __pyx_v_sample_size, __pyx_v_fsarray);
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -37775,7 +37929,7 @@ static int __pyx_pw_3_sa_7Sampler_1__cinit__(PyObject *__pyx_v_self, PyObject *_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":103
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":113
  *     cdef IntList sa
  * 
  *     def __cinit__(self, int sample_size, SuffixArray fsarray):             # <<<<<<<<<<<<<<
@@ -37795,7 +37949,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":104
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":114
  * 
  *     def __cinit__(self, int sample_size, SuffixArray fsarray):
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@@ -37804,7 +37958,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
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   __pyx_v_self->sample_size = __pyx_v_sample_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":105
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":115
  *     def __cinit__(self, int sample_size, SuffixArray fsarray):
  *         self.sample_size = sample_size
  *         self.sa = fsarray.sa             # <<<<<<<<<<<<<<
@@ -37817,7 +37971,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
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   __pyx_v_self->sa = __pyx_v_fsarray->sa;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":106
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":116
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  *         self.sa = fsarray.sa
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@@ -37827,21 +37981,21 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":107
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":117
  *         self.sa = fsarray.sa
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  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)             # <<<<<<<<<<<<<<
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-    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_2 = PyInt_FromLong(__pyx_v_sample_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong(__pyx_v_sample_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_4);
     __Pyx_INCREF(((PyObject *)__pyx_kp_s_100));
     PyTuple_SET_ITEM(__pyx_t_4, 0, ((PyObject *)__pyx_kp_s_100));
@@ -37849,7 +38003,7 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
     PyTuple_SET_ITEM(__pyx_t_4, 1, __pyx_t_2);
     __Pyx_GIVEREF(__pyx_t_2);
     __pyx_t_2 = 0;
-    __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __Pyx_DECREF(((PyObject *)__pyx_t_4)); __pyx_t_4 = 0;
@@ -37858,19 +38012,19 @@ static int __pyx_pf_3_sa_7Sampler___cinit__(struct __pyx_obj_3_sa_Sampler *__pyx
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":109
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":119
  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)
  *         else:
  *             logger.info("Sampling strategy: no sampling")             # <<<<<<<<<<<<<<
  * 
  *     def sample(self, PhraseLocation phrase_location):
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-    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_2 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_k_tuple_102), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_k_tuple_102), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -37897,7 +38051,7 @@ static PyObject *__pyx_pw_3_sa_7Sampler_3sample(PyObject *__pyx_v_self, PyObject
   PyObject *__pyx_r = 0;
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("sample (wrapper)", 0);
-  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_phrase_location), __pyx_ptype_3_sa_PhraseLocation, 1, "phrase_location", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (unlikely(!__Pyx_ArgTypeTest(((PyObject *)__pyx_v_phrase_location), __pyx_ptype_3_sa_PhraseLocation, 1, "phrase_location", 0))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_r = __pyx_pf_3_sa_7Sampler_2sample(((struct __pyx_obj_3_sa_Sampler *)__pyx_v_self), ((struct __pyx_obj_3_sa_PhraseLocation *)__pyx_v_phrase_location));
   goto __pyx_L0;
   __pyx_L1_error:;
@@ -37907,7 +38061,7 @@ static PyObject *__pyx_pw_3_sa_7Sampler_3sample(PyObject *__pyx_v_self, PyObject
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":111
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":121
  *             logger.info("Sampling strategy: no sampling")
  * 
  *     def sample(self, PhraseLocation phrase_location):             # <<<<<<<<<<<<<<
@@ -37934,19 +38088,19 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("sample", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":124
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":134
  *         cdef int num_locations, val, j
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  *         sample = IntList()             # <<<<<<<<<<<<<<
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
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-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 134; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":125
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":135
  * 
  *         sample = IntList()
  *         if phrase_location.arr is None:             # <<<<<<<<<<<<<<
@@ -37956,7 +38110,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   __pyx_t_2 = (((PyObject *)__pyx_v_phrase_location->arr) == Py_None);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":126
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":136
  *         sample = IntList()
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low             # <<<<<<<<<<<<<<
@@ -37965,7 +38119,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
     __pyx_v_num_locations = (__pyx_v_phrase_location->sa_high - __pyx_v_phrase_location->sa_low);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":127
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":137
  *         if phrase_location.arr is None:
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
  *             if self.sample_size == -1 or num_locations <= self.sample_size:             # <<<<<<<<<<<<<<
@@ -37981,7 +38135,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":128
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":138
  *             num_locations = phrase_location.sa_high - phrase_location.sa_low
  *             if self.sample_size == -1 or num_locations <= self.sample_size:
  *                 sample._extend_arr(self.sa.arr + phrase_location.sa_low, num_locations)             # <<<<<<<<<<<<<<
@@ -37993,7 +38147,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":130
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":140
  *                 sample._extend_arr(self.sa.arr + phrase_location.sa_low, num_locations)
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)             # <<<<<<<<<<<<<<
@@ -38002,11 +38156,11 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       if (unlikely(((double)__pyx_v_self->sample_size) == 0)) {
         PyErr_Format(PyExc_ZeroDivisionError, "float division");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 130; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       __pyx_v_stepsize = (((double)__pyx_v_num_locations) / ((double)__pyx_v_self->sample_size));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":131
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":141
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.sa_low             # <<<<<<<<<<<<<<
@@ -38015,7 +38169,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       __pyx_v_i = __pyx_v_phrase_location->sa_low;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":132
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":142
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.sa_low
  *                 while i < phrase_location.sa_high and sample.len < self.sample_size:             # <<<<<<<<<<<<<<
@@ -38032,7 +38186,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":135
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":145
  *                     '''Note: int(i) not guaranteed to have the desired
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:             # <<<<<<<<<<<<<<
@@ -38042,7 +38196,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         __pyx_t_3 = (fmod(__pyx_v_i, 1.0) > 0.5);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":136
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":146
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:
  *                         val = int(ceil(i))             # <<<<<<<<<<<<<<
@@ -38054,7 +38208,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":138
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":148
  *                         val = int(ceil(i))
  *                     else:
  *                         val = int(floor(i))             # <<<<<<<<<<<<<<
@@ -38065,7 +38219,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         __pyx_L7:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":139
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":149
  *                     else:
  *                         val = int(floor(i))
  *                     sample._append(self.sa.arr[val])             # <<<<<<<<<<<<<<
@@ -38074,7 +38228,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_sample->__pyx_vtab)->_append(__pyx_v_sample, (__pyx_v_self->sa->arr[__pyx_v_val]));
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":140
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":150
  *                         val = int(floor(i))
  *                     sample._append(self.sa.arr[val])
  *                     i = i + stepsize             # <<<<<<<<<<<<<<
@@ -38089,7 +38243,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":142
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":152
  *                     i = i + stepsize
  *         else:
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns             # <<<<<<<<<<<<<<
@@ -38099,15 +38253,15 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     __pyx_t_5 = (__pyx_v_phrase_location->arr_high - __pyx_v_phrase_location->arr_low);
     if (unlikely(__pyx_v_phrase_location->num_subpatterns == 0)) {
       PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     }
     else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_phrase_location->num_subpatterns == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_5))) {
       PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 152; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     }
     __pyx_v_num_locations = __Pyx_div_int(__pyx_t_5, __pyx_v_phrase_location->num_subpatterns);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":143
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":153
  *         else:
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns
  *             if self.sample_size == -1 or num_locations <= self.sample_size:             # <<<<<<<<<<<<<<
@@ -38123,7 +38277,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":144
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":154
  *             num_locations = (phrase_location.arr_high - phrase_location.arr_low) / phrase_location.num_subpatterns
  *             if self.sample_size == -1 or num_locations <= self.sample_size:
  *                 sample = phrase_location.arr             # <<<<<<<<<<<<<<
@@ -38137,7 +38291,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":146
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":156
  *                 sample = phrase_location.arr
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)             # <<<<<<<<<<<<<<
@@ -38146,11 +38300,11 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       if (unlikely(((double)__pyx_v_self->sample_size) == 0)) {
         PyErr_Format(PyExc_ZeroDivisionError, "float division");
-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 146; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 156; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       }
       __pyx_v_stepsize = (((double)__pyx_v_num_locations) / ((double)__pyx_v_self->sample_size));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":147
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":157
  *             else:
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.arr_low             # <<<<<<<<<<<<<<
@@ -38159,7 +38313,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
       __pyx_v_i = __pyx_v_phrase_location->arr_low;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":148
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":158
  *                 stepsize = float(num_locations)/float(self.sample_size)
  *                 i = phrase_location.arr_low
  *                 while i < num_locations and sample.len < self.sample_size * phrase_location.num_subpatterns:             # <<<<<<<<<<<<<<
@@ -38176,7 +38330,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         if (!__pyx_t_4) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":151
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":161
  *                     '''Note: int(i) not guaranteed to have the desired
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:             # <<<<<<<<<<<<<<
@@ -38186,7 +38340,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         __pyx_t_4 = (fmod(__pyx_v_i, 1.0) > 0.5);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":152
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":162
  *                     effect, according to the python documentation'''
  *                     if fmod(i,1.0) > 0.5:
  *                         val = int(ceil(i))             # <<<<<<<<<<<<<<
@@ -38198,7 +38352,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":154
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":164
  *                         val = int(ceil(i))
  *                     else:
  *                         val = int(floor(i))             # <<<<<<<<<<<<<<
@@ -38209,7 +38363,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
         }
         __pyx_L11:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":155
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":165
  *                     else:
  *                         val = int(floor(i))
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)             # <<<<<<<<<<<<<<
@@ -38218,7 +38372,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         __pyx_v_j = (__pyx_v_phrase_location->arr_low + (__pyx_v_val * __pyx_v_phrase_location->num_subpatterns));
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":156
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":166
  *                         val = int(floor(i))
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)             # <<<<<<<<<<<<<<
@@ -38227,7 +38381,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
  */
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_sample->__pyx_vtab)->_extend_arr(__pyx_v_sample, (__pyx_v_phrase_location->arr->arr + __pyx_v_j), __pyx_v_phrase_location->num_subpatterns);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":157
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":167
  *                     j = phrase_location.arr_low + (val*phrase_location.num_subpatterns)
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)
  *                     i = i + stepsize             # <<<<<<<<<<<<<<
@@ -38241,7 +38395,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":158
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":168
  *                     sample._extend_arr(phrase_location.arr.arr + j, phrase_location.num_subpatterns)
  *                     i = i + stepsize
  *         return sample             # <<<<<<<<<<<<<<
@@ -38266,7 +38420,7 @@ static PyObject *__pyx_pf_3_sa_7Sampler_2sample(struct __pyx_obj_3_sa_Sampler *_
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":170
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":180
  * 
  * 
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):             # <<<<<<<<<<<<<<
@@ -38278,7 +38432,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("assign_matching", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":171
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":181
  * 
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):
  *     m.arr = arr             # <<<<<<<<<<<<<<
@@ -38287,7 +38441,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->arr = __pyx_v_arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":172
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":182
  * cdef void assign_matching(Matching* m, int* arr, int start, int step, int* sent_id_arr):
  *     m.arr = arr
  *     m.start = start             # <<<<<<<<<<<<<<
@@ -38296,7 +38450,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->start = __pyx_v_start;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":173
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":183
  *     m.arr = arr
  *     m.start = start
  *     m.end = start + step             # <<<<<<<<<<<<<<
@@ -38305,7 +38459,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->end = (__pyx_v_start + __pyx_v_step);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":174
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":184
  *     m.start = start
  *     m.end = start + step
  *     m.sent_id = sent_id_arr[arr[start]]             # <<<<<<<<<<<<<<
@@ -38314,7 +38468,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
  */
   __pyx_v_m->sent_id = (__pyx_v_sent_id_arr[(__pyx_v_arr[__pyx_v_start])]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":175
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":185
  *     m.end = start + step
  *     m.sent_id = sent_id_arr[arr[start]]
  *     m.size = step             # <<<<<<<<<<<<<<
@@ -38326,7 +38480,7 @@ static void __pyx_f_3_sa_assign_matching(struct __pyx_t_3_sa_Matching *__pyx_v_m
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":178
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":188
  * 
  * 
  * cdef int* append_combined_matching(int* arr, Matching* loc1, Matching* loc2,             # <<<<<<<<<<<<<<
@@ -38343,7 +38497,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   int __pyx_t_2;
   __Pyx_RefNannySetupContext("append_combined_matching", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":182
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":192
  *     cdef int i, new_len
  * 
  *     new_len = result_len[0] + num_subpatterns             # <<<<<<<<<<<<<<
@@ -38352,7 +38506,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   __pyx_v_new_len = ((__pyx_v_result_len[0]) + __pyx_v_num_subpatterns);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":183
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":193
  * 
  *     new_len = result_len[0] + num_subpatterns
  *     arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38361,7 +38515,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":185
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":195
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  * 
  *     for i from 0 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -38371,7 +38525,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   __pyx_t_1 = __pyx_v_loc1->size;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_1; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":186
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":196
  * 
  *     for i from 0 <= i < loc1.size:
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]             # <<<<<<<<<<<<<<
@@ -38381,7 +38535,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
     (__pyx_v_arr[((__pyx_v_result_len[0]) + __pyx_v_i)]) = (__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":187
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":197
  *     for i from 0 <= i < loc1.size:
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]
  *     if num_subpatterns > loc1.size:             # <<<<<<<<<<<<<<
@@ -38391,7 +38545,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   __pyx_t_2 = (__pyx_v_num_subpatterns > __pyx_v_loc1->size);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":188
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":198
  *         arr[result_len[0]+i] = loc1.arr[loc1.start+i]
  *     if num_subpatterns > loc1.size:
  *         arr[new_len-1] = loc2.arr[loc2.end-1]             # <<<<<<<<<<<<<<
@@ -38403,7 +38557,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":189
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":199
  *     if num_subpatterns > loc1.size:
  *         arr[new_len-1] = loc2.arr[loc2.end-1]
  *     result_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -38412,7 +38566,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
  */
   (__pyx_v_result_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":190
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":200
  *         arr[new_len-1] = loc2.arr[loc2.end-1]
  *     result_len[0] = new_len
  *     return arr             # <<<<<<<<<<<<<<
@@ -38428,7 +38582,7 @@ static int *__pyx_f_3_sa_append_combined_matching(int *__pyx_v_arr, struct __pyx
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":193
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":203
  * 
  * 
  * cdef int* extend_arr(int* arr, int* arr_len, int* appendix, int appendix_len):             # <<<<<<<<<<<<<<
@@ -38442,7 +38596,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("extend_arr", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":196
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":206
  *     cdef int new_len
  * 
  *     new_len = arr_len[0] + appendix_len             # <<<<<<<<<<<<<<
@@ -38451,7 +38605,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   __pyx_v_new_len = ((__pyx_v_arr_len[0]) + __pyx_v_appendix_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":197
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":207
  * 
  *     new_len = arr_len[0] + appendix_len
  *     arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38460,7 +38614,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":198
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":208
  *     new_len = arr_len[0] + appendix_len
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -38469,7 +38623,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   memcpy((__pyx_v_arr + (__pyx_v_arr_len[0])), __pyx_v_appendix, (__pyx_v_appendix_len * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":199
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":209
  *     arr = <int*> realloc(arr, new_len*sizeof(int))
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))
  *     arr_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -38478,7 +38632,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
  */
   (__pyx_v_arr_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":200
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":210
  *     memcpy(arr+arr_len[0], appendix, appendix_len*sizeof(int))
  *     arr_len[0] = new_len
  *     return arr             # <<<<<<<<<<<<<<
@@ -38494,7 +38648,7 @@ static int *__pyx_f_3_sa_extend_arr(int *__pyx_v_arr, int *__pyx_v_arr_len, int
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":202
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":212
  *     return arr
  * 
  * cdef int median(int low, int high, int step):             # <<<<<<<<<<<<<<
@@ -38511,7 +38665,7 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("median", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":203
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":213
  * 
  * cdef int median(int low, int high, int step):
  *     return low + (((high - low)/step)/2)*step             # <<<<<<<<<<<<<<
@@ -38521,11 +38675,11 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   __pyx_t_1 = (__pyx_v_high - __pyx_v_low);
   if (unlikely(__pyx_v_step == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 213; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_1))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 203; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 213; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_r = (__pyx_v_low + (__Pyx_div_long(__Pyx_div_int(__pyx_t_1, __pyx_v_step), 2) * __pyx_v_step));
   goto __pyx_L0;
@@ -38540,7 +38694,7 @@ static int __pyx_f_3_sa_median(int __pyx_v_low, int __pyx_v_high, int __pyx_v_st
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":206
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":216
  * 
  * 
  * cdef void find_comparable_matchings(int low, int high, int* arr, int step, int loc, int* loc_minus, int* loc_plus):             # <<<<<<<<<<<<<<
@@ -38555,7 +38709,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
   int __pyx_t_3;
   __Pyx_RefNannySetupContext("find_comparable_matchings", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":210
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":220
  *     # in which all matchings have the same first index as the one
  *     # starting at loc
  *     loc_plus[0] = loc + step             # <<<<<<<<<<<<<<
@@ -38564,7 +38718,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
  */
   (__pyx_v_loc_plus[0]) = (__pyx_v_loc + __pyx_v_step);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":211
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":221
  *     # starting at loc
  *     loc_plus[0] = loc + step
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:             # <<<<<<<<<<<<<<
@@ -38581,7 +38735,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     }
     if (!__pyx_t_3) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":212
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":222
  *     loc_plus[0] = loc + step
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:
  *         loc_plus[0] = loc_plus[0] + step             # <<<<<<<<<<<<<<
@@ -38591,7 +38745,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     (__pyx_v_loc_plus[0]) = ((__pyx_v_loc_plus[0]) + __pyx_v_step);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":213
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":223
  *     while loc_plus[0] < high and arr[loc_plus[0]] == arr[loc]:
  *         loc_plus[0] = loc_plus[0] + step
  *     loc_minus[0] = loc             # <<<<<<<<<<<<<<
@@ -38600,7 +38754,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
  */
   (__pyx_v_loc_minus[0]) = __pyx_v_loc;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":214
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":224
  *         loc_plus[0] = loc_plus[0] + step
  *     loc_minus[0] = loc
  *     while loc_minus[0]-step >= low and arr[loc_minus[0]-step] == arr[loc]:             # <<<<<<<<<<<<<<
@@ -38617,7 +38771,7 @@ static void __pyx_f_3_sa_find_comparable_matchings(int __pyx_v_low, int __pyx_v_
     }
     if (!__pyx_t_2) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":215
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":225
  *     loc_minus[0] = loc
  *     while loc_minus[0]-step >= low and arr[loc_minus[0]-step] == arr[loc]:
  *         loc_minus[0] = loc_minus[0] - step             # <<<<<<<<<<<<<<
@@ -38661,7 +38815,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
     static PyObject **__pyx_pyargnames[] = {&__pyx_n_s__alignment,&__pyx_n_s__by_slack_factor,&__pyx_n_s__category,&__pyx_n_s__max_chunks,&__pyx_n_s__max_initial_size,&__pyx_n_s__max_length,&__pyx_n_s__max_nonterminals,&__pyx_n_s__max_target_chunks,&__pyx_n_s__max_target_length,&__pyx_n_s__min_gap_size,&__pyx_n_s__precompute_file,&__pyx_n_s_70,&__pyx_n_s__precompute_rank,&__pyx_n_s_103,&__pyx_n_s_104,&__pyx_n_s_71,&__pyx_n_s__train_min_gap_size,&__pyx_n_s__tight_phrases,&__pyx_n_s__use_baeza_yates,&__pyx_n_s__use_collocations,&__pyx_n_s__use_index,0};
     PyObject* values[21] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":283
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":295
  *             char* category="[X]",
  *             # maximum number of contiguous chunks of terminal symbols in RHS of a rule. If None, defaults to max_nonterminals+1
  *             max_chunks=None,             # <<<<<<<<<<<<<<
@@ -38670,7 +38824,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[3] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":291
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":303
  *             unsigned max_nonterminals=2,
  *             # maximum number of contiguous chunks of terminal symbols in target-side RHS of a rule. If None, defaults to max_nonterminals+1
  *             max_target_chunks=None,             # <<<<<<<<<<<<<<
@@ -38679,7 +38833,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[7] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":293
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":305
  *             max_target_chunks=None,
  *             # maximum number of target side symbols (both T and NT) allowed in a rule. If None, defaults to max_initial_size
  *             max_target_length=None,             # <<<<<<<<<<<<<<
@@ -38688,7 +38842,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
  */
     values[8] = ((PyObject *)Py_None);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":297
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":309
  *             unsigned min_gap_size=2,
  *             # filename of file containing precomputed collocations
  *             precompute_file=None,             # <<<<<<<<<<<<<<
@@ -38831,7 +38985,7 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
         }
       }
       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 275; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "__cinit__") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
       }
     } else {
       switch (PyTuple_GET_SIZE(__pyx_args)) {
@@ -38862,10 +39016,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
     }
     __pyx_v_alignment = ((struct __pyx_obj_3_sa_Alignment *)values[0]);
     if (values[1]) {
-      __pyx_v_by_slack_factor = __pyx_PyFloat_AsFloat(values[1]); if (unlikely((__pyx_v_by_slack_factor == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 279; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_by_slack_factor = __pyx_PyFloat_AsFloat(values[1]); if (unlikely((__pyx_v_by_slack_factor == (float)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 291; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":279
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":291
  *             Alignment alignment,
  *             # parameter for double-binary search; doesn't seem to matter much
  *             float by_slack_factor=1.0,             # <<<<<<<<<<<<<<
@@ -38875,49 +39029,49 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_by_slack_factor = ((float)1.0);
     }
     if (values[2]) {
-      __pyx_v_category = PyBytes_AsString(values[2]); if (unlikely((!__pyx_v_category) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 281; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_category = PyBytes_AsString(values[2]); if (unlikely((!__pyx_v_category) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 293; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_category = ((char *)__pyx_k_105);
     }
     __pyx_v_max_chunks = values[3];
     if (values[4]) {
-      __pyx_v_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[4]); if (unlikely((__pyx_v_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 285; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[4]); if (unlikely((__pyx_v_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 297; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_initial_size = ((unsigned int)10);
     }
     if (values[5]) {
-      __pyx_v_max_length = __Pyx_PyInt_AsUnsignedInt(values[5]); if (unlikely((__pyx_v_max_length == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 287; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_length = __Pyx_PyInt_AsUnsignedInt(values[5]); if (unlikely((__pyx_v_max_length == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 299; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_length = ((unsigned int)5);
     }
     if (values[6]) {
-      __pyx_v_max_nonterminals = __Pyx_PyInt_AsUnsignedInt(values[6]); if (unlikely((__pyx_v_max_nonterminals == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 289; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_max_nonterminals = __Pyx_PyInt_AsUnsignedInt(values[6]); if (unlikely((__pyx_v_max_nonterminals == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 301; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_max_nonterminals = ((unsigned int)2);
     }
     __pyx_v_max_target_chunks = values[7];
     __pyx_v_max_target_length = values[8];
     if (values[9]) {
-      __pyx_v_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[9]); if (unlikely((__pyx_v_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 295; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[9]); if (unlikely((__pyx_v_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 307; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_min_gap_size = ((unsigned int)2);
     }
     __pyx_v_precompute_file = values[10];
     if (values[11]) {
-      __pyx_v_precompute_secondary_rank = __Pyx_PyInt_AsUnsignedInt(values[11]); if (unlikely((__pyx_v_precompute_secondary_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 299; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_precompute_secondary_rank = __Pyx_PyInt_AsUnsignedInt(values[11]); if (unlikely((__pyx_v_precompute_secondary_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 311; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_precompute_secondary_rank = ((unsigned int)20);
     }
     if (values[12]) {
-      __pyx_v_precompute_rank = __Pyx_PyInt_AsUnsignedInt(values[12]); if (unlikely((__pyx_v_precompute_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 301; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_precompute_rank = __Pyx_PyInt_AsUnsignedInt(values[12]); if (unlikely((__pyx_v_precompute_rank == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 313; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_precompute_rank = ((unsigned int)100);
     }
     if (values[13]) {
-      __pyx_v_require_aligned_terminal = __Pyx_PyObject_IsTrue(values[13]); if (unlikely((__pyx_v_require_aligned_terminal == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 303; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_require_aligned_terminal = __Pyx_PyObject_IsTrue(values[13]); if (unlikely((__pyx_v_require_aligned_terminal == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":303
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":315
  *             unsigned precompute_rank=100,
  *             # require extracted rules to have at least one aligned word
  *             bint require_aligned_terminal=True,             # <<<<<<<<<<<<<<
@@ -38927,10 +39081,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_require_aligned_terminal = ((int)1);
     }
     if (values[14]) {
-      __pyx_v_require_aligned_chunks = __Pyx_PyObject_IsTrue(values[14]); if (unlikely((__pyx_v_require_aligned_chunks == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 305; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_require_aligned_chunks = __Pyx_PyObject_IsTrue(values[14]); if (unlikely((__pyx_v_require_aligned_chunks == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 317; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":305
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":317
  *             bint require_aligned_terminal=True,
  *             # require each contiguous chunk of extracted rules to have at least one aligned word
  *             bint require_aligned_chunks=False,             # <<<<<<<<<<<<<<
@@ -38940,20 +39094,20 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_require_aligned_chunks = ((int)0);
     }
     if (values[15]) {
-      __pyx_v_train_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[15]); if (unlikely((__pyx_v_train_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 307; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_train_max_initial_size = __Pyx_PyInt_AsUnsignedInt(values[15]); if (unlikely((__pyx_v_train_max_initial_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 319; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_max_initial_size = ((unsigned int)10);
     }
     if (values[16]) {
-      __pyx_v_train_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[16]); if (unlikely((__pyx_v_train_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 309; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_train_min_gap_size = __Pyx_PyInt_AsUnsignedInt(values[16]); if (unlikely((__pyx_v_train_min_gap_size == (unsigned int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 321; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
       __pyx_v_train_min_gap_size = ((unsigned int)2);
     }
     if (values[17]) {
-      __pyx_v_tight_phrases = __Pyx_PyObject_IsTrue(values[17]); if (unlikely((__pyx_v_tight_phrases == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 311; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_tight_phrases = __Pyx_PyObject_IsTrue(values[17]); if (unlikely((__pyx_v_tight_phrases == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 323; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":311
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
  *             unsigned train_min_gap_size=2,
  *             # False if phrases should be loose (better but slower), True otherwise
  *             bint tight_phrases=True,             # <<<<<<<<<<<<<<
@@ -38963,10 +39117,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_tight_phrases = ((int)1);
     }
     if (values[18]) {
-      __pyx_v_use_baeza_yates = __Pyx_PyObject_IsTrue(values[18]); if (unlikely((__pyx_v_use_baeza_yates == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 313; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_use_baeza_yates = __Pyx_PyObject_IsTrue(values[18]); if (unlikely((__pyx_v_use_baeza_yates == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 325; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":313
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
  *             bint tight_phrases=True,
  *             # True to require use of double-binary alg, false otherwise
  *             bint use_baeza_yates=True,             # <<<<<<<<<<<<<<
@@ -38976,10 +39130,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_use_baeza_yates = ((int)1);
     }
     if (values[19]) {
-      __pyx_v_use_collocations = __Pyx_PyObject_IsTrue(values[19]); if (unlikely((__pyx_v_use_collocations == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 315; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+      __pyx_v_use_collocations = __Pyx_PyObject_IsTrue(values[19]); if (unlikely((__pyx_v_use_collocations == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 327; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
     } else {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":315
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
  *             bint use_baeza_yates=True,
  *             # True to enable used of precomputed collocations
  *             bint use_collocations=True,             # <<<<<<<<<<<<<<
@@ -38989,10 +39143,10 @@ static int __pyx_pw_3_sa_23HieroCachingRuleFactory_1__cinit__(PyObject *__pyx_v_
       __pyx_v_use_collocations = ((int)1);
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":323
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":324
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":325
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":327
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":331
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   __pyx_v_self->max_initial_size = __pyx_v_max_initial_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":334
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":346
  *         self.max_nonterminals = max_nonterminals
  *         self.max_initial_size = max_initial_size
  *         self.train_max_initial_size = train_max_initial_size             # <<<<<<<<<<<<<<
@@ -39341,7 +39495,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->train_max_initial_size = __pyx_v_train_max_initial_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":335
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
  *         self.max_initial_size = max_initial_size
  *         self.train_max_initial_size = train_max_initial_size
  *         self.min_gap_size = min_gap_size             # <<<<<<<<<<<<<<
@@ -39350,7 +39504,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->min_gap_size = __pyx_v_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":336
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":348
  *         self.train_max_initial_size = train_max_initial_size
  *         self.min_gap_size = min_gap_size
  *         self.train_min_gap_size = train_min_gap_size             # <<<<<<<<<<<<<<
@@ -39359,7 +39513,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->train_min_gap_size = __pyx_v_train_min_gap_size;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":337
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
  *         self.min_gap_size = min_gap_size
  *         self.train_min_gap_size = train_min_gap_size
  *         self.category = sym_fromstring(category, False)             # <<<<<<<<<<<<<<
@@ -39368,7 +39522,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->category = __pyx_f_3_sa_sym_fromstring(__pyx_v_category, 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":339
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":351
  *         self.category = sym_fromstring(category, False)
  * 
  *         if max_chunks is None:             # <<<<<<<<<<<<<<
@@ -39378,7 +39532,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_chunks == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":340
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
  * 
  *         if max_chunks is None:
  *             self.max_chunks = self.max_nonterminals + 1             # <<<<<<<<<<<<<<
@@ -39390,19 +39544,19 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":342
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":354
  *             self.max_chunks = self.max_nonterminals + 1
  *         else:
  *             self.max_chunks = max_chunks             # <<<<<<<<<<<<<<
  * 
  *         if max_target_chunks is None:
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 342; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 354; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_chunks = __pyx_t_4;
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":344
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":356
  *             self.max_chunks = max_chunks
  * 
  *         if max_target_chunks is None:             # <<<<<<<<<<<<<<
@@ -39412,7 +39566,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_target_chunks == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":345
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":357
  * 
  *         if max_target_chunks is None:
  *             self.max_target_chunks = self.max_nonterminals + 1             # <<<<<<<<<<<<<<
@@ -39424,19 +39578,19 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":347
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":359
  *             self.max_target_chunks = self.max_nonterminals + 1
  *         else:
  *             self.max_target_chunks = max_target_chunks             # <<<<<<<<<<<<<<
  * 
  *         if max_target_length is None:
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 347; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_chunks); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 359; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_target_chunks = __pyx_t_4;
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":349
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":361
  *             self.max_target_chunks = max_target_chunks
  * 
  *         if max_target_length is None:             # <<<<<<<<<<<<<<
@@ -39446,7 +39600,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_t_3 = (__pyx_v_max_target_length == Py_None);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":350
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":362
  * 
  *         if max_target_length is None:
  *             self.max_target_length = max_initial_size             # <<<<<<<<<<<<<<
@@ -39458,26 +39612,26 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":352
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":364
  *             self.max_target_length = max_initial_size
  *         else:
  *             self.max_target_length = max_target_length             # <<<<<<<<<<<<<<
  * 
  *         # algorithmic parameters and settings
  */
-    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_length); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 352; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_v_max_target_length); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 364; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __pyx_v_self->max_target_length = __pyx_t_4;
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":355
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":367
  * 
  *         # algorithmic parameters and settings
  *         self.precomputed_collocations = {}             # <<<<<<<<<<<<<<
  *         self.precomputed_index = {}
  *         self.use_index = use_index
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 355; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 367; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->precomputed_collocations);
@@ -39485,14 +39639,14 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->precomputed_collocations = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":356
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":368
  *         # algorithmic parameters and settings
  *         self.precomputed_collocations = {}
  *         self.precomputed_index = {}             # <<<<<<<<<<<<<<
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 356; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 368; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->precomputed_index);
@@ -39500,7 +39654,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->precomputed_index = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":357
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":369
  *         self.precomputed_collocations = {}
  *         self.precomputed_index = {}
  *         self.use_index = use_index             # <<<<<<<<<<<<<<
@@ -39509,7 +39663,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_index = __pyx_v_use_index;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":358
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":370
  *         self.precomputed_index = {}
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations             # <<<<<<<<<<<<<<
@@ -39518,14 +39672,14 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_collocations = __pyx_v_use_collocations;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":359
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":371
  *         self.use_index = use_index
  *         self.use_collocations = use_collocations
  *         self.max_rank = {}             # <<<<<<<<<<<<<<
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 359; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 371; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
   __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
   __Pyx_GOTREF(__pyx_v_self->max_rank);
@@ -39533,7 +39687,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->max_rank = ((PyObject *)__pyx_t_2);
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":360
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":372
  *         self.use_collocations = use_collocations
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file             # <<<<<<<<<<<<<<
@@ -39546,7 +39700,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __Pyx_DECREF(__pyx_v_self->precompute_file);
   __pyx_v_self->precompute_file = __pyx_v_precompute_file;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":361
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":373
  *         self.max_rank = {}
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank             # <<<<<<<<<<<<<<
@@ -39555,7 +39709,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->precompute_rank = __pyx_v_precompute_rank;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":362
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
  *         self.precompute_file = precompute_file
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank             # <<<<<<<<<<<<<<
@@ -39564,7 +39718,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->precompute_secondary_rank = __pyx_v_precompute_secondary_rank;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":363
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":375
  *         self.precompute_rank = precompute_rank
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates             # <<<<<<<<<<<<<<
@@ -39573,7 +39727,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->use_baeza_yates = __pyx_v_use_baeza_yates;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":364
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":376
  *         self.precompute_secondary_rank = precompute_secondary_rank
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor             # <<<<<<<<<<<<<<
@@ -39582,7 +39736,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->by_slack_factor = __pyx_v_by_slack_factor;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":365
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":377
  *         self.use_baeza_yates = use_baeza_yates
  *         self.by_slack_factor = by_slack_factor
  *         self.tight_phrases = tight_phrases             # <<<<<<<<<<<<<<
@@ -39591,7 +39745,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   __pyx_v_self->tight_phrases = __pyx_v_tight_phrases;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":367
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":379
  *         self.tight_phrases = tight_phrases
  * 
  *         if require_aligned_chunks:             # <<<<<<<<<<<<<<
@@ -39600,7 +39754,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   if (__pyx_v_require_aligned_chunks) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":369
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":381
  *         if require_aligned_chunks:
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39612,7 +39766,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
     goto __pyx_L7;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":370
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":382
  *             # one condition is a stronger version of the other.
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -39621,7 +39775,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
   if (__pyx_v_require_aligned_terminal) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":371
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":383
  *             self.require_aligned_chunks = self.require_aligned_terminal = True
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False             # <<<<<<<<<<<<<<
@@ -39630,7 +39784,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
  */
     __pyx_v_self->require_aligned_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":372
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":384
  *         elif require_aligned_terminal:
  *             self.require_aligned_chunks = False
  *             self.require_aligned_terminal = True             # <<<<<<<<<<<<<<
@@ -39642,7 +39796,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":374
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":386
  *             self.require_aligned_terminal = True
  *         else:
  *             self.require_aligned_chunks = self.require_aligned_terminal = False             # <<<<<<<<<<<<<<
@@ -39654,7 +39808,7 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":377
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":389
  * 
  *         # diagnostics
  *         self.prev_norm_prefix = ()             # <<<<<<<<<<<<<<
@@ -39667,17 +39821,17 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __Pyx_DECREF(__pyx_v_self->prev_norm_prefix);
   __pyx_v_self->prev_norm_prefix = ((PyObject *)__pyx_empty_tuple);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":379
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":391
  *         self.prev_norm_prefix = ()
  * 
  *         self.findexes = IntList(initial_len=10)             # <<<<<<<<<<<<<<
  *         self.findexes1 = IntList(initial_len=10)
  * 
  */
-  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 379; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_int_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 391; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
   __Pyx_GIVEREF(__pyx_t_1);
@@ -39686,17 +39840,17 @@ static int __pyx_pf_3_sa_23HieroCachingRuleFactory___cinit__(struct __pyx_obj_3_
   __pyx_v_self->findexes = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":380
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":401
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":402
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":403
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":406
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":407
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":413
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":414
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":432
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":415
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":433
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":416
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":434
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":417
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":435
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@@ -40213,7 +40400,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap(CYTHON_UNUSED
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":418
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":436
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":421
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
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  * 
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":423
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
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  *         result = ()             # <<<<<<<<<<<<<<
@@ -40288,7 +40475,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":424
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
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  *         arity = 0             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":425
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
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  *         arity = 0
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":426
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":427
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":428
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":430
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":431
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":432
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
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@@ -40427,12 +40614,12 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_4pattern2phrase(struct
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+  __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 450; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":434
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  *         return Phrase(result)
  * 
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":437
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":438
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
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  *         patterns = []
  *         result = ()             # <<<<<<<<<<<<<<
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":439
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
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  *         result = ()
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":440
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  *         arity = 0
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":441
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":459
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":442
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+      __pyx_t_4 = PyNumber_Add(__pyx_v_arity, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 460; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":443
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+      __pyx_t_6 = __Pyx_PyInt_AsInt(__pyx_v_arity); if (unlikely((__pyx_t_6 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 461; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":445
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":446
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":447
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":450
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":456
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":457
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":458
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":460
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":461
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+      __pyx_t_3 = PyInt_FromLong(__pyx_v_self->max_nonterminals); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 479; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":462
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":463
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+      __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__warn); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_3 = PyInt_FromLong(__pyx_v_pre->max_length); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = PyInt_FromLong(__pyx_v_self->max_length); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyTuple_New(3); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -40946,7 +41133,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-      __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 463; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_Call(__pyx_t_5, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 481; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -40955,7 +41142,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":464
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":482
  *             if pre.max_length != self.max_length:
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@@ -40965,18 +41152,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":465
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":483
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  *             if pre.train_max_initial_size != self.train_max_initial_size:
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-      __pyx_t_4 = PyInt_FromLong(__pyx_v_pre->train_max_initial_size); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyInt_FromLong(__pyx_v_pre->train_max_initial_size); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyInt_FromLong(__pyx_v_self->train_max_initial_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -40984,25 +41171,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __pyx_t_5 = PyTuple_New(1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_5), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 465; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 483; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":466
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
  *             if pre.train_max_initial_size != self.train_max_initial_size:
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":467
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
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+      __pyx_t_2 = PyInt_FromLong(__pyx_v_pre->train_min_gap_size); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyInt_FromLong(__pyx_v_self->train_min_gap_size); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = PyTuple_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_GIVEREF(__pyx_t_2);
@@ -41031,25 +41218,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __pyx_t_5 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_112), ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 467; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 485; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":468
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":486
  *             if pre.train_min_gap_size != self.train_min_gap_size:
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))
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@@ -41058,25 +41245,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":469
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":487
  *                 raise Exception("Precomputation done with min gap size %d, decoder uses %d" % (pre.train_min_gap_size, self.train_min_gap_size))
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+      __pyx_t_4 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_6); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41084,13 +41271,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+      __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 487; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":470
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":488
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_index, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_7), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41110,7 +41297,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41120,21 +41307,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_arr = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":471
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":489
  *                 logger.info("Converting %d hash keys on precomputed inverted index... ", len(pre.precomputed_index))
  *                 for pattern, arr in pre.precomputed_index.iteritems():
  *                     phrases = self.pattern2phrase_plus(pattern)             # <<<<<<<<<<<<<<
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr
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-        __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase_plus); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase_plus); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_pattern);
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-        __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 471; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 489; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41142,7 +41329,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_phrases = __pyx_t_3;
         __pyx_t_3 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":472
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
  *                 for pattern, arr in pre.precomputed_index.iteritems():
  *                     phrases = self.pattern2phrase_plus(pattern)
  *                     for phrase in phrases:             # <<<<<<<<<<<<<<
@@ -41153,7 +41340,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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           __pyx_t_11 = NULL;
         } else {
-          __pyx_t_10 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_phrases); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = -1; __pyx_t_3 = PyObject_GetIter(__pyx_v_phrases); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __pyx_t_11 = Py_TYPE(__pyx_t_3)->tp_iternext;
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@@ -41161,23 +41348,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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             if (__pyx_t_10 >= PyList_GET_SIZE(__pyx_t_3)) break;
             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyList_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             #if CYTHON_COMPILING_IN_CPYTHON
-            __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyTuple_GET_ITEM(__pyx_t_3, __pyx_t_10); __Pyx_INCREF(__pyx_t_2); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PySequence_ITEM(__pyx_t_3, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 472; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 490; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               break;
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@@ -41187,14 +41374,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
           __pyx_v_phrase = __pyx_t_2;
           __pyx_t_2 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":473
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":491
  *                     phrases = self.pattern2phrase_plus(pattern)
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr             # <<<<<<<<<<<<<<
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  */
-          if (PyObject_SetItem(__pyx_v_self->precomputed_index, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 473; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyObject_SetItem(__pyx_v_self->precomputed_index, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 491; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
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@@ -41203,7 +41390,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
     }
     __pyx_L8:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":474
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":492
  *                     for phrase in phrases:
  *                         self.precomputed_index[phrase] = arr
  *             if self.use_collocations:             # <<<<<<<<<<<<<<
@@ -41212,25 +41399,25 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
  */
     if (__pyx_v_self->use_collocations) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":475
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":493
  *                         self.precomputed_index[phrase] = arr
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))             # <<<<<<<<<<<<<<
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)
  */
-      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_GetName(__pyx_m, __pyx_n_s__logger); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
-      __pyx_t_3 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_GetAttr(__pyx_t_5, __pyx_n_s__info); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
       __pyx_t_5 = __pyx_v_pre->precomputed_collocations;
       __Pyx_INCREF(__pyx_t_5);
-      __pyx_t_7 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_7 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyInt_FromSsize_t(__pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41238,13 +41425,13 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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       __Pyx_GIVEREF(__pyx_t_5);
       __pyx_t_5 = 0;
-      __pyx_t_5 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 475; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 493; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":476
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":494
  *             if self.use_collocations:
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():             # <<<<<<<<<<<<<<
@@ -41254,9 +41441,9 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_collocations, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_6), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 476; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_dict_iterator(__pyx_v_pre->precomputed_collocations, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_6), (&__pyx_t_8)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_XDECREF(__pyx_t_5);
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@@ -41264,7 +41451,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
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+        if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 494; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -41274,21 +41461,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_arr = __pyx_t_3;
         __pyx_t_3 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":477
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":495
  *                 logger.info("Converting %d hash keys on precomputed collocations... ", len(pre.precomputed_collocations))
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)             # <<<<<<<<<<<<<<
  *                     self.precomputed_collocations[phrase] = arr
  *             stop_time = monitor_cpu()
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+        __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__pattern2phrase); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_3);
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 477; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(__pyx_v_pattern);
         PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_v_pattern);
         __Pyx_GIVEREF(__pyx_v_pattern);
-        __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 477; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 495; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
@@ -41296,47 +41483,47 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_8precompute(struct __py
         __pyx_v_phrase = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":478
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":496
  *                 for pattern, arr in pre.precomputed_collocations.iteritems():
  *                     phrase = self.pattern2phrase(pattern)
  *                     self.precomputed_collocations[phrase] = arr             # <<<<<<<<<<<<<<
  *             stop_time = monitor_cpu()
  *             logger.info("Processing precomputations took %f seconds", stop_time - start_time)
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-        if (PyObject_SetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 478; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (PyObject_SetItem(__pyx_v_self->precomputed_collocations, __pyx_v_phrase, __pyx_v_arr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 496; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":479
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":480
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":483
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":501
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":484
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":485
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":503
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":486
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+    __pyx_t_4 = PyNumber_Add(__pyx_t_5, __pyx_int_1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 504; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 504; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 504; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":487
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":505
  *             arr = self.precomputed_collocations[phrase]
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@@ -41494,7 +41681,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_10get_precomputed_collo
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":490
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":508
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":503
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":521
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":505
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":523
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":506
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":507
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":525
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":511
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":529
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":512
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":530
  *         # Case 1: one of the sets is empty
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@@ -41609,7 +41796,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":515
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":533
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":516
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
  *         # Case 2: sets are non-overlapping
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":517
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":535
  *         assign_matching(&loc1, arr1, high1-step1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, low2, step2, self.fda.sent_id.arr)
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":518
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":536
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":520
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  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41659,7 +41846,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_low1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":521
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":539
  * 
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41668,7 +41855,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, (__pyx_v_high2 - __pyx_v_step2), __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":522
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
  *         assign_matching(&loc1, arr1, low1, step1, self.fda.sent_id.arr)
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:             # <<<<<<<<<<<<<<
@@ -41678,7 +41865,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) == 1);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":523
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":541
  *         assign_matching(&loc2, arr2, high2-step2, step2, self.fda.sent_id.arr)
  *         if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:
  *             return result             # <<<<<<<<<<<<<<
@@ -41691,7 +41878,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":527
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":545
  *         # Case 3: query set and data set do not meet size mismatch constraints;
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1             # <<<<<<<<<<<<<<
@@ -41701,15 +41888,15 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_4 = (__pyx_v_high1 - __pyx_v_low1);
   if (unlikely(__pyx_v_step1 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 545; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step1 == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_4))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 527; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 545; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_v_qsetsize = __Pyx_div_int(__pyx_t_4, __pyx_v_step1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":528
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":546
  *         # We use mergesort instead in this case
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2             # <<<<<<<<<<<<<<
@@ -41719,15 +41906,15 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_4 = (__pyx_v_high2 - __pyx_v_low2);
   if (unlikely(__pyx_v_step2 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "integer division or modulo by zero");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 546; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   else if (sizeof(int) == sizeof(long) && unlikely(__pyx_v_step2 == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(__pyx_t_4))) {
     PyErr_Format(PyExc_OverflowError, "value too large to perform division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 528; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 546; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_v_dsetsize = __Pyx_div_int(__pyx_t_4, __pyx_v_step2);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":529
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
  *         qsetsize = (high1-low1) / step1
  *         dsetsize = (high2-low2) / step2
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41736,7 +41923,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   if (__pyx_v_d_first) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":530
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":548
  *         dsetsize = (high2-low2) / step2
  *         if d_first:
  *             tmp = qsetsize             # <<<<<<<<<<<<<<
@@ -41745,7 +41932,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_tmp = __pyx_v_qsetsize;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":531
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":549
  *         if d_first:
  *             tmp = qsetsize
  *             qsetsize = dsetsize             # <<<<<<<<<<<<<<
@@ -41754,7 +41941,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_qsetsize = __pyx_v_dsetsize;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":532
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":550
  *             tmp = qsetsize
  *             qsetsize = dsetsize
  *             dsetsize = tmp             # <<<<<<<<<<<<<<
@@ -41766,7 +41953,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L7:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":534
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
  *             dsetsize = tmp
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:             # <<<<<<<<<<<<<<
@@ -41777,12 +41964,12 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_6 = log(2.0);
   if (unlikely(__pyx_t_6 == 0)) {
     PyErr_Format(PyExc_ZeroDivisionError, "float division");
-    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 534; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 552; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
   __pyx_t_3 = ((__pyx_t_5 / __pyx_t_6) > __pyx_v_dsetsize);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":535
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
  * 
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:
  *             free(result)             # <<<<<<<<<<<<<<
@@ -41791,7 +41978,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     free(__pyx_v_result);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":536
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":554
  *         if self.by_slack_factor * qsetsize * log(dsetsize) / log(2) > dsetsize:
  *             free(result)
  *             return self.merge_helper(low1, high1, arr1, step1, low2, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, result_len)             # <<<<<<<<<<<<<<
@@ -41804,7 +41991,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L8:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":540
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":558
  *         # binary search.    There are two flavors, depending on
  *         # whether the queryset or dataset is first
  *         if d_first:             # <<<<<<<<<<<<<<
@@ -41813,7 +42000,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   if (__pyx_v_d_first) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":541
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":559
  *         # whether the queryset or dataset is first
  *         if d_first:
  *             med2 = median(low2, high2, step2)             # <<<<<<<<<<<<<<
@@ -41822,7 +42009,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2 = __pyx_f_3_sa_median(__pyx_v_low2, __pyx_v_high2, __pyx_v_step2);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":542
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":560
  *         if d_first:
  *             med2 = median(low2, high2, step2)
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -41831,7 +42018,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_med2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":544
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":562
  *             assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  * 
  *             search_low = low1             # <<<<<<<<<<<<<<
@@ -41840,7 +42027,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_low = __pyx_v_low1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":545
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":563
  * 
  *             search_low = low1
  *             search_high = high1             # <<<<<<<<<<<<<<
@@ -41849,7 +42036,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_high = __pyx_v_high1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":546
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":564
  *             search_low = low1
  *             search_high = high1
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41860,7 +42047,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_search_low < __pyx_v_search_high);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":547
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":565
  *             search_high = high1
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)             # <<<<<<<<<<<<<<
@@ -41869,7 +42056,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1 = __pyx_f_3_sa_median(__pyx_v_search_low, __pyx_v_search_high, __pyx_v_step1);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":548
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":566
  *             while search_low < search_high:
  *                 med1 = median(search_low, search_high, step1)
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41878,7 +42065,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_find_comparable_matchings(__pyx_v_low1, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med1, (&__pyx_v_med1_minus), (&__pyx_v_med1_plus));
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":549
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
  *                 med1 = median(search_low, search_high, step1)
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -41887,7 +42074,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings_set(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":570
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41896,7 +42083,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       switch (__pyx_v_comparison) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":550
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
  *                 find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -41905,7 +42092,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":551
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":569
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_low = med1_plus             # <<<<<<<<<<<<<<
@@ -41915,7 +42102,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_v_search_low = __pyx_v_med1_plus;
         break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":552
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":570
  *                 if comparison == -1:
  *                     search_low = med1_plus
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -41924,7 +42111,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":553
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
  *                     search_low = med1_plus
  *                 elif comparison == 1:
  *                     search_high = med1_minus             # <<<<<<<<<<<<<<
@@ -41935,7 +42122,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":555
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
  *                     search_high = med1_minus
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -41951,7 +42138,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":557
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":575
  *                     break
  *         else:
  *             med1 = median(low1, high1, step1)             # <<<<<<<<<<<<<<
@@ -41960,7 +42147,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med1 = __pyx_f_3_sa_median(__pyx_v_low1, __pyx_v_high1, __pyx_v_step1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":558
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":576
  *         else:
  *             med1 = median(low1, high1, step1)
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)             # <<<<<<<<<<<<<<
@@ -41969,7 +42156,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_f_3_sa_find_comparable_matchings(__pyx_v_low1, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med1, (&__pyx_v_med1_minus), (&__pyx_v_med1_plus));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":560
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":578
  *             find_comparable_matchings(low1, high1, arr1, step1, med1, &med1_minus, &med1_plus)
  * 
  *             search_low = low2             # <<<<<<<<<<<<<<
@@ -41978,7 +42165,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_low = __pyx_v_low2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":561
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":579
  * 
  *             search_low = low2
  *             search_high = high2             # <<<<<<<<<<<<<<
@@ -41987,7 +42174,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_search_high = __pyx_v_high2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":562
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":580
  *             search_low = low2
  *             search_high = high2
  *             while search_low < search_high:             # <<<<<<<<<<<<<<
@@ -41998,7 +42185,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_search_low < __pyx_v_search_high);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":563
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":581
  *             search_high = high2
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)             # <<<<<<<<<<<<<<
@@ -42007,7 +42194,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med2 = __pyx_f_3_sa_median(__pyx_v_search_low, __pyx_v_search_high, __pyx_v_step2);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":564
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":582
  *             while search_low < search_high:
  *                 med2 = median(search_low, search_high, step2)
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42016,7 +42203,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_med2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":565
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":583
  *                 med2 = median(search_low, search_high, step2)
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -42025,7 +42212,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings_set(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -42034,7 +42221,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       switch (__pyx_v_comparison) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":566
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":584
  *                 assign_matching(&loc2, arr2, med2, step2, self.fda.sent_id.arr)
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42043,7 +42230,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case -1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":567
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":585
  *                 comparison = self.compare_matchings_set(med1_minus, med1_plus, arr1, step1, &loc2, offset_by_one, len_last)
  *                 if comparison == -1:
  *                     search_high = med2             # <<<<<<<<<<<<<<
@@ -42053,7 +42240,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_v_search_high = __pyx_v_med2;
         break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":568
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
  *                 if comparison == -1:
  *                     search_high = med2
  *                 elif comparison == 1:             # <<<<<<<<<<<<<<
@@ -42062,7 +42249,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         case 1:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":569
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":587
  *                     search_high = med2
  *                 elif comparison == 1:
  *                     search_low = med2 + step2             # <<<<<<<<<<<<<<
@@ -42073,7 +42260,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         break;
         default:
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":571
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":589
  *                     search_low = med2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -42088,7 +42275,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L9:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":573
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
  *                     break
  * 
  *         med_result_len = 0             # <<<<<<<<<<<<<<
@@ -42097,7 +42284,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_med_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":574
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
  * 
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))             # <<<<<<<<<<<<<<
@@ -42106,7 +42293,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_med_result = ((int *)malloc((0 * (sizeof(int *)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":575
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":593
  *         med_result_len = 0
  *         med_result = <int*> malloc(0*sizeof(int*))
  *         if search_high > search_low:             # <<<<<<<<<<<<<<
@@ -42116,7 +42303,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   __pyx_t_3 = (__pyx_v_search_high > __pyx_v_search_low);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":581
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
  *             # want to store the bindings for all of those elements.    We can
  *             # subsequently throw all of them away.
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -42125,7 +42312,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_minus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":582
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":600
  *             # subsequently throw all of them away.
  *             med2_minus = med2
  *             med2_plus = med2 + step2             # <<<<<<<<<<<<<<
@@ -42134,7 +42321,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_plus = (__pyx_v_med2 + __pyx_v_step2);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":583
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
  *             med2_minus = med2
  *             med2_plus = med2 + step2
  *             i1 = med1_minus             # <<<<<<<<<<<<<<
@@ -42143,7 +42330,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_i1 = __pyx_v_med1_minus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":584
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
  *             med2_plus = med2 + step2
  *             i1 = med1_minus
  *             while i1 < med1_plus:             # <<<<<<<<<<<<<<
@@ -42154,7 +42341,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_i1 < __pyx_v_med1_plus);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":585
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":603
  *             i1 = med1_minus
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42163,7 +42350,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":586
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
  *             while i1 < med1_plus:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 while med2_minus-step2 >= low2:             # <<<<<<<<<<<<<<
@@ -42174,7 +42361,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = ((__pyx_v_med2_minus - __pyx_v_step2) >= __pyx_v_low2);
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":587
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":605
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 while med2_minus-step2 >= low2:
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42183,7 +42370,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, (__pyx_v_med2_minus - __pyx_v_step2), __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":588
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":606
  *                 while med2_minus-step2 >= low2:
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)
  *                     if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) < 1:             # <<<<<<<<<<<<<<
@@ -42193,7 +42380,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) < 1);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":589
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":607
  *                     assign_matching(&loc2, arr2, med2_minus-step2, step2, self.fda.sent_id.arr)
  *                     if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) < 1:
  *                         med2_minus = med2_minus - step2             # <<<<<<<<<<<<<<
@@ -42205,7 +42392,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":591
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":609
  *                         med2_minus = med2_minus - step2
  *                     else:
  *                         break             # <<<<<<<<<<<<<<
@@ -42218,7 +42405,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L18_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":592
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":610
  *                     else:
  *                         break
  *                 i2 = med2_minus             # <<<<<<<<<<<<<<
@@ -42227,7 +42414,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_i2 = __pyx_v_med2_minus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":593
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
  *                         break
  *                 i2 = med2_minus
  *                 while i2 < high2:             # <<<<<<<<<<<<<<
@@ -42238,7 +42425,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_i2 < __pyx_v_high2);
         if (!__pyx_t_3) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":594
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":612
  *                 i2 = med2_minus
  *                 while i2 < high2:
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42247,7 +42434,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_i2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":595
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":613
  *                 while i2 < high2:
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -42256,7 +42443,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":596
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":614
  *                     assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:             # <<<<<<<<<<<<<<
@@ -42266,7 +42453,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_comparison == 0);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":598
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":616
  *                     if comparison == 0:
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)             # <<<<<<<<<<<<<<
@@ -42278,7 +42465,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":599
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":617
  *                         pass
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42288,7 +42475,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         __pyx_t_3 = (__pyx_v_comparison == -1);
         if (__pyx_t_3) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":600
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":618
  *                         med_result = append_combined_matching(med_result, &loc1, &loc2, offset_by_one, num_subpatterns, &med_result_len)
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -42300,7 +42487,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
         }
         __pyx_L23:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":601
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":619
  *                     if comparison == -1:
  *                         break
  *                     i2 = i2 + step2             # <<<<<<<<<<<<<<
@@ -42311,7 +42498,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L21_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":602
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":620
  *                         break
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:             # <<<<<<<<<<<<<<
@@ -42321,7 +42508,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_i2 > __pyx_v_med2_plus);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":603
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":621
  *                     i2 = i2 + step2
  *                 if i2 > med2_plus:
  *                     med2_plus = i2             # <<<<<<<<<<<<<<
@@ -42333,7 +42520,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L24:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":604
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":622
  *                 if i2 > med2_plus:
  *                     med2_plus = i2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42343,7 +42530,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_v_i1 = (__pyx_v_i1 + __pyx_v_step1);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":606
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":624
  *                 i1 = i1 + step1
  * 
  *             tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -42352,7 +42539,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_tmp = __pyx_v_med1_minus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":607
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":625
  * 
  *             tmp = med1_minus
  *             med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42361,7 +42548,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med1_minus = __pyx_v_med1_plus;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":608
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":626
  *             tmp = med1_minus
  *             med1_minus = med1_plus
  *             med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -42373,7 +42560,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":611
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":629
  *         else:
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2             # <<<<<<<<<<<<<<
@@ -42382,7 +42569,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_minus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":612
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":630
  *             # No match; need to figure out the point of division in D and Q
  *             med2_minus = med2
  *             med2_plus = med2             # <<<<<<<<<<<<<<
@@ -42391,7 +42578,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     __pyx_v_med2_plus = __pyx_v_med2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":613
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":631
  *             med2_minus = med2
  *             med2_plus = med2
  *             if d_first:             # <<<<<<<<<<<<<<
@@ -42400,7 +42587,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
     if (__pyx_v_d_first) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":614
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":632
  *             med2_plus = med2
  *             if d_first:
  *                 med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -42409,7 +42596,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med2_minus = (__pyx_v_med2_minus + __pyx_v_step2);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":615
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":633
  *             if d_first:
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:             # <<<<<<<<<<<<<<
@@ -42419,7 +42606,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == -1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":616
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":634
  *                 med2_minus = med2_minus + step2
  *                 if comparison == -1:
  *                     med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42431,7 +42618,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       }
       __pyx_L26:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":617
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":635
  *                 if comparison == -1:
  *                     med1_minus = med1_plus
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -42441,7 +42628,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":618
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":636
  *                     med1_minus = med1_plus
  *                 if comparison == 1:
  *                     med1_plus = med1_minus             # <<<<<<<<<<<<<<
@@ -42456,7 +42643,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":620
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":638
  *                     med1_plus = med1_minus
  *             else:
  *                 tmp = med1_minus             # <<<<<<<<<<<<<<
@@ -42465,7 +42652,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_tmp = __pyx_v_med1_minus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":621
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":639
  *             else:
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus             # <<<<<<<<<<<<<<
@@ -42474,7 +42661,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1_minus = __pyx_v_med1_plus;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":622
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":640
  *                 tmp = med1_minus
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp             # <<<<<<<<<<<<<<
@@ -42483,7 +42670,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
       __pyx_v_med1_plus = __pyx_v_tmp;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":623
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":641
  *                 med1_minus = med1_plus
  *                 med1_plus = tmp
  *                 if comparison == 1:             # <<<<<<<<<<<<<<
@@ -42493,7 +42680,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
       __pyx_t_3 = (__pyx_v_comparison == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":624
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":642
  *                 med1_plus = tmp
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2             # <<<<<<<<<<<<<<
@@ -42502,7 +42689,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
         __pyx_v_med2_minus = (__pyx_v_med2_minus + __pyx_v_step2);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":625
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
  *                 if comparison == 1:
  *                     med2_minus = med2_minus + step2
  *                     med2_plus = med2_plus + step2             # <<<<<<<<<<<<<<
@@ -42518,7 +42705,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   }
   __pyx_L14:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":627
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":645
  *                     med2_plus = med2_plus + step2
  * 
  *         low_result_len = 0             # <<<<<<<<<<<<<<
@@ -42527,7 +42714,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_low_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":628
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":646
  * 
  *         low_result_len = 0
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)             # <<<<<<<<<<<<<<
@@ -42536,7 +42723,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_low_result = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->baeza_yates_helper(__pyx_v_self, __pyx_v_low1, __pyx_v_med1_plus, __pyx_v_arr1, __pyx_v_step1, __pyx_v_low2, __pyx_v_med2_plus, __pyx_v_arr2, __pyx_v_step2, __pyx_v_offset_by_one, __pyx_v_len_last, __pyx_v_num_subpatterns, (&__pyx_v_low_result_len));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":629
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":647
  *         low_result_len = 0
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)
  *         high_result_len = 0             # <<<<<<<<<<<<<<
@@ -42545,7 +42732,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_high_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":630
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":648
  *         low_result = self.baeza_yates_helper(low1, med1_plus, arr1, step1, low2, med2_plus, arr2, step2, offset_by_one, len_last, num_subpatterns, &low_result_len)
  *         high_result_len = 0
  *         high_result = self.baeza_yates_helper(med1_minus, high1, arr1, step1, med2_minus, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, &high_result_len)             # <<<<<<<<<<<<<<
@@ -42554,7 +42741,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_high_result = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->baeza_yates_helper(__pyx_v_self, __pyx_v_med1_minus, __pyx_v_high1, __pyx_v_arr1, __pyx_v_step1, __pyx_v_med2_minus, __pyx_v_high2, __pyx_v_arr2, __pyx_v_step2, __pyx_v_offset_by_one, __pyx_v_len_last, __pyx_v_num_subpatterns, (&__pyx_v_high_result_len));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":632
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":650
  *         high_result = self.baeza_yates_helper(med1_minus, high1, arr1, step1, med2_minus, high2, arr2, step2, offset_by_one, len_last, num_subpatterns, &high_result_len)
  * 
  *         result = extend_arr(result, result_len, low_result, low_result_len)             # <<<<<<<<<<<<<<
@@ -42563,7 +42750,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_low_result, __pyx_v_low_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":633
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":651
  * 
  *         result = extend_arr(result, result_len, low_result, low_result_len)
  *         result = extend_arr(result, result_len, med_result, med_result_len)             # <<<<<<<<<<<<<<
@@ -42572,7 +42759,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_med_result, __pyx_v_med_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":634
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":652
  *         result = extend_arr(result, result_len, low_result, low_result_len)
  *         result = extend_arr(result, result_len, med_result, med_result_len)
  *         result = extend_arr(result, result_len, high_result, high_result_len)             # <<<<<<<<<<<<<<
@@ -42581,7 +42768,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   __pyx_v_result = __pyx_f_3_sa_extend_arr(__pyx_v_result, __pyx_v_result_len, __pyx_v_high_result, __pyx_v_high_result_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":635
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":653
  *         result = extend_arr(result, result_len, med_result, med_result_len)
  *         result = extend_arr(result, result_len, high_result, high_result_len)
  *         free(low_result)             # <<<<<<<<<<<<<<
@@ -42590,7 +42777,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_low_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":636
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":654
  *         result = extend_arr(result, result_len, high_result, high_result_len)
  *         free(low_result)
  *         free(med_result)             # <<<<<<<<<<<<<<
@@ -42599,7 +42786,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_med_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":637
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":655
  *         free(low_result)
  *         free(med_result)
  *         free(high_result)             # <<<<<<<<<<<<<<
@@ -42608,7 +42795,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
  */
   free(__pyx_v_high_result);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":639
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":657
  *         free(high_result)
  * 
  *         return result             # <<<<<<<<<<<<<<
@@ -42628,7 +42815,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_baeza_yates_helper(struct __p
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":643
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":661
  * 
  * 
  *     cdef long compare_matchings_set(self, int i1_minus, int i1_plus, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -42647,7 +42834,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   int __pyx_t_1;
   __Pyx_RefNannySetupContext("compare_matchings_set", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":654
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":672
  *         cdef Matching* loc1
  * 
  *         loc1 = &l1_stack             # <<<<<<<<<<<<<<
@@ -42656,7 +42843,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
   __pyx_v_loc1 = (&__pyx_v_l1_stack);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":656
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":674
  *         loc1 = &l1_stack
  * 
  *         i1 = i1_minus             # <<<<<<<<<<<<<<
@@ -42665,7 +42852,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
   __pyx_v_i1 = __pyx_v_i1_minus;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":657
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":675
  * 
  *         i1 = i1_minus
  *         while i1 < i1_plus:             # <<<<<<<<<<<<<<
@@ -42676,7 +42863,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_i1 < __pyx_v_i1_plus);
     if (!__pyx_t_1) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":658
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":676
  *         i1 = i1_minus
  *         while i1 < i1_plus:
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -42685,7 +42872,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
     __pyx_f_3_sa_assign_matching(__pyx_v_loc1, __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":659
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":677
  *         while i1 < i1_plus:
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -42694,7 +42881,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
     __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, __pyx_v_loc1, __pyx_v_loc2, __pyx_v_offset_by_one, __pyx_v_len_last);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":660
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
  *             assign_matching(loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)
  *             if comparison == 0:             # <<<<<<<<<<<<<<
@@ -42704,7 +42891,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_comparison == 0);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":661
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":679
  *             comparison = self.compare_matchings(loc1, loc2, offset_by_one, len_last)
  *             if comparison == 0:
  *                 prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42713,7 +42900,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
       __pyx_v_prev_comparison = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":662
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":680
  *             if comparison == 0:
  *                 prev_comparison = 0
  *                 break             # <<<<<<<<<<<<<<
@@ -42724,7 +42911,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
       goto __pyx_L5;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":663
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
  *                 prev_comparison = 0
  *                 break
  *             elif i1 == i1_minus:             # <<<<<<<<<<<<<<
@@ -42734,7 +42921,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     __pyx_t_1 = (__pyx_v_i1 == __pyx_v_i1_minus);
     if (__pyx_t_1) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":664
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":682
  *                 break
  *             elif i1 == i1_minus:
  *                 prev_comparison = comparison             # <<<<<<<<<<<<<<
@@ -42746,7 +42933,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":666
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":684
  *                 prev_comparison = comparison
  *             else:
  *                 if comparison != prev_comparison:             # <<<<<<<<<<<<<<
@@ -42756,7 +42943,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
       __pyx_t_1 = (__pyx_v_comparison != __pyx_v_prev_comparison);
       if (__pyx_t_1) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":667
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
  *             else:
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0             # <<<<<<<<<<<<<<
@@ -42765,7 +42952,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
  */
         __pyx_v_prev_comparison = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":668
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":686
  *                 if comparison != prev_comparison:
  *                     prev_comparison = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -42779,7 +42966,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
     }
     __pyx_L5:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":669
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":687
  *                     prev_comparison = 0
  *                     break
  *             i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -42790,7 +42977,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   }
   __pyx_L4_break:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":670
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":688
  *                     break
  *             i1 = i1 + step1
  *         return prev_comparison             # <<<<<<<<<<<<<<
@@ -42806,7 +42993,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings_set(struct
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":673
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":691
  * 
  * 
  *     cdef long compare_matchings(self, Matching* loc1, Matching* loc2, int offset_by_one, int len_last):             # <<<<<<<<<<<<<<
@@ -42824,7 +43011,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("compare_matchings", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":676
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":694
  *         cdef int i
  * 
  *         if loc1.sent_id > loc2.sent_id:             # <<<<<<<<<<<<<<
@@ -42834,7 +43021,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_1 = (__pyx_v_loc1->sent_id > __pyx_v_loc2->sent_id);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":677
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":695
  * 
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1             # <<<<<<<<<<<<<<
@@ -42847,7 +43034,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":678
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":696
  *         if loc1.sent_id > loc2.sent_id:
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:             # <<<<<<<<<<<<<<
@@ -42857,7 +43044,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_1 = (__pyx_v_loc2->sent_id > __pyx_v_loc1->sent_id);
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":679
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":697
  *             return 1
  *         if loc2.sent_id > loc1.sent_id:
  *             return -1             # <<<<<<<<<<<<<<
@@ -42870,7 +43057,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":681
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":699
  *             return -1
  * 
  *         if loc1.size == 1 and loc2.size == 1:             # <<<<<<<<<<<<<<
@@ -42886,7 +43073,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":682
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":700
  * 
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:             # <<<<<<<<<<<<<<
@@ -42896,7 +43083,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc2->arr[__pyx_v_loc2->start]) - (__pyx_v_loc1->arr[__pyx_v_loc1->start])) <= __pyx_v_self->train_min_gap_size);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":683
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
  *         if loc1.size == 1 and loc2.size == 1:
  *             if loc2.arr[loc2.start] - loc1.arr[loc1.start] <= self.train_min_gap_size:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -42911,7 +43098,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     goto __pyx_L5;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":685
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":703
  *                 return 1
  * 
  *         elif offset_by_one:             # <<<<<<<<<<<<<<
@@ -42920,7 +43107,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
  */
   if (__pyx_v_offset_by_one) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":686
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
  * 
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -42930,7 +43117,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_4 = __pyx_v_loc1->size;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":687
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":705
  *         elif offset_by_one:
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:             # <<<<<<<<<<<<<<
@@ -42940,7 +43127,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) > (__pyx_v_loc2->arr[((__pyx_v_loc2->start + __pyx_v_i) - 1)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":688
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -42953,7 +43140,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L9:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":689
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":707
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i-1]:
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i-1]:             # <<<<<<<<<<<<<<
@@ -42963,7 +43150,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) < (__pyx_v_loc2->arr[((__pyx_v_loc2->start + __pyx_v_i) - 1)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":690
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":708
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i-1]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -42980,7 +43167,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":693
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":711
  * 
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -42990,7 +43177,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc1->arr[__pyx_v_loc1->start]) + 1) > (__pyx_v_loc2->arr[__pyx_v_loc2->start]));
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":694
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":712
  *         else:
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -43003,7 +43190,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L11:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":695
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":713
  *             if loc1.arr[loc1.start]+1 > loc2.arr[loc2.start]:
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:             # <<<<<<<<<<<<<<
@@ -43013,7 +43200,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_3 = (((__pyx_v_loc1->arr[__pyx_v_loc1->start]) + 1) < (__pyx_v_loc2->arr[__pyx_v_loc2->start]));
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":696
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":714
  *                 return 1
  *             if loc1.arr[loc1.start]+1 < loc2.arr[loc2.start]:
  *                 return -1             # <<<<<<<<<<<<<<
@@ -43026,7 +43213,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":698
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":716
  *                 return -1
  * 
  *             for i from 1 <= i < loc1.size:             # <<<<<<<<<<<<<<
@@ -43036,7 +43223,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
     __pyx_t_4 = __pyx_v_loc1->size;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":699
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":717
  * 
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -43046,7 +43233,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) > (__pyx_v_loc2->arr[(__pyx_v_loc2->start + __pyx_v_i)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":700
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":718
  *             for i from 1 <= i < loc1.size:
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1             # <<<<<<<<<<<<<<
@@ -43059,7 +43246,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       }
       __pyx_L15:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":701
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":719
  *                 if loc1.arr[loc1.start+i] > loc2.arr[loc2.start+i]:
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:             # <<<<<<<<<<<<<<
@@ -43069,7 +43256,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
       __pyx_t_3 = ((__pyx_v_loc1->arr[(__pyx_v_loc1->start + __pyx_v_i)]) < (__pyx_v_loc2->arr[(__pyx_v_loc2->start + __pyx_v_i)]));
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":702
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":720
  *                     return 1
  *                 if loc1.arr[loc1.start+i] < loc2.arr[loc2.start+i]:
  *                     return -1             # <<<<<<<<<<<<<<
@@ -43085,7 +43272,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L5:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":704
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":722
  *                     return -1
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -43095,7 +43282,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   __pyx_t_3 = ((((__pyx_v_loc2->arr[(__pyx_v_loc2->end - 1)]) + __pyx_v_len_last) - (__pyx_v_loc1->arr[__pyx_v_loc1->start])) > __pyx_v_self->train_max_initial_size);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":705
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":723
  * 
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1             # <<<<<<<<<<<<<<
@@ -43108,7 +43295,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   }
   __pyx_L17:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":706
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":724
  *         if loc2.arr[loc2.end-1] + len_last - loc1.arr[loc1.start] > self.train_max_initial_size:
  *             return -1
  *         return 0             # <<<<<<<<<<<<<<
@@ -43124,7 +43311,7 @@ static long __pyx_f_3_sa_23HieroCachingRuleFactory_compare_matchings(struct __py
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":709
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":727
  * 
  * 
  *     cdef int* merge_helper(self, int low1, int high1, int* arr1, int step1,             # <<<<<<<<<<<<<<
@@ -43148,7 +43335,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
   int __pyx_t_3;
   __Pyx_RefNannySetupContext("merge_helper", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":717
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":735
  *         cdef Matching loc1, loc2
  * 
  *         result_len[0] = 0             # <<<<<<<<<<<<<<
@@ -43157,7 +43344,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   (__pyx_v_result_len[0]) = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":718
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":736
  * 
  *         result_len[0] = 0
  *         result = <int*> malloc(0*sizeof(int))             # <<<<<<<<<<<<<<
@@ -43166,7 +43353,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_result = ((int *)malloc((0 * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":720
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":738
  *         result = <int*> malloc(0*sizeof(int))
  * 
  *         i1 = low1             # <<<<<<<<<<<<<<
@@ -43175,7 +43362,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_i1 = __pyx_v_low1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":721
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":739
  * 
  *         i1 = low1
  *         i2 = low2             # <<<<<<<<<<<<<<
@@ -43184,7 +43371,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
   __pyx_v_i2 = __pyx_v_low2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":722
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":740
  *         i1 = low1
  *         i2 = low2
  *         while i1 < high1 and i2 < high2:             # <<<<<<<<<<<<<<
@@ -43201,7 +43388,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
     if (!__pyx_t_3) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":725
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
  * 
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43210,7 +43397,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
     __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":726
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":744
  *             # First, pop all unneeded loc2's off the stack
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             while i2 < high2:             # <<<<<<<<<<<<<<
@@ -43221,7 +43408,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       __pyx_t_3 = (__pyx_v_i2 < __pyx_v_high2);
       if (!__pyx_t_3) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":727
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
  *             assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *             while i2 < high2:
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43230,7 +43417,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_i2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":728
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":746
  *             while i2 < high2:
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                 if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:             # <<<<<<<<<<<<<<
@@ -43240,7 +43427,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       __pyx_t_3 = (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last) == 1);
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":729
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":747
  *                 assign_matching(&loc2, arr2, i2, step2, self.fda.sent_id.arr)
  *                 if self.compare_matchings(&loc1, &loc2, offset_by_one, len_last) == 1:
  *                     i2 = i2 + step2             # <<<<<<<<<<<<<<
@@ -43252,7 +43439,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":731
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
  *                     i2 = i2 + step2
  *                 else:
  *                     break             # <<<<<<<<<<<<<<
@@ -43265,7 +43452,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
     __pyx_L6_break:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":734
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":752
  * 
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1             # <<<<<<<<<<<<<<
@@ -43274,7 +43461,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
     __pyx_v_j1 = __pyx_v_i1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":735
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":753
  *             # Next: process all loc1's with the same starting val
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:             # <<<<<<<<<<<<<<
@@ -43291,7 +43478,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       if (!__pyx_t_2) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":736
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":754
  *             j1 = i1
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43300,7 +43487,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_f_3_sa_assign_matching((&__pyx_v_loc1), __pyx_v_arr1, __pyx_v_i1, __pyx_v_step1, __pyx_v_self->fda->sent_id->arr);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":737
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":755
  *             while i1 < high1 and arr1[j1] == arr1[i1]:
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2             # <<<<<<<<<<<<<<
@@ -43309,7 +43496,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
       __pyx_v_j2 = __pyx_v_i2;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":738
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":756
  *                 assign_matching(&loc1, arr1, i1, step1, self.fda.sent_id.arr)
  *                 j2 = i2
  *                 while j2 < high2:             # <<<<<<<<<<<<<<
@@ -43320,7 +43507,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_j2 < __pyx_v_high2);
         if (!__pyx_t_2) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":739
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":757
  *                 j2 = i2
  *                 while j2 < high2:
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -43329,7 +43516,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
         __pyx_f_3_sa_assign_matching((&__pyx_v_loc2), __pyx_v_arr2, __pyx_v_j2, __pyx_v_step2, __pyx_v_self->fda->sent_id->arr);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":740
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":758
  *                 while j2 < high2:
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)             # <<<<<<<<<<<<<<
@@ -43338,7 +43525,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
  */
         __pyx_v_comparison = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->compare_matchings(__pyx_v_self, (&__pyx_v_loc1), (&__pyx_v_loc2), __pyx_v_offset_by_one, __pyx_v_len_last);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":741
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
  *                     assign_matching(&loc2, arr2, j2, step2, self.fda.sent_id.arr)
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:             # <<<<<<<<<<<<<<
@@ -43348,7 +43535,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_comparison == 0);
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":742
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":760
  *                     comparison = self.compare_matchings(&loc1, &loc2, offset_by_one, len_last)
  *                     if comparison == 0:
  *                         result = append_combined_matching(result, &loc1, &loc2, offset_by_one, num_subpatterns, result_len)             # <<<<<<<<<<<<<<
@@ -43360,7 +43547,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L12:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":743
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
  *                     if comparison == 0:
  *                         result = append_combined_matching(result, &loc1, &loc2, offset_by_one, num_subpatterns, result_len)
  *                     if comparison == 1:             # <<<<<<<<<<<<<<
@@ -43373,7 +43560,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         __pyx_L13:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":745
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":763
  *                     if comparison == 1:
  *                         pass
  *                     if comparison == -1:             # <<<<<<<<<<<<<<
@@ -43383,7 +43570,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         __pyx_t_2 = (__pyx_v_comparison == -1);
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":746
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
  *                         pass
  *                     if comparison == -1:
  *                         break             # <<<<<<<<<<<<<<
@@ -43395,7 +43582,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":748
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
  *                         break
  *                     else:
  *                         j2 = j2 + step2             # <<<<<<<<<<<<<<
@@ -43408,7 +43595,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
       }
       __pyx_L11_break:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":749
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":767
  *                     else:
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1             # <<<<<<<<<<<<<<
@@ -43419,7 +43606,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":750
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
  *                         j2 = j2 + step2
  *                 i1 = i1 + step1
  *         return result             # <<<<<<<<<<<<<<
@@ -43435,7 +43622,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_merge_helper(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":753
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":771
  * 
  * 
  *     cdef void sort_phrase_loc(self, IntList arr, PhraseLocation loc, Phrase phrase):             # <<<<<<<<<<<<<<
@@ -43457,26 +43644,26 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("sort_phrase_loc", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":758
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":776
  *         cdef IntList result
  * 
  *         if phrase in self.precomputed_index:             # <<<<<<<<<<<<<<
  *             loc.arr = self.precomputed_index[phrase]
  *         else:
  */
-  __pyx_t_1 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_phrase), __pyx_v_self->precomputed_index, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 758; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_phrase), __pyx_v_self->precomputed_index, Py_EQ)); if (unlikely(__pyx_t_1 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_1) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":759
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":777
  * 
  *         if phrase in self.precomputed_index:
  *             loc.arr = self.precomputed_index[phrase]             # <<<<<<<<<<<<<<
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  */
-    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_index, ((PyObject *)__pyx_v_phrase)); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 759; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyObject_GetItem(__pyx_v_self->precomputed_index, ((PyObject *)__pyx_v_phrase)); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 759; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (!(likely(((__pyx_t_2) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_2, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GIVEREF(__pyx_t_2);
     __Pyx_GOTREF(__pyx_v_loc->arr);
     __Pyx_DECREF(((PyObject *)__pyx_v_loc->arr));
@@ -43486,20 +43673,20 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":761
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":779
  *             loc.arr = self.precomputed_index[phrase]
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)             # <<<<<<<<<<<<<<
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:
  */
-    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyDict_New(); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(((PyObject *)__pyx_t_2));
-    __pyx_t_3 = PyInt_FromLong((__pyx_v_loc->sa_high - __pyx_v_loc->sa_low)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyInt_FromLong((__pyx_v_loc->sa_high - __pyx_v_loc->sa_low)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_2, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 761; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 779; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __Pyx_GIVEREF(__pyx_t_3);
@@ -43508,27 +43695,27 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_v_loc->arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":762
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
  *         else:
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  *             veb = VEB(arr.len)             # <<<<<<<<<<<<<<
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])
  */
-    __pyx_t_3 = PyInt_FromLong(__pyx_v_arr->len); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyInt_FromLong(__pyx_v_arr->len); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
-    __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
     PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_3);
     __Pyx_GIVEREF(__pyx_t_3);
     __pyx_t_3 = 0;
-    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_VEB)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_VEB)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_3);
     __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
     __pyx_v_veb = ((struct __pyx_obj_3_sa_VEB *)__pyx_t_3);
     __pyx_t_3 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":763
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":781
  *             loc.arr = IntList(initial_len=loc.sa_high-loc.sa_low)
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:             # <<<<<<<<<<<<<<
@@ -43538,7 +43725,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_t_4 = __pyx_v_loc->sa_high;
     for (__pyx_v_i = __pyx_v_loc->sa_low; __pyx_v_i < __pyx_t_4; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":764
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
  *             veb = VEB(arr.len)
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])             # <<<<<<<<<<<<<<
@@ -43548,7 +43735,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
       ((struct __pyx_vtabstruct_3_sa_VEB *)__pyx_v_veb->__pyx_vtab)->_insert(__pyx_v_veb, (__pyx_v_arr->arr[__pyx_v_i]));
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":765
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":783
  *             for i from loc.sa_low <= i < loc.sa_high:
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val             # <<<<<<<<<<<<<<
@@ -43557,7 +43744,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
     __pyx_v_i = __pyx_v_veb->veb->min_val;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":766
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":784
  *                 veb._insert(arr.arr[i])
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:             # <<<<<<<<<<<<<<
@@ -43567,7 +43754,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
     __pyx_t_4 = (__pyx_v_loc->sa_high - __pyx_v_loc->sa_low);
     for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":767
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":785
  *             i = veb.veb.min_val
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i             # <<<<<<<<<<<<<<
@@ -43576,7 +43763,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
       (__pyx_v_loc->arr->arr[__pyx_v_j]) = __pyx_v_i;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":768
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":786
  *             for j from 0 <= j < loc.sa_high-loc.sa_low:
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)             # <<<<<<<<<<<<<<
@@ -43588,7 +43775,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":769
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
  *                 loc.arr.arr[j] = i
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0             # <<<<<<<<<<<<<<
@@ -43597,7 +43784,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
  */
   __pyx_v_loc->arr_low = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":770
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":788
  *                 i = veb._findsucc(i)
  *         loc.arr_low = 0
  *         loc.arr_high = loc.arr.len             # <<<<<<<<<<<<<<
@@ -43616,7 +43803,7 @@ static void __pyx_f_3_sa_23HieroCachingRuleFactory_sort_phrase_loc(struct __pyx_
   __Pyx_RefNannyFinishContext();
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":773
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
  * 
  * 
  *     cdef intersect_helper(self, Phrase prefix, Phrase suffix,             # <<<<<<<<<<<<<<
@@ -43653,7 +43840,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("intersect_helper", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":780
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
  *         cdef int* result_ptr
  * 
  *         result_len = 0             # <<<<<<<<<<<<<<
@@ -43662,21 +43849,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_result_len = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":782
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":800
  *         result_len = 0
  * 
  *         if sym_isvar(suffix[0]):             # <<<<<<<<<<<<<<
  *             offset_by_one = 1
  *         else:
  */
-  __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_suffix), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_suffix), 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 800; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 782; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_2 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 800; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
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   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":783
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":801
  * 
  *         if sym_isvar(suffix[0]):
  *             offset_by_one = 1             # <<<<<<<<<<<<<<
@@ -43688,7 +43875,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":785
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":803
  *             offset_by_one = 1
  *         else:
  *             offset_by_one = 0             # <<<<<<<<<<<<<<
@@ -43699,34 +43886,34 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":787
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":805
  *             offset_by_one = 0
  * 
  *         len_last = len(suffix.getchunk(suffix.arity()))             # <<<<<<<<<<<<<<
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  *         if prefix_loc.arr is None:
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-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__getchunk); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__getchunk); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_4 = PyObject_GetAttr(((PyObject *)__pyx_v_suffix), __pyx_n_s__arity); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_5 = PyObject_Call(__pyx_t_4, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyTuple_New(1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 787; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_6 = PyObject_Length(__pyx_t_5); if (unlikely(__pyx_t_6 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
   __pyx_v_len_last = __pyx_t_6;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":789
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":807
  *         len_last = len(suffix.getchunk(suffix.arity()))
  * 
  *         if prefix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43736,7 +43923,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (((PyObject *)__pyx_v_prefix_loc->arr) == Py_None);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":790
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":808
  * 
  *         if prefix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)             # <<<<<<<<<<<<<<
@@ -43751,7 +43938,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   __pyx_L4:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":791
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":809
  *         if prefix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)
  *         arr1 = prefix_loc.arr             # <<<<<<<<<<<<<<
@@ -43761,7 +43948,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __Pyx_INCREF(((PyObject *)__pyx_v_prefix_loc->arr));
   __pyx_v_arr1 = __pyx_v_prefix_loc->arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":792
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":810
  *             self.sort_phrase_loc(self.fsa.sa, prefix_loc, prefix)
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43770,7 +43957,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_low1 = __pyx_v_prefix_loc->arr_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":793
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":811
  *         arr1 = prefix_loc.arr
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43779,7 +43966,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_high1 = __pyx_v_prefix_loc->arr_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":794
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
  *         low1 = prefix_loc.arr_low
  *         high1 = prefix_loc.arr_high
  *         step1 = prefix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43788,7 +43975,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_step1 = __pyx_v_prefix_loc->num_subpatterns;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":796
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
  *         step1 = prefix_loc.num_subpatterns
  * 
  *         if suffix_loc.arr is None:             # <<<<<<<<<<<<<<
@@ -43798,7 +43985,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __pyx_t_7 = (((PyObject *)__pyx_v_suffix_loc->arr) == Py_None);
   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":797
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":815
  * 
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)             # <<<<<<<<<<<<<<
@@ -43813,7 +44000,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":798
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":816
  *         if suffix_loc.arr is None:
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr             # <<<<<<<<<<<<<<
@@ -43823,7 +44010,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   __Pyx_INCREF(((PyObject *)__pyx_v_suffix_loc->arr));
   __pyx_v_arr2 = __pyx_v_suffix_loc->arr;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":799
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":817
  *             self.sort_phrase_loc(self.fsa.sa, suffix_loc, suffix)
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low             # <<<<<<<<<<<<<<
@@ -43832,7 +44019,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_low2 = __pyx_v_suffix_loc->arr_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":800
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":818
  *         arr2 = suffix_loc.arr
  *         low2 = suffix_loc.arr_low
  *         high2 = suffix_loc.arr_high             # <<<<<<<<<<<<<<
@@ -43841,7 +44028,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_high2 = __pyx_v_suffix_loc->arr_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":801
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":819
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  *         high2 = suffix_loc.arr_high
  *         step2 = suffix_loc.num_subpatterns             # <<<<<<<<<<<<<<
@@ -43850,26 +44037,26 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
   __pyx_v_step2 = __pyx_v_suffix_loc->num_subpatterns;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":803
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":821
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  * 
  *         num_subpatterns = prefix.arity()+1             # <<<<<<<<<<<<<<
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  *         if algorithm == MERGE:
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+  __pyx_t_5 = PyNumber_Add(__pyx_t_4, __pyx_int_1); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 821; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_3 = __Pyx_PyInt_AsInt(__pyx_t_5); if (unlikely((__pyx_t_3 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 821; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":805
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":823
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  *         if algorithm == MERGE:             # <<<<<<<<<<<<<<
@@ -43879,7 +44066,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":808
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":826
  *             result_ptr = self.merge_helper(low1, high1, arr1.arr, step1,
  *                                     low2, high2, arr2.arr, step2,
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@@ -43891,7 +44078,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":812
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":830
  *             result_ptr = self.baeza_yates_helper(low1, high1, arr1.arr, step1,
  *                                     low2, high2, arr2.arr, step2,
  *                                     offset_by_one, len_last, num_subpatterns, &result_len)             # <<<<<<<<<<<<<<
@@ -43902,7 +44089,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":814
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":832
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  *         if result_len == 0:             # <<<<<<<<<<<<<<
@@ -43912,7 +44099,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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   if (__pyx_t_7) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":815
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
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  *         if result_len == 0:
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@@ -43921,7 +44108,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result_ptr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":816
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":834
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@@ -43936,19 +44123,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":818
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
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  *             result.arr = result_ptr
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-    __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 818; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_5 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 836; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":819
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":837
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@@ -43957,7 +44144,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     free(__pyx_v_result->arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":820
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":838
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  *             result.arr = result_ptr             # <<<<<<<<<<<<<<
@@ -43966,7 +44153,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->arr = __pyx_v_result_ptr;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":821
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":839
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  *             result.arr = result_ptr
  *             result.len = result_len             # <<<<<<<<<<<<<<
@@ -43975,7 +44162,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->len = __pyx_v_result_len;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":822
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":840
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  *             result.len = result_len
  *             result.size = result_len             # <<<<<<<<<<<<<<
@@ -43984,7 +44171,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
  */
     __pyx_v_result->size = __pyx_v_result_len;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":823
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":841
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  *             result.size = result_len
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@@ -43992,19 +44179,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_intersect_helper(struct
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+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr_high), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__arr), ((PyObject *)__pyx_v_result)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    if (PyDict_SetItem(__pyx_t_5, ((PyObject *)__pyx_n_s__num_subpatterns), __pyx_t_4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_5)); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 841; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":825
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":827
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":828
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":846
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":829
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":847
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":830
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":848
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":831
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":849
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":832
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":850
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+      __pyx_t_4 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_21), __pyx_t_2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_t_4)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 850; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":833
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
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+    __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_59)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":834
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":852
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   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":835
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":853
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-  __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_118)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyNumber_Add(__pyx_v_result, ((PyObject *)__pyx_kp_s_118)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_v_result = __pyx_t_2;
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":836
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":854
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  *         result = result + "}"
  *         return result             # <<<<<<<<<<<<<<
@@ -44188,7 +44375,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_loc2str(CYTHON_UNUSED st
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":838
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":856
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":842
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":860
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+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 860; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":843
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":861
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  *         prefix = prefix_node.phrase
  *         suffix = suffix_node.phrase             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 843; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_Phrase))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 861; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":844
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
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  *         prefix_loc = prefix_node.phrase_location             # <<<<<<<<<<<<<<
  *         suffix_loc = suffix_node.phrase_location
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-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 844; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_prefix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 862; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":845
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
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  *         suffix_loc = suffix_node.phrase_location             # <<<<<<<<<<<<<<
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  *         result = self.get_precomputed_collocation(phrase)
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-  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 845; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(__pyx_v_suffix_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(((__pyx_t_1) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_1, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":847
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":865
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+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s_119); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_3 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 865; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":848
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":849
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":867
  *         result = self.get_precomputed_collocation(phrase)
  *         if result is not None:
  *             intersect_method = "precomputed"             # <<<<<<<<<<<<<<
@@ -44311,7 +44498,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":851
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":869
  *             intersect_method = "precomputed"
  * 
  *         if result is None:             # <<<<<<<<<<<<<<
@@ -44321,7 +44508,7 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
   __pyx_t_4 = (((PyObject *)__pyx_v_result) == Py_None);
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":852
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":870
  * 
  *         if result is None:
  *             if self.use_baeza_yates:             # <<<<<<<<<<<<<<
@@ -44330,21 +44517,21 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
  */
     if (__pyx_v_self->use_baeza_yates) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":853
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
  *         if result is None:
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-      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_BAEZA_YATES); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_BAEZA_YATES); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_3);
-      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 853; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":854
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
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  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, BAEZA_YATES)
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@@ -44358,21 +44545,21 @@ static struct __pyx_obj_3_sa_PhraseLocation *__pyx_f_3_sa_23HieroCachingRuleFact
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":856
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
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+      __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->intersect_helper(__pyx_v_self, __pyx_v_prefix, __pyx_v_suffix, __pyx_v_prefix_loc, __pyx_v_suffix_loc, __pyx_v_3_sa_MERGE); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      if (!(likely(((__pyx_t_3) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_3, __pyx_ptype_3_sa_PhraseLocation))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 874; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":857
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":875
  *             else:
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":858
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":876
  *                 result = self.intersect_helper(prefix, suffix, prefix_loc, suffix_loc, MERGE)
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+          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 878; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 878; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("advance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 878; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":860
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":862
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+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 880; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":863
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":881
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  *         for (toskip, (i, alt, pathlen)) in frontier:             # <<<<<<<<<<<<<<
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+      __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_2); __pyx_t_2++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 863; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -44851,18 +45038,18 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12advance(struct __pyx_
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":871
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":889
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-  __pyx_t_2 = PyList_GET_SIZE(((PyObject *)__pyx_v_nf)); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 871; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyList_GET_SIZE(((PyObject *)__pyx_v_nf)); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":872
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":890
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+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__advance); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 890; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":874
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":892
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+  __Pyx_RaiseArgtupleInvalid("get_all_nodes_isteps_away", 1, 7, 7, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":876
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":894
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":878
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+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 896; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":879
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":897
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+  __pyx_t_2 = PyNumber_Add(__pyx_t_1, __pyx_v_skip); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_4 = PyObject_RichCompare(__pyx_t_2, __pyx_t_1, Py_GE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":880
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":898
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  *         if (i+spanlen+skip >= len(next_states)):
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@@ -45122,14 +45309,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":881
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":899
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-  __pyx_t_4 = PyList_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 881; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_4 = PyList_New(2); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 899; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_1 = ((PyObject *)PyList_AsTuple(__pyx_t_4)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 899; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":882
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-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 882; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 900; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":883
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":901
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  *         if (key in reachable_buffer):             # <<<<<<<<<<<<<<
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-  __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_key), __pyx_v_reachable_buffer, Py_EQ)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 883; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_key), __pyx_v_reachable_buffer, Py_EQ)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":884
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":902
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-    __pyx_t_1 = PyObject_GetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key)); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 884; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyObject_GetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key)); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
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     __pyx_v_reachable = __pyx_t_1;
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":886
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":904
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+    __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_4 = PyTuple_New(3); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_4), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":887
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":905
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+    if (PyObject_SetItem(__pyx_v_reachable_buffer, ((PyObject *)__pyx_v_key), __pyx_v_reachable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":888
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":906
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-    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_reachable); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_3 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_v_reachable); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_3); __Pyx_INCREF(__pyx_t_4); __pyx_t_3++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_3); __pyx_t_3++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 906; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 888; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":889
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":907
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+      __pyx_t_7 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_4 = PySequence_ITEM(__pyx_t_1, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 889; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 907; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":890
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@@ -45341,19 +45528,19 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":891
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
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+      __pyx_t_10 = PyObject_RichCompare(__pyx_v_jump, __pyx_v_skip, Py_LT); __Pyx_XGOTREF(__pyx_t_10); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_10); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":892
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":893
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+      __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":894
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+            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_11); __Pyx_INCREF(__pyx_t_4); __pyx_t_11++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_4 = PySequence_ITEM(__pyx_t_9, __pyx_t_11); __pyx_t_11++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 894; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 912; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":895
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  *                             if newel not in frontier:
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-          __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_next_id); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __pyx_t_10 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt_id); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 895; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyObject_GetItem(__pyx_t_4, __pyx_v_alt_id); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_5 = __Pyx_PyObject_IsTrue(__pyx_t_13); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":896
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  *                     for alt_id in range(len(fwords[next_id])):
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":897
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
  *                         if (fwords[next_id][alt_id][0] != EPSILON):
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+            __pyx_t_5 = (__Pyx_PySequence_Contains(((PyObject *)__pyx_v_newel), ((PyObject *)__pyx_v_frontier), Py_NE)); if (unlikely(__pyx_t_5 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             if (__pyx_t_5) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":898
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":916
  *                             newel = (next_id,alt_id,pathlen+jump)
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-              __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_10 = PyNumber_Add(__pyx_v_pathlen, __pyx_v_jump); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_13 = PyTuple_New(3); if (unlikely(!__pyx_t_13)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45521,7 +45708,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
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-              __pyx_t_14 = PyList_Append(__pyx_v_frontier, ((PyObject *)__pyx_t_13)); if (unlikely(__pyx_t_14 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 898; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyList_Append(__pyx_v_frontier, ((PyObject *)__pyx_t_13)); if (unlikely(__pyx_t_14 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 916; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45540,7 +45727,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_14get_all_nodes_isteps_
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":899
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
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-          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
         }
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-          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "reachable") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "reachable") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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       goto __pyx_L5_argtuple_error;
@@ -45631,7 +45818,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
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-  __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 901; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("reachable", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
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@@ -45642,7 +45829,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_17reachable(PyObject *_
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":901
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":902
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":920
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-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 920; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45850,36 +46037,36 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":909
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-      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_8); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = PyObject_RichCompare(__pyx_v_dist, __pyx_int_0, Py_EQ); __Pyx_XGOTREF(__pyx_t_8); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_8); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 927; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":910
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+        __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifrom, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 928; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":911
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":929
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  *                     if (ifrom not in ret):
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-          __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifrom); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifrom); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 929; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45887,29 +46074,29 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":913
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+        __pyx_t_8 = PyObject_GetAttr(((PyObject *)__pyx_v_self), __pyx_n_s__reachable); if (unlikely(!__pyx_t_8)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_3 = PyObject_GetItem(__pyx_v_fwords, __pyx_v_ifrom); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_7 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyObject_GetItem(__pyx_t_3, __pyx_v_alt_id); if (!__pyx_t_7) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_7 = PyNumber_Add(__pyx_v_ifrom, __pyx_t_3); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_3 = PyNumber_Subtract(__pyx_v_dist, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyNumber_Subtract(__pyx_v_dist, __pyx_int_1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_6 = PyTuple_New(3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45920,7 +46107,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-        __pyx_t_3 = PyObject_Call(__pyx_t_8, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_Call(__pyx_t_8, ((PyObject *)__pyx_t_6), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45928,7 +46115,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-          __pyx_t_10 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = -1; __pyx_t_6 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -45937,23 +46124,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
           if (!__pyx_t_11 && PyList_CheckExact(__pyx_t_6)) {
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-            __pyx_t_3 = PyList_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyList_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #endif
           } else if (!__pyx_t_11 && PyTuple_CheckExact(__pyx_t_6)) {
             if (__pyx_t_10 >= PyTuple_GET_SIZE(__pyx_t_6)) break;
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-            __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyTuple_GET_ITEM(__pyx_t_6, __pyx_t_10); __Pyx_INCREF(__pyx_t_3); __pyx_t_10++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             #else
-            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PySequence_ITEM(__pyx_t_6, __pyx_t_10); __pyx_t_10++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               if (PyErr_Occurred()) {
                 if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 931; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               break;
             }
@@ -45963,24 +46150,24 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":914
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":932
  *                 else:
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  *                         if (ifromchild not in ret):             # <<<<<<<<<<<<<<
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  */
-          __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifromchild, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 914; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = (__Pyx_PySequence_Contains(__pyx_v_ifromchild, ((PyObject *)__pyx_v_ret), Py_NE)); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 932; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           if (__pyx_t_4) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":915
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":933
  *                     for ifromchild in self.reachable(fwords,ifrom+fwords[ifrom][alt_id][2],dist-1):
  *                         if (ifromchild not in ret):
  *                             ret.append(ifromchild)             # <<<<<<<<<<<<<<
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  *         return ret
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-            __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifromchild); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyList_Append(__pyx_v_ret, __pyx_v_ifromchild); if (unlikely(__pyx_t_9 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 933; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             goto __pyx_L11;
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@@ -45993,7 +46180,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_16reachable(struct __py
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":917
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":935
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  * 
  *         return ret             # <<<<<<<<<<<<<<
@@ -46054,16 +46241,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
         case  1:
         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__ifrom)) != 0)) kw_args--;
         else {
-          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "shortest") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "shortest") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -46078,7 +46265,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
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   goto __pyx_L4_argument_unpacking_done;
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-  __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 919; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("shortest", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 937; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
   __pyx_L3_error:;
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@@ -46089,7 +46276,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_19shortest(PyObject *__
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":919
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":921
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":939
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":922
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":924
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":928
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":938
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":939
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":940
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":943
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":944
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":962
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+    __pyx_t_5 = PyObject_GetItem(__pyx_v__columns, __pyx_t_1); if (!__pyx_t_5) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":945
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":969
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":987
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":970
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":975
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@@ -47331,32 +47684,32 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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   __pyx_cur_scope->__pyx_v_x1 = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":983
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1006
  *         xroot = None
  *         x1 = sym_setindex(self.category, 1)
  *         if x1 in self.rules.root.children:             # <<<<<<<<<<<<<<
  *             xroot = self.rules.root.children[x1]
  *         else:
  */
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+  __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_x1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 983; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_t_11, __pyx_t_10, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1006; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":984
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1007
  *         x1 = sym_setindex(self.category, 1)
  *         if x1 in self.rules.root.children:
  *             xroot = self.rules.root.children[x1]             # <<<<<<<<<<<<<<
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())
  */
-    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1007; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 984; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_11 = __Pyx_GetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, sizeof(int), PyInt_FromLong); if (!__pyx_t_11) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1007; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -47368,21 +47721,21 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
   }
   /*else*/ {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":986
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1009
  *             xroot = self.rules.root.children[x1]
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())             # <<<<<<<<<<<<<<
  *             self.rules.root.children[x1] = xroot
  * 
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+    __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_self->rules->root) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_self->rules->root) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_10) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
-    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -47391,101 +47744,104 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
     __pyx_cur_scope->__pyx_v_xroot = __pyx_t_10;
     __pyx_t_10 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":987
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1010
  *         else:
  *             xroot = ExtendedTrieNode(suffix_link=self.rules.root, phrase_location=PhraseLocation())
  *             self.rules.root.children[x1] = xroot             # <<<<<<<<<<<<<<
  * 
  *         for i in range(self.min_gap_size, len(fwords)):
  */
-    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_self->rules->root, __pyx_n_s__children); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    if (__Pyx_SetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, __pyx_cur_scope->__pyx_v_xroot, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 987; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    if (__Pyx_SetItemInt(__pyx_t_10, __pyx_cur_scope->__pyx_v_x1, __pyx_cur_scope->__pyx_v_xroot, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1010; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":989
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1012
  *             self.rules.root.children[x1] = xroot
  * 
  *         for i in range(self.min_gap_size, len(fwords)):             # <<<<<<<<<<<<<<
  *             for alt in range(0, len(fwords[i])):
  *                 if fwords[i][alt][0] != EPSILON:
  */
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-  for (__pyx_t_4 = __pyx_cur_scope->__pyx_v_self->min_gap_size; __pyx_t_4 < __pyx_t_1; __pyx_t_4+=1) {
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+  __pyx_t_2 = PyObject_Length(__pyx_t_10); if (unlikely(__pyx_t_2 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1012; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
+  for (__pyx_t_4 = __pyx_cur_scope->__pyx_v_self->min_gap_size; __pyx_t_4 < __pyx_t_2; __pyx_t_4+=1) {
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":990
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1013
  * 
  *         for i in range(self.min_gap_size, len(fwords)):
  *             for alt in range(0, len(fwords[i])):             # <<<<<<<<<<<<<<
  *                 if fwords[i][alt][0] != EPSILON:
  *                     frontier.append((i-self.min_gap_size, i, (i,), alt, self.min_gap_size, xroot, (x1,), True))
  */
-    __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 990; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_fwords, __pyx_cur_scope->__pyx_v_i, sizeof(int), PyInt_FromLong); if (!__pyx_t_10) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+    __pyx_t_5 = PyObject_Length(__pyx_t_10); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":991
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1014
  *         for i in range(self.min_gap_size, len(fwords)):
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":992
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1015
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+        __pyx_t_14 = PyTuple_New(8); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1015; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        PyTuple_SET_ITEM(__pyx_t_14, 4, __pyx_t_2);
-        __Pyx_GIVEREF(__pyx_t_2);
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":994
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":995
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":996
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":998
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":999
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1000
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-    __pyx_t_13 = ((PyObject *)__pyx_cur_scope->__pyx_v_frontier); __Pyx_INCREF(__pyx_t_13); __pyx_t_1 = 0;
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-      if ((likely(PyTuple_CheckExact(__pyx_t_2))) || (PyList_CheckExact(__pyx_t_2))) {
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-          {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1000; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          PyTuple_SET_ITEM(__pyx_t_3, 1, __pyx_t_1);
+          __Pyx_GIVEREF(__pyx_t_1);
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           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_input_match);
@@ -47876,13 +48238,13 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_is_shadow_path);
           __pyx_t_15 = 0;
-          __pyx_t_2 = 0;
+          __pyx_t_1 = 0;
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-          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_3)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1009; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_12 = PyList_Append(__pyx_cur_scope->__pyx_v_frontier, ((PyObject *)__pyx_t_3)); if (unlikely(__pyx_t_12 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1032; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1010
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1033
  *                     for nualt in range(0,len(fwords[i+spanlen])):
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@@ -47894,19 +48256,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1012
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1035
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  *                 phrase = prefix + (word_id,)             # <<<<<<<<<<<<<<
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-      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1012; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_word_id);
-      __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_prefix, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1012; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyNumber_Add(__pyx_cur_scope->__pyx_v_prefix, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1035; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
       __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_phrase);
@@ -47915,19 +48277,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       __pyx_cur_scope->__pyx_v_phrase = __pyx_t_16;
       __pyx_t_16 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1013
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1036
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  *                 hiero_phrase = Phrase(phrase)             # <<<<<<<<<<<<<<
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-      __pyx_t_16 = PyTuple_New(1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyTuple_New(1); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_INCREF(__pyx_cur_scope->__pyx_v_phrase);
       PyTuple_SET_ITEM(__pyx_t_16, 0, __pyx_cur_scope->__pyx_v_phrase);
       __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_phrase);
-      __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1013; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_16), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1036; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       __Pyx_DECREF(((PyObject *)__pyx_t_16)); __pyx_t_16 = 0;
       __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase));
@@ -47936,23 +48298,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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       __pyx_t_3 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1014
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1037
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  * 
  *                 lookup_required = False
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-      __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase), __pyx_n_s__arity); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase), __pyx_n_s__arity); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_16 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1014; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_t_16); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1037; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1016
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
  *                 arity = hiero_phrase.arity()
  * 
  *                 lookup_required = False             # <<<<<<<<<<<<<<
@@ -47961,36 +48323,36 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
       __pyx_cur_scope->__pyx_v_lookup_required = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1017
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1040
  * 
  *                 lookup_required = False
  *                 if word_id in node.children:             # <<<<<<<<<<<<<<
  *                     if node.children[word_id] is None:
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-      __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1040; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_16, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1017; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_16, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1040; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1018
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
  *                 lookup_required = False
  *                 if word_id in node.children:
  *                     if node.children[word_id] is None:             # <<<<<<<<<<<<<<
  *                         # Path dead-ends at this node
  *                         continue
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-        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1041; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1018; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1041; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
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         __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1020
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1043
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  *                         # Path dead-ends at this node
  *                         continue             # <<<<<<<<<<<<<<
@@ -48002,16 +48364,16 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1023
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
  *                     else:
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  *                         node = node.children[word_id]             # <<<<<<<<<<<<<<
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  *                     if node.suffix_link is None:
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-          __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1023; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __pyx_t_16 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1023; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_node);
@@ -48025,20 +48387,20 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1025
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1048
  *                         node = node.children[word_id]
  *                 else:
  *                     if node.suffix_link is None:             # <<<<<<<<<<<<<<
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-        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1025; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1048; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1027
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1050
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  *                         # Current node is root; lookup required
  *                         lookup_required = True             # <<<<<<<<<<<<<<
@@ -48050,54 +48412,54 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1029
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1052
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  *                     else:
  *                         if word_id in node.suffix_link.children:             # <<<<<<<<<<<<<<
  *                             if node.suffix_link.children[word_id] is None:
  *                                 # Suffix link reports path is dead end
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-          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_16);
-          __pyx_t_3 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_3, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1029; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = (__Pyx_PySequence_Contains(__pyx_cur_scope->__pyx_v_word_id, __pyx_t_3, Py_EQ)); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1052; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1030
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1053
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-            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1030; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1053; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_16 = PyObject_GetAttr(__pyx_t_3, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1053; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_3 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1053; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1032
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-              __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1032; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_3);
-              if (PyObject_SetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1032; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyObject_SetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1033
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1056
  *                                 # Suffix link reports path is dead end
  *                                 node.children[word_id] = None
  *                                 continue             # <<<<<<<<<<<<<<
@@ -48109,7 +48471,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1036
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1059
  *                             else:
  *                                 # Suffix link indicates lookup is reqired
  *                                 lookup_required = True             # <<<<<<<<<<<<<<
@@ -48123,18 +48485,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
  *                         else:
  *                             #ERROR: We never get here
  *                             raise Exception("Keyword trie error")             # <<<<<<<<<<<<<<
  *                 # checking whether lookup_required
  *                 if lookup_required:
  */
-            __pyx_t_3 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_122), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_Call(__pyx_builtin_Exception, ((PyObject *)__pyx_k_tuple_122), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_3);
             __Pyx_Raise(__pyx_t_3, 0, 0, 0);
             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           __pyx_L30:;
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@@ -48142,7 +48504,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
       }
       __pyx_L27:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1041
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1064
  *                             raise Exception("Keyword trie error")
  *                 # checking whether lookup_required
  *                 if lookup_required:             # <<<<<<<<<<<<<<
@@ -48151,7 +48513,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
       if (__pyx_cur_scope->__pyx_v_lookup_required) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1042
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
  *                 # checking whether lookup_required
  *                 if lookup_required:
  *                     new_node = None             # <<<<<<<<<<<<<<
@@ -48164,78 +48526,78 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __Pyx_GIVEREF(Py_None);
         __pyx_cur_scope->__pyx_v_new_node = Py_None;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1043
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1066
  *                 if lookup_required:
  *                     new_node = None
  *                     if is_shadow_path:             # <<<<<<<<<<<<<<
  *                         # Extending shadow path
  *                         # on the shadow path we don't do any search, we just use info from suffix link
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-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1043; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1066; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1046
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1069
  *                         # Extending shadow path
  *                         # on the shadow path we don't do any search, we just use info from suffix link
  *                         new_node = ExtendedTrieNode(phrase_location=node.suffix_link.children[word_id].phrase_location,             # <<<<<<<<<<<<<<
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-          __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_16 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __pyx_t_2 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_GOTREF(__pyx_t_2);
+          __pyx_t_1 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__children); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_16 = PyObject_GetItem(__pyx_t_1, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_16) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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-          __Pyx_GOTREF(__pyx_t_2);
+          __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+          __pyx_t_1 = PyObject_GetAttr(__pyx_t_16, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_GOTREF(__pyx_t_1);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1047
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1070
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  *                                 phrase=hiero_phrase)
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-          __pyx_t_2 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_16 = PyObject_GetAttr(__pyx_t_2, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_GOTREF(__pyx_t_1);
+          __pyx_t_16 = PyObject_GetAttr(__pyx_t_1, __pyx_n_s__children); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-          __pyx_t_2 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_2) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1047; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_GOTREF(__pyx_t_2);
+          __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+          __pyx_t_1 = PyObject_GetItem(__pyx_t_16, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_GOTREF(__pyx_t_1);
           __Pyx_DECREF(__pyx_t_16); __pyx_t_16 = 0;
-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1048
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1071
  *                         new_node = ExtendedTrieNode(phrase_location=node.suffix_link.children[word_id].phrase_location,
  *                                 suffix_link=node.suffix_link.children[word_id],
  *                                 phrase=hiero_phrase)             # <<<<<<<<<<<<<<
  *                     else:
  *                         if arity > 0:
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-          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __pyx_t_2 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1046; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __Pyx_GOTREF(__pyx_t_2);
+          if (PyDict_SetItem(__pyx_t_3, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __Pyx_GOTREF(__pyx_t_1);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_new_node);
           __Pyx_DECREF(__pyx_cur_scope->__pyx_v_new_node);
-          __Pyx_GIVEREF(__pyx_t_2);
-          __pyx_cur_scope->__pyx_v_new_node = __pyx_t_2;
-          __pyx_t_2 = 0;
+          __Pyx_GIVEREF(__pyx_t_1);
+          __pyx_cur_scope->__pyx_v_new_node = __pyx_t_1;
+          __pyx_t_1 = 0;
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         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1050
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1073
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  *                     else:
  *                         if arity > 0:             # <<<<<<<<<<<<<<
@@ -48245,24 +48607,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1052
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1075
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  *                             # Suffix array search
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-            __Pyx_GOTREF(__pyx_t_2);
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-            __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1055
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-            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1055; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1078; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_XGOTREF(((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location));
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1056
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1079
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+            __Pyx_GOTREF(((PyObject *)__pyx_t_1));
+            __pyx_t_5 = PyObject_Length(__pyx_cur_scope->__pyx_v_phrase); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1079; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_15 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1079; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_11 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_phrase_location->sa_high); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1079; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_9 = PyTuple_New(4); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1079; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_2));
-            __Pyx_GIVEREF(((PyObject *)__pyx_t_2));
+            PyTuple_SET_ITEM(__pyx_t_9, 0, ((PyObject *)__pyx_t_1));
+            __Pyx_GIVEREF(((PyObject *)__pyx_t_1));
             PyTuple_SET_ITEM(__pyx_t_9, 1, __pyx_t_16);
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             __Pyx_GIVEREF(__pyx_t_15);
             PyTuple_SET_ITEM(__pyx_t_9, 3, __pyx_t_11);
             __Pyx_GIVEREF(__pyx_t_11);
-            __pyx_t_2 = 0;
+            __pyx_t_1 = 0;
             __pyx_t_16 = 0;
             __pyx_t_15 = 0;
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-            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1056; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1079; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48334,7 +48696,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_cur_scope->__pyx_v_sa_range = __pyx_t_11;
             __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1057
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1080
  *                             phrase_location = node.phrase_location
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)
  *                             if sa_range is not None:             # <<<<<<<<<<<<<<
@@ -48344,24 +48706,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             __pyx_t_8 = (__pyx_cur_scope->__pyx_v_sa_range != Py_None);
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1058
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1081
  *                             sa_range = self.fsa.lookup(sym_tostring(phrase[-1]), len(phrase)-1, phrase_location.sa_low, phrase_location.sa_high)
  *                             if sa_range is not None:
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])             # <<<<<<<<<<<<<<
  *                             else:
  *                                 phrase_location = None
  */
-              __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 0, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_low), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_low), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_9 = __Pyx_GetItemInt(__pyx_cur_scope->__pyx_v_sa_range, 1, sizeof(long), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_high), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__sa_high), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_PhraseLocation)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48373,7 +48735,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
             }
             /*else*/ {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1060
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1083
  *                                 phrase_location = PhraseLocation(sa_low=sa_range[0], sa_high=sa_range[1])
  *                             else:
  *                                 phrase_location = None             # <<<<<<<<<<<<<<
@@ -48390,7 +48752,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L34:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
  *                                 phrase_location = None
  * 
  *                         if phrase_location is None:             # <<<<<<<<<<<<<<
@@ -48400,19 +48762,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_t_8 = (((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location) == Py_None);
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1063
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
  * 
  *                         if phrase_location is None:
  *                             node.children[word_id] = None             # <<<<<<<<<<<<<<
  *                             # Search failed
  *                             continue
  */
-            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            if (PyObject_SetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1063; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            if (PyObject_SetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_word_id, Py_None) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1065
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1088
  *                             node.children[word_id] = None
  *                             # Search failed
  *                             continue             # <<<<<<<<<<<<<<
@@ -48424,7 +48786,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L36:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1067
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1090
  *                             continue
  *                         # Search succeeded
  *                         suffix_link = self.rules.root             # <<<<<<<<<<<<<<
@@ -48437,32 +48799,32 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_self->rules->root);
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1068
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
  *                         # Search succeeded
  *                         suffix_link = self.rules.root
  *                         if node.suffix_link is not None:             # <<<<<<<<<<<<<<
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  */
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1068; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1091; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __pyx_t_8 = (__pyx_t_9 != Py_None);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1069
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
  *                         suffix_link = self.rules.root
  *                         if node.suffix_link is not None:
  *                             suffix_link = node.suffix_link.children[word_id]             # <<<<<<<<<<<<<<
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,
  */
-            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_11 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_11);
             __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-            __pyx_t_9 = PyObject_GetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1069; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_9 = PyObject_GetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_9);
             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_suffix_link);
@@ -48474,35 +48836,35 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L37:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1070
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
  *                         if node.suffix_link is not None:
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)
  */
-          __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_9));
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase_location), ((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase_location), ((PyObject *)__pyx_cur_scope->__pyx_v_phrase_location)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1071
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1094
  *                             suffix_link = node.suffix_link.children[word_id]
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,             # <<<<<<<<<<<<<<
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node
  */
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_suffix_link) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__suffix_link), __pyx_cur_scope->__pyx_v_suffix_link) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1072
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1095
  *                         new_node = ExtendedTrieNode(phrase_location=phrase_location,
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)             # <<<<<<<<<<<<<<
  *                     node.children[word_id] = new_node
  *                     node = new_node
  */
-          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-          __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1070; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_9, ((PyObject *)__pyx_n_s__phrase), ((PyObject *)__pyx_cur_scope->__pyx_v_hiero_phrase)) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_DECREF(((PyObject *)__pyx_t_9)); __pyx_t_9 = 0;
           __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_new_node);
@@ -48513,19 +48875,19 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         }
         __pyx_L33:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1073
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1096
  *                                 suffix_link=suffix_link,
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node             # <<<<<<<<<<<<<<
  *                     node = new_node
  * 
  */
-        __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_11);
-        if (PyObject_SetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id, __pyx_cur_scope->__pyx_v_new_node) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1073; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        if (PyObject_SetItem(__pyx_t_11, __pyx_cur_scope->__pyx_v_word_id, __pyx_cur_scope->__pyx_v_new_node) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1074
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1097
  *                                 phrase=hiero_phrase)
  *                     node.children[word_id] = new_node
  *                     node = new_node             # <<<<<<<<<<<<<<
@@ -48538,7 +48900,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __Pyx_GIVEREF(__pyx_cur_scope->__pyx_v_new_node);
         __pyx_cur_scope->__pyx_v_node = __pyx_cur_scope->__pyx_v_new_node;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1079
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1102
  *                     This should happen before we get to extraction (so that
  *                     the node will exist if needed)'''
  *                     if arity < self.max_nonterminals:             # <<<<<<<<<<<<<<
@@ -48548,14 +48910,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
         __pyx_t_8 = (__pyx_cur_scope->__pyx_v_arity < __pyx_cur_scope->__pyx_v_self->max_nonterminals);
         if (__pyx_t_8) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1080
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1103
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  *                     if arity < self.max_nonterminals:
  *                         xcat_index = arity+1             # <<<<<<<<<<<<<<
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index
  */
-          __pyx_t_11 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_arity + 1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1080; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyInt_FromLong((__pyx_cur_scope->__pyx_v_arity + 1)); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1103; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_11);
           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_xcat_index);
           __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_xcat_index);
@@ -48563,17 +48925,17 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           __pyx_cur_scope->__pyx_v_xcat_index = __pyx_t_11;
           __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1081
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1104
  *                     if arity < self.max_nonterminals:
  *                         xcat_index = arity+1
  *                         xcat = sym_setindex(self.category, xcat_index)             # <<<<<<<<<<<<<<
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:
  */
-          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1081; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1082
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1105
  *                         xcat_index = arity+1
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index             # <<<<<<<<<<<<<<
@@ -48586,24 +48948,24 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __pyx_cur_scope->__pyx_v_suffix_link_xcat_index = __pyx_cur_scope->__pyx_v_xcat_index;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1083
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1106
  *                         xcat = sym_setindex(self.category, xcat_index)
  *                         suffix_link_xcat_index = xcat_index
  *                         if is_shadow_path:             # <<<<<<<<<<<<<<
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
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-          __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1083; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1084
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
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  *                         if is_shadow_path:
  *                             suffix_link_xcat_index = xcat_index-1             # <<<<<<<<<<<<<<
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
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-            __pyx_t_11 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_xcat_index, __pyx_int_1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1084; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyNumber_Subtract(__pyx_cur_scope->__pyx_v_xcat_index, __pyx_int_1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index);
             __Pyx_DECREF(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index);
@@ -48614,159 +48976,159 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
           }
           __pyx_L39:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1085
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1108
  *                         if is_shadow_path:
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)             # <<<<<<<<<<<<<<
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  */
-          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1085; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_19 = __Pyx_PyInt_AsInt(__pyx_cur_scope->__pyx_v_suffix_link_xcat_index); if (unlikely((__pyx_t_19 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_cur_scope->__pyx_v_suffix_link_xcat = __pyx_f_3_sa_sym_setindex(__pyx_cur_scope->__pyx_v_self->category, __pyx_t_19);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
  *                             suffix_link_xcat_index = xcat_index-1
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,             # <<<<<<<<<<<<<<
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],
  *                                 phrase= Phrase(phrase + (xcat,)))
  */
-          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(((PyObject *)__pyx_t_11));
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase_location), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1087
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
  *                         suffix_link_xcat = sym_setindex(self.category, suffix_link_xcat_index)
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
  *                                 suffix_link=node.suffix_link.children[suffix_link_xcat],             # <<<<<<<<<<<<<<
  *                                 phrase= Phrase(phrase + (xcat,)))
  * 
  */
-          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__suffix_link); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
-          __pyx_t_3 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyObject_GetAttr(__pyx_t_9, __pyx_n_s__children); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
-          __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_suffix_link_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1087; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = __Pyx_GetItemInt(__pyx_t_3, __pyx_cur_scope->__pyx_v_suffix_link_xcat, sizeof(int), PyInt_FromLong); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
-          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__suffix_link), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_DECREF(__pyx_t_9); __pyx_t_9 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1088
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
  *                         node.children[xcat] = ExtendedTrieNode(phrase_location=node.phrase_location,
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+          __pyx_t_9 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_xcat); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_3);
           PyTuple_SET_ITEM(__pyx_t_3, 0, __pyx_t_9);
           __Pyx_GIVEREF(__pyx_t_9);
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-          __pyx_t_9 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_9 = PyNumber_Add(__pyx_cur_scope->__pyx_v_phrase, ((PyObject *)__pyx_t_3)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_9);
           __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
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+          __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__phrase), __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_9 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_ExtendedTrieNode)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1086
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
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-          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__children); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          if (__Pyx_SetItemInt(__pyx_t_11, __pyx_cur_scope->__pyx_v_xcat, __pyx_t_9, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1086; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          if (__Pyx_SetItemInt(__pyx_t_11, __pyx_cur_scope->__pyx_v_xcat, __pyx_t_9, sizeof(int), PyInt_FromLong) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1091
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
  * 
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  *                     if not is_shadow_path:             # <<<<<<<<<<<<<<
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  */
-        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1091; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1092
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  *                     # sample from range
  *                     if not is_shadow_path:
  *                         sample = self.sampler.sample(node.phrase_location)             # <<<<<<<<<<<<<<
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-          __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1092; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          if (!(likely(((__pyx_t_11) == Py_None) || likely(__Pyx_TypeTest(__pyx_t_11, __pyx_ptype_3_sa_IntList))))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __pyx_cur_scope->__pyx_v_sample = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_11);
           __pyx_t_11 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1093
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
  *                     if not is_shadow_path:
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns             # <<<<<<<<<<<<<<
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  *                         for j from 0 <= j < num_subpatterns:
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-          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1093; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_node, __pyx_n_s__phrase_location); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1094
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1117
  *                         sample = self.sampler.sample(node.phrase_location)
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
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-          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1094; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyDict_New(); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          if (PyDict_SetItem(__pyx_t_11, ((PyObject *)__pyx_n_s__initial_len), __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+          __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), ((PyObject *)__pyx_t_11)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1117; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48775,7 +49137,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1095
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1118
  *                         num_subpatterns = (<PhraseLocation> node.phrase_location).num_subpatterns
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:             # <<<<<<<<<<<<<<
@@ -48785,7 +49147,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1096
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
  *                         chunklen = IntList(initial_len=num_subpatterns)
  *                         for j from 0 <= j < num_subpatterns:
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@@ -48795,14 +49157,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1097
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
  *                         for j from 0 <= j < num_subpatterns:
  *                             chunklen.arr[j] = hiero_phrase.chunklen(j)
  *                         extracts = []             # <<<<<<<<<<<<<<
  *                         j = 0
  *                         extract_start = monitor_cpu()
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-          __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1097; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48810,7 +49172,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1098
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
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  *                         j = 0             # <<<<<<<<<<<<<<
@@ -48819,14 +49181,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
  */
           __pyx_cur_scope->__pyx_v_j = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1099
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
  *                         extracts = []
  *                         j = 0
  *                         extract_start = monitor_cpu()             # <<<<<<<<<<<<<<
  *                         while j < sample.len:
  *                             extract = []
  */
-          __pyx_t_3 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1099; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_3 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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           __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_extract_start);
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@@ -48834,7 +49196,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           __pyx_t_3 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1100
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1123
  *                         j = 0
  *                         extract_start = monitor_cpu()
  *                         while j < sample.len:             # <<<<<<<<<<<<<<
@@ -48845,14 +49207,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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             if (!__pyx_t_20) break;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1101
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
  *                         extract_start = monitor_cpu()
  *                         while j < sample.len:
  *                             extract = []             # <<<<<<<<<<<<<<
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)
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-            __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1101; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyList_New(0); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_XDECREF(__pyx_cur_scope->__pyx_v_extract);
@@ -48860,7 +49222,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1103
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1126
  *                             extract = []
  * 
  *                             assign_matching(&matching, sample.arr, j, num_subpatterns, self.fda.sent_id.arr)             # <<<<<<<<<<<<<<
@@ -48869,21 +49231,21 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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             __pyx_f_3_sa_assign_matching((&__pyx_cur_scope->__pyx_v_matching), __pyx_cur_scope->__pyx_v_sample->arr, __pyx_cur_scope->__pyx_v_j, __pyx_cur_scope->__pyx_v_num_subpatterns, __pyx_cur_scope->__pyx_v_self->fda->sent_id->arr);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1104
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1127
  * 
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  *                             loc = tuple(sample[j:j+num_subpatterns])             # <<<<<<<<<<<<<<
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])
  */
-            __pyx_t_3 = __Pyx_PySequence_GetSlice(((PyObject *)__pyx_cur_scope->__pyx_v_sample), __pyx_cur_scope->__pyx_v_j, (__pyx_cur_scope->__pyx_v_j + __pyx_cur_scope->__pyx_v_num_subpatterns)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = __Pyx_PySequence_GetSlice(((PyObject *)__pyx_cur_scope->__pyx_v_sample), __pyx_cur_scope->__pyx_v_j, (__pyx_cur_scope->__pyx_v_j + __pyx_cur_scope->__pyx_v_num_subpatterns)); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_11 = PyTuple_New(1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1104; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyTuple_New(1); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_11), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1127; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48892,14 +49254,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1105
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1128
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  *                             loc = tuple(sample[j:j+num_subpatterns])
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)             # <<<<<<<<<<<<<<
  *                             extracts.extend([(e, loc) for e in extract])
  *                             j = j + num_subpatterns
  */
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+            __pyx_t_3 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_cur_scope->__pyx_v_self->__pyx_vtab)->extract(__pyx_cur_scope->__pyx_v_self, __pyx_cur_scope->__pyx_v_hiero_phrase, (&__pyx_cur_scope->__pyx_v_matching), __pyx_cur_scope->__pyx_v_chunklen->arr, __pyx_cur_scope->__pyx_v_num_subpatterns); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1128; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_GOTREF(__pyx_cur_scope->__pyx_v_extract);
             __Pyx_DECREF(__pyx_cur_scope->__pyx_v_extract);
@@ -48907,22 +49269,22 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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             __pyx_t_3 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1106
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1129
  *                             loc = tuple(sample[j:j+num_subpatterns])
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])             # <<<<<<<<<<<<<<
  *                             j = j + num_subpatterns
  * 
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+            __pyx_t_3 = PyObject_GetAttr(((PyObject *)__pyx_cur_scope->__pyx_v_extracts), __pyx_n_s__extend); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_11 = PyList_New(0); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __pyx_t_21 = NULL;
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-              __pyx_t_5 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_extract); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_5 = -1; __pyx_t_9 = PyObject_GetIter(__pyx_cur_scope->__pyx_v_extract); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48930,23 +49292,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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+                __pyx_t_15 = PyList_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_9, __pyx_t_5); __Pyx_INCREF(__pyx_t_15); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PySequence_ITEM(__pyx_t_9, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                    else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -48957,7 +49319,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
               __Pyx_GIVEREF(__pyx_t_15);
               __pyx_cur_scope->__pyx_v_e = __pyx_t_15;
               __pyx_t_15 = 0;
-              __pyx_t_15 = PyTuple_New(2); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(2); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __Pyx_INCREF(__pyx_cur_scope->__pyx_v_e);
               PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_cur_scope->__pyx_v_e);
@@ -48965,23 +49327,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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               PyTuple_SET_ITEM(__pyx_t_15, 1, __pyx_cur_scope->__pyx_v_loc);
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+              if (unlikely(__Pyx_PyList_Append(__pyx_t_11, (PyObject*)__pyx_t_15))) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_9 = PyTuple_New(1); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_DECREF(((PyObject *)__pyx_t_11)); __pyx_t_11 = 0;
-            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_3, ((PyObject *)__pyx_t_9), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
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             __Pyx_DECREF(__pyx_t_11); __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1107
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1130
  *                             extract = self.extract(hiero_phrase, &matching, chunklen.arr, num_subpatterns)
  *                             extracts.extend([(e, loc) for e in extract])
  *                             j = j + num_subpatterns             # <<<<<<<<<<<<<<
@@ -48991,7 +49353,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1109
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1132
  *                             j = j + num_subpatterns
  * 
  *                         num_samples = sample.len/num_subpatterns             # <<<<<<<<<<<<<<
@@ -49000,22 +49362,22 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1132; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1110
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1133
  * 
  *                         num_samples = sample.len/num_subpatterns
  *                         extract_stop = monitor_cpu()             # <<<<<<<<<<<<<<
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  *                         if len(extracts) > 0:
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-          __pyx_t_11 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_11 = PyFloat_FromDouble(__pyx_f_3_sa_monitor_cpu()); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1133; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49023,46 +49385,46 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1111
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1112
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+          __pyx_t_5 = PyList_GET_SIZE(((PyObject *)__pyx_cur_scope->__pyx_v_extracts)); if (unlikely(__pyx_t_5 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1135; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1113
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@@ -49071,23 +49433,23 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1114
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1137
  *                         if len(extracts) > 0:
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))             # <<<<<<<<<<<<<<
  *                             for (f, e, count, als), loc in extracts:
  *                                 fcount[f] += count
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+            __pyx_t_9 = __Pyx_GetName(__pyx_m, __pyx_n_s__defaultdict); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_11 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_lambda4, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_3 = PyTuple_New(1); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_11 = PyObject_Call(__pyx_t_9, ((PyObject *)__pyx_t_3), NULL); if (unlikely(!__pyx_t_11)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1137; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __pyx_t_11 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1115
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1138
  *                             fcount = Counter()
  *                             fphrases = defaultdict(lambda: defaultdict(lambda: defaultdict(list)))
  *                             for (f, e, count, als), loc in extracts:             # <<<<<<<<<<<<<<
@@ -49108,9 +49470,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-              __pyx_t_3 = PyList_GET_ITEM(__pyx_t_11, __pyx_t_5); __Pyx_INCREF(__pyx_t_3); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PyList_GET_ITEM(__pyx_t_11, __pyx_t_5); __Pyx_INCREF(__pyx_t_3); __pyx_t_5++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              __pyx_t_3 = PySequence_ITEM(__pyx_t_11, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_3 = PySequence_ITEM(__pyx_t_11, __pyx_t_5); __pyx_t_5++; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49135,14 +49497,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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+                __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_16 = PyObject_GetIter(__pyx_t_3); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                  __pyx_t_2 = PyTuple_GET_ITEM(sequence, 1); 
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                   __pyx_t_16 = PyList_GET_ITEM(sequence, 0); 
-                  __pyx_t_2 = PyList_GET_ITEM(sequence, 1); 
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-                __Pyx_INCREF(__pyx_t_2);
+                __Pyx_INCREF(__pyx_t_1);
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-                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_2,&__pyx_t_10,&__pyx_t_7};
+                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_1,&__pyx_t_10,&__pyx_t_7};
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+                  PyObject* item = PySequence_ITEM(sequence, i); if (unlikely(!item)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_2,&__pyx_t_10,&__pyx_t_7};
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+                PyObject** temps[4] = {&__pyx_t_16,&__pyx_t_1,&__pyx_t_10,&__pyx_t_7};
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-                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_14), 4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_14), 4) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1138; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49229,9 +49591,9 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-              __Pyx_GIVEREF(__pyx_t_2);
-              __pyx_cur_scope->__pyx_v_e = __pyx_t_2;
-              __pyx_t_2 = 0;
+              __Pyx_GIVEREF(__pyx_t_1);
+              __pyx_cur_scope->__pyx_v_e = __pyx_t_1;
+              __pyx_t_1 = 0;
               __Pyx_XGOTREF(__pyx_cur_scope->__pyx_v_count);
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-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1116
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-              __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3); if (!__pyx_t_15) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_9 = PyNumber_InPlaceAdd(__pyx_t_15, __pyx_cur_scope->__pyx_v_count); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              if (PyObject_SetItem(__pyx_cur_scope->__pyx_v_fcount, __pyx_t_3, __pyx_t_9) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1139; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1117
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1140
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               __Pyx_GOTREF(__pyx_t_3);
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+              __pyx_t_9 = PyObject_GetItem(__pyx_t_3, __pyx_cur_scope->__pyx_v_e); if (!__pyx_t_9) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_3 = PyObject_GetItem(__pyx_t_9, __pyx_cur_scope->__pyx_v_als); if (!__pyx_t_3) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_9 = __Pyx_PyObject_Append(__pyx_t_3, __pyx_cur_scope->__pyx_v_loc); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1140; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1118
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-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+            __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_fphrases, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_23), (&__pyx_t_19)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1119
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-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+              __pyx_t_9 = __Pyx_dict_iterator(__pyx_cur_scope->__pyx_v_elist, 0, ((PyObject *)__pyx_n_s__iteritems), (&__pyx_t_25), (&__pyx_t_6)); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1142; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1120
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+                __pyx_t_15 = PyObject_GetAttr(__pyx_cur_scope->__pyx_v_alslist, __pyx_n_s__iteritems); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_9 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_9 = PyDict_New(); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_7 = __Pyx_CyFunction_NewEx(&__pyx_mdef_3_sa_23HieroCachingRuleFactory_5input_1lambda6, 0, NULL, __pyx_n_s___sa, NULL); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_7 = PyObject_Call(__pyx_builtin_max, ((PyObject *)__pyx_t_15), ((PyObject *)__pyx_t_9)); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49393,7 +49755,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49406,14 +49768,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                  __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_9 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_7); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49421,7 +49783,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_18(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -49429,7 +49791,7 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1121
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-                __pyx_t_7 = __Pyx_GetName(__pyx_m, __pyx_n_s__itertools); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_15 = PyObject_GetAttr(__pyx_t_7, __pyx_n_s__chain); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_9 = PyObject_Call(__pyx_t_7, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_9)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1144; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1122
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1123
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1146
  *                                     locs = tuple(itertools.chain.from_iterable(alslist.itervalues()))
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1124
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  *                                     count = len(locs)
  *                                     scores = self.scorer.score(FeatureContext(
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-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1125
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1148
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  *                                                (k,i+spanlen), locs, input_match,             # <<<<<<<<<<<<<<
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- *                                                meta))             # <<<<<<<<<<<<<<
- *                                     yield Rule(self.category, f, e, scores, alignment)
- * 
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1152
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+ *                                     # Phrase pair processed
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  */
-                __pyx_t_16 = PyTuple_New(12); if (unlikely(!__pyx_t_16)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1134
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1162
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  *                     if not is_shadow_path:             # <<<<<<<<<<<<<<
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+        __pyx_t_8 = __Pyx_PyObject_IsTrue(__pyx_cur_scope->__pyx_v_is_shadow_path); if (unlikely(__pyx_t_8 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1162; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1135
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1163
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  *                     if not is_shadow_path:
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@@ -49825,18 +50237,18 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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  */
           __pyx_cur_scope->__pyx_v_num_subpatterns = (__pyx_cur_scope->__pyx_v_num_subpatterns + 1);
-          goto __pyx_L64;
+          goto __pyx_L65;
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-        __pyx_L64:;
+        __pyx_L65:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1136
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1164
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1137
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1138
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-          __pyx_t_2 = 0;
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@@ -49913,14 +50325,14 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1141
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@@ -49928,92 +50340,92 @@ static PyObject *__pyx_gb_3_sa_23HieroCachingRuleFactory_24generator4(__pyx_Gene
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1142
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1170
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1143
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1145
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1173
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-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1146
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1148
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1174
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1182
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1183
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1184
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1185
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1186
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1187
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  *         if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -50475,7 +51392,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   __pyx_t_5 = (((__pyx_v_e_high[0]) - (__pyx_v_e_low[0])) > __pyx_v_max_e_len);
   if (__pyx_t_5) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1190
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
  * 
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0             # <<<<<<<<<<<<<<
@@ -50487,7 +51404,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     goto __pyx_L6;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1191
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1241
  *         if e_high[0] - e_low[0] > max_e_len:
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:             # <<<<<<<<<<<<<<
@@ -50503,7 +51420,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   if (__pyx_t_4) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1192
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
  *             return 0
  *         elif e_in_high != -1 and e_high[0] != e_in_high:
  *             if e_high[0] - e_in_high < min_ex_size:             # <<<<<<<<<<<<<<
@@ -50513,7 +51430,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = (((__pyx_v_e_high[0]) - __pyx_v_e_in_high) < __pyx_v_min_ex_size);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1193
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1243
  *         elif e_in_high != -1 and e_high[0] != e_in_high:
  *             if e_high[0] - e_in_high < min_ex_size:
  *                 e_high[0] = e_in_high + min_ex_size             # <<<<<<<<<<<<<<
@@ -50522,7 +51439,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
       (__pyx_v_e_high[0]) = (__pyx_v_e_in_high + __pyx_v_min_ex_size);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1194
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1244
  *             if e_high[0] - e_in_high < min_ex_size:
  *                 e_high[0] = e_in_high + min_ex_size
  *                 if e_high[0] > e_sent_len:             # <<<<<<<<<<<<<<
@@ -50532,7 +51449,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = ((__pyx_v_e_high[0]) > __pyx_v_e_sent_len);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1195
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1245
  *                 e_high[0] = e_in_high + min_ex_size
  *                 if e_high[0] > e_sent_len:
  *                     return 0             # <<<<<<<<<<<<<<
@@ -50551,7 +51468,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   }
   __pyx_L6:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1197
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
  *                     return 0
  * 
  *         f_back_low[0] = -1             # <<<<<<<<<<<<<<
@@ -50560,7 +51477,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_f_back_low[0]) = -1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1198
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1248
  * 
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1             # <<<<<<<<<<<<<<
@@ -50569,7 +51486,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   (__pyx_v_f_back_high[0]) = -1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1199
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1249
  *         f_back_low[0] = -1
  *         f_back_high[0] = -1
  *         f_low_prev = f_low             # <<<<<<<<<<<<<<
@@ -50578,17 +51495,17 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_f_low_prev = __pyx_v_f_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1200
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1250
  *         f_back_high[0] = -1
  *         f_low_prev = f_low
  *         f_high_prev = f_high             # <<<<<<<<<<<<<<
  *         new_x = 0
  *         new_low_x = 0
  */
-  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1200; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1250; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_v_f_high_prev = __pyx_t_1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1201
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
  *         f_low_prev = f_low
  *         f_high_prev = f_high
  *         new_x = 0             # <<<<<<<<<<<<<<
@@ -50597,7 +51514,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1202
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1252
  *         f_high_prev = f_high
  *         new_x = 0
  *         new_low_x = 0             # <<<<<<<<<<<<<<
@@ -50606,7 +51523,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_low_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1203
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1253
  *         new_x = 0
  *         new_low_x = 0
  *         new_high_x = 0             # <<<<<<<<<<<<<<
@@ -50615,7 +51532,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
   __pyx_v_new_high_x = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1205
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1255
  *         new_high_x = 0
  * 
  *         while True:             # <<<<<<<<<<<<<<
@@ -50625,7 +51542,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   while (1) {
     if (!1) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1207
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
  *         while True:
  * 
  *             if f_back_low[0] == -1:             # <<<<<<<<<<<<<<
@@ -50635,45 +51552,45 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = ((__pyx_v_f_back_low[0]) == -1);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1208
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1258
  * 
  *             if f_back_low[0] == -1:
  *                 self.find_projection(e_low[0], e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1208; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1258; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       goto __pyx_L11;
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1210
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1260
  *                 self.find_projection(e_low[0], e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  * 
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), __pyx_v_e_low_prev, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1210; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_e_low[0]), __pyx_v_e_low_prev, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1260; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1211
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1261
  *             else:
  *                 self.find_projection(e_low[0], e_low_prev, e_links_low, e_links_high, f_back_low, f_back_high)
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)             # <<<<<<<<<<<<<<
  * 
  *             if f_back_low[0] > f_low:
  */
-      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_e_high_prev, (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1211; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_e_high_prev, (__pyx_v_e_high[0]), __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_f_back_low, __pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1261; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
     }
     __pyx_L11:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1213
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1263
  *                 self.find_projection(e_high_prev, e_high[0], e_links_low, e_links_high, f_back_low, f_back_high)
  * 
  *             if f_back_low[0] > f_low:             # <<<<<<<<<<<<<<
@@ -50683,7 +51600,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = ((__pyx_v_f_back_low[0]) > __pyx_v_f_low);
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1214
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
  * 
  *             if f_back_low[0] > f_low:
  *                 f_back_low[0] = f_low             # <<<<<<<<<<<<<<
@@ -50695,35 +51612,35 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L12:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1216
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1266
  *                 f_back_low[0] = f_low
  * 
  *             if f_back_high[0] < f_high:             # <<<<<<<<<<<<<<
  *                 f_back_high[0] = f_high
  * 
  */
-    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1266; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_6 = PyObject_RichCompare(__pyx_t_2, __pyx_v_f_high, Py_LT); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_RichCompare(__pyx_t_2, __pyx_v_f_high, Py_LT); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1266; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1216; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1266; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1217
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1267
  * 
  *             if f_back_high[0] < f_high:
  *                 f_back_high[0] = f_high             # <<<<<<<<<<<<<<
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:
  */
-      __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1217; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_v_f_high); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1267; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       (__pyx_v_f_back_high[0]) = __pyx_t_1;
       goto __pyx_L13;
     }
     __pyx_L13:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1219
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1269
  *                 f_back_high[0] = f_high
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:             # <<<<<<<<<<<<<<
@@ -50739,7 +51656,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1220
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1270
  * 
  *             if f_back_low[0] == f_low_prev and f_back_high[0] == f_high_prev:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -50752,7 +51669,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1222
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1272
  *                 return 1
  * 
  *             if allow_low_x == 0 and f_back_low[0] < f_low:             # <<<<<<<<<<<<<<
@@ -50768,7 +51685,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1224
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1274
  *             if allow_low_x == 0 and f_back_low[0] < f_low:
  *                 # FAIL: f phrase is not tight
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50781,7 +51698,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1226
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1276
  *                 return 0
  * 
  *             if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50791,7 +51708,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_5 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1228
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
  *             if f_back_high[0] - f_back_low[0] > max_f_len:
  *                 # FAIL: f back projection is too wide
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50804,7 +51721,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1230
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1280
  *                 return 0
  * 
  *             if allow_high_x == 0 and f_back_high[0] > f_high:             # <<<<<<<<<<<<<<
@@ -50813,11 +51730,11 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_t_5 = (__pyx_v_allow_high_x == 0);
     if (__pyx_t_5) {
-      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1280; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_2 = PyObject_RichCompare(__pyx_t_6, __pyx_v_f_high, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyObject_RichCompare(__pyx_t_6, __pyx_v_f_high, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1280; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1230; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_2); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1280; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -50825,7 +51742,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1232
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1282
  *             if allow_high_x == 0 and f_back_high[0] > f_high:
  *                 # FAIL: extension on high side not allowed
  *                 return 0             # <<<<<<<<<<<<<<
@@ -50838,7 +51755,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1234
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1284
  *                 return 0
  * 
  *             if f_low != f_back_low[0]:             # <<<<<<<<<<<<<<
@@ -50848,7 +51765,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_4 = (__pyx_v_f_low != (__pyx_v_f_back_low[0]));
     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1235
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1285
  * 
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:             # <<<<<<<<<<<<<<
@@ -50858,7 +51775,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_new_low_x == 0);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1236
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1286
  *             if f_low != f_back_low[0]:
  *                 if new_low_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -50868,7 +51785,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (__pyx_v_new_x >= __pyx_v_max_new_x);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1238
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1288
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on low side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50881,7 +51798,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1240
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1290
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -50890,7 +51807,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
           __pyx_v_new_x = (__pyx_v_new_x + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1241
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1291
  *                     else:
  *                         new_x = new_x + 1
  *                         new_low_x = 1             # <<<<<<<<<<<<<<
@@ -50904,7 +51821,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L19:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1242
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
  *                         new_x = new_x + 1
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:             # <<<<<<<<<<<<<<
@@ -50914,7 +51831,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = ((__pyx_v_f_low - (__pyx_v_f_back_low[0])) < __pyx_v_min_fx_size);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1243
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
  *                         new_low_x = 1
  *                 if f_low - f_back_low[0] < min_fx_size:
  *                     f_back_low[0] = f_low - min_fx_size             # <<<<<<<<<<<<<<
@@ -50923,7 +51840,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
         (__pyx_v_f_back_low[0]) = (__pyx_v_f_low - __pyx_v_min_fx_size);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1244
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1294
  *                 if f_low - f_back_low[0] < min_fx_size:
  *                     f_back_low[0] = f_low - min_fx_size
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -50933,7 +51850,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1246
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1296
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50946,7 +51863,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L22:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1247
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1297
  *                         # FAIL: extension required on low side violates max initial length
  *                         return 0
  *                     if f_back_low[0] < 0:             # <<<<<<<<<<<<<<
@@ -50956,7 +51873,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = ((__pyx_v_f_back_low[0]) < 0);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1249
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1299
  *                     if f_back_low[0] < 0:
  *                         # FAIL: extension required on low side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -50975,22 +51892,22 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L18:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1251
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1301
  *                         return 0
  * 
  *             if f_high != f_back_high[0]:             # <<<<<<<<<<<<<<
  *                 if new_high_x == 0:
  *                     if new_x >= max_new_x:
  */
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+    __pyx_t_2 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1301; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_6 = PyObject_RichCompare(__pyx_v_f_high, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = PyObject_RichCompare(__pyx_v_f_high, __pyx_t_2, Py_NE); __Pyx_XGOTREF(__pyx_t_6); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1301; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1251; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_6); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1301; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     if (__pyx_t_4) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1252
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1302
  * 
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:             # <<<<<<<<<<<<<<
@@ -51000,7 +51917,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_new_high_x == 0);
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1253
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1303
  *             if f_high != f_back_high[0]:
  *                 if new_high_x == 0:
  *                     if new_x >= max_new_x:             # <<<<<<<<<<<<<<
@@ -51010,7 +51927,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (__pyx_v_new_x >= __pyx_v_max_new_x);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1255
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
  *                     if new_x >= max_new_x:
  *                         # FAIL: extension required on high side violates max # of gaps
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51023,7 +51940,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         /*else*/ {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1257
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1307
  *                         return 0
  *                     else:
  *                         new_x = new_x + 1             # <<<<<<<<<<<<<<
@@ -51032,7 +51949,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
           __pyx_v_new_x = (__pyx_v_new_x + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1258
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1308
  *                     else:
  *                         new_x = new_x + 1
  *                         new_high_x = 1             # <<<<<<<<<<<<<<
@@ -51046,44 +51963,44 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
       }
       __pyx_L25:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1259
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1309
  *                         new_x = new_x + 1
  *                         new_high_x = 1
  *                 if f_back_high[0] - f_high < min_fx_size:             # <<<<<<<<<<<<<<
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  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  */
-      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1259; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = PyInt_FromLong((__pyx_v_f_back_high[0])); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1309; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_2 = PyNumber_Subtract(__pyx_t_6, __pyx_v_f_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1309; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_6 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1309; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_7 = PyObject_RichCompare(__pyx_t_2, __pyx_t_6, Py_LT); __Pyx_XGOTREF(__pyx_t_7); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1309; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+      __pyx_t_4 = __Pyx_PyObject_IsTrue(__pyx_t_7); if (unlikely(__pyx_t_4 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1309; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1260
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1310
  *                         new_high_x = 1
  *                 if f_back_high[0] - f_high < min_fx_size:
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  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on high side violates max initial length
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+        __pyx_t_7 = PyInt_FromLong(__pyx_v_min_fx_size); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1310; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+        __pyx_t_6 = PyNumber_Add(__pyx_v_f_high, __pyx_t_7); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1310; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_t_6); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1260; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_PyInt_AsInt(__pyx_t_6); if (unlikely((__pyx_t_1 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1310; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         (__pyx_v_f_back_high[0]) = __pyx_t_1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1261
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1311
  *                 if f_back_high[0] - f_high < min_fx_size:
  *                     f_back_high[0] = f_high + min_fx_size
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:             # <<<<<<<<<<<<<<
@@ -51093,7 +52010,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = (((__pyx_v_f_back_high[0]) - (__pyx_v_f_back_low[0])) > __pyx_v_max_f_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1263
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1313
  *                     if f_back_high[0] - f_back_low[0] > max_f_len:
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51106,7 +52023,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         }
         __pyx_L28:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1264
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1314
  *                         # FAIL: extension required on high side violates max initial length
  *                         return 0
  *                     if f_back_high[0] > f_sent_len:             # <<<<<<<<<<<<<<
@@ -51116,7 +52033,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
         __pyx_t_4 = ((__pyx_v_f_back_high[0]) > __pyx_v_f_sent_len);
         if (__pyx_t_4) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1266
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1316
  *                     if f_back_high[0] > f_sent_len:
  *                         # FAIL: extension required on high side violates sentence boundary
  *                         return 0             # <<<<<<<<<<<<<<
@@ -51135,7 +52052,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L24:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1268
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1318
  *                         return 0
  * 
  *             e_low_prev = e_low[0]             # <<<<<<<<<<<<<<
@@ -51144,7 +52061,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_e_low_prev = (__pyx_v_e_low[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1269
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1319
  * 
  *             e_low_prev = e_low[0]
  *             e_high_prev = e_high[0]             # <<<<<<<<<<<<<<
@@ -51153,29 +52070,29 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_e_high_prev = (__pyx_v_e_high[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1271
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1321
  *             e_high_prev = e_high[0]
  * 
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  */
-    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_f_back_low[0]), __pyx_v_f_low_prev, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1271; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, (__pyx_v_f_back_low[0]), __pyx_v_f_low_prev, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1321; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1272
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1322
  * 
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1
  */
-    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_high_prev, (__pyx_v_f_back_high[0]), __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1272; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_6 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_projection(__pyx_v_self, __pyx_v_f_high_prev, (__pyx_v_f_back_high[0]), __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_low, __pyx_v_e_high); if (unlikely(!__pyx_t_6)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1322; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_6);
     __Pyx_DECREF(__pyx_t_6); __pyx_t_6 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1273
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1323
  *             self.find_projection(f_back_low[0], f_low_prev, f_links_low, f_links_high, e_low, e_high)
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:             # <<<<<<<<<<<<<<
@@ -51191,7 +52108,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1274
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1324
  *             self.find_projection(f_high_prev, f_back_high[0], f_links_low, f_links_high, e_low, e_high)
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1             # <<<<<<<<<<<<<<
@@ -51204,7 +52121,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L30:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1275
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1325
  *             if e_low[0] == e_low_prev and e_high[0] == e_high_prev:
  *                 return 1
  *             if allow_arbitrary_x == 0:             # <<<<<<<<<<<<<<
@@ -51214,7 +52131,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_3 = (__pyx_v_allow_arbitrary_x == 0);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1277
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1327
  *             if allow_arbitrary_x == 0:
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0             # <<<<<<<<<<<<<<
@@ -51227,7 +52144,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L31:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1278
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1328
  *                 # FAIL: arbitrary expansion not permitted
  *                 return 0
  *             if e_high[0] - e_low[0] > max_e_len:             # <<<<<<<<<<<<<<
@@ -51237,7 +52154,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     __pyx_t_3 = (((__pyx_v_e_high[0]) - (__pyx_v_e_low[0])) > __pyx_v_max_e_len);
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1280
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1330
  *             if e_high[0] - e_low[0] > max_e_len:
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0             # <<<<<<<<<<<<<<
@@ -51250,7 +52167,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
     }
     __pyx_L32:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1281
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
  *                 # FAIL: re-projection violates sentence max phrase length
  *                 return 0
  *             f_low_prev = f_back_low[0]             # <<<<<<<<<<<<<<
@@ -51259,7 +52176,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
  */
     __pyx_v_f_low_prev = (__pyx_v_f_back_low[0]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1282
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1332
  *                 return 0
  *             f_low_prev = f_back_low[0]
  *             f_high_prev = f_back_high[0]             # <<<<<<<<<<<<<<
@@ -51282,7 +52199,7 @@ static int __pyx_f_3_sa_23HieroCachingRuleFactory_find_fixpoint(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1285
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
  * 
  * 
  *     cdef find_projection(self, int in_low, int in_high, int* in_links_low, int* in_links_high,             # <<<<<<<<<<<<<<
@@ -51300,7 +52217,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   int __pyx_t_4;
   __Pyx_RefNannySetupContext("find_projection", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1288
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1338
  *                         int* out_low, int* out_high):
  *         cdef int i
  *         for i from in_low <= i < in_high:             # <<<<<<<<<<<<<<
@@ -51310,7 +52227,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   __pyx_t_1 = __pyx_v_in_high;
   for (__pyx_v_i = __pyx_v_in_low; __pyx_v_i < __pyx_t_1; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1289
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
  *         cdef int i
  *         for i from in_low <= i < in_high:
  *             if in_links_low[i] != -1:             # <<<<<<<<<<<<<<
@@ -51320,7 +52237,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
     __pyx_t_2 = ((__pyx_v_in_links_low[__pyx_v_i]) != -1);
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1290
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1340
  *         for i from in_low <= i < in_high:
  *             if in_links_low[i] != -1:
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:             # <<<<<<<<<<<<<<
@@ -51336,7 +52253,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_4) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1291
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1341
  *             if in_links_low[i] != -1:
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:
  *                     out_low[0] = in_links_low[i]             # <<<<<<<<<<<<<<
@@ -51348,7 +52265,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       __pyx_L6:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1292
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1342
  *                 if out_low[0] == -1 or in_links_low[i] < out_low[0]:
  *                     out_low[0] = in_links_low[i]
  *                 if out_high[0] == -1 or in_links_high[i] > out_high[0]:             # <<<<<<<<<<<<<<
@@ -51364,7 +52281,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
       }
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1293
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1343
  *                     out_low[0] = in_links_low[i]
  *                 if out_high[0] == -1 or in_links_high[i] > out_high[0]:
  *                     out_high[0] = in_links_high[i]             # <<<<<<<<<<<<<<
@@ -51386,7 +52303,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_find_projection(CYTHON_U
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1296
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
  * 
  * 
  *     cdef int* int_arr_extend(self, int* arr, int* arr_len, int* data, int data_len):             # <<<<<<<<<<<<<<
@@ -51400,7 +52317,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
   __Pyx_RefNannyDeclarations
   __Pyx_RefNannySetupContext("int_arr_extend", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1298
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1348
  *     cdef int* int_arr_extend(self, int* arr, int* arr_len, int* data, int data_len):
  *         cdef int new_len
  *         new_len = arr_len[0] + data_len             # <<<<<<<<<<<<<<
@@ -51409,7 +52326,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   __pyx_v_new_len = ((__pyx_v_arr_len[0]) + __pyx_v_data_len);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1299
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1349
  *         cdef int new_len
  *         new_len = arr_len[0] + data_len
  *         arr = <int*> realloc(arr, new_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -51418,7 +52335,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   __pyx_v_arr = ((int *)realloc(__pyx_v_arr, (__pyx_v_new_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1300
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1350
  *         new_len = arr_len[0] + data_len
  *         arr = <int*> realloc(arr, new_len*sizeof(int))
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -51427,7 +52344,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   memcpy((__pyx_v_arr + (__pyx_v_arr_len[0])), __pyx_v_data, (__pyx_v_data_len * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1301
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
  *         arr = <int*> realloc(arr, new_len*sizeof(int))
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len             # <<<<<<<<<<<<<<
@@ -51436,7 +52353,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
  */
   (__pyx_v_arr_len[0]) = __pyx_v_new_len;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1302
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1352
  *         memcpy(arr+arr_len[0], data, data_len*sizeof(int))
  *         arr_len[0] = new_len
  *         return arr             # <<<<<<<<<<<<<<
@@ -51452,7 +52369,7 @@ static int *__pyx_f_3_sa_23HieroCachingRuleFactory_int_arr_extend(CYTHON_UNUSED
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1305
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
  * 
  * 
  *     cdef extract_phrases(self, int e_low, int e_high, int* e_gap_low, int* e_gap_high, int* e_links_low, int num_gaps,             # <<<<<<<<<<<<<<
@@ -51498,19 +52415,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("extract_phrases", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1313
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1363
  *         cdef result
  * 
  *         result = []             # <<<<<<<<<<<<<<
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1313; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1363; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_result = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1314
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1364
  * 
  *         result = []
  *         len1 = 0             # <<<<<<<<<<<<<<
@@ -51519,7 +52436,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1315
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1365
  *         result = []
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51528,19 +52445,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps1 = ((int *)malloc(0));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1316
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1366
  *         len1 = 0
  *         e_gaps1 = <int*> malloc(0)
  *         ephr_arr = IntList()             # <<<<<<<<<<<<<<
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1316; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1366; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_ephr_arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1318
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1368
  *         ephr_arr = IntList()
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))             # <<<<<<<<<<<<<<
@@ -51549,7 +52466,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gap_order = ((int *)malloc((__pyx_v_num_gaps * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1319
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1369
  * 
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:             # <<<<<<<<<<<<<<
@@ -51559,7 +52476,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_2 = (__pyx_v_num_gaps > 0);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1320
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1370
  *         e_gap_order = <int*> malloc(num_gaps*sizeof(int))
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0             # <<<<<<<<<<<<<<
@@ -51568,7 +52485,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     (__pyx_v_e_gap_order[0]) = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1321
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1371
  *         if num_gaps > 0:
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -51578,7 +52495,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_3 = __pyx_v_num_gaps;
     for (__pyx_v_i = 1; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1322
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1372
  *             e_gap_order[0] = 0
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:             # <<<<<<<<<<<<<<
@@ -51588,7 +52505,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_4 = __pyx_v_i;
       for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1323
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
  *             for i from 1 <= i < num_gaps:
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51598,7 +52515,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_t_2 = ((__pyx_v_e_gap_low[__pyx_v_i]) < (__pyx_v_e_gap_low[__pyx_v_j]));
         if (__pyx_t_2) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1324
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1374
  *                 for j from 0 <= j < i:
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:             # <<<<<<<<<<<<<<
@@ -51608,7 +52525,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
           __pyx_t_5 = __pyx_v_i;
           for (__pyx_v_k = __pyx_v_j; __pyx_v_k < __pyx_t_5; __pyx_v_k++) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1325
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
  *                     if e_gap_low[i] < e_gap_low[j]:
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]             # <<<<<<<<<<<<<<
@@ -51618,7 +52535,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
             (__pyx_v_e_gap_order[(__pyx_v_k + 1)]) = (__pyx_v_e_gap_order[__pyx_v_k]);
           }
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1326
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1376
  *                         for k from j <= k < i:
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i             # <<<<<<<<<<<<<<
@@ -51627,7 +52544,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
           (__pyx_v_e_gap_order[__pyx_v_j]) = __pyx_v_i;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1327
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
  *                             e_gap_order[k+1] = e_gap_order[k]
  *                         e_gap_order[j] = i
  *                         break             # <<<<<<<<<<<<<<
@@ -51641,7 +52558,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1329
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
  *                         break
  *                 else:
  *                     e_gap_order[i] = i             # <<<<<<<<<<<<<<
@@ -51656,7 +52573,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L3:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1331
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
  *                     e_gap_order[i] = i
  * 
  *         e_x_low = e_low             # <<<<<<<<<<<<<<
@@ -51665,7 +52582,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_x_low = __pyx_v_e_low;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1332
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1382
  * 
  *         e_x_low = e_low
  *         e_x_high = e_high             # <<<<<<<<<<<<<<
@@ -51674,7 +52591,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_x_high = __pyx_v_e_high;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1333
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1383
  *         e_x_low = e_low
  *         e_x_high = e_high
  *         if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51684,7 +52601,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_2 = (!__pyx_v_self->tight_phrases);
   if (__pyx_t_2) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1334
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1384
  *         e_x_high = e_high
  *         if not self.tight_phrases:
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -51707,7 +52624,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1335
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1385
  *         if not self.tight_phrases:
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:
  *                 e_x_low = e_x_low - 1             # <<<<<<<<<<<<<<
@@ -51717,7 +52634,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_v_e_x_low = (__pyx_v_e_x_low - 1);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1336
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1386
  *             while e_x_low > 0 and e_high - e_x_low < self.train_max_initial_size and e_links_low[e_x_low-1] == -1:
  *                 e_x_low = e_x_low - 1
  *             while e_x_high < e_sent_len and e_x_high - e_low < self.train_max_initial_size and e_links_low[e_x_high] == -1:             # <<<<<<<<<<<<<<
@@ -51740,7 +52657,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (!__pyx_t_2) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1337
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
  *                 e_x_low = e_x_low - 1
  *             while e_x_high < e_sent_len and e_x_high - e_low < self.train_max_initial_size and e_links_low[e_x_high] == -1:
  *                 e_x_high = e_x_high + 1             # <<<<<<<<<<<<<<
@@ -51753,7 +52670,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   }
   __pyx_L11:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1339
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1389
  *                 e_x_high = e_x_high + 1
  * 
  *         for i from e_x_low <= i <= e_low:             # <<<<<<<<<<<<<<
@@ -51763,7 +52680,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_e_low;
   for (__pyx_v_i = __pyx_v_e_x_low; __pyx_v_i <= __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1340
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
  * 
  *         for i from e_x_low <= i <= e_low:
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)             # <<<<<<<<<<<<<<
@@ -51773,7 +52690,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_v_e_gaps1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps1, (&__pyx_v_len1), (&__pyx_v_i), 1);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1342
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1392
  *             e_gaps1 = self.int_arr_extend(e_gaps1, &len1, &i, 1)
  * 
  *         for i from 0 <= i < num_gaps:             # <<<<<<<<<<<<<<
@@ -51783,7 +52700,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_num_gaps;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1343
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1393
  * 
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -51792,7 +52709,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_gaps2 = ((int *)malloc(0));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1344
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
  *         for i from 0 <= i < num_gaps:
  *             e_gaps2 = <int*> malloc(0)
  *             len2 = 0             # <<<<<<<<<<<<<<
@@ -51801,7 +52718,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_len2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1346
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1396
  *             len2 = 0
  * 
  *             j = e_gap_order[i]             # <<<<<<<<<<<<<<
@@ -51810,7 +52727,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_j = (__pyx_v_e_gap_order[__pyx_v_i]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1347
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1397
  * 
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]             # <<<<<<<<<<<<<<
@@ -51819,7 +52736,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_x_gap_low = (__pyx_v_e_gap_low[__pyx_v_j]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1348
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1398
  *             j = e_gap_order[i]
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]             # <<<<<<<<<<<<<<
@@ -51828,7 +52745,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_x_gap_high = (__pyx_v_e_gap_high[__pyx_v_j]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1349
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1399
  *             e_x_gap_low = e_gap_low[j]
  *             e_x_gap_high = e_gap_high[j]
  *             if not self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -51838,7 +52755,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_2 = (!__pyx_v_self->tight_phrases);
     if (__pyx_t_2) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1350
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
  *             e_x_gap_high = e_gap_high[j]
  *             if not self.tight_phrases:
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -51855,7 +52772,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_7) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1351
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1401
  *             if not self.tight_phrases:
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:
  *                     e_x_gap_low = e_x_gap_low - 1             # <<<<<<<<<<<<<<
@@ -51865,7 +52782,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_v_e_x_gap_low = (__pyx_v_e_x_gap_low - 1);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1352
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
  *                 while e_x_gap_low > e_x_low and e_links_low[e_x_gap_low-1] == -1:
  *                     e_x_gap_low = e_x_gap_low - 1
  *                 while e_x_gap_high < e_x_high and e_links_low[e_x_gap_high] == -1:             # <<<<<<<<<<<<<<
@@ -51882,7 +52799,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         }
         if (!__pyx_t_6) break;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1353
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1403
  *                     e_x_gap_low = e_x_gap_low - 1
  *                 while e_x_gap_high < e_x_high and e_links_low[e_x_gap_high] == -1:
  *                     e_x_gap_high = e_x_gap_high + 1             # <<<<<<<<<<<<<<
@@ -51895,7 +52812,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
     __pyx_L20:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1355
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1405
  *                     e_x_gap_high = e_x_gap_high + 1
  * 
  *             k = 0             # <<<<<<<<<<<<<<
@@ -51904,7 +52821,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_k = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1356
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1406
  * 
  *             k = 0
  *             step = 1+(i*2)             # <<<<<<<<<<<<<<
@@ -51913,7 +52830,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_step = (1 + (__pyx_v_i * 2));
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1357
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1407
  *             k = 0
  *             step = 1+(i*2)
  *             while k < len1:             # <<<<<<<<<<<<<<
@@ -51924,7 +52841,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_6 = (__pyx_v_k < __pyx_v_len1);
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1358
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1408
  *             step = 1+(i*2)
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:             # <<<<<<<<<<<<<<
@@ -51934,7 +52851,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_4 = (__pyx_v_e_gap_low[__pyx_v_j]);
       for (__pyx_v_m = __pyx_v_e_x_gap_low; __pyx_v_m <= __pyx_t_4; __pyx_v_m++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1359
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1409
  *             while k < len1:
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:
  *                     if m >= e_gaps1[k+step-1]:             # <<<<<<<<<<<<<<
@@ -51944,7 +52861,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_t_6 = (__pyx_v_m >= (__pyx_v_e_gaps1[((__pyx_v_k + __pyx_v_step) - 1)]));
         if (__pyx_t_6) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1360
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1410
  *                 for m from e_x_gap_low <= m <= e_gap_low[j]:
  *                     if m >= e_gaps1[k+step-1]:
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:             # <<<<<<<<<<<<<<
@@ -51954,7 +52871,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
           __pyx_t_5 = __pyx_v_e_x_gap_high;
           for (__pyx_v_n = (__pyx_v_e_gap_high[__pyx_v_j]); __pyx_v_n <= __pyx_t_5; __pyx_v_n++) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1361
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1411
  *                     if m >= e_gaps1[k+step-1]:
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length             # <<<<<<<<<<<<<<
@@ -51964,7 +52881,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
             __pyx_t_6 = ((__pyx_v_n - __pyx_v_m) >= 1);
             if (__pyx_t_6) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1362
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1412
  *                         for n from e_gap_high[j] <= n <= e_x_gap_high:
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)             # <<<<<<<<<<<<<<
@@ -51973,7 +52890,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
               __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (__pyx_v_e_gaps1 + __pyx_v_k), __pyx_v_step);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1363
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1413
  *                             if n-m >= 1:    # extractor.py doesn't restrict target-side gap length
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)             # <<<<<<<<<<<<<<
@@ -51982,7 +52899,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
               __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (&__pyx_v_m), 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1364
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1414
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+k, step)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)             # <<<<<<<<<<<<<<
@@ -51999,7 +52916,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
         __pyx_L29:;
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1365
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1415
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &m, 1)
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)
  *                 k = k + step             # <<<<<<<<<<<<<<
@@ -52009,7 +52926,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_v_k = (__pyx_v_k + __pyx_v_step);
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1366
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1416
  *                                 e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &n, 1)
  *                 k = k + step
  *             free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -52018,7 +52935,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     free(__pyx_v_e_gaps1);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1367
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1417
  *                 k = k + step
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -52027,7 +52944,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_e_gaps1 = __pyx_v_e_gaps2;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1368
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1418
  *             free(e_gaps1)
  *             e_gaps1 = e_gaps2
  *             len1 = len2             # <<<<<<<<<<<<<<
@@ -52037,7 +52954,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_v_len1 = __pyx_v_len2;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1370
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1420
  *             len1 = len2
  * 
  *         step = 1+(num_gaps*2)             # <<<<<<<<<<<<<<
@@ -52046,7 +52963,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_step = (1 + (__pyx_v_num_gaps * 2));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1371
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1421
  * 
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)             # <<<<<<<<<<<<<<
@@ -52055,7 +52972,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps2 = ((int *)malloc(0));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1372
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1422
  *         step = 1+(num_gaps*2)
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0             # <<<<<<<<<<<<<<
@@ -52064,7 +52981,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1373
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1423
  *         e_gaps2 = <int*> malloc(0)
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:             # <<<<<<<<<<<<<<
@@ -52074,7 +52991,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
   __pyx_t_3 = __pyx_v_e_x_high;
   for (__pyx_v_i = __pyx_v_e_high; __pyx_v_i <= __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1374
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1424
  *         len2 = 0
  *         for i from e_high <= i <= e_x_high:
  *             j = 0             # <<<<<<<<<<<<<<
@@ -52083,7 +53000,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_j = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1375
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1425
  *         for i from e_high <= i <= e_x_high:
  *             j = 0
  *             while j < len1:             # <<<<<<<<<<<<<<
@@ -52094,7 +53011,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_6 = (__pyx_v_j < __pyx_v_len1);
       if (!__pyx_t_6) break;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1376
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1426
  *             j = 0
  *             while j < len1:
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:             # <<<<<<<<<<<<<<
@@ -52110,7 +53027,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1377
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1427
  *             while j < len1:
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)             # <<<<<<<<<<<<<<
@@ -52119,7 +53036,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
         __pyx_v_e_gaps2 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->int_arr_extend(__pyx_v_self, __pyx_v_e_gaps2, (&__pyx_v_len2), (__pyx_v_e_gaps1 + __pyx_v_j), __pyx_v_step);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1378
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1428
  *                 if i - e_gaps1[j] <= self.train_max_initial_size and i >= e_gaps1[j+step-1]:
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)             # <<<<<<<<<<<<<<
@@ -52131,7 +53048,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L37:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1379
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1429
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, e_gaps1+j, step)
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)
  *                 j = j + step             # <<<<<<<<<<<<<<
@@ -52142,7 +53059,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1380
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1430
  *                     e_gaps2 = self.int_arr_extend(e_gaps2, &len2, &i, 1)
  *                 j = j + step
  *         free(e_gaps1)             # <<<<<<<<<<<<<<
@@ -52151,7 +53068,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   free(__pyx_v_e_gaps1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1381
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1431
  *                 j = j + step
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2             # <<<<<<<<<<<<<<
@@ -52160,7 +53077,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_e_gaps1 = __pyx_v_e_gaps2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1382
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1432
  *         free(e_gaps1)
  *         e_gaps1 = e_gaps2
  *         len1 = len2             # <<<<<<<<<<<<<<
@@ -52169,7 +53086,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_len1 = __pyx_v_len2;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1384
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1434
  *         len1 = len2
  * 
  *         step = (num_gaps+1)*2             # <<<<<<<<<<<<<<
@@ -52178,7 +53095,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_step = ((__pyx_v_num_gaps + 1) * 2);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1385
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1435
  * 
  *         step = (num_gaps+1)*2
  *         i = 0             # <<<<<<<<<<<<<<
@@ -52187,7 +53104,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1387
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1437
  *         i = 0
  * 
  *         while i < len1:             # <<<<<<<<<<<<<<
@@ -52198,7 +53115,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_2 = (__pyx_v_i < __pyx_v_len1);
     if (!__pyx_t_2) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1388
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1438
  * 
  *         while i < len1:
  *             ephr_arr._clear()             # <<<<<<<<<<<<<<
@@ -52207,7 +53124,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_ephr_arr->__pyx_vtab)->_clear(__pyx_v_ephr_arr);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1389
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1439
  *         while i < len1:
  *             ephr_arr._clear()
  *             num_chunks = 0             # <<<<<<<<<<<<<<
@@ -52216,20 +53133,20 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_num_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1390
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1440
  *             ephr_arr._clear()
  *             num_chunks = 0
  *             indexes = []             # <<<<<<<<<<<<<<
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  */
-    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1390; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1440; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
     __Pyx_XDECREF(((PyObject *)__pyx_v_indexes));
     __pyx_v_indexes = __pyx_t_1;
     __pyx_t_1 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1391
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1441
  *             num_chunks = 0
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:             # <<<<<<<<<<<<<<
@@ -52239,7 +53156,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     __pyx_t_9 = (__pyx_v_num_gaps + 1);
     for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_9; __pyx_v_j++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1392
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1442
  *             indexes = []
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:             # <<<<<<<<<<<<<<
@@ -52249,7 +53166,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_2 = ((__pyx_v_e_gaps1[(__pyx_v_i + (2 * __pyx_v_j))]) < (__pyx_v_e_gaps1[((__pyx_v_i + (2 * __pyx_v_j)) + 1)]));
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1393
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1443
  *             for j from 0 <= j < num_gaps+1:
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  *                     num_chunks = num_chunks + 1             # <<<<<<<<<<<<<<
@@ -52261,7 +53178,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1394
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1444
  *                 if e_gaps1[i+2*j] < e_gaps1[i+(2*j)+1]:
  *                     num_chunks = num_chunks + 1
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:             # <<<<<<<<<<<<<<
@@ -52271,19 +53188,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_3 = (__pyx_v_e_gaps1[((__pyx_v_i + (2 * __pyx_v_j)) + 1)]);
       for (__pyx_v_k = (__pyx_v_e_gaps1[(__pyx_v_i + (2 * __pyx_v_j))]); __pyx_v_k < __pyx_t_3; __pyx_v_k++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1395
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1445
  *                     num_chunks = num_chunks + 1
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:
  *                     indexes.append(k)             # <<<<<<<<<<<<<<
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:
  */
-        __pyx_t_1 = PyInt_FromLong(__pyx_v_k); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyInt_FromLong(__pyx_v_k); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1445; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1395; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1445; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1396
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1446
  *                 for k from e_gaps1[i+2*j] <= k < e_gaps1[i+(2*j)+1]:
  *                     indexes.append(k)
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])             # <<<<<<<<<<<<<<
@@ -52291,14 +53208,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  */
         __pyx_t_4 = (__pyx_v_self->eda->data->arr[(__pyx_v_e_sent_start + __pyx_v_k)]);
-        __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_self->eid2symid), __pyx_t_4, sizeof(int), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = __Pyx_GetItemInt(((PyObject *)__pyx_v_self->eid2symid), __pyx_t_4, sizeof(int), PyInt_FromLong); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1396; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = __Pyx_PyInt_AsInt(__pyx_t_1); if (unlikely((__pyx_t_4 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1446; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_ephr_arr->__pyx_vtab)->_append(__pyx_v_ephr_arr, __pyx_t_4);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1397
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1447
  *                     indexes.append(k)
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:             # <<<<<<<<<<<<<<
@@ -52308,19 +53225,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_t_2 = (__pyx_v_j < __pyx_v_num_gaps);
       if (__pyx_t_2) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1398
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1448
  *                     ephr_arr._append(self.eid2symid[self.eda.data.arr[e_sent_start+k]])
  *                 if j < num_gaps:
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))             # <<<<<<<<<<<<<<
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step
  */
-        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, ((__pyx_v_e_gap_order[__pyx_v_j]) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, ((__pyx_v_e_gap_order[__pyx_v_j]) + 1))); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1398; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyList_Append(__pyx_v_indexes, __pyx_t_1); if (unlikely(__pyx_t_10 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1399
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1449
  *                 if j < num_gaps:
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))             # <<<<<<<<<<<<<<
@@ -52333,7 +53250,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
       __pyx_L45:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1400
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1450
  *                     indexes.append(sym_setindex(self.category, e_gap_order[j]+1))
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step             # <<<<<<<<<<<<<<
@@ -52342,7 +53259,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
  */
     __pyx_v_i = (__pyx_v_i + __pyx_v_step);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1401
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1451
  *                     ephr_arr._append(sym_setindex(self.category, e_gap_order[j]+1))
  *             i = i + step
  *             if ephr_arr.len <= self.max_target_length and num_chunks <= self.max_target_chunks:             # <<<<<<<<<<<<<<
@@ -52358,22 +53275,22 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases(struct _
     }
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1402
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1404
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1417
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+        __pyx_t_5 = PyInt_FromLong((__pyx_v_i * 65536)); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        __pyx_t_7 = PyNumber_Add(__pyx_t_5, __pyx_v_j); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = PyNumber_Add(__pyx_t_5, __pyx_v_j); if (unlikely(!__pyx_t_7)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_7);
         __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-        __pyx_t_5 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_ret), __pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1419; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_5 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_ret), __pyx_t_7); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1469; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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         __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
@@ -52615,14 +53532,14 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
       }
       __pyx_L8:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1420
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1470
  *                     j = eindexes.index(sent_links[idx+1])
  *                     ret.append(i*65536+j)
  *                 idx += 2             # <<<<<<<<<<<<<<
  *         return ret
  * 
  */
-      __pyx_t_5 = PyNumber_InPlaceAdd(__pyx_v_idx, __pyx_int_2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1420; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_5 = PyNumber_InPlaceAdd(__pyx_v_idx, __pyx_int_2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1470; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_5);
       __Pyx_DECREF(__pyx_v_idx);
       __pyx_v_idx = __pyx_t_5;
@@ -52631,7 +53548,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
     __pyx_L3_continue:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1421
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1471
  *                     ret.append(i*65536+j)
  *                 idx += 2
  *         return ret             # <<<<<<<<<<<<<<
@@ -52661,7 +53578,7 @@ static struct __pyx_obj_3_sa_IntList *__pyx_f_3_sa_23HieroCachingRuleFactory_cre
   return __pyx_r;
 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1423
+/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1473
  *         return ret
  * 
  *     cdef extract(self, Phrase phrase, Matching* matching, int* chunklen, int num_chunks):             # <<<<<<<<<<<<<<
@@ -52755,19 +53672,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   int __pyx_clineno = 0;
   __Pyx_RefNannySetupContext("extract", 0);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1436
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1486
  *         cdef reason_for_failure
  * 
  *         fphr_arr = IntList()             # <<<<<<<<<<<<<<
  *         phrase_len = phrase.n
  *         extracts = []
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1436; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_IntList)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1486; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_fphr_arr = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1437
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1487
  * 
  *         fphr_arr = IntList()
  *         phrase_len = phrase.n             # <<<<<<<<<<<<<<
@@ -52776,19 +53693,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_phrase_len = __pyx_v_phrase->n;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1438
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1488
  *         fphr_arr = IntList()
  *         phrase_len = phrase.n
  *         extracts = []             # <<<<<<<<<<<<<<
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)
  * 
  */
-  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1438; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1488; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
   __pyx_v_extracts = ((PyObject *)__pyx_t_1);
   __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1439
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1489
  *         phrase_len = phrase.n
  *         extracts = []
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)             # <<<<<<<<<<<<<<
@@ -52797,7 +53714,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_sent_links = ((struct __pyx_vtabstruct_3_sa_Alignment *)__pyx_v_self->alignment->__pyx_vtab)->_get_sent_links(__pyx_v_self->alignment, __pyx_v_matching->sent_id, (&__pyx_v_num_links));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1441
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
  *         sent_links = self.alignment._get_sent_links(matching.sent_id, &num_links)
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]             # <<<<<<<<<<<<<<
@@ -52806,7 +53723,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_start = (__pyx_v_self->eda->sent_index->arr[__pyx_v_matching->sent_id]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1442
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
  * 
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]             # <<<<<<<<<<<<<<
@@ -52815,7 +53732,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_end = (__pyx_v_self->eda->sent_index->arr[(__pyx_v_matching->sent_id + 1)]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1443
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
  *         e_sent_start = self.eda.sent_index.arr[matching.sent_id]
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]
  *         e_sent_len = e_sent_end - e_sent_start - 1             # <<<<<<<<<<<<<<
@@ -52824,7 +53741,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_sent_len = ((__pyx_v_e_sent_end - __pyx_v_e_sent_start) - 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1444
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
  *         e_sent_end = self.eda.sent_index.arr[matching.sent_id+1]
  *         e_sent_len = e_sent_end - e_sent_start - 1
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]             # <<<<<<<<<<<<<<
@@ -52833,7 +53750,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_start = (__pyx_v_self->fda->sent_index->arr[__pyx_v_matching->sent_id]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1445
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
  *         e_sent_len = e_sent_end - e_sent_start - 1
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]
  *         f_sent_end = self.fda.sent_index.arr[matching.sent_id+1]             # <<<<<<<<<<<<<<
@@ -52842,7 +53759,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_end = (__pyx_v_self->fda->sent_index->arr[(__pyx_v_matching->sent_id + 1)]);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1446
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
  *         f_sent_start = self.fda.sent_index.arr[matching.sent_id]
  *         f_sent_end = self.fda.sent_index.arr[matching.sent_id+1]
  *         f_sent_len = f_sent_end - f_sent_start - 1             # <<<<<<<<<<<<<<
@@ -52851,21 +53768,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_sent_len = ((__pyx_v_f_sent_end - __pyx_v_f_sent_start) - 1);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1448
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1498
  *         f_sent_len = f_sent_end - f_sent_start - 1
  * 
  *         self.findexes1.reset()             # <<<<<<<<<<<<<<
  *         sofar = 0
  *         for i in range(num_chunks):
  */
-  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes1), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes1), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1448; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1498; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1449
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1499
  * 
  *         self.findexes1.reset()
  *         sofar = 0             # <<<<<<<<<<<<<<
@@ -52875,7 +53792,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __Pyx_INCREF(__pyx_int_0);
   __pyx_v_sofar = __pyx_int_0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1450
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1500
  *         self.findexes1.reset()
  *         sofar = 0
  *         for i in range(num_chunks):             # <<<<<<<<<<<<<<
@@ -52886,7 +53803,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   for (__pyx_t_4 = 0; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_i = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1451
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1501
  *         sofar = 0
  *         for i in range(num_chunks):
  *             for j in range(chunklen[i]):             # <<<<<<<<<<<<<<
@@ -52897,35 +53814,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     for (__pyx_t_6 = 0; __pyx_t_6 < __pyx_t_5; __pyx_t_6+=1) {
       __pyx_v_j = __pyx_t_6;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1452
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1502
  *         for i in range(num_chunks):
  *             for j in range(chunklen[i]):
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);             # <<<<<<<<<<<<<<
  *                 sofar += 1
  *             if (i+1<num_chunks):
  */
-      __pyx_t_2 = PyInt_FromLong((((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1452; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong((((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1502; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1452; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1502; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1453
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1503
  *             for j in range(chunklen[i]):
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);
  *                 sofar += 1             # <<<<<<<<<<<<<<
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])
  */
-      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1453; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1503; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
       __Pyx_DECREF(__pyx_v_sofar);
       __pyx_v_sofar = __pyx_t_1;
       __pyx_t_1 = 0;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1454
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
  *                 self.findexes1.append(matching.arr[matching.start+i]+j-f_sent_start);
  *                 sofar += 1
  *             if (i+1<num_chunks):             # <<<<<<<<<<<<<<
@@ -52935,28 +53852,28 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_7 = ((__pyx_v_i + 1) < __pyx_v_num_chunks);
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1455
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1505
  *                 sofar += 1
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])             # <<<<<<<<<<<<<<
  *                 sofar += 1
  * 
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-      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_phrase), __pyx_v_sofar); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_1 = PyObject_GetItem(((PyObject *)__pyx_v_phrase), __pyx_v_sofar); if (!__pyx_t_1) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1505; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_1);
-      __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1455; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes1), __pyx_t_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1505; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1456
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1506
  *             if (i+1<num_chunks):
  *                 self.findexes1.append(phrase[sofar])
  *                 sofar += 1             # <<<<<<<<<<<<<<
  * 
  * 
  */
-      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1456; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyNumber_InPlaceAdd(__pyx_v_sofar, __pyx_int_1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1506; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __Pyx_DECREF(__pyx_v_sofar);
       __pyx_v_sofar = __pyx_t_2;
@@ -52966,7 +53883,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_L7:;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1459
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1509
  * 
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52975,7 +53892,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_links_low = ((int *)malloc((__pyx_v_e_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1460
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1510
  * 
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52984,7 +53901,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_links_high = ((int *)malloc((__pyx_v_e_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1461
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1511
  *         e_links_low = <int*> malloc(e_sent_len*sizeof(int))
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -52993,7 +53910,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_links_low = ((int *)malloc((__pyx_v_f_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1462
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
  *         e_links_high = <int*> malloc(e_sent_len*sizeof(int))
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53002,7 +53919,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_links_high = ((int *)malloc((__pyx_v_f_sent_len * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1463
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1513
  *         f_links_low = <int*> malloc(f_sent_len*sizeof(int))
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53011,7 +53928,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_gap_low = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1464
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1514
  *         f_links_high = <int*> malloc(f_sent_len*sizeof(int))
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53020,7 +53937,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_gap_high = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1465
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1515
  *         f_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53029,7 +53946,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_gap_low = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1466
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1516
  *         f_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53038,7 +53955,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_e_gap_high = ((int *)malloc(((__pyx_v_num_chunks + 1) * (sizeof(int)))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1467
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1517
  *         e_gap_low = <int*> malloc((num_chunks+1)*sizeof(int))
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53047,7 +53964,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_f_gap_low, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1468
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1518
  *         e_gap_high = <int*> malloc((num_chunks+1)*sizeof(int))
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53056,7 +53973,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_f_gap_high, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1469
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
  *         memset(f_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_low, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53065,7 +53982,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_e_gap_low, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1470
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1520
  *         memset(f_gap_high, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_low, 0, (num_chunks+1)*sizeof(int))
  *         memset(e_gap_high, 0, (num_chunks+1)*sizeof(int))             # <<<<<<<<<<<<<<
@@ -53074,7 +53991,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   memset(__pyx_v_e_gap_high, 0, ((__pyx_v_num_chunks + 1) * (sizeof(int))));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1472
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1522
  *         memset(e_gap_high, 0, (num_chunks+1)*sizeof(int))
  * 
  *         reason_for_failure = ""             # <<<<<<<<<<<<<<
@@ -53084,7 +54001,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __Pyx_INCREF(((PyObject *)__pyx_kp_s_45));
   __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_45);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1474
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1524
  *         reason_for_failure = ""
  * 
  *         for i from 0 <= i < e_sent_len:             # <<<<<<<<<<<<<<
@@ -53094,7 +54011,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __pyx_t_3 = __pyx_v_e_sent_len;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1475
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1525
  * 
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -53103,7 +54020,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     (__pyx_v_e_links_low[__pyx_v_i]) = -1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1476
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
  *         for i from 0 <= i < e_sent_len:
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -53113,7 +54030,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     (__pyx_v_e_links_high[__pyx_v_i]) = -1;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1477
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1527
  *             e_links_low[i] = -1
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:             # <<<<<<<<<<<<<<
@@ -53123,7 +54040,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   __pyx_t_3 = __pyx_v_f_sent_len;
   for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1478
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1528
  *             e_links_high[i] = -1
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1             # <<<<<<<<<<<<<<
@@ -53132,7 +54049,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     (__pyx_v_f_links_low[__pyx_v_i]) = -1;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1479
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1529
  *         for i from 0 <= i < f_sent_len:
  *             f_links_low[i] = -1
  *             f_links_high[i] = -1             # <<<<<<<<<<<<<<
@@ -53142,7 +54059,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     (__pyx_v_f_links_high[__pyx_v_i]) = -1;
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1485
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1535
  *         # links that we care about (but then how to look up
  *         # when we want to check something on the e side?)
  *         i = 0             # <<<<<<<<<<<<<<
@@ -53151,7 +54068,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_i = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1486
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1536
  *         # when we want to check something on the e side?)
  *         i = 0
  *         while i < num_links*2:             # <<<<<<<<<<<<<<
@@ -53162,7 +54079,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_7 = (__pyx_v_i < (__pyx_v_num_links * 2));
     if (!__pyx_t_7) break;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1487
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1537
  *         i = 0
  *         while i < num_links*2:
  *             f_i = sent_links[i]             # <<<<<<<<<<<<<<
@@ -53171,7 +54088,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_f_i = (__pyx_v_sent_links[__pyx_v_i]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1488
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1538
  *         while i < num_links*2:
  *             f_i = sent_links[i]
  *             e_i = sent_links[i+1]             # <<<<<<<<<<<<<<
@@ -53180,7 +54097,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_e_i = (__pyx_v_sent_links[(__pyx_v_i + 1)]);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1489
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
  *             f_i = sent_links[i]
  *             e_i = sent_links[i+1]
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:             # <<<<<<<<<<<<<<
@@ -53196,7 +54113,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1490
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1540
  *             e_i = sent_links[i+1]
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:
  *                 f_links_low[f_i] = e_i             # <<<<<<<<<<<<<<
@@ -53208,7 +54125,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L14:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1491
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1541
  *             if f_links_low[f_i] == -1 or f_links_low[f_i] > e_i:
  *                 f_links_low[f_i] = e_i
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:             # <<<<<<<<<<<<<<
@@ -53224,7 +54141,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_8) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1492
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1542
  *                 f_links_low[f_i] = e_i
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:
  *                 f_links_high[f_i] = e_i + 1             # <<<<<<<<<<<<<<
@@ -53236,7 +54153,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L15:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1493
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1543
  *             if f_links_high[f_i] == -1 or f_links_high[f_i] < e_i + 1:
  *                 f_links_high[f_i] = e_i + 1
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:             # <<<<<<<<<<<<<<
@@ -53252,7 +54169,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1494
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1544
  *                 f_links_high[f_i] = e_i + 1
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:
  *                 e_links_low[e_i] = f_i             # <<<<<<<<<<<<<<
@@ -53264,7 +54181,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L16:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1495
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1545
  *             if e_links_low[e_i] == -1 or e_links_low[e_i] > f_i:
  *                 e_links_low[e_i] = f_i
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:             # <<<<<<<<<<<<<<
@@ -53280,7 +54197,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1496
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1546
  *                 e_links_low[e_i] = f_i
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:
  *                 e_links_high[e_i] = f_i + 1             # <<<<<<<<<<<<<<
@@ -53292,7 +54209,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L17:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1497
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1547
  *             if e_links_high[e_i] == -1 or e_links_high[e_i] < f_i + 1:
  *                 e_links_high[e_i] = f_i + 1
  *             i = i + 2             # <<<<<<<<<<<<<<
@@ -53302,19 +54219,19 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_v_i = (__pyx_v_i + 2);
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1499
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1549
  *             i = i + 2
  * 
  *         als = []             # <<<<<<<<<<<<<<
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])
  */
-  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1499; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_2 = PyList_New(0); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1549; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __Pyx_GOTREF(__pyx_t_2);
   __pyx_v_als = __pyx_t_2;
   __pyx_t_2 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1500
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1550
  * 
  *         als = []
  *         for x in range(matching.start,matching.end):             # <<<<<<<<<<<<<<
@@ -53325,18 +54242,18 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   for (__pyx_t_4 = __pyx_v_matching->start; __pyx_t_4 < __pyx_t_3; __pyx_t_4+=1) {
     __pyx_v_x = __pyx_t_4;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1501
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
  *         als = []
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])             # <<<<<<<<<<<<<<
  *             als.append(al)
  *         # check all source-side alignment constraints
  */
-    __pyx_t_2 = PyInt_FromLong(((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_2 = PyInt_FromLong(((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1551; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_1 = PyInt_FromLong((__pyx_v_f_links_low[((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_1 = PyInt_FromLong((__pyx_v_f_links_low[((__pyx_v_matching->arr[__pyx_v_x]) - __pyx_v_f_sent_start)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1551; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_1);
-    __pyx_t_10 = PyTuple_New(2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1501; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyTuple_New(2); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1551; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
     PyTuple_SET_ITEM(__pyx_t_10, 0, __pyx_t_2);
     __Pyx_GIVEREF(__pyx_t_2);
@@ -53348,17 +54265,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_v_al = __pyx_t_10;
     __pyx_t_10 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1502
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1552
  *         for x in range(matching.start,matching.end):
  *             al = (matching.arr[x]-f_sent_start,f_links_low[matching.arr[x]-f_sent_start])
  *             als.append(al)             # <<<<<<<<<<<<<<
  *         # check all source-side alignment constraints
  *         met_constraints = 1
  */
-    __pyx_t_11 = PyList_Append(__pyx_v_als, ((PyObject *)__pyx_v_al)); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1502; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_11 = PyList_Append(__pyx_v_als, ((PyObject *)__pyx_v_al)); if (unlikely(__pyx_t_11 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1552; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   }
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1504
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1554
  *             als.append(al)
  *         # check all source-side alignment constraints
  *         met_constraints = 1             # <<<<<<<<<<<<<<
@@ -53367,7 +54284,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_met_constraints = 1;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1505
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1555
  *         # check all source-side alignment constraints
  *         met_constraints = 1
  *         if self.require_aligned_terminal:             # <<<<<<<<<<<<<<
@@ -53376,7 +54293,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   if (__pyx_v_self->require_aligned_terminal) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1506
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
  *         met_constraints = 1
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0             # <<<<<<<<<<<<<<
@@ -53385,7 +54302,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
     __pyx_v_num_aligned_chunks = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1507
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1557
  *         if self.require_aligned_terminal:
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:             # <<<<<<<<<<<<<<
@@ -53395,7 +54312,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_3 = __pyx_v_num_chunks;
     for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1508
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1558
  *             num_aligned_chunks = 0
  *             for i from 0 <= i < num_chunks:
  *                 for j from 0 <= j < chunklen[i]:             # <<<<<<<<<<<<<<
@@ -53405,7 +54322,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_4 = (__pyx_v_chunklen[__pyx_v_i]);
       for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_4; __pyx_v_j++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1509
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1559
  *             for i from 0 <= i < num_chunks:
  *                 for j from 0 <= j < chunklen[i]:
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:             # <<<<<<<<<<<<<<
@@ -53415,7 +54332,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + __pyx_v_j) - __pyx_v_f_sent_start)]) > -1);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1510
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1560
  *                 for j from 0 <= j < chunklen[i]:
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:
  *                         num_aligned_chunks = num_aligned_chunks + 1             # <<<<<<<<<<<<<<
@@ -53424,7 +54341,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           __pyx_v_num_aligned_chunks = (__pyx_v_num_aligned_chunks + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1511
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1561
  *                     if f_links_low[matching.arr[matching.start+i]+j-f_sent_start] > -1:
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break             # <<<<<<<<<<<<<<
@@ -53439,7 +54356,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_L24_break:;
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1512
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
  *                         num_aligned_chunks = num_aligned_chunks + 1
  *                         break
  *             if num_aligned_chunks == 0:             # <<<<<<<<<<<<<<
@@ -53449,7 +54366,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_9 = (__pyx_v_num_aligned_chunks == 0);
     if (__pyx_t_9) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1513
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1563
  *                         break
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"             # <<<<<<<<<<<<<<
@@ -53460,7 +54377,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __Pyx_DECREF(__pyx_v_reason_for_failure);
       __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_126);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1514
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1564
  *             if num_aligned_chunks == 0:
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53472,7 +54389,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     __pyx_L26:;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1515
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1565
  *                 reason_for_failure = "No aligned terminals"
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:             # <<<<<<<<<<<<<<
@@ -53487,7 +54404,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     if (__pyx_t_7) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1516
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1566
  *                 met_constraints = 0
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"             # <<<<<<<<<<<<<<
@@ -53498,7 +54415,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __Pyx_DECREF(__pyx_v_reason_for_failure);
       __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_127);
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1517
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1567
  *             if self.require_aligned_chunks and num_aligned_chunks < num_chunks:
  *                 reason_for_failure = "Unaligned chunk"
  *                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53513,7 +54430,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L20:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1519
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1569
  *                 met_constraints = 0
  * 
  *         if met_constraints and self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53528,7 +54445,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   if (__pyx_t_9) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1521
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1571
  *         if met_constraints and self.tight_phrases:
  *             # outside edge constraints are checked later
  *             for i from 0 <= i < num_chunks-1:             # <<<<<<<<<<<<<<
@@ -53538,7 +54455,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __pyx_t_12 = (__pyx_v_num_chunks - 1);
     for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_12; __pyx_v_i++) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1522
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1572
  *             # outside edge constraints are checked later
  *             for i from 0 <= i < num_chunks-1:
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:             # <<<<<<<<<<<<<<
@@ -53548,7 +54465,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + (__pyx_v_chunklen[__pyx_v_i])) - __pyx_v_f_sent_start)]) == -1);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1523
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1573
  *             for i from 0 <= i < num_chunks-1:
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"             # <<<<<<<<<<<<<<
@@ -53559,7 +54476,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __Pyx_DECREF(__pyx_v_reason_for_failure);
         __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_128);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1524
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1574
  *                 if f_links_low[matching.arr[matching.start+i]+chunklen[i]-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53568,7 +54485,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_met_constraints = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1525
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1575
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -53580,7 +54497,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L31:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1526
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
  *                     met_constraints = 0
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:             # <<<<<<<<<<<<<<
@@ -53590,7 +54507,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = ((__pyx_v_f_links_low[(((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_i) + 1)]) - 1) - __pyx_v_f_sent_start)]) == -1);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1527
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1577
  *                     break
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"             # <<<<<<<<<<<<<<
@@ -53601,7 +54518,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __Pyx_DECREF(__pyx_v_reason_for_failure);
         __pyx_v_reason_for_failure = ((PyObject *)__pyx_kp_s_128);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1528
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1578
  *                 if f_links_low[matching.arr[matching.start+i+1]-1-f_sent_start] == -1:
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53610,7 +54527,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_met_constraints = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1529
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
  *                     reason_for_failure = "Gaps are not tight phrases"
  *                     met_constraints = 0
  *                     break             # <<<<<<<<<<<<<<
@@ -53627,7 +54544,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L28:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1531
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1581
  *                     break
  * 
  *         f_low = matching.arr[matching.start] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53636,7 +54553,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_low = ((__pyx_v_matching->arr[__pyx_v_matching->start]) - __pyx_v_f_sent_start);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1532
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
  * 
  *         f_low = matching.arr[matching.start] - f_sent_start
  *         f_high = matching.arr[matching.start + matching.size - 1] + chunklen[num_chunks-1] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53645,7 +54562,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   __pyx_v_f_high = (((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_matching->size) - 1)]) + (__pyx_v_chunklen[(__pyx_v_num_chunks - 1)])) - __pyx_v_f_sent_start);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1533
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1583
  *         f_low = matching.arr[matching.start] - f_sent_start
  *         f_high = matching.arr[matching.start + matching.size - 1] + chunklen[num_chunks-1] - f_sent_start
  *         if met_constraints:             # <<<<<<<<<<<<<<
@@ -53654,17 +54571,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   if (__pyx_v_met_constraints) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1535
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1585
  *         if met_constraints:
  * 
  *             if self.find_fixpoint(f_low, f_high, f_links_low, f_links_high, e_links_low, e_links_high,             # <<<<<<<<<<<<<<
  *                                 -1, -1, &e_low, &e_high, &f_back_low, &f_back_high, f_sent_len, e_sent_len,
  *                                 self.train_max_initial_size, self.train_max_initial_size,
  */
-    __pyx_t_10 = PyInt_FromLong(__pyx_v_f_high); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1535; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_10 = PyInt_FromLong(__pyx_v_f_high); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1585; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     __Pyx_GOTREF(__pyx_t_10);
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1539
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1589
  *                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                 self.train_min_gap_size, 0,
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):             # <<<<<<<<<<<<<<
@@ -53675,7 +54592,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
     if (__pyx_t_3) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1540
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
  *                                 self.train_min_gap_size, 0,
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0             # <<<<<<<<<<<<<<
@@ -53684,7 +54601,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
       __pyx_v_gap_error = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1541
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1591
  *                                 self.max_nonterminals - num_chunks + 1, 1, 1, 0, 0):
  *                 gap_error = 0
  *                 num_gaps = 0             # <<<<<<<<<<<<<<
@@ -53693,7 +54610,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
       __pyx_v_num_gaps = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1543
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1593
  *                 num_gaps = 0
  * 
  *                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -53703,7 +54620,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_f_back_low < __pyx_v_f_low);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1544
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1594
  * 
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low             # <<<<<<<<<<<<<<
@@ -53712,7 +54629,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[0]) = __pyx_v_f_back_low;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1545
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1595
  *                 if f_back_low < f_low:
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low             # <<<<<<<<<<<<<<
@@ -53721,7 +54638,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[0]) = __pyx_v_f_low;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1546
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1596
  *                     f_gap_low[0] = f_back_low
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1             # <<<<<<<<<<<<<<
@@ -53730,7 +54647,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_num_gaps = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1547
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1597
  *                     f_gap_high[0] = f_low
  *                     num_gaps = 1
  *                     gap_start = 0             # <<<<<<<<<<<<<<
@@ -53739,7 +54656,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_gap_start = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1548
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
  *                     num_gaps = 1
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53748,7 +54665,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_phrase_len = (__pyx_v_phrase_len + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1549
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1599
  *                     gap_start = 0
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53758,7 +54675,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_phrase_len > __pyx_v_self->max_length);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1550
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1600
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53770,7 +54687,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L36:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1551
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1601
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53779,7 +54696,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_self->tight_phrases) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1552
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1602
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:             # <<<<<<<<<<<<<<
@@ -53795,7 +54712,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_8) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1553
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -53804,7 +54721,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1554
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1604
  *                         if f_links_low[f_back_low] == -1 or f_links_low[f_low-1] == -1:
  *                             gap_error = 1
  *                             reason_for_failure = "Inside edges of preceding subphrase are not tight"             # <<<<<<<<<<<<<<
@@ -53824,7 +54741,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1556
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1606
  *                             reason_for_failure = "Inside edges of preceding subphrase are not tight"
  *                 else:
  *                     gap_start = 1             # <<<<<<<<<<<<<<
@@ -53833,7 +54750,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_gap_start = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1557
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1607
  *                 else:
  *                     gap_start = 1
  *                     if self.tight_phrases and f_links_low[f_low] == -1:             # <<<<<<<<<<<<<<
@@ -53848,7 +54765,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1560
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
  *                         # this is not a hard error.    we can't extract this phrase
  *                         # but we still might be able to extract a superphrase
  *                         met_constraints = 0             # <<<<<<<<<<<<<<
@@ -53862,7 +54779,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L35:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1562
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1612
  *                         met_constraints = 0
  * 
  *                 for i from 0 <= i < matching.size - 1:             # <<<<<<<<<<<<<<
@@ -53872,7 +54789,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_12 = (__pyx_v_matching->size - 1);
       for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_12; __pyx_v_i++) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1563
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1613
  * 
  *                 for i from 0 <= i < matching.size - 1:
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53881,7 +54798,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[(1 + __pyx_v_i)]) = (((__pyx_v_matching->arr[(__pyx_v_matching->start + __pyx_v_i)]) + (__pyx_v_chunklen[__pyx_v_i])) - __pyx_v_f_sent_start);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1564
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
  *                 for i from 0 <= i < matching.size - 1:
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start
  *                     f_gap_high[1+i] = matching.arr[matching.start+i+1] - f_sent_start             # <<<<<<<<<<<<<<
@@ -53890,7 +54807,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[(1 + __pyx_v_i)]) = ((__pyx_v_matching->arr[((__pyx_v_matching->start + __pyx_v_i) + 1)]) - __pyx_v_f_sent_start);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1565
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1615
  *                     f_gap_low[1+i] = matching.arr[matching.start+i] + chunklen[i] - f_sent_start
  *                     f_gap_high[1+i] = matching.arr[matching.start+i+1] - f_sent_start
  *                     num_gaps = num_gaps + 1             # <<<<<<<<<<<<<<
@@ -53900,7 +54817,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_v_num_gaps = (__pyx_v_num_gaps + 1);
       }
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1567
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1617
  *                     num_gaps = num_gaps + 1
  * 
  *                 if f_high < f_back_high:             # <<<<<<<<<<<<<<
@@ -53910,7 +54827,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_f_high < __pyx_v_f_back_high);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1568
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1618
  * 
  *                 if f_high < f_back_high:
  *                     f_gap_low[gap_start+num_gaps] = f_high             # <<<<<<<<<<<<<<
@@ -53919,7 +54836,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_num_gaps)]) = __pyx_v_f_high;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1569
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1619
  *                 if f_high < f_back_high:
  *                     f_gap_low[gap_start+num_gaps] = f_high
  *                     f_gap_high[gap_start+num_gaps] = f_back_high             # <<<<<<<<<<<<<<
@@ -53928,7 +54845,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         (__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_num_gaps)]) = __pyx_v_f_back_high;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1570
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1620
  *                     f_gap_low[gap_start+num_gaps] = f_high
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1             # <<<<<<<<<<<<<<
@@ -53937,7 +54854,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_num_gaps = (__pyx_v_num_gaps + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1571
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1621
  *                     f_gap_high[gap_start+num_gaps] = f_back_high
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1             # <<<<<<<<<<<<<<
@@ -53946,7 +54863,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_phrase_len = (__pyx_v_phrase_len + 1);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1572
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1622
  *                     num_gaps = num_gaps + 1
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:             # <<<<<<<<<<<<<<
@@ -53956,7 +54873,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_phrase_len > __pyx_v_self->max_length);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1573
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1623
  *                     phrase_len = phrase_len+1
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1             # <<<<<<<<<<<<<<
@@ -53968,7 +54885,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L43:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1574
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1624
  *                     if phrase_len > self.max_length:
  *                         gap_error = 1
  *                     if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -53977,7 +54894,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_self->tight_phrases) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1575
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1625
  *                         gap_error = 1
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:             # <<<<<<<<<<<<<<
@@ -53993,7 +54910,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1576
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1626
  *                     if self.tight_phrases:
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -54002,7 +54919,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1577
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1627
  *                         if f_links_low[f_back_high-1] == -1 or f_links_low[f_high] == -1:
  *                             gap_error = 1
  *                             reason_for_failure = "Inside edges of following subphrase are not tight"             # <<<<<<<<<<<<<<
@@ -54022,7 +54939,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       /*else*/ {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1579
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1629
  *                             reason_for_failure = "Inside edges of following subphrase are not tight"
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -54037,7 +54954,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1580
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1630
  *                 else:
  *                     if self.tight_phrases and f_links_low[f_high-1] == -1:
  *                         met_constraints = 0             # <<<<<<<<<<<<<<
@@ -54051,7 +54968,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L42:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1582
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1632
  *                         met_constraints = 0
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -54061,7 +54978,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_gap_error == 0);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1583
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1633
  * 
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low             # <<<<<<<<<<<<<<
@@ -54070,7 +54987,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_e_word_count = (__pyx_v_e_high - __pyx_v_e_low);
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1584
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1634
  *                 if gap_error == 0:
  *                     e_word_count = e_high - e_low
  *                     for i from 0 <= i < num_gaps: # check integrity of subphrases             # <<<<<<<<<<<<<<
@@ -54080,17 +54997,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_3 = __pyx_v_num_gaps;
         for (__pyx_v_i = 0; __pyx_v_i < __pyx_t_3; __pyx_v_i++) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1585
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1635
  *                     e_word_count = e_high - e_low
  *                     for i from 0 <= i < num_gaps: # check integrity of subphrases
  *                         if self.find_fixpoint(f_gap_low[gap_start+i], f_gap_high[gap_start+i],             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low+gap_start+i, e_gap_high+gap_start+i,
  */
-          __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1585; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1635; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1590
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
  *                                             f_gap_low+gap_start+i, f_gap_high+gap_start+i,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54101,7 +55018,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1592
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0) == 0:
  *                             gap_error = 1             # <<<<<<<<<<<<<<
@@ -54110,18 +55027,18 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_gap_error = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1593
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1643
  *                                             0, 0, 0, 0, 0, 0, 0) == 0:
  *                             gap_error = 1
  *                             reason_for_failure = "Subphrase [%d, %d] failed integrity check" % (f_gap_low[gap_start+i], f_gap_high[gap_start+i])             # <<<<<<<<<<<<<<
  *                             break
  * 
  */
-            __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_10 = PyInt_FromLong((__pyx_v_f_gap_low[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_10);
-            __pyx_t_1 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyInt_FromLong((__pyx_v_f_gap_high[(__pyx_v_gap_start + __pyx_v_i)])); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
-            __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyTuple_New(2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_10);
             __Pyx_GIVEREF(__pyx_t_10);
@@ -54129,14 +55046,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __Pyx_GIVEREF(__pyx_t_1);
             __pyx_t_10 = 0;
             __pyx_t_1 = 0;
-            __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_131), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_131), ((PyObject *)__pyx_t_2)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(((PyObject *)__pyx_t_1));
             __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
             __Pyx_DECREF(__pyx_v_reason_for_failure);
             __pyx_v_reason_for_failure = ((PyObject *)__pyx_t_1);
             __pyx_t_1 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1594
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1644
  *                             gap_error = 1
  *                             reason_for_failure = "Subphrase [%d, %d] failed integrity check" % (f_gap_low[gap_start+i], f_gap_high[gap_start+i])
  *                             break             # <<<<<<<<<<<<<<
@@ -54153,7 +55070,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       }
       __pyx_L47:;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1596
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1646
  *                             break
  * 
  *                 if gap_error == 0:             # <<<<<<<<<<<<<<
@@ -54163,7 +55080,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
       __pyx_t_9 = (__pyx_v_gap_error == 0);
       if (__pyx_t_9) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1597
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
  * 
  *                 if gap_error == 0:
  *                     i = 1             # <<<<<<<<<<<<<<
@@ -54172,21 +55089,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         __pyx_v_i = 1;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1598
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1648
  *                 if gap_error == 0:
  *                     i = 1
  *                     self.findexes.reset()             # <<<<<<<<<<<<<<
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  */
-        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1598; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1648; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1598; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1648; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1599
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1649
  *                     i = 1
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -54196,7 +55113,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_f_back_low < __pyx_v_f_low);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1600
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
  *                     self.findexes.reset()
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54205,7 +55122,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1601
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1651
  *                     if f_back_low < f_low:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         i = i+1             # <<<<<<<<<<<<<<
@@ -54214,16 +55131,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           __pyx_v_i = (__pyx_v_i + 1);
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1602
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1652
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         i = i+1
  *                         self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:
  */
-          __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1652; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
-          __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1602; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_2); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1652; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_1);
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
           __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -54231,27 +55148,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L52:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1603
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1653
  *                         i = i+1
  *                         self.findexes.append(sym_setindex(self.category, i))
  *                     self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):
  */
-        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1653; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_1);
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1653; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
         PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_self->findexes1));
         __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-        __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1603; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1653; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
         __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
         __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1604
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
  *                         self.findexes.append(sym_setindex(self.category, i))
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54261,7 +55178,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_3 = __pyx_v_phrase->n;
         for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1605
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1655
  *                     self.findexes.extend(self.findexes1)
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -54271,7 +55188,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
           if (__pyx_t_4) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1606
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
  *                     for j from 0 <= j < phrase.n:
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54280,7 +55197,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1607
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1657
  *                         if sym_isvar(phrase.syms[j]):
  *                             fphr_arr._append(sym_setindex(self.category, i))
  *                             i = i + 1             # <<<<<<<<<<<<<<
@@ -54292,7 +55209,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1609
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1659
  *                             i = i + 1
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -54304,7 +55221,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_L55:;
         }
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1610
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1660
  *                         else:
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -54314,7 +55231,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_f_back_high > __pyx_v_f_high);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1611
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1661
  *                             fphr_arr._append(phrase.syms[j])
  *                     if f_back_high > f_high:
  *                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54323,16 +55240,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
           ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1612
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1662
  *                     if f_back_high > f_high:
  *                         fphr_arr._append(sym_setindex(self.category, i))
  *                         self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  * 
  *                     fphr = Phrase(fphr_arr)
  */
-          __pyx_t_10 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1612; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
-          __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_10); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1612; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_2 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_10); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_2);
           __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
@@ -54340,25 +55257,25 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L56:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1614
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1664
  *                         self.findexes.append(sym_setindex(self.category, i))
  * 
  *                     fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                     if met_constraints:
  *                         phrase_list = self.extract_phrases(e_low, e_high, e_gap_low + gap_start, e_gap_high + gap_start, e_links_low, num_gaps,
  */
-        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1614; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_2 = PyTuple_New(1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1664; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
         PyTuple_SET_ITEM(__pyx_t_2, 0, ((PyObject *)__pyx_v_fphr_arr));
         __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-        __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1614; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_10 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_2), NULL); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1664; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_10);
         __Pyx_DECREF(((PyObject *)__pyx_t_2)); __pyx_t_2 = 0;
         __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_10);
         __pyx_t_10 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1615
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1665
  * 
  *                     fphr = Phrase(fphr_arr)
  *                     if met_constraints:             # <<<<<<<<<<<<<<
@@ -54367,47 +55284,47 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
         if (__pyx_v_met_constraints) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1618
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
  *                         phrase_list = self.extract_phrases(e_low, e_high, e_gap_low + gap_start, e_gap_high + gap_start, e_links_low, num_gaps,
  *                                             f_back_low, f_back_high, f_gap_low + gap_start, f_gap_high + gap_start, f_links_low,
  *                                             matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                         if len(phrase_list) > 0:
  *                             pair_count = 1.0 / len(phrase_list)
  */
-          __pyx_t_10 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_low, __pyx_v_e_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, __pyx_v_num_gaps, __pyx_v_f_back_low, __pyx_v_f_back_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1616; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_10 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_low, __pyx_v_e_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, __pyx_v_num_gaps, __pyx_v_f_back_low, __pyx_v_f_back_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1666; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __Pyx_GOTREF(__pyx_t_10);
           __pyx_v_phrase_list = __pyx_t_10;
           __pyx_t_10 = 0;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1619
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
  *                                             f_back_low, f_back_high, f_gap_low + gap_start, f_gap_high + gap_start, f_links_low,
  *                                             matching.sent_id, e_sent_len, e_sent_start)
  *                         if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                             pair_count = 1.0 / len(phrase_list)
  *                         else:
  */
-          __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1619; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1669; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           __pyx_t_9 = (__pyx_t_13 > 0);
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1620
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1670
  *                                             matching.sent_id, e_sent_len, e_sent_start)
  *                         if len(phrase_list) > 0:
  *                             pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                         else:
  *                             pair_count = 0
  */
-            __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1620; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1670; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             if (unlikely(__pyx_t_13 == 0)) {
               PyErr_Format(PyExc_ZeroDivisionError, "float division");
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1620; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1670; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             }
             __pyx_v_pair_count = (1.0 / __pyx_t_13);
             goto __pyx_L58;
           }
           /*else*/ {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1622
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
  *                             pair_count = 1.0 / len(phrase_list)
  *                         else:
  *                             pair_count = 0             # <<<<<<<<<<<<<<
@@ -54416,22 +55333,22 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_pair_count = 0.0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1623
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1673
  *                         else:
  *                             pair_count = 0
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)             # <<<<<<<<<<<<<<
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  */
-            __pyx_t_10 = PyInt_FromLong(__pyx_v_f_back_low); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_10 = PyInt_FromLong(__pyx_v_f_back_low); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_10);
-            __pyx_t_2 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
-            __pyx_t_1 = PyInt_FromLong(__pyx_v_e_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyInt_FromLong(__pyx_v_e_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_14 = PyInt_FromLong(__pyx_v_e_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_14 = PyInt_FromLong(__pyx_v_e_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_14);
-            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             PyTuple_SET_ITEM(__pyx_t_15, 0, __pyx_t_10);
             __Pyx_GIVEREF(__pyx_t_10);
@@ -54445,7 +55362,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_2 = 0;
             __pyx_t_1 = 0;
             __pyx_t_14 = 0;
-            __pyx_t_14 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_132), ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1623; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_14 = PyNumber_Remainder(((PyObject *)__pyx_kp_s_132), ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
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@@ -54454,7 +55371,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
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-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1624
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1674
  *                             pair_count = 0
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)
  *                         for (phrase2,eindexes) in phrase_list:             # <<<<<<<<<<<<<<
@@ -54465,7 +55382,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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             __pyx_t_16 = NULL;
           } else {
-            __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_14);
             __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
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@@ -54473,23 +55390,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_14)) {
               if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_14)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_14)) {
               if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_14)) break;
               #if CYTHON_COMPILING_IN_CPYTHON
-              __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #else
-              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               #endif
             } else {
               __pyx_t_15 = __pyx_t_16(__pyx_t_14);
               if (unlikely(!__pyx_t_15)) {
                 if (PyErr_Occurred()) {
                   if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 break;
               }
@@ -54505,7 +55422,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (unlikely(size != 2)) {
                 if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                 else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               }
               #if CYTHON_COMPILING_IN_CPYTHON
               if (likely(PyTuple_CheckExact(sequence))) {
@@ -54518,14 +55435,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __Pyx_INCREF(__pyx_t_1);
               __Pyx_INCREF(__pyx_t_2);
               #else
-              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-              __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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             } else
             {
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-              __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -54533,7 +55450,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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-              if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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               __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
               goto __pyx_L62_unpacking_done;
@@ -54541,7 +55458,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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               __pyx_t_17 = NULL;
               if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1624; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1674; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_L62_unpacking_done:;
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             __Pyx_XDECREF(__pyx_v_phrase2);
@@ -54551,7 +55468,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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             __pyx_t_2 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1625
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1675
  *                             reason_for_failure = "Didn't extract anything from [%d, %d] -> [%d, %d]" % (f_back_low, f_back_high, e_low, e_high)
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -54560,31 +55477,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_t_15 = ((PyObject *)__pyx_v_self->findexes);
             __Pyx_INCREF(__pyx_t_15);
-            __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1625; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1675; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_2);
             __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
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             __pyx_v_als1 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
             __pyx_t_2 = 0;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1626
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1676
  *                         for (phrase2,eindexes) in phrase_list:
  *                             als1 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                             extracts.append((fphr, phrase2, pair_count, tuple(als1)))             # <<<<<<<<<<<<<<
  * 
  *                     if (num_gaps < self.max_nonterminals and
  */
-            __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             __Pyx_INCREF(((PyObject *)__pyx_v_als1));
             PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_als1));
             __Pyx_GIVEREF(((PyObject *)__pyx_v_als1));
-            __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_15);
             __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
             PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr));
@@ -54598,7 +55515,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __Pyx_GIVEREF(__pyx_t_1);
             __pyx_t_2 = 0;
             __pyx_t_1 = 0;
-            __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1626; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             __Pyx_GOTREF(__pyx_t_1);
             __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
             __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -54608,7 +55525,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         __pyx_L57:;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1628
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1678
  *                             extracts.append((fphr, phrase2, pair_count, tuple(als1)))
  * 
  *                     if (num_gaps < self.max_nonterminals and             # <<<<<<<<<<<<<<
@@ -54618,7 +55535,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         __pyx_t_9 = (__pyx_v_num_gaps < __pyx_v_self->max_nonterminals);
         if (__pyx_t_9) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1629
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1679
  * 
  *                     if (num_gaps < self.max_nonterminals and
  *                         phrase_len < self.max_length and             # <<<<<<<<<<<<<<
@@ -54628,7 +55545,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1630
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1680
  *                     if (num_gaps < self.max_nonterminals and
  *                         phrase_len < self.max_length and
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):             # <<<<<<<<<<<<<<
@@ -54646,7 +55563,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
         }
         if (__pyx_t_7) {
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1631
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
  *                         phrase_len < self.max_length and
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):
  *                         if (f_back_low == f_low and             # <<<<<<<<<<<<<<
@@ -54656,7 +55573,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_f_back_low == __pyx_v_f_low);
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1632
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1682
  *                         f_back_high - f_back_low + self.train_min_gap_size <= self.train_max_initial_size):
  *                         if (f_back_low == f_low and
  *                                 f_low >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -54666,7 +55583,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = (__pyx_v_f_low >= __pyx_v_self->train_min_gap_size);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1633
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1683
  *                         if (f_back_low == f_low and
  *                                 f_low >= self.train_min_gap_size and
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):             # <<<<<<<<<<<<<<
@@ -54696,7 +55613,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1634
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1684
  *                                 f_low >= self.train_min_gap_size and
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):
  *                             f_x_low = f_low-self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -54705,7 +55622,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_low = (__pyx_v_f_low - __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1635
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1685
  *                                 ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_back_high-1] != -1))):
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -54714,7 +55631,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1636
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1686
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -54723,7 +55640,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1637
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:             # <<<<<<<<<<<<<<
@@ -54740,7 +55657,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1638
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1688
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -54753,7 +55670,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L65:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1639
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1689
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0 or f_back_high - f_x_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -54769,7 +55686,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1640
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1690
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0 or f_back_high - f_x_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -54781,7 +55698,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L68:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1642
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -54790,17 +55707,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1643
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_x_low, f_back_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_14 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1643; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyInt_FromLong(__pyx_v_f_back_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1693; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1647
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1697
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54810,7 +55727,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_x_low, __pyx_t_14, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 1, 1, 0, 1, 0)) {
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1649
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1699
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             1, 1, 1, 1, 0, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_low] != -1) and             # <<<<<<<<<<<<<<
@@ -54826,17 +55743,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1650
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
  *                                             1, 1, 1, 1, 0, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_low] != -1) and
  *                                 self.find_fixpoint(f_x_low, f_low,    # check integrity of new subphrase             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  */
-                  __pyx_t_1 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1650; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1700; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_1);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1654
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1704
  *                                             -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -54859,7 +55776,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1656
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1706
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -54868,7 +55785,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1657
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1707
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -54877,35 +55794,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1658
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1658; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1708; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_1 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1658; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1708; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1659
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1709
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1709; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1659; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1709; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1660
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54914,7 +55831,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1661
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1711
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -54923,27 +55840,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = (__pyx_v_i + 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1662
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_15 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1662; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(__pyx_t_14, ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1663
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1713
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -54953,7 +55870,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1664
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1714
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -54963,7 +55880,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1665
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1715
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -54972,7 +55889,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1666
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1716
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -54984,7 +55901,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1668
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1718
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -54996,7 +55913,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L72:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1669
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1719
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:             # <<<<<<<<<<<<<<
@@ -55006,7 +55923,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_7 = (__pyx_v_f_back_high > __pyx_v_f_high);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1670
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1720
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 if f_back_high > f_high:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55015,16 +55932,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1671
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1721
  *                                 if f_back_high > f_high:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  */
-                __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1671; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1721; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
-                __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1671; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1721; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -55032,67 +55949,67 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L73:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1672
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1722
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  */
-              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1672; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1722; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1672; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1722; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_15);
               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1675
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1725
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  *                                                     e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_15 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1673; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1723; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_15;
               __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1676
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1726
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low, matching.sent_id,
  *                                                     e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1676; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1726; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_7 = (__pyx_t_13 > 0);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1677
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1727
  *                                                     e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1677; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1727; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1677; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1727; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L74;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1679
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1729
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55103,7 +56020,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L74:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1680
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1730
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55114,7 +56031,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_15 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_15); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_15 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_15 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __pyx_t_16 = Py_TYPE(__pyx_t_15)->tp_iternext;
               }
@@ -55122,23 +56039,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_15)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_15)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_1 = PyList_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyList_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_15)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_15)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PyTuple_GET_ITEM(__pyx_t_15, __pyx_t_13); __Pyx_INCREF(__pyx_t_1); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(__pyx_t_15, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_1 = __pyx_t_16(__pyx_t_15);
                   if (unlikely(!__pyx_t_1)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -55154,7 +56071,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -55167,14 +56084,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_14);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_14 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_1); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -55182,7 +56099,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_GOTREF(__pyx_t_14);
                   index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L77_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L78_unpacking_done;
@@ -55190,7 +56107,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1680; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L78_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -55200,7 +56117,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1681
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1731
  *                                     pair_count = 0
  *                                 for phrase2,eindexes in phrase_list:
  *                                     als2 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -55209,31 +56126,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_1 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_1);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_1, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1681; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_1, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als2));
                 __pyx_v_als2 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1682
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1732
  *                                 for phrase2,eindexes in phrase_list:
  *                                     als2 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als2)))             # <<<<<<<<<<<<<<
  * 
  *                         if (f_back_high == f_high and
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyTuple_New(1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_INCREF(((PyObject *)__pyx_v_als2));
                 PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_als2));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als2));
-                __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_1), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
-                __pyx_t_1 = PyTuple_New(4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyTuple_New(4); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_1, 0, ((PyObject *)__pyx_v_fphr));
@@ -55247,7 +56164,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_14);
                 __pyx_t_2 = 0;
                 __pyx_t_14 = 0;
-                __pyx_t_14 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1682; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_1)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1732; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
@@ -55260,7 +56177,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L64:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1684
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als2)))
  * 
  *                         if (f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -55270,7 +56187,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_f_back_high == __pyx_v_f_high);
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1685
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1735
  * 
  *                         if (f_back_high == f_high and
  *                             f_sent_len - f_high >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55280,7 +56197,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = ((__pyx_v_f_sent_len - __pyx_v_f_high) >= __pyx_v_self->train_min_gap_size);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1686
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1736
  *                         if (f_back_high == f_high and
  *                             f_sent_len - f_high >= self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):             # <<<<<<<<<<<<<<
@@ -55310,7 +56227,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1687
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
  *                             f_sent_len - f_high >= self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):
  *                             f_x_high = f_high+self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -55319,7 +56236,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_high = (__pyx_v_f_high + __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1688
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1738
  *                             ((not self.tight_phrases) or (f_links_low[f_high] != -1 and f_links_low[f_back_low] != -1))):
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -55328,7 +56245,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1689
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1739
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             met_constraints = 1
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -55337,7 +56254,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1690
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1740
  *                             met_constraints = 1
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -55354,7 +56271,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1691
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1741
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1             # <<<<<<<<<<<<<<
@@ -55367,7 +56284,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L80:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1692
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1742
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_back_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -55383,7 +56300,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1693
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1743
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_back_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -55395,7 +56312,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L83:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1695
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1745
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -55404,17 +56321,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1696
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1746
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_back_low, f_x_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1696; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1746; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1700
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1750
  *                                             e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -55424,7 +56341,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_back_low, __pyx_t_15, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 1, 0, 1, 1, 0)) {
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1702
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1752
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             1, 1, 1, 0, 1, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_high-1] != -1) and             # <<<<<<<<<<<<<<
@@ -55440,17 +56357,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_9) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1703
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1753
  *                                             1, 1, 1, 0, 1, 1, 0) and
  *                                 ((not self.tight_phrases) or f_links_low[f_x_high-1] != -1) and
  *                                 self.find_fixpoint(f_high, f_x_high,             # <<<<<<<<<<<<<<
  *                                             f_links_low, f_links_high, e_links_low, e_links_high,
  *                                             -1, -1, e_gap_low+gap_start+num_gaps, e_gap_high+gap_start+num_gaps,
  */
-                  __pyx_t_14 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1703; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1753; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_14);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1708
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1758
  *                                             f_gap_low+gap_start+num_gaps, f_gap_high+gap_start+num_gaps,
  *                                             f_sent_len, e_sent_len,
  *                                             self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -55473,7 +56390,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_7) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1710
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1760
  *                                             self.train_max_initial_size, self.train_max_initial_size,
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -55482,7 +56399,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1711
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
  *                                             0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -55491,21 +56408,21 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1712
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1762
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_14 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1712; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1713
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1763
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:             # <<<<<<<<<<<<<<
@@ -55515,7 +56432,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_7 = (__pyx_v_f_back_low < __pyx_v_f_low);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1714
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1764
  *                                 self.findexes.reset()
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55524,7 +56441,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1715
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1765
  *                                 if f_back_low < f_low:
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     i = i+1             # <<<<<<<<<<<<<<
@@ -55533,16 +56450,16 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_v_i = (__pyx_v_i + 1);
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1716
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
  *                                     fphr_arr._append(sym_setindex(self.category, i))
  *                                     i = i+1
  *                                     self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  */
-                __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1716; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
-                __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1716; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1766; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
@@ -55550,27 +56467,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L85:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1717
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1767
  *                                     i = i+1
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_1 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1717; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(__pyx_t_15, ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1767; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1718
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1768
  *                                     self.findexes.append(sym_setindex(self.category, i))
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -55580,7 +56497,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1719
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -55590,7 +56507,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1720
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1770
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55599,7 +56516,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1721
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1771
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -55611,7 +56528,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1723
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -55623,7 +56540,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L88:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1724
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1774
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -55632,81 +56549,81 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1725
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1775
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1725; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1725; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1726
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1776
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  */
-              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1726; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1726; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1776; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_1);
               __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1729
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1779
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low+gap_start, e_gap_high+gap_start, e_links_low, num_gaps+1,
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1727; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, (__pyx_v_e_gap_low + __pyx_v_gap_start), (__pyx_v_e_gap_high + __pyx_v_gap_start), __pyx_v_e_links_low, (__pyx_v_num_gaps + 1), __pyx_v_f_x_low, __pyx_v_f_x_high, (__pyx_v_f_gap_low + __pyx_v_gap_start), (__pyx_v_f_gap_high + __pyx_v_gap_start), __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1777; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_1;
               __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1730
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
  *                                                     f_x_low, f_x_high, f_gap_low+gap_start, f_gap_high+gap_start, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1730; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1780; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_7 = (__pyx_t_13 > 0);
               if (__pyx_t_7) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1731
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1781
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1781; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1731; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1781; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L89;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1733
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1783
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -55717,7 +56634,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L89:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1734
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -55728,7 +56645,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_1 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_1); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_1 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __pyx_t_16 = Py_TYPE(__pyx_t_1)->tp_iternext;
               }
@@ -55736,23 +56653,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_1)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_1)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_14 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyList_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_1)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_1)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_14 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PyTuple_GET_ITEM(__pyx_t_1, __pyx_t_13); __Pyx_INCREF(__pyx_t_14); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_14 = PySequence_ITEM(__pyx_t_1, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_14 = __pyx_t_16(__pyx_t_1);
                   if (unlikely(!__pyx_t_14)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -55768,7 +56685,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   }
                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -55781,14 +56698,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_15);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_15 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                   __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_14); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_14); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -55796,7 +56713,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_GOTREF(__pyx_t_15);
                   index = 1; __pyx_t_2 = __pyx_t_17(__pyx_t_10); if (unlikely(!__pyx_t_2)) goto __pyx_L92_unpacking_failed;
                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L93_unpacking_done;
@@ -55804,7 +56721,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1734; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_L93_unpacking_done:;
                 }
                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -55814,7 +56731,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1735
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1785
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -55823,31 +56740,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_14 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_14);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_14, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1735; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_14, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als3));
                 __pyx_v_als3 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1736
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1786
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))             # <<<<<<<<<<<<<<
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyTuple_New(1); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_INCREF(((PyObject *)__pyx_v_als3));
                 PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_als3));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als3));
-                __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_14), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
-                __pyx_t_14 = PyTuple_New(4); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_14 = PyTuple_New(4); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_14, 0, ((PyObject *)__pyx_v_fphr));
@@ -55861,7 +56778,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_15);
                 __pyx_t_2 = 0;
                 __pyx_t_15 = 0;
-                __pyx_t_15 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_14)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1736; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_14)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1786; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_DECREF(((PyObject *)__pyx_t_14)); __pyx_t_14 = 0;
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
@@ -55874,7 +56791,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           __pyx_L79:;
 
-          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1737
+          /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1787
  *                                     als3 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))
  *                         if (num_gaps < self.max_nonterminals - 1 and             # <<<<<<<<<<<<<<
@@ -55884,7 +56801,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           __pyx_t_7 = (__pyx_v_num_gaps < (__pyx_v_self->max_nonterminals - 1));
           if (__pyx_t_7) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1738
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1788
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als3)))
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and             # <<<<<<<<<<<<<<
@@ -55894,7 +56811,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_9 = ((__pyx_v_phrase_len + 1) < __pyx_v_self->max_length);
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1739
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1789
  *                         if (num_gaps < self.max_nonterminals - 1 and
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and             # <<<<<<<<<<<<<<
@@ -55904,7 +56821,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_18 = (__pyx_v_f_back_high == __pyx_v_f_high);
               if (__pyx_t_18) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1740
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1790
  *                             phrase_len+1 < self.max_length and
  *                             f_back_high == f_high and
  *                             f_back_low == f_low and             # <<<<<<<<<<<<<<
@@ -55914,7 +56831,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_8 = (__pyx_v_f_back_low == __pyx_v_f_low);
                 if (__pyx_t_8) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1741
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1791
  *                             f_back_high == f_high and
  *                             f_back_low == f_low and
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and             # <<<<<<<<<<<<<<
@@ -55924,7 +56841,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __pyx_t_19 = (((__pyx_v_f_back_high - __pyx_v_f_back_low) + (2 * __pyx_v_self->train_min_gap_size)) <= __pyx_v_self->train_max_initial_size);
                   if (__pyx_t_19) {
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1742
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1792
  *                             f_back_low == f_low and
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and
  *                             f_low >= self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55934,7 +56851,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                     __pyx_t_20 = (__pyx_v_f_low >= __pyx_v_self->train_min_gap_size);
                     if (__pyx_t_20) {
 
-                      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1743
+                      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1793
  *                             f_back_high - f_back_low + (2*self.train_min_gap_size) <= self.train_max_initial_size and
  *                             f_low >= self.train_min_gap_size and
  *                             f_high <= f_sent_len - self.train_min_gap_size and             # <<<<<<<<<<<<<<
@@ -55944,7 +56861,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                       __pyx_t_21 = (__pyx_v_f_high <= (__pyx_v_f_sent_len - __pyx_v_self->train_min_gap_size));
                       if (__pyx_t_21) {
 
-                        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1744
+                        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
  *                             f_low >= self.train_min_gap_size and
  *                             f_high <= f_sent_len - self.train_min_gap_size and
  *                             ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_high] != -1))):             # <<<<<<<<<<<<<<
@@ -55994,7 +56911,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
           }
           if (__pyx_t_9) {
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1746
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1796
  *                             ((not self.tight_phrases) or (f_links_low[f_low-1] != -1 and f_links_low[f_high] != -1))):
  * 
  *                             met_constraints = 1             # <<<<<<<<<<<<<<
@@ -56003,7 +56920,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_met_constraints = 1;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1747
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1797
  * 
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -56012,7 +56929,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_low = (__pyx_v_f_low - __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1748
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1798
  *                             met_constraints = 1
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -56021,7 +56938,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1749
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1799
  *                             f_x_low = f_low-self.train_min_gap_size
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:             # <<<<<<<<<<<<<<
@@ -56038,7 +56955,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_18) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1750
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1800
  *                             if self.tight_phrases:
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1             # <<<<<<<<<<<<<<
@@ -56051,7 +56968,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L95:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1751
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1801
  *                                 while f_x_low >= 0 and f_links_low[f_x_low] == -1:
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0:             # <<<<<<<<<<<<<<
@@ -56061,7 +56978,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             __pyx_t_18 = (__pyx_v_f_x_low < 0);
             if (__pyx_t_18) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1752
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1802
  *                                     f_x_low = f_x_low - 1
  *                             if f_x_low < 0:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -56073,7 +56990,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L98:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1754
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1804
  *                                 met_constraints = 0
  * 
  *                             f_x_high = f_high+self.train_min_gap_size             # <<<<<<<<<<<<<<
@@ -56082,7 +56999,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             __pyx_v_f_x_high = (__pyx_v_f_high + __pyx_v_self->train_min_gap_size);
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1755
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
  * 
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             if self.tight_phrases:             # <<<<<<<<<<<<<<
@@ -56091,7 +57008,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_self->tight_phrases) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1756
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1806
  *                             f_x_high = f_high+self.train_min_gap_size
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:             # <<<<<<<<<<<<<<
@@ -56108,7 +57025,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (!__pyx_t_7) break;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1757
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1807
  *                             if self.tight_phrases:
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1             # <<<<<<<<<<<<<<
@@ -56121,7 +57038,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L99:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1758
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1808
  *                                 while f_x_high <= f_sent_len and f_links_low[f_x_high-1] == -1:
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_x_low > self.train_max_initial_size:             # <<<<<<<<<<<<<<
@@ -56137,7 +57054,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_9) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1759
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1809
  *                                     f_x_high = f_x_high + 1
  *                             if f_x_high > f_sent_len or f_x_high - f_x_low > self.train_max_initial_size:
  *                                 met_constraints = 0             # <<<<<<<<<<<<<<
@@ -56149,7 +57066,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             __pyx_L102:;
 
-            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1761
+            /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1811
  *                                 met_constraints = 0
  * 
  *                             if (met_constraints and             # <<<<<<<<<<<<<<
@@ -56158,17 +57075,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
             if (__pyx_v_met_constraints) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1762
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1812
  * 
  *                             if (met_constraints and
  *                                 self.find_fixpoint(f_x_low, f_x_high,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  */
-              __pyx_t_1 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1762; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1812; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1766
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1816
  *                                                 e_low, e_high, &e_x_low, &e_x_high, &f_x_low, &f_x_high,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -56178,7 +57095,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               if (((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->find_fixpoint(__pyx_v_self, __pyx_v_f_x_low, __pyx_t_1, __pyx_v_f_links_low, __pyx_v_f_links_high, __pyx_v_e_links_low, __pyx_v_e_links_high, __pyx_v_e_low, __pyx_v_e_high, (&__pyx_v_e_x_low), (&__pyx_v_e_x_high), (&__pyx_v_f_x_low), (&__pyx_v_f_x_high), __pyx_v_f_sent_len, __pyx_v_e_sent_len, __pyx_v_self->train_max_initial_size, __pyx_v_self->train_max_initial_size, 1, 1, 2, 1, 1, 1, 1)) {
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1768
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1818
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 1, 1, 2, 1, 1, 1, 1) and
  *                                 ((not self.tight_phrases) or (f_links_low[f_x_low] != -1 and f_links_low[f_x_high-1] != -1)) and             # <<<<<<<<<<<<<<
@@ -56200,17 +57117,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 if (__pyx_t_7) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1769
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1819
  *                                                 1, 1, 2, 1, 1, 1, 1) and
  *                                 ((not self.tight_phrases) or (f_links_low[f_x_low] != -1 and f_links_low[f_x_high-1] != -1)) and
  *                                 self.find_fixpoint(f_x_low, f_low,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  */
-                  __pyx_t_15 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1769; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyInt_FromLong(__pyx_v_f_low); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1819; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_15);
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1773
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1823
  *                                                 -1, -1, e_gap_low, e_gap_high, f_gap_low, f_gap_high,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -56221,17 +57138,17 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                   if (__pyx_t_3) {
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1775
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1825
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 0, 0, 0, 0, 0, 0, 0) and
  *                                 self.find_fixpoint(f_high, f_x_high,             # <<<<<<<<<<<<<<
  *                                                 f_links_low, f_links_high, e_links_low, e_links_high,
  *                                                 -1, -1, e_gap_low+1+num_gaps, e_gap_high+1+num_gaps,
  */
-                    __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1775; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    __pyx_t_15 = PyInt_FromLong(__pyx_v_f_x_high); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1825; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     __Pyx_GOTREF(__pyx_t_15);
 
-                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1780
+                    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1830
  *                                                 f_gap_low+1+num_gaps, f_gap_high+1+num_gaps,
  *                                                 f_sent_len, e_sent_len,
  *                                                 self.train_max_initial_size, self.train_max_initial_size,             # <<<<<<<<<<<<<<
@@ -56259,7 +57176,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
             }
             if (__pyx_t_8) {
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1782
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1832
  *                                                 self.train_max_initial_size, self.train_max_initial_size,
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()             # <<<<<<<<<<<<<<
@@ -56268,7 +57185,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_clear(__pyx_v_fphr_arr);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1783
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1833
  *                                                 0, 0, 0, 0, 0, 0, 0)):
  *                                 fphr_arr._clear()
  *                                 i = 1             # <<<<<<<<<<<<<<
@@ -56277,35 +57194,35 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = 1;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1784
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1834
  *                                 fphr_arr._clear()
  *                                 i = 1
  *                                 self.findexes.reset()             # <<<<<<<<<<<<<<
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  */
-              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__reset); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1834; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_15 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1784; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1834; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1785
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1835
  *                                 i = 1
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  */
-              __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
-              __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1785; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_15); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1835; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1786
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1836
  *                                 self.findexes.reset()
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56314,7 +57231,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1787
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1837
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1             # <<<<<<<<<<<<<<
@@ -56323,27 +57240,27 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               __pyx_v_i = (__pyx_v_i + 1);
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1788
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1838
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)             # <<<<<<<<<<<<<<
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  */
-              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_1 = PyObject_GetAttr(((PyObject *)__pyx_v_self->findexes), __pyx_n_s__extend); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_1);
-              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_INCREF(((PyObject *)__pyx_v_self->findexes1));
               PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_self->findexes1));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_self->findexes1));
-              __pyx_t_14 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1788; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(__pyx_t_1, ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1838; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1789
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1839
  *                                 i = i+1
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:             # <<<<<<<<<<<<<<
@@ -56353,7 +57270,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               __pyx_t_3 = __pyx_v_phrase->n;
               for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_3; __pyx_v_j++) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1790
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1840
  *                                 self.findexes.extend(self.findexes1)
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):             # <<<<<<<<<<<<<<
@@ -56363,7 +57280,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_4 = __pyx_f_3_sa_sym_isvar((__pyx_v_phrase->syms[__pyx_v_j]));
                 if (__pyx_t_4) {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1791
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1841
  *                                 for j from 0 <= j < phrase.n:
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56372,7 +57289,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                   ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1792
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1842
  *                                     if sym_isvar(phrase.syms[j]):
  *                                         fphr_arr._append(sym_setindex(self.category, i))
  *                                         i = i + 1             # <<<<<<<<<<<<<<
@@ -56384,7 +57301,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 }
                 /*else*/ {
 
-                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1794
+                  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1844
  *                                         i = i + 1
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])             # <<<<<<<<<<<<<<
@@ -56396,7 +57313,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_L106:;
               }
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1795
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1845
  *                                     else:
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
@@ -56405,81 +57322,81 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
               ((struct __pyx_vtabstruct_3_sa_IntList *)__pyx_v_fphr_arr->__pyx_vtab)->_append(__pyx_v_fphr_arr, __pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i));
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1796
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1846
  *                                         fphr_arr._append(phrase.syms[j])
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))             # <<<<<<<<<<<<<<
  *                                 fphr = Phrase(fphr_arr)
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  */
-              __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1796; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyInt_FromLong(__pyx_f_3_sa_sym_setindex(__pyx_v_self->category, __pyx_v_i)); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1846; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
-              __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1796; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = __Pyx_PyObject_Append(((PyObject *)__pyx_v_self->findexes), __pyx_t_14); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1846; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_DECREF(__pyx_t_14); __pyx_t_14 = 0;
               __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1797
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1847
  *                                 fphr_arr._append(sym_setindex(self.category, i))
  *                                 self.findexes.append(sym_setindex(self.category, i))
  *                                 fphr = Phrase(fphr_arr)             # <<<<<<<<<<<<<<
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  */
-              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_15);
               __Pyx_INCREF(((PyObject *)__pyx_v_fphr_arr));
               PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr_arr));
               __Pyx_GIVEREF(((PyObject *)__pyx_v_fphr_arr));
-              __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_Phrase)), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1847; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
               __Pyx_DECREF(((PyObject *)__pyx_v_fphr));
               __pyx_v_fphr = ((struct __pyx_obj_3_sa_Phrase *)__pyx_t_14);
               __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1800
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1850
  *                                 phrase_list = self.extract_phrases(e_x_low, e_x_high, e_gap_low, e_gap_high, e_links_low, num_gaps+2,
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)             # <<<<<<<<<<<<<<
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)
  */
-              __pyx_t_14 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 2), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1798; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_14 = ((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->extract_phrases(__pyx_v_self, __pyx_v_e_x_low, __pyx_v_e_x_high, __pyx_v_e_gap_low, __pyx_v_e_gap_high, __pyx_v_e_links_low, (__pyx_v_num_gaps + 2), __pyx_v_f_x_low, __pyx_v_f_x_high, __pyx_v_f_gap_low, __pyx_v_f_gap_high, __pyx_v_f_links_low, __pyx_v_matching->sent_id, __pyx_v_e_sent_len, __pyx_v_e_sent_start); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1848; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __Pyx_GOTREF(__pyx_t_14);
               __Pyx_XDECREF(__pyx_v_phrase_list);
               __pyx_v_phrase_list = __pyx_t_14;
               __pyx_t_14 = 0;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1801
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1851
  *                                                     f_x_low, f_x_high, f_gap_low, f_gap_high, f_links_low,
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:             # <<<<<<<<<<<<<<
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  */
-              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1801; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1851; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
               __pyx_t_8 = (__pyx_t_13 > 0);
               if (__pyx_t_8) {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1802
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1852
  *                                                     matching.sent_id, e_sent_len, e_sent_start)
  *                                 if len(phrase_list) > 0:
  *                                     pair_count = 1.0 / len(phrase_list)             # <<<<<<<<<<<<<<
  *                                 else:
  *                                     pair_count = 0
  */
-                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = PyObject_Length(__pyx_v_phrase_list); if (unlikely(__pyx_t_13 == -1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1852; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 if (unlikely(__pyx_t_13 == 0)) {
                   PyErr_Format(PyExc_ZeroDivisionError, "float division");
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1852; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 }
                 __pyx_v_pair_count = (1.0 / __pyx_t_13);
                 goto __pyx_L107;
               }
               /*else*/ {
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1804
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1854
  *                                     pair_count = 1.0 / len(phrase_list)
  *                                 else:
  *                                     pair_count = 0             # <<<<<<<<<<<<<<
@@ -56490,7 +57407,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
               }
               __pyx_L107:;
 
-              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1805
+              /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1855
  *                                 else:
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:             # <<<<<<<<<<<<<<
@@ -56501,7 +57418,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_t_14 = __pyx_v_phrase_list; __Pyx_INCREF(__pyx_t_14); __pyx_t_13 = 0;
                 __pyx_t_16 = NULL;
               } else {
-                __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_13 = -1; __pyx_t_14 = PyObject_GetIter(__pyx_v_phrase_list); if (unlikely(!__pyx_t_14)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_14);
                 __pyx_t_16 = Py_TYPE(__pyx_t_14)->tp_iternext;
               }
@@ -56509,23 +57426,23 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 if (!__pyx_t_16 && PyList_CheckExact(__pyx_t_14)) {
                   if (__pyx_t_13 >= PyList_GET_SIZE(__pyx_t_14)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyList_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 } else if (!__pyx_t_16 && PyTuple_CheckExact(__pyx_t_14)) {
                   if (__pyx_t_13 >= PyTuple_GET_SIZE(__pyx_t_14)) break;
                   #if CYTHON_COMPILING_IN_CPYTHON
-                  __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PyTuple_GET_ITEM(__pyx_t_14, __pyx_t_13); __Pyx_INCREF(__pyx_t_15); __pyx_t_13++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #else
-                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_15 = PySequence_ITEM(__pyx_t_14, __pyx_t_13); __pyx_t_13++; if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   #endif
                 } else {
                   __pyx_t_15 = __pyx_t_16(__pyx_t_14);
                   if (unlikely(!__pyx_t_15)) {
                     if (PyErr_Occurred()) {
                       if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                      else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                     }
                     break;
                   }
@@ -56541,7 +57458,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   if (unlikely(size != 2)) {
                     if (size > 2) __Pyx_RaiseTooManyValuesError(2);
                     else if (size >= 0) __Pyx_RaiseNeedMoreValuesError(size);
-                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                    {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   #if CYTHON_COMPILING_IN_CPYTHON
                   if (likely(PyTuple_CheckExact(sequence))) {
@@ -56554,14 +57471,14 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                   __Pyx_INCREF(__pyx_t_1);
                   __Pyx_INCREF(__pyx_t_2);
                   #else
-                  __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_1 = PySequence_ITEM(sequence, 0); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_2 = PySequence_ITEM(sequence, 1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 } else
                 {
                   Py_ssize_t index = -1;
-                  __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  __pyx_t_10 = PyObject_GetIter(__pyx_t_15); if (unlikely(!__pyx_t_10)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __Pyx_GOTREF(__pyx_t_10);
                   __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                   __pyx_t_17 = Py_TYPE(__pyx_t_10)->tp_iternext;
@@ -56569,7 +57486,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                   __Pyx_GOTREF(__pyx_t_2);
-                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  if (__Pyx_IternextUnpackEndCheck(__pyx_t_17(__pyx_t_10), 2) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                   __pyx_t_17 = NULL;
                   __Pyx_DECREF(__pyx_t_10); __pyx_t_10 = 0;
                   goto __pyx_L111_unpacking_done;
@@ -56577,7 +57494,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
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                   __pyx_t_17 = NULL;
                   if (__Pyx_IterFinish() == 0) __Pyx_RaiseNeedMoreValuesError(index);
-                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1805; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                  {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1855; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 __Pyx_XDECREF(__pyx_v_phrase2);
@@ -56587,7 +57504,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __pyx_v_eindexes = __pyx_t_2;
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1806
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1856
  *                                     pair_count = 0
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als4 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)             # <<<<<<<<<<<<<<
@@ -56596,31 +57513,31 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
                 __pyx_t_15 = ((PyObject *)__pyx_v_self->findexes);
                 __Pyx_INCREF(__pyx_t_15);
-                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = ((PyObject *)((struct __pyx_vtabstruct_3_sa_HieroCachingRuleFactory *)__pyx_v_self->__pyx_vtab)->create_alignments(__pyx_v_self, __pyx_v_sent_links, __pyx_v_num_links, __pyx_t_15, __pyx_v_eindexes)); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1856; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
                 __Pyx_DECREF(__pyx_t_15); __pyx_t_15 = 0;
                 __Pyx_XDECREF(((PyObject *)__pyx_v_als4));
                 __pyx_v_als4 = ((struct __pyx_obj_3_sa_IntList *)__pyx_t_2);
                 __pyx_t_2 = 0;
 
-                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1807
+                /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1857
  *                                 for phrase2, eindexes in phrase_list:
  *                                     als4 = self.create_alignments(sent_links,num_links,self.findexes,eindexes)
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als4)))             # <<<<<<<<<<<<<<
  *             else:
  *                 reason_for_failure = "Unable to extract basic phrase"
  */
-                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_2 = PyFloat_FromDouble(__pyx_v_pair_count); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_2);
-                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(1); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                 __Pyx_INCREF(((PyObject *)__pyx_v_als4));
                 PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_als4));
                 __Pyx_GIVEREF(((PyObject *)__pyx_v_als4));
-                __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)(&PyTuple_Type))), ((PyObject *)__pyx_t_15), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
-                __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_15 = PyTuple_New(4); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_15);
                 __Pyx_INCREF(((PyObject *)__pyx_v_fphr));
                 PyTuple_SET_ITEM(__pyx_t_15, 0, ((PyObject *)__pyx_v_fphr));
@@ -56634,7 +57551,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
                 __Pyx_GIVEREF(__pyx_t_1);
                 __pyx_t_2 = 0;
                 __pyx_t_1 = 0;
-                __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1807; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+                __pyx_t_1 = __Pyx_PyObject_Append(__pyx_v_extracts, ((PyObject *)__pyx_t_15)); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1857; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                 __Pyx_GOTREF(__pyx_t_1);
                 __Pyx_DECREF(((PyObject *)__pyx_t_15)); __pyx_t_15 = 0;
                 __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
@@ -56656,7 +57573,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
     }
     /*else*/ {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1809
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1859
  *                                     extracts.append((fphr, phrase2, pair_count, tuple(als4)))
  *             else:
  *                 reason_for_failure = "Unable to extract basic phrase"             # <<<<<<<<<<<<<<
@@ -56672,7 +57589,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
   }
   __pyx_L33:;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1811
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
  *                 reason_for_failure = "Unable to extract basic phrase"
  * 
  *         free(sent_links)             # <<<<<<<<<<<<<<
@@ -56681,7 +57598,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_sent_links);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1812
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1862
  * 
  *         free(sent_links)
  *         free(f_links_low)             # <<<<<<<<<<<<<<
@@ -56690,7 +57607,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_links_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1813
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1863
  *         free(sent_links)
  *         free(f_links_low)
  *         free(f_links_high)             # <<<<<<<<<<<<<<
@@ -56699,7 +57616,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_links_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1814
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1864
  *         free(f_links_low)
  *         free(f_links_high)
  *         free(e_links_low)             # <<<<<<<<<<<<<<
@@ -56708,7 +57625,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_links_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1815
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1865
  *         free(f_links_high)
  *         free(e_links_low)
  *         free(e_links_high)             # <<<<<<<<<<<<<<
@@ -56717,7 +57634,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_links_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1816
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1866
  *         free(e_links_low)
  *         free(e_links_high)
  *         free(f_gap_low)             # <<<<<<<<<<<<<<
@@ -56726,7 +57643,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_gap_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1817
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1867
  *         free(e_links_high)
  *         free(f_gap_low)
  *         free(f_gap_high)             # <<<<<<<<<<<<<<
@@ -56735,7 +57652,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_f_gap_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1818
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1868
  *         free(f_gap_low)
  *         free(f_gap_high)
  *         free(e_gap_low)             # <<<<<<<<<<<<<<
@@ -56744,7 +57661,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_gap_low);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1819
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1869
  *         free(f_gap_high)
  *         free(e_gap_low)
  *         free(e_gap_high)             # <<<<<<<<<<<<<<
@@ -56753,7 +57670,7 @@ static PyObject *__pyx_f_3_sa_23HieroCachingRuleFactory_extract(struct __pyx_obj
  */
   free(__pyx_v_e_gap_high);
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1821
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1871
  *         free(e_gap_high)
  * 
  *         return extracts             # <<<<<<<<<<<<<<
@@ -56825,16 +57742,16 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_26add_instance(PyObject
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         if (likely((values[1] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__e_words)) != 0)) kw_args--;
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-          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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         if (likely((values[2] = PyDict_GetItem(__pyx_kwds, __pyx_n_s__alignment)) != 0)) kw_args--;
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-          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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       if (unlikely(kw_args > 0)) {
-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "add_instance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "add_instance") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-  __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("add_instance", 1, 3, 3, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -56903,46 +57820,46 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract
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+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 1); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 2); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 3); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 4); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 5); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 6); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 7); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 7); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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+          __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, 8); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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-        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "extract") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+        if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "extract") < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -56969,7 +57886,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract
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-  __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1861; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
+  __Pyx_RaiseArgtupleInvalid("extract", 1, 9, 9, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
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@@ -56980,7 +57897,7 @@ static PyObject *__pyx_pw_3_sa_23HieroCachingRuleFactory_12add_instance_1extract
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 }
 
-/* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
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-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *__pyx_outer_scope;
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *__pyx_cur_scope;
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@@ -57023,36 +57940,36 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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-  __pyx_outer_scope = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *) __Pyx_CyFunction_GetClosure(__pyx_self);
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1863
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-  if (unlikely(!__pyx_cur_scope->__pyx_v_f_len)) { __Pyx_RaiseClosureNameError("f_len"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1863; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
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+  __pyx_t_2 = PyObject_RichCompare(__pyx_v_f_j, __pyx_t_1, Py_GT); __Pyx_XGOTREF(__pyx_t_2); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1915; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1864
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1876
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1887
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1893
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+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_1); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -57669,17 +58586,17 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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       __pyx_v_new_min_bound = __pyx_t_4;
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-      __pyx_t_11 = __Pyx_PyInt_AsInt(__pyx_v_i); if (unlikely((__pyx_t_11 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_11 = __Pyx_PyInt_AsInt(__pyx_v_i); if (unlikely((__pyx_t_11 == (int)-1) && PyErr_Occurred())) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1949; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
     }
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1897
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1949
  *                         return
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-    __pyx_t_4 = PyInt_FromLong(__pyx_t_11); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1897; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyInt_FromLong(__pyx_t_11); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1949; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   }
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1902
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1954
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-  __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_v_nt_open); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1902; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_v_nt_open); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_t_3 = (!__pyx_t_6);
   if (__pyx_t_3) {
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1903
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1955
  *             # Extract, extend with word (unless non-terminal open)
  *             if not nt_open:
  *                 nt_collision = False             # <<<<<<<<<<<<<<
@@ -57707,20 +58624,20 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
  */
     __pyx_v_nt_collision = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1904
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1956
  *             if not nt_open:
  *                 nt_collision = False
  *                 for link in al[f_j]:             # <<<<<<<<<<<<<<
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-    __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+    __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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     if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
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       __pyx_t_12 = NULL;
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-      __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
       __pyx_t_12 = Py_TYPE(__pyx_t_2)->tp_iternext;
     }
@@ -57729,23 +58646,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #endif
       } else if (!__pyx_t_12 && PyTuple_CheckExact(__pyx_t_2)) {
         if (__pyx_t_7 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
         #if CYTHON_COMPILING_IN_CPYTHON
-        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         #else
-        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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       } else {
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             if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1904; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+            else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1956; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           }
           break;
         }
@@ -57755,21 +58672,21 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
       __pyx_v_link = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1905
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1957
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  *                 for link in al[f_j]:
  *                     if e_nt_cover[link]:             # <<<<<<<<<<<<<<
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-      if (unlikely(!__pyx_cur_scope->__pyx_v_e_nt_cover)) { __Pyx_RaiseClosureNameError("e_nt_cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
-      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_e_nt_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      if (unlikely(!__pyx_cur_scope->__pyx_v_e_nt_cover)) { __Pyx_RaiseClosureNameError("e_nt_cover"); {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;} }
+      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_e_nt_cover, __pyx_v_link); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
-      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1905; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_3 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_3 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1957; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       if (__pyx_t_3) {
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1906
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1958
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  *                     if e_nt_cover[link]:
  *                         nt_collision = True             # <<<<<<<<<<<<<<
@@ -57783,7 +58700,7 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
     }
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
 
-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1909
+    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1961
  *                 # Non-terminal collisions block word extraction and extension, but
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  *                 if not nt_collision and wc < self.max_length:             # <<<<<<<<<<<<<<
@@ -57792,11 +58709,11 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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     __pyx_t_3 = (!__pyx_v_nt_collision);
     if (__pyx_t_3) {
-      __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_length); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_2 = PyInt_FromLong(__pyx_cur_scope->__pyx_v_self->max_length); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_2);
-      __pyx_t_4 = PyObject_RichCompare(__pyx_v_wc, __pyx_t_2, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_RichCompare(__pyx_v_wc, __pyx_t_2, Py_LT); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
-      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1909; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_4); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1961; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
       __pyx_t_5 = __pyx_t_6;
     } else {
@@ -57804,32 +58721,32 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
     }
     if (__pyx_t_5) {
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1910
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1962
  *                 # may be okay for continuing non-terminals
  *                 if not nt_collision and wc < self.max_length:
  *                     plus_links = []             # <<<<<<<<<<<<<<
  *                     for link in al[f_j]:
  *                         plus_links.append((f_j, link))
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-      __pyx_t_4 = PyList_New(0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1910; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyList_New(0); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1962; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       __pyx_v_plus_links = __pyx_t_4;
       __pyx_t_4 = 0;
 
-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1911
+      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1963
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  *                     for link in al[f_j]:             # <<<<<<<<<<<<<<
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-      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+      __pyx_t_4 = PyObject_GetItem(__pyx_cur_scope->__pyx_v_al, __pyx_v_f_j); if (!__pyx_t_4) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
       __Pyx_GOTREF(__pyx_t_4);
       if (PyList_CheckExact(__pyx_t_4) || PyTuple_CheckExact(__pyx_t_4)) {
         __pyx_t_2 = __pyx_t_4; __Pyx_INCREF(__pyx_t_2); __pyx_t_7 = 0;
         __pyx_t_12 = NULL;
       } else {
-        __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+        __pyx_t_7 = -1; __pyx_t_2 = PyObject_GetIter(__pyx_t_4); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
         __Pyx_GOTREF(__pyx_t_2);
         __pyx_t_12 = Py_TYPE(__pyx_t_2)->tp_iternext;
       }
@@ -57838,23 +58755,23 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
         if (!__pyx_t_12 && PyList_CheckExact(__pyx_t_2)) {
           if (__pyx_t_7 >= PyList_GET_SIZE(__pyx_t_2)) break;
           #if CYTHON_COMPILING_IN_CPYTHON
-          __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PyList_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #else
-          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #endif
         } else if (!__pyx_t_12 && PyTuple_CheckExact(__pyx_t_2)) {
           if (__pyx_t_7 >= PyTuple_GET_SIZE(__pyx_t_2)) break;
           #if CYTHON_COMPILING_IN_CPYTHON
-          __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PyTuple_GET_ITEM(__pyx_t_2, __pyx_t_7); __Pyx_INCREF(__pyx_t_4); __pyx_t_7++; if (unlikely(0 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #else
-          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+          __pyx_t_4 = PySequence_ITEM(__pyx_t_2, __pyx_t_7); __pyx_t_7++; if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
           #endif
         } else {
           __pyx_t_4 = __pyx_t_12(__pyx_t_2);
           if (unlikely(!__pyx_t_4)) {
             if (PyErr_Occurred()) {
               if (likely(PyErr_ExceptionMatches(PyExc_StopIteration))) PyErr_Clear();
-              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1911; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+              else {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1963; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
             }
             break;
           }
@@ -57864,14 +58781,14 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
         __pyx_v_link = __pyx_t_4;
         __pyx_t_4 = 0;
 
-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1912
+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1964
  *                     plus_links = []
  *                     for link in al[f_j]:
  *                         plus_links.append((f_j, link))             # <<<<<<<<<<<<<<
  *                         cover[link] += 1
  *                     links.append(plus_links)
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1919
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+        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1972
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1922
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1924
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+    __pyx_t_8 = __Pyx_GetItemInt(__pyx_v_nt, -1, sizeof(long), PyInt_FromLong); if (!__pyx_t_8) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1976; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1925
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+      __pyx_t_6 = __Pyx_PyObject_IsTrue(__pyx_t_8); if (unlikely(__pyx_t_6 < 0)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1986; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1935
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-        /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1936
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1937
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1938
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1939
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1940
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+      __pyx_t_4 = PyObject_RichCompare(__pyx_v_f_j, __pyx_v_new_min_bound, Py_GE); __Pyx_XGOTREF(__pyx_t_4); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1941
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1949
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+      __pyx_t_15 = PyTuple_New(3); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2001; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1961
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+    __pyx_t_15 = PyTuple_New(3); if (unlikely(!__pyx_t_15)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2015; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -59189,22 +60106,22 @@ static PyObject *__pyx_pf_3_sa_23HieroCachingRuleFactory_12add_instance_extract(
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1964
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2001
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2002
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2009
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2010
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2011
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2012
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-      /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2013
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2014
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2015
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2018
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2072
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2078
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   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2079
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2136
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2080
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-    /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2093
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2094
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   }
@@ -74459,6 +76714,9 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_19_input(PyObject *o) {
   tmp = ((PyObject*)p->__pyx_v_f);
   p->__pyx_v_f = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_syms);
+  p->__pyx_v_f_syms = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_fcount);
   p->__pyx_v_fcount = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -74474,6 +76732,9 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_19_input(PyObject *o) {
   tmp = ((PyObject*)p->__pyx_v_fwords);
   p->__pyx_v_fwords = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_genexpr);
+  p->__pyx_v_genexpr = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_hiero_phrase);
   p->__pyx_v_hiero_phrase = ((struct __pyx_obj_3_sa_Phrase *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -74486,6 +76747,12 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_19_input(PyObject *o) {
   tmp = ((PyObject*)p->__pyx_v_key);
   p->__pyx_v_key = ((PyObject*)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_lex_i);
+  p->__pyx_v_lex_i = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_lex_j);
+  p->__pyx_v_lex_j = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_loc);
   p->__pyx_v_loc = Py_None; Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -74537,6 +76804,9 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_19_input(PyObject *o) {
   tmp = ((PyObject*)p->__pyx_v_scores);
   p->__pyx_v_scores = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_seen_phrases);
+  p->__pyx_v_seen_phrases = ((PyObject*)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
@@ -74734,11 +77004,218 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_19_input = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o);
+  p->__pyx_outer_scope = 0;
+  p->__pyx_v_word = 0;
+  p->__pyx_t_0 = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  Py_CLEAR(p->__pyx_outer_scope);
+  Py_CLEAR(p->__pyx_v_word);
+  Py_CLEAR(p->__pyx_t_0);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_genexpr(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  if (p->__pyx_outer_scope) {
+    e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
+  }
+  if (p->__pyx_v_word) {
+    e = (*v)(p->__pyx_v_word, a); if (e) return e;
+  }
+  if (p->__pyx_t_0) {
+    e = (*v)(p->__pyx_t_0, a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_20_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_outer_scope);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_19_input *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_word);
+  p->__pyx_v_word = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_t_0);
+  p->__pyx_t_0 = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_20_genexpr[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_genexpr = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_genexpr = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20_genexpr = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_genexpr = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_genexpr = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_20_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_20_genexpr), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_genexpr, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_20_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_20_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_20_genexpr, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_20_genexpr, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_20_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_20_genexpr, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_20_genexpr, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_20_genexpr, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_21_add_instance(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o);
   p->__pyx_v_al = 0;
   p->__pyx_v_cover = 0;
   p->__pyx_v_e_nt_cover = 0;
@@ -74753,8 +77230,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance(PyTypeObje
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   Py_CLEAR(p->__pyx_v_al);
   Py_CLEAR(p->__pyx_v_cover);
   Py_CLEAR(p->__pyx_v_e_nt_cover);
@@ -74769,9 +77246,9 @@ static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance(PyObject *o
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_add_instance(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   if (p->__pyx_v_al) {
     e = (*v)(p->__pyx_v_al, a); if (e) return e;
   }
@@ -74808,8 +77285,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance(PyObject *o
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_add_instance(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_al);
   p->__pyx_v_al = Py_None; Py_INCREF(Py_None);
@@ -74847,11 +77324,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_20_add_instance[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21_add_instance[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_add_instance = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_add_instance = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -74909,7 +77386,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_add_instance = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_add_instance = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -74922,13 +77399,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_20_add_instance
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_20_add_instance = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21_add_instance = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_add_instance = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_add_instance = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -74949,12 +77426,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_add_instance = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_20_add_instance"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_20_add_instance), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21_add_instance"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21_add_instance), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_20_add_instance, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_add_instance, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -74964,24 +77441,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_20_add_instance, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_20_add_instance, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_20_add_instance, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_21_add_instance, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_21_add_instance, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_21_add_instance, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_20_add_instance, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_21_add_instance, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_20_add_instance, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_20_add_instance, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_21_add_instance, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_21_add_instance, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_20_add_instance, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_21_add_instance, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -74991,7 +77468,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_20_add_instance, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_21_add_instance, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75005,26 +77482,26 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_20_add_instance = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_21_form_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_form_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o);
   p->__pyx_v_links = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_form_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   Py_CLEAR(p->__pyx_v_links);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_form_rule(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_form_rule(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   if (p->__pyx_v_links) {
     e = (*v)(p->__pyx_v_links, a); if (e) return e;
   }
@@ -75034,8 +77511,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_21_form_rule(PyObject *o, v
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_form_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_links);
   p->__pyx_v_links = Py_None; Py_INCREF(Py_None);
@@ -75046,11 +77523,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_21_form_rule[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_22_form_rule[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_form_rule = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_form_rule = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75108,7 +77585,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_form_rule = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_form_rule = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75121,13 +77598,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_21_form_rule =
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_21_form_rule = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_22_form_rule = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_form_rule = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22_form_rule = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75148,12 +77625,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_form_rule = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_21_form_rule"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_22_form_rule"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_21_form_rule, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_form_rule, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75163,24 +77640,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_21_form_rule, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_21_form_rule, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_21_form_rule, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_22_form_rule, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_22_form_rule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_22_form_rule, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_21_form_rule, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_22_form_rule, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_21_form_rule, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_21_form_rule, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_22_form_rule, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_22_form_rule, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_21_form_rule, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_22_form_rule, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75190,7 +77667,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_21_form_rule, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_22_form_rule, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75204,11 +77681,11 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_21_form_rule = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_23_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_i = 0;
   p->__pyx_v_j = 0;
@@ -75216,8 +77693,8 @@ static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr(PyTypeObject *t
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
   Py_CLEAR(p->__pyx_outer_scope);
   Py_CLEAR(p->__pyx_v_i);
   Py_CLEAR(p->__pyx_v_j);
@@ -75225,9 +77702,9 @@ static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -75243,11 +77720,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr(PyObject *o, vis
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_21_form_rule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_22_form_rule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_i);
   p->__pyx_v_i = Py_None; Py_INCREF(Py_None);
@@ -75261,11 +77738,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_22_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_23_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75323,7 +77800,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75336,13 +77813,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_22_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_22_genexpr = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_23_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75363,12 +77840,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_22_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_22_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_23_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_23_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_22_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75378,24 +77855,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_22_genexpr, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_22_genexpr, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_22_genexpr, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_23_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_23_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_23_genexpr, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_22_genexpr, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_23_genexpr, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_22_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_22_genexpr, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_23_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_23_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_22_genexpr, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_23_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75405,7 +77882,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_22_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_23_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75419,26 +77896,26 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_22_genexpr = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_23_fmt_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_24_fmt_rule(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o);
   p->__pyx_v_a = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   Py_CLEAR(p->__pyx_v_a);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   if (p->__pyx_v_a) {
     e = (*v)(p->__pyx_v_a, a); if (e) return e;
   }
@@ -75448,8 +77925,8 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o, vi
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_fmt_rule(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_a);
   p->__pyx_v_a = Py_None; Py_INCREF(Py_None);
@@ -75460,11 +77937,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_23_fmt_rule[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_24_fmt_rule[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_fmt_rule = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_fmt_rule = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75522,7 +77999,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_23_fmt_rule = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_fmt_rule = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75535,13 +78012,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_23_fmt_rule = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_fmt_rule = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_fmt_rule = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_fmt_rule = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75562,12 +78039,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_23_fmt_rule = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_fmt_rule = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_23_fmt_rule"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_24_fmt_rule"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75577,24 +78054,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_23_fmt_rule, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_23_fmt_rule, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_23_fmt_rule, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_24_fmt_rule, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_24_fmt_rule, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_24_fmt_rule, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_23_fmt_rule, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_24_fmt_rule, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75604,7 +78081,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_23_fmt_rule, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_24_fmt_rule, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75618,28 +78095,28 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_23_fmt_rule = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_24_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_25_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_packed = 0;
   p->__pyx_t_0 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_25_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   Py_CLEAR(p->__pyx_outer_scope);
   Py_CLEAR(p->__pyx_v_packed);
   Py_CLEAR(p->__pyx_t_0);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_25_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -75652,11 +78129,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr(PyObject *o, vis
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_25_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_23_fmt_rule *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_24_fmt_rule *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_packed);
   p->__pyx_v_packed = Py_None; Py_INCREF(Py_None);
@@ -75667,11 +78144,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_24_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_25_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75729,7 +78206,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_24_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75742,13 +78219,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_24_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_24_genexpr = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_25_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75769,12 +78246,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_24_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_24_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_24_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_25_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_25_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_24_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_25_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75784,24 +78261,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_24_genexpr, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_24_genexpr, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_24_genexpr, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_25_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_25_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_25_genexpr, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_24_genexpr, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_25_genexpr, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_24_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_24_genexpr, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_25_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_25_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_24_genexpr, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_25_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -75811,7 +78288,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_24_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_25_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -75825,32 +78302,255 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_24_genexpr = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_25___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_26_get_f_phrases(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o);
+  p->__pyx_v_extract = 0;
+  p->__pyx_v_f_len = 0;
+  p->__pyx_v_f_words = 0;
+  p->__pyx_v_phrases = 0;
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_26_get_f_phrases(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  Py_CLEAR(p->__pyx_v_extract);
+  Py_CLEAR(p->__pyx_v_f_len);
+  Py_CLEAR(p->__pyx_v_f_words);
+  Py_CLEAR(p->__pyx_v_phrases);
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_25___iter__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_26_get_f_phrases(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  if (p->__pyx_v_extract) {
+    e = (*v)(p->__pyx_v_extract, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_len) {
+    e = (*v)(p->__pyx_v_f_len, a); if (e) return e;
+  }
+  if (p->__pyx_v_f_words) {
+    e = (*v)(p->__pyx_v_f_words, a); if (e) return e;
+  }
+  if (p->__pyx_v_phrases) {
+    e = (*v)(p->__pyx_v_phrases, a); if (e) return e;
+  }
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__ *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_26_get_f_phrases(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases *)o;
+  PyObject* tmp;
+  tmp = ((PyObject*)p->__pyx_v_extract);
+  p->__pyx_v_extract = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_len);
+  p->__pyx_v_f_len = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_f_words);
+  p->__pyx_v_f_words = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_phrases);
+  p->__pyx_v_phrases = Py_None; Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  tmp = ((PyObject*)p->__pyx_v_self);
+  p->__pyx_v_self = ((struct __pyx_obj_3_sa_HieroCachingRuleFactory *)Py_None); Py_INCREF(Py_None);
+  Py_XDECREF(tmp);
+  return 0;
+}
+
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_26_get_f_phrases[] = {
+  {0, 0, 0, 0}
+};
+
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26_get_f_phrases = {
+  0, /*nb_add*/
+  0, /*nb_subtract*/
+  0, /*nb_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_divide*/
+  #endif
+  0, /*nb_remainder*/
+  0, /*nb_divmod*/
+  0, /*nb_power*/
+  0, /*nb_negative*/
+  0, /*nb_positive*/
+  0, /*nb_absolute*/
+  0, /*nb_nonzero*/
+  0, /*nb_invert*/
+  0, /*nb_lshift*/
+  0, /*nb_rshift*/
+  0, /*nb_and*/
+  0, /*nb_xor*/
+  0, /*nb_or*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_coerce*/
+  #endif
+  0, /*nb_int*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_long*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*nb_float*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_oct*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_hex*/
+  #endif
+  0, /*nb_inplace_add*/
+  0, /*nb_inplace_subtract*/
+  0, /*nb_inplace_multiply*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*nb_inplace_divide*/
+  #endif
+  0, /*nb_inplace_remainder*/
+  0, /*nb_inplace_power*/
+  0, /*nb_inplace_lshift*/
+  0, /*nb_inplace_rshift*/
+  0, /*nb_inplace_and*/
+  0, /*nb_inplace_xor*/
+  0, /*nb_inplace_or*/
+  0, /*nb_floor_divide*/
+  0, /*nb_true_divide*/
+  0, /*nb_inplace_floor_divide*/
+  0, /*nb_inplace_true_divide*/
+  #if PY_VERSION_HEX >= 0x02050000
+  0, /*nb_index*/
+  #endif
+};
+
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26_get_f_phrases = {
+  0, /*sq_length*/
+  0, /*sq_concat*/
+  0, /*sq_repeat*/
+  0, /*sq_item*/
+  0, /*sq_slice*/
+  0, /*sq_ass_item*/
+  0, /*sq_ass_slice*/
+  0, /*sq_contains*/
+  0, /*sq_inplace_concat*/
+  0, /*sq_inplace_repeat*/
+};
+
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_26_get_f_phrases = {
+  0, /*mp_length*/
+  0, /*mp_subscript*/
+  0, /*mp_ass_subscript*/
+};
+
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26_get_f_phrases = {
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getreadbuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getwritebuffer*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getsegcount*/
+  #endif
+  #if PY_MAJOR_VERSION < 3
+  0, /*bf_getcharbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_getbuffer*/
+  #endif
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*bf_releasebuffer*/
+  #endif
+};
+
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26_get_f_phrases = {
+  PyVarObject_HEAD_INIT(0, 0)
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_26_get_f_phrases"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_26_get_f_phrases), /*tp_basicsize*/
+  0, /*tp_itemsize*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_dealloc*/
+  0, /*tp_print*/
+  0, /*tp_getattr*/
+  0, /*tp_setattr*/
+  #if PY_MAJOR_VERSION < 3
+  0, /*tp_compare*/
+  #else
+  0, /*reserved*/
+  #endif
+  0, /*tp_repr*/
+  &__pyx_tp_as_number___pyx_scope_struct_26_get_f_phrases, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_26_get_f_phrases, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_26_get_f_phrases, /*tp_as_mapping*/
+  0, /*tp_hash*/
+  0, /*tp_call*/
+  0, /*tp_str*/
+  0, /*tp_getattro*/
+  0, /*tp_setattro*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_26_get_f_phrases, /*tp_as_buffer*/
+  Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
+  0, /*tp_doc*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_clear*/
+  0, /*tp_richcompare*/
+  0, /*tp_weaklistoffset*/
+  0, /*tp_iter*/
+  0, /*tp_iternext*/
+  __pyx_methods_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_methods*/
+  0, /*tp_members*/
+  0, /*tp_getset*/
+  0, /*tp_base*/
+  0, /*tp_dict*/
+  0, /*tp_descr_get*/
+  0, /*tp_descr_set*/
+  0, /*tp_dictoffset*/
+  0, /*tp_init*/
+  0, /*tp_alloc*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_26_get_f_phrases, /*tp_new*/
+  0, /*tp_free*/
+  0, /*tp_is_gc*/
+  0, /*tp_bases*/
+  0, /*tp_mro*/
+  0, /*tp_cache*/
+  0, /*tp_subclasses*/
+  0, /*tp_weaklist*/
+  0, /*tp_del*/
+  #if PY_VERSION_HEX >= 0x02060000
+  0, /*tp_version_tag*/
+  #endif
+};
+
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_27___iter__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p;
+  PyObject *o = (*t->tp_alloc)(t, 0);
+  if (!o) return 0;
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o);
+  p->__pyx_v_self = 0;
+  return o;
+}
+
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_27___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o;
+  Py_CLEAR(p->__pyx_v_self);
+  (*Py_TYPE(o)->tp_free)(o);
+}
+
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27___iter__(PyObject *o, visitproc v, void *a) {
+  int e;
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o;
+  if (p->__pyx_v_self) {
+    e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
+  }
+  return 0;
+}
+
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_27___iter__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
@@ -75858,11 +78558,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_25___iter__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_27___iter__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25___iter__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27___iter__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -75920,7 +78620,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_25___iter__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25___iter__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27___iter__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -75933,13 +78633,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_25___iter__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_25___iter__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_27___iter__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25___iter__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27___iter__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -75960,12 +78660,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_25___iter__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27___iter__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_25___iter__"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_25___iter__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_27___iter__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_27___iter__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_25___iter__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_27___iter__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -75975,24 +78675,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_25___iter__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_25___iter__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_25___iter__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_27___iter__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_27___iter__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_27___iter__, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_25___iter__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_27___iter__, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_25___iter__, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_25___iter__, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_27___iter__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_27___iter__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_25___iter__, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_27___iter__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76002,7 +78702,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_25___iter__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_27___iter__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76016,32 +78716,32 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_25___iter__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_26___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_28___str__(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)o);
   p->__pyx_v_self = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_28___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)o;
   Py_CLEAR(p->__pyx_v_self);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_26___str__(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_28___str__(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)o;
   if (p->__pyx_v_self) {
     e = (*v)(((PyObject*)p->__pyx_v_self), a); if (e) return e;
   }
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_28___str__(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *p = (struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_v_self);
   p->__pyx_v_self = ((struct __pyx_obj_3_sa_FeatureVector *)Py_None); Py_INCREF(Py_None);
@@ -76049,11 +78749,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_26___str__[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_28___str__[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26___str__ = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_28___str__ = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -76111,7 +78811,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_26___str__ = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26___str__ = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_28___str__ = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -76124,13 +78824,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_26___str__ = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_26___str__ = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_28___str__ = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26___str__ = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_28___str__ = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -76151,12 +78851,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_26___str__ = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_28___str__ = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_26___str__"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_26___str__), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_28___str__"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_28___str__), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_26___str__, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_28___str__, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -76166,24 +78866,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_26___str__, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_26___str__, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_26___str__, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_28___str__, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_28___str__, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_28___str__, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_26___str__, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_28___str__, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_26___str__, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_26___str__, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_28___str__, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_28___str__, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_26___str__, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_28___str__, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76193,7 +78893,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_26___str__, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_28___str__, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76207,28 +78907,28 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_26___str__ = {
   #endif
 };
 
-static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_27_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p;
+static PyObject *__pyx_tp_new_3_sa___pyx_scope_struct_29_genexpr(PyTypeObject *t, CYTHON_UNUSED PyObject *a, CYTHON_UNUSED PyObject *k) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p;
   PyObject *o = (*t->tp_alloc)(t, 0);
   if (!o) return 0;
-  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o);
+  p = ((struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)o);
   p->__pyx_outer_scope = 0;
   p->__pyx_v_feat = 0;
   p->__pyx_t_0 = 0;
   return o;
 }
 
-static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+static void __pyx_tp_dealloc_3_sa___pyx_scope_struct_29_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)o;
   Py_CLEAR(p->__pyx_outer_scope);
   Py_CLEAR(p->__pyx_v_feat);
   Py_CLEAR(p->__pyx_t_0);
   (*Py_TYPE(o)->tp_free)(o);
 }
 
-static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr(PyObject *o, visitproc v, void *a) {
+static int __pyx_tp_traverse_3_sa___pyx_scope_struct_29_genexpr(PyObject *o, visitproc v, void *a) {
   int e;
-  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)o;
   if (p->__pyx_outer_scope) {
     e = (*v)(((PyObject*)p->__pyx_outer_scope), a); if (e) return e;
   }
@@ -76241,11 +78941,11 @@ static int __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr(PyObject *o, vis
   return 0;
 }
 
-static int __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
-  struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr *)o;
+static int __pyx_tp_clear_3_sa___pyx_scope_struct_29_genexpr(PyObject *o) {
+  struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *p = (struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr *)o;
   PyObject* tmp;
   tmp = ((PyObject*)p->__pyx_outer_scope);
-  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_26___str__ *)Py_None); Py_INCREF(Py_None);
+  p->__pyx_outer_scope = ((struct __pyx_obj_3_sa___pyx_scope_struct_28___str__ *)Py_None); Py_INCREF(Py_None);
   Py_XDECREF(tmp);
   tmp = ((PyObject*)p->__pyx_v_feat);
   p->__pyx_v_feat = Py_None; Py_INCREF(Py_None);
@@ -76256,11 +78956,11 @@ static int __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr(PyObject *o) {
   return 0;
 }
 
-static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_27_genexpr[] = {
+static PyMethodDef __pyx_methods_3_sa___pyx_scope_struct_29_genexpr[] = {
   {0, 0, 0, 0}
 };
 
-static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27_genexpr = {
+static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_29_genexpr = {
   0, /*nb_add*/
   0, /*nb_subtract*/
   0, /*nb_multiply*/
@@ -76318,7 +79018,7 @@ static PyNumberMethods __pyx_tp_as_number___pyx_scope_struct_27_genexpr = {
   #endif
 };
 
-static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27_genexpr = {
+static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_29_genexpr = {
   0, /*sq_length*/
   0, /*sq_concat*/
   0, /*sq_repeat*/
@@ -76331,13 +79031,13 @@ static PySequenceMethods __pyx_tp_as_sequence___pyx_scope_struct_27_genexpr = {
   0, /*sq_inplace_repeat*/
 };
 
-static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_27_genexpr = {
+static PyMappingMethods __pyx_tp_as_mapping___pyx_scope_struct_29_genexpr = {
   0, /*mp_length*/
   0, /*mp_subscript*/
   0, /*mp_ass_subscript*/
 };
 
-static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27_genexpr = {
+static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_29_genexpr = {
   #if PY_MAJOR_VERSION < 3
   0, /*bf_getreadbuffer*/
   #endif
@@ -76358,12 +79058,12 @@ static PyBufferProcs __pyx_tp_as_buffer___pyx_scope_struct_27_genexpr = {
   #endif
 };
 
-static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
+static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_29_genexpr = {
   PyVarObject_HEAD_INIT(0, 0)
-  __Pyx_NAMESTR("_sa.__pyx_scope_struct_27_genexpr"), /*tp_name*/
-  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_27_genexpr), /*tp_basicsize*/
+  __Pyx_NAMESTR("_sa.__pyx_scope_struct_29_genexpr"), /*tp_name*/
+  sizeof(struct __pyx_obj_3_sa___pyx_scope_struct_29_genexpr), /*tp_basicsize*/
   0, /*tp_itemsize*/
-  __pyx_tp_dealloc_3_sa___pyx_scope_struct_27_genexpr, /*tp_dealloc*/
+  __pyx_tp_dealloc_3_sa___pyx_scope_struct_29_genexpr, /*tp_dealloc*/
   0, /*tp_print*/
   0, /*tp_getattr*/
   0, /*tp_setattr*/
@@ -76373,24 +79073,24 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
   0, /*reserved*/
   #endif
   0, /*tp_repr*/
-  &__pyx_tp_as_number___pyx_scope_struct_27_genexpr, /*tp_as_number*/
-  &__pyx_tp_as_sequence___pyx_scope_struct_27_genexpr, /*tp_as_sequence*/
-  &__pyx_tp_as_mapping___pyx_scope_struct_27_genexpr, /*tp_as_mapping*/
+  &__pyx_tp_as_number___pyx_scope_struct_29_genexpr, /*tp_as_number*/
+  &__pyx_tp_as_sequence___pyx_scope_struct_29_genexpr, /*tp_as_sequence*/
+  &__pyx_tp_as_mapping___pyx_scope_struct_29_genexpr, /*tp_as_mapping*/
   0, /*tp_hash*/
   0, /*tp_call*/
   0, /*tp_str*/
   0, /*tp_getattro*/
   0, /*tp_setattro*/
-  &__pyx_tp_as_buffer___pyx_scope_struct_27_genexpr, /*tp_as_buffer*/
+  &__pyx_tp_as_buffer___pyx_scope_struct_29_genexpr, /*tp_as_buffer*/
   Py_TPFLAGS_DEFAULT|Py_TPFLAGS_CHECKTYPES|Py_TPFLAGS_HAVE_NEWBUFFER|Py_TPFLAGS_HAVE_GC, /*tp_flags*/
   0, /*tp_doc*/
-  __pyx_tp_traverse_3_sa___pyx_scope_struct_27_genexpr, /*tp_traverse*/
-  __pyx_tp_clear_3_sa___pyx_scope_struct_27_genexpr, /*tp_clear*/
+  __pyx_tp_traverse_3_sa___pyx_scope_struct_29_genexpr, /*tp_traverse*/
+  __pyx_tp_clear_3_sa___pyx_scope_struct_29_genexpr, /*tp_clear*/
   0, /*tp_richcompare*/
   0, /*tp_weaklistoffset*/
   0, /*tp_iter*/
   0, /*tp_iternext*/
-  __pyx_methods_3_sa___pyx_scope_struct_27_genexpr, /*tp_methods*/
+  __pyx_methods_3_sa___pyx_scope_struct_29_genexpr, /*tp_methods*/
   0, /*tp_members*/
   0, /*tp_getset*/
   0, /*tp_base*/
@@ -76400,7 +79100,7 @@ static PyTypeObject __pyx_type_3_sa___pyx_scope_struct_27_genexpr = {
   0, /*tp_dictoffset*/
   0, /*tp_init*/
   0, /*tp_alloc*/
-  __pyx_tp_new_3_sa___pyx_scope_struct_27_genexpr, /*tp_new*/
+  __pyx_tp_new_3_sa___pyx_scope_struct_29_genexpr, /*tp_new*/
   0, /*tp_free*/
   0, /*tp_is_gc*/
   0, /*tp_bases*/
@@ -76472,10 +79172,11 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
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   {&__pyx_kp_s_141, __pyx_k_141, sizeof(__pyx_k_141), 0, 0, 1, 0},
   {&__pyx_kp_s_145, __pyx_k_145, sizeof(__pyx_k_145), 0, 0, 1, 0},
-  {&__pyx_kp_s_151, __pyx_k_151, sizeof(__pyx_k_151), 0, 0, 1, 0},
+  {&__pyx_n_s_151, __pyx_k_151, sizeof(__pyx_k_151), 0, 0, 1, 1},
   {&__pyx_kp_s_154, __pyx_k_154, sizeof(__pyx_k_154), 0, 0, 1, 0},
-  {&__pyx_kp_s_155, __pyx_k_155, sizeof(__pyx_k_155), 0, 0, 1, 0},
-  {&__pyx_kp_s_159, __pyx_k_159, sizeof(__pyx_k_159), 0, 0, 1, 0},
+  {&__pyx_kp_s_157, __pyx_k_157, sizeof(__pyx_k_157), 0, 0, 1, 0},
+  {&__pyx_kp_s_158, __pyx_k_158, sizeof(__pyx_k_158), 0, 0, 1, 0},
+  {&__pyx_kp_s_162, __pyx_k_162, sizeof(__pyx_k_162), 0, 0, 1, 0},
   {&__pyx_kp_s_18, __pyx_k_18, sizeof(__pyx_k_18), 0, 0, 1, 0},
   {&__pyx_kp_s_2, __pyx_k_2, sizeof(__pyx_k_2), 0, 0, 1, 0},
   {&__pyx_kp_s_21, __pyx_k_21, sizeof(__pyx_k_21), 0, 0, 1, 0},
@@ -76562,6 +79263,9 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
   {&__pyx_n_s__arr, __pyx_k__arr, sizeof(__pyx_k__arr), 0, 0, 1, 1},
   {&__pyx_n_s__arr_high, __pyx_k__arr_high, sizeof(__pyx_k__arr_high), 0, 0, 1, 1},
   {&__pyx_n_s__arr_low, __pyx_k__arr_low, sizeof(__pyx_k__arr_low), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_e, __pyx_k__bilex_e, sizeof(__pyx_k__bilex_e), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_f, __pyx_k__bilex_f, sizeof(__pyx_k__bilex_f), 0, 0, 1, 1},
+  {&__pyx_n_s__bilex_fe, __pyx_k__bilex_fe, sizeof(__pyx_k__bilex_fe), 0, 0, 1, 1},
   {&__pyx_n_s__by_slack_factor, __pyx_k__by_slack_factor, sizeof(__pyx_k__by_slack_factor), 0, 0, 1, 1},
   {&__pyx_n_s__category, __pyx_k__category, sizeof(__pyx_k__category), 0, 0, 1, 1},
   {&__pyx_n_s__chain, __pyx_k__chain, sizeof(__pyx_k__chain), 0, 0, 1, 1},
@@ -76577,6 +79281,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
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   {&__pyx_n_s__dist, __pyx_k__dist, sizeof(__pyx_k__dist), 0, 0, 1, 1},
+  {&__pyx_n_s__dump_online_rules, __pyx_k__dump_online_rules, sizeof(__pyx_k__dump_online_rules), 0, 0, 1, 1},
   {&__pyx_n_s__e, __pyx_k__e, sizeof(__pyx_k__e), 0, 0, 1, 1},
   {&__pyx_n_s__e_i, __pyx_k__e_i, sizeof(__pyx_k__e_i), 0, 0, 1, 1},
   {&__pyx_n_s__e_j, __pyx_k__e_j, sizeof(__pyx_k__e_j), 0, 0, 1, 1},
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   {&__pyx_n_s__gc, __pyx_k__gc, sizeof(__pyx_k__gc), 0, 0, 1, 1},
   {&__pyx_n_s__genexpr, __pyx_k__genexpr, sizeof(__pyx_k__genexpr), 0, 0, 1, 1},
+  {&__pyx_n_s__get, __pyx_k__get, sizeof(__pyx_k__get), 0, 0, 1, 1},
   {&__pyx_n_s__getLogger, __pyx_k__getLogger, sizeof(__pyx_k__getLogger), 0, 0, 1, 1},
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   {&__pyx_n_s__get_f_id, __pyx_k__get_f_id, sizeof(__pyx_k__get_f_id), 0, 0, 1, 1},
+  {&__pyx_n_s__get_f_phrases, __pyx_k__get_f_phrases, sizeof(__pyx_k__get_f_phrases), 0, 0, 1, 1},
   {&__pyx_n_s__get_id, __pyx_k__get_id, sizeof(__pyx_k__get_id), 0, 0, 1, 1},
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   {&__pyx_n_s__get_word, __pyx_k__get_word, sizeof(__pyx_k__get_word), 0, 0, 1, 1},
@@ -76640,6 +79347,7 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
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   {&__pyx_n_s__isa, __pyx_k__isa, sizeof(__pyx_k__isa), 0, 0, 1, 1},
+  {&__pyx_n_s__isvar, __pyx_k__isvar, sizeof(__pyx_k__isvar), 0, 0, 1, 1},
   {&__pyx_n_s__iteritems, __pyx_k__iteritems, sizeof(__pyx_k__iteritems), 0, 0, 1, 1},
   {&__pyx_n_s__itertools, __pyx_k__itertools, sizeof(__pyx_k__itertools), 0, 0, 1, 1},
   {&__pyx_n_s__itervalues, __pyx_k__itervalues, sizeof(__pyx_k__itervalues), 0, 0, 1, 1},
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   {&__pyx_n_s__lattice, __pyx_k__lattice, sizeof(__pyx_k__lattice), 0, 0, 1, 1},
+  {&__pyx_n_s__lex_i, __pyx_k__lex_i, sizeof(__pyx_k__lex_i), 0, 0, 1, 1},
+  {&__pyx_n_s__lex_j, __pyx_k__lex_j, sizeof(__pyx_k__lex_j), 0, 0, 1, 1},
   {&__pyx_n_s__lhs, __pyx_k__lhs, sizeof(__pyx_k__lhs), 0, 0, 1, 1},
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   {&__pyx_n_s__link_i, __pyx_k__link_i, sizeof(__pyx_k__link_i), 0, 0, 1, 1},
@@ -76677,14 +79387,19 @@ static __Pyx_StringTabEntry __pyx_string_tab[] = {
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   {&__pyx_n_s__new_e_j, __pyx_k__new_e_j, sizeof(__pyx_k__new_e_j), 0, 0, 1, 1},
+  {&__pyx_n_s__new_lex_i, __pyx_k__new_lex_i, sizeof(__pyx_k__new_lex_i), 0, 0, 1, 1},
+  {&__pyx_n_s__new_lex_j, __pyx_k__new_lex_j, sizeof(__pyx_k__new_lex_j), 0, 0, 1, 1},
   {&__pyx_n_s__new_min_bound, __pyx_k__new_min_bound, sizeof(__pyx_k__new_min_bound), 0, 0, 1, 1},
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   {&__pyx_n_s__nt_open, __pyx_k__nt_open, sizeof(__pyx_k__nt_open), 0, 0, 1, 1},
+  {&__pyx_n_s__ntc, __pyx_k__ntc, sizeof(__pyx_k__ntc), 0, 0, 1, 1},
   {&__pyx_n_s__num_subpatterns, __pyx_k__num_subpatterns, sizeof(__pyx_k__num_subpatterns), 0, 0, 1, 1},
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   {&__pyx_n_s__old_last_nt, __pyx_k__old_last_nt, sizeof(__pyx_k__old_last_nt), 0, 0, 1, 1},
+  {&__pyx_n_s__online, __pyx_k__online, sizeof(__pyx_k__online), 0, 0, 1, 1},
+  {&__pyx_n_s__online_ctx_lookup, __pyx_k__online_ctx_lookup, sizeof(__pyx_k__online_ctx_lookup), 0, 0, 1, 1},
   {&__pyx_n_s__open, __pyx_k__open, sizeof(__pyx_k__open), 0, 0, 1, 1},
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   {&__pyx_n_s__suffix_link, __pyx_k__suffix_link, sizeof(__pyx_k__suffix_link), 0, 0, 1, 1},
+  {&__pyx_n_s__sym, __pyx_k__sym, sizeof(__pyx_k__sym), 0, 0, 1, 1},
   {&__pyx_n_s__syms, __pyx_k__syms, sizeof(__pyx_k__syms), 0, 0, 1, 1},
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   {&__pyx_n_s__tight_phrases, __pyx_k__tight_phrases, sizeof(__pyx_k__tight_phrases), 0, 0, 1, 1},
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-  __pyx_builtin_sorted = __Pyx_GetName(__pyx_b, __pyx_n_s__sorted); if (!__pyx_builtin_sorted) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 952; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_builtin_max = __Pyx_GetName(__pyx_b, __pyx_n_s__max); if (!__pyx_builtin_max) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_sorted = __Pyx_GetName(__pyx_b, __pyx_n_s__sorted); if (!__pyx_builtin_sorted) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 970; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_builtin_max = __Pyx_GetName(__pyx_b, __pyx_n_s__max); if (!__pyx_builtin_max) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1143; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_98));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":109
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":119
  *             logger.info("Sampling strategy: uniform, max sample size = %d", sample_size)
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-  __pyx_k_tuple_102 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_102)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_102 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_102)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_101));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_102));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":326
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":338
  *         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
  *         if alignment is None:
  *             raise Exception("Must specify an alignment object")             # <<<<<<<<<<<<<<
  *         self.alignment = alignment
  * 
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-  __pyx_k_tuple_107 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_107)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 326; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_107 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_107)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 338; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_107));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1039
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1062
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  *                             #ERROR: We never get here
  *                             raise Exception("Keyword trie error")             # <<<<<<<<<<<<<<
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-  __pyx_k_tuple_122 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_122)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1039; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_k_tuple_122 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_122)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1062; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_122));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1861
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":1913
  *         # f_ i and j are current, e_ i and j are previous
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+  __pyx_k_tuple_134 = PyTuple_New(19); if (unlikely(!__pyx_k_tuple_134)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__old_last_nt));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_134));
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+  __pyx_k_codeobj_135 = (PyObject*)__Pyx_PyCode_New(9, 0, 19, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_k_tuple_134, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_136, __pyx_n_s__extract, 1913, __pyx_empty_bytes); if (unlikely(!__pyx_k_codeobj_135)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1913; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2063
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2120
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+  __pyx_k_tuple_140 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_140)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2120; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_140));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2064
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2121
  *     def dump_online_stats(self):
  *         logger.info('------------------------------')
  *         logger.info('         Online Stats         ')             # <<<<<<<<<<<<<<
  *         logger.info('------------------------------')
  *         logger.info('f')
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+  __pyx_k_tuple_142 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_142)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_kp_s_141));
   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_142));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2065
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2122
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  *         logger.info('         Online Stats         ')
  *         logger.info('------------------------------')             # <<<<<<<<<<<<<<
  *         logger.info('f')
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+  __pyx_k_tuple_143 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_143)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_143));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2066
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2123
  *         logger.info('         Online Stats         ')
  *         logger.info('------------------------------')
  *         logger.info('f')             # <<<<<<<<<<<<<<
  *         for w in self.bilex_f:
  *             logger.info(sym_tostring(w) + ' : ' + str(self.bilex_f[w]))
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+  __pyx_k_tuple_144 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_144)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2123; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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   __Pyx_GIVEREF(((PyObject *)__pyx_k_tuple_144));
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2069
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2126
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  *             logger.info(sym_tostring(w) + ' : ' + str(self.bilex_f[w]))
  *         logger.info('e')             # <<<<<<<<<<<<<<
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+  __pyx_k_tuple_146 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_146)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2126; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2072
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2129
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  *             logger.info(sym_tostring(w) + ' : ' + str(self.bilex_e[w]))
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+  __pyx_k_tuple_147 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_147)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2129; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2076
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2133
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  *                 logger.info(sym_tostring(w) + ' : ' + sym_tostring(w2) + ' : ' + str(self.bilex_fe[w][w2]))
  *         logger.info('F')             # <<<<<<<<<<<<<<
  *         for ph in self.phrases_f:
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2079
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2136
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  *             logger.info(str(ph) + ' ||| ' + str(self.phrases_f[ph]))
  *         logger.info('E')             # <<<<<<<<<<<<<<
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+  __pyx_k_tuple_149 = PyTuple_New(1); if (unlikely(!__pyx_k_tuple_149)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2136; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2082
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2139
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  *             logger.info(str(ph) + ' ||| ' + str(self.phrases_e[ph]))
  *         logger.info('FE')             # <<<<<<<<<<<<<<
- *         for ph in self.phrases_fe:
- *             for ph2 in self.phrases_fe[ph]:
+ *         self.dump_online_rules()
+ * 
  */
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+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2166
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+ * 
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+ *             if f_j > (f_len - 1) or (f_j - f_i) + 1 > self.max_initial_size:
+ */
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__f_i));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__lex_i));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__lex_j));
+  PyTuple_SET_ITEM(__pyx_k_tuple_152, 3, ((PyObject *)__pyx_n_s__lex_j));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__lex_j));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__syms));
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  *     return ALPHABET.fromstring(string, terminal)
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+ */
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__sym));
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+
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
+ *     return sym_isvar(sym)
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
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@@ -78167,24 +80940,24 @@ PyMODINIT_FUNC PyInit__sa(void)
   if (__Pyx_SetVtable(__pyx_type_3_sa_SuffixArray.tp_dict, __pyx_vtabptr_3_sa_SuffixArray) < 0) {__pyx_filename = __pyx_f[12]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   if (__Pyx_SetAttrString(__pyx_m, "SuffixArray", (PyObject *)&__pyx_type_3_sa_SuffixArray) < 0) {__pyx_filename = __pyx_f[12]; __pyx_lineno = 6; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_SuffixArray = &__pyx_type_3_sa_SuffixArray;
-  if (PyType_Ready(&__pyx_type_3_sa_TrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "TrieNode", (PyObject *)&__pyx_type_3_sa_TrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_TrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 46; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "TrieNode", (PyObject *)&__pyx_type_3_sa_TrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 46; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_TrieNode = &__pyx_type_3_sa_TrieNode;
   __pyx_type_3_sa_ExtendedTrieNode.tp_base = __pyx_ptype_3_sa_TrieNode;
-  if (PyType_Ready(&__pyx_type_3_sa_ExtendedTrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "ExtendedTrieNode", (PyObject *)&__pyx_type_3_sa_ExtendedTrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_ExtendedTrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "ExtendedTrieNode", (PyObject *)&__pyx_type_3_sa_ExtendedTrieNode) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 52; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_ExtendedTrieNode = &__pyx_type_3_sa_ExtendedTrieNode;
-  if (PyType_Ready(&__pyx_type_3_sa_TrieTable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "TrieTable", (PyObject *)&__pyx_type_3_sa_TrieTable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 53; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_TrieTable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "TrieTable", (PyObject *)&__pyx_type_3_sa_TrieTable) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 63; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_TrieTable = &__pyx_type_3_sa_TrieTable;
   __pyx_vtabptr_3_sa_PhraseLocation = &__pyx_vtable_3_sa_PhraseLocation;
   __pyx_vtable_3_sa_PhraseLocation.contains = (int (*)(struct __pyx_obj_3_sa_PhraseLocation *, int))__pyx_f_3_sa_14PhraseLocation_contains;
-  if (PyType_Ready(&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 74; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_3_sa_PhraseLocation.tp_dict, __pyx_vtabptr_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 74; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "PhraseLocation", (PyObject *)&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 74; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_3_sa_PhraseLocation.tp_dict, __pyx_vtabptr_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "PhraseLocation", (PyObject *)&__pyx_type_3_sa_PhraseLocation) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 84; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_PhraseLocation = &__pyx_type_3_sa_PhraseLocation;
-  if (PyType_Ready(&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "Sampler", (PyObject *)&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 96; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "Sampler", (PyObject *)&__pyx_type_3_sa_Sampler) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 106; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_Sampler = &__pyx_type_3_sa_Sampler;
   __pyx_vtabptr_3_sa_HieroCachingRuleFactory = &__pyx_vtable_3_sa_HieroCachingRuleFactory;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.set_idmap = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, struct __pyx_obj_3_sa_DataArray *))__pyx_f_3_sa_23HieroCachingRuleFactory_set_idmap;
@@ -78202,9 +80975,9 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_vtable_3_sa_HieroCachingRuleFactory.extract_phrases = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, int, int, int *, int *, int *, int, int, int, int *, int *, int *, int, int, int))__pyx_f_3_sa_23HieroCachingRuleFactory_extract_phrases;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.create_alignments = (struct __pyx_obj_3_sa_IntList *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, int *, int, PyObject *, PyObject *))__pyx_f_3_sa_23HieroCachingRuleFactory_create_alignments;
   __pyx_vtable_3_sa_HieroCachingRuleFactory.extract = (PyObject *(*)(struct __pyx_obj_3_sa_HieroCachingRuleFactory *, struct __pyx_obj_3_sa_Phrase *, struct __pyx_t_3_sa_Matching *, int *, int))__pyx_f_3_sa_23HieroCachingRuleFactory_extract;
-  if (PyType_Ready(&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetVtable(__pyx_type_3_sa_HieroCachingRuleFactory.tp_dict, __pyx_vtabptr_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  if (__Pyx_SetAttrString(__pyx_m, "HieroCachingRuleFactory", (PyObject *)&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 218; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetVtable(__pyx_type_3_sa_HieroCachingRuleFactory.tp_dict, __pyx_vtabptr_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (__Pyx_SetAttrString(__pyx_m, "HieroCachingRuleFactory", (PyObject *)&__pyx_type_3_sa_HieroCachingRuleFactory) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 228; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa_HieroCachingRuleFactory = &__pyx_type_3_sa_HieroCachingRuleFactory;
   __pyx_vtabptr_3_sa_Scorer = &__pyx_vtable_3_sa_Scorer;
   __pyx_vtable_3_sa_Scorer.score = (struct __pyx_obj_3_sa_FeatureVector *(*)(struct __pyx_obj_3_sa_Scorer *, PyObject *))__pyx_f_3_sa_6Scorer_score;
@@ -78220,27 +80993,27 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_ptype_3_sa___pyx_scope_struct_2_genexpr = &__pyx_type_3_sa___pyx_scope_struct_2_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_3_compute_stats) < 0) {__pyx_filename = __pyx_f[9]; __pyx_lineno = 36; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_3_compute_stats = &__pyx_type_3_sa___pyx_scope_struct_3_compute_stats;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_4_make_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_4_make_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_4_make_lattice = &__pyx_type_3_sa___pyx_scope_struct_4_make_lattice;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_5_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 108; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_5_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_5_genexpr = &__pyx_type_3_sa___pyx_scope_struct_5_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_6_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 109; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_6_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_6_genexpr = &__pyx_type_3_sa___pyx_scope_struct_6_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_7_decode_lattice = &__pyx_type_3_sa___pyx_scope_struct_7_decode_lattice;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_8_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 112; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_8_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_8_genexpr = &__pyx_type_3_sa___pyx_scope_struct_8_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 115; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_9_decode_sentence = &__pyx_type_3_sa___pyx_scope_struct_9_decode_sentence;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_10_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 116; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_10_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_10_genexpr = &__pyx_type_3_sa___pyx_scope_struct_10_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_11_encode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_11_encode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_11_encode_words = &__pyx_type_3_sa___pyx_scope_struct_11_encode_words;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_12_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 119; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_12_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_12_genexpr = &__pyx_type_3_sa___pyx_scope_struct_12_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_13_decode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_13_decode_words) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_13_decode_words = &__pyx_type_3_sa___pyx_scope_struct_13_decode_words;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_14_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 122; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_14_genexpr) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 125; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_14_genexpr = &__pyx_type_3_sa___pyx_scope_struct_14_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_15___iter__) < 0) {__pyx_filename = __pyx_f[7]; __pyx_lineno = 141; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_15___iter__ = &__pyx_type_3_sa___pyx_scope_struct_15___iter__;
@@ -78250,24 +81023,28 @@ PyMODINIT_FUNC PyInit__sa(void)
   __pyx_ptype_3_sa___pyx_scope_struct_17_genexpr = &__pyx_type_3_sa___pyx_scope_struct_17_genexpr;
   if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_18_alignments) < 0) {__pyx_filename = __pyx_f[7]; __pyx_lineno = 190; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_18_alignments = &__pyx_type_3_sa___pyx_scope_struct_18_alignments;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_19_input) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 954; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_19_input) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 972; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
   __pyx_ptype_3_sa___pyx_scope_struct_19_input = &__pyx_type_3_sa___pyx_scope_struct_19_input;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_20_add_instance) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1829; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_20_add_instance = &__pyx_type_3_sa___pyx_scope_struct_20_add_instance;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_21_form_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1992; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_21_form_rule = &__pyx_type_3_sa___pyx_scope_struct_21_form_rule;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2053; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_22_genexpr = &__pyx_type_3_sa___pyx_scope_struct_22_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_23_fmt_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2057; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_23_fmt_rule = &__pyx_type_3_sa___pyx_scope_struct_23_fmt_rule;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_24_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2058; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_24_genexpr = &__pyx_type_3_sa___pyx_scope_struct_24_genexpr;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_25___iter__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_25___iter__ = &__pyx_type_3_sa___pyx_scope_struct_25___iter__;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_26___str__) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 20; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_26___str__ = &__pyx_type_3_sa___pyx_scope_struct_26___str__;
-  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_27_genexpr) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 21; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __pyx_ptype_3_sa___pyx_scope_struct_27_genexpr = &__pyx_type_3_sa___pyx_scope_struct_27_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_20_genexpr) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1182; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_20_genexpr = &__pyx_type_3_sa___pyx_scope_struct_20_genexpr;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_21_add_instance) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 1879; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_21_add_instance = &__pyx_type_3_sa___pyx_scope_struct_21_add_instance;
+  if (PyType_Ready(&__pyx_type_3_sa___pyx_scope_struct_22_form_rule) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2049; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_ptype_3_sa___pyx_scope_struct_22_form_rule = &__pyx_type_3_sa___pyx_scope_struct_22_form_rule;
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   /*--- Variable import code ---*/
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@@ -78412,60 +81189,72 @@ PyMODINIT_FUNC PyInit__sa(void)
   /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":107
  *     return ALPHABET.fromstring(string, terminal)
  * 
+ * def isvar(sym):             # <<<<<<<<<<<<<<
+ *     return sym_isvar(sym)
+ * 
+ */
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_3isvar, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_1);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__isvar, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 107; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
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+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":110
+ *     return sym_isvar(sym)
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+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_5make_lattice, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__make_lattice, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 110; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":111
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":114
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  * def decode_lattice(lattice):             # <<<<<<<<<<<<<<
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-  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_5decode_lattice, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 111; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_7decode_lattice, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__decode_lattice, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 114; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":115
+  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
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  * def decode_sentence(lattice):             # <<<<<<<<<<<<<<
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+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_9decode_sentence, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__decode_sentence, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":118
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-  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_9encode_words, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 118; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_11encode_words, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__encode_words, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 121; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  /* "/home/m/workspace/cdec/python/src/sa/sym.pxi":121
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+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__decode_words, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[10]; __pyx_lineno = 124; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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-  __pyx_t_1 = PyList_New(12); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __pyx_t_1 = PyList_New(13); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 15; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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@@ -78594,6 +81383,9 @@ PyMODINIT_FUNC PyInit__sa(void)
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   __Pyx_GIVEREF(((PyObject *)__pyx_n_s__meta));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__online));
+  PyList_SET_ITEM(__pyx_t_1, 12, ((PyObject *)__pyx_n_s__online));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__online));
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":29
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":30
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+  __Pyx_GOTREF(__pyx_t_1);
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+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":31
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+  __Pyx_GOTREF(__pyx_t_3);
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__fcount));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__fcount));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__fsample_count));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__fsample_count));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__paircount));
+  PyList_SET_ITEM(__pyx_t_3, 2, ((PyObject *)__pyx_n_s__paircount));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__paircount));
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+  PyList_SET_ITEM(__pyx_t_3, 3, ((PyObject *)__pyx_n_s__bilex_f));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__bilex_f));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__bilex_e));
+  PyList_SET_ITEM(__pyx_t_3, 4, ((PyObject *)__pyx_n_s__bilex_e));
+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__bilex_e));
+  __Pyx_INCREF(((PyObject *)__pyx_n_s__bilex_fe));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s__bilex_fe));
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+  __Pyx_GIVEREF(((PyObject *)__pyx_n_s_151));
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+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":39
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":30
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":40
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":31
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":34
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-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":57
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-  __pyx_k_99 = __pyx_t_1;
-  __Pyx_GIVEREF(__pyx_t_1);
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+  __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2088
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2200
  * 
  * # Spans are _inclusive_ on both ends [i, j]
  * def span_check(vec, i, j):             # <<<<<<<<<<<<<<
  *     k = i
  *     while k <= j:
  */
-  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_13span_check, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_check, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2088; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_3_sa_15span_check, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2200; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_check, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2200; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2096
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2208
  *     return True
  * 
  * def span_inc(vec, i, j):             # <<<<<<<<<<<<<<
  *     k = i
  *     while k <= j:
  */
-  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_15span_inc, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_inc, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2096; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_3_sa_17span_inc, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2208; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_inc, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2208; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
-  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2102
+  /* "/home/m/workspace/cdec/python/src/sa/rulefactory.pxi":2214
  *         k += 1
  * 
  * def span_dec(vec, i, j):             # <<<<<<<<<<<<<<
  *     k = i
  *     while k <= j:
  */
-  __pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_3_sa_17span_dec, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_dec, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2102; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = PyCFunction_NewEx(&__pyx_mdef_3_sa_19span_dec, NULL, __pyx_n_s___sa); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2214; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__span_dec, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[8]; __pyx_lineno = 2214; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "/home/m/workspace/cdec/python/src/sa/features.pxi":1
  * cdef StringMap FD = StringMap() # Feature name dictionary             # <<<<<<<<<<<<<<
  * 
  * INITIAL_CAPACITY = 7 # default number of features
  */
-  __pyx_t_1 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_StringMap)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_t_3 = PyObject_Call(((PyObject *)((PyObject*)__pyx_ptype_3_sa_StringMap)), ((PyObject *)__pyx_empty_tuple), NULL); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
   __Pyx_XGOTREF(((PyObject *)__pyx_v_3_sa_FD));
   __Pyx_DECREF(((PyObject *)__pyx_v_3_sa_FD));
-  __Pyx_GIVEREF(__pyx_t_1);
-  __pyx_v_3_sa_FD = ((struct __pyx_obj_3_sa_StringMap *)__pyx_t_1);
-  __pyx_t_1 = 0;
+  __Pyx_GIVEREF(__pyx_t_3);
+  __pyx_v_3_sa_FD = ((struct __pyx_obj_3_sa_StringMap *)__pyx_t_3);
+  __pyx_t_3 = 0;
 
   /* "/home/m/workspace/cdec/python/src/sa/features.pxi":3
  * cdef StringMap FD = StringMap() # Feature name dictionary
@@ -78723,20 +81567,20 @@ PyMODINIT_FUNC PyInit__sa(void)
  * 
  * cdef class FeatureVector:
  */
-  __pyx_t_1 = __Pyx_GetName(__pyx_m, __pyx_n_s__INITIAL_CAPACITY); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(__pyx_t_1);
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__INCREMENT, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
+  __pyx_t_3 = __Pyx_GetName(__pyx_m, __pyx_n_s__INITIAL_CAPACITY); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(__pyx_t_3);
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s__INCREMENT, __pyx_t_3) < 0) {__pyx_filename = __pyx_f[13]; __pyx_lineno = 4; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
 
   /* "_sa.pyx":1
  * import logging             # <<<<<<<<<<<<<<
  * import resource
  * import gzip
  */
-  __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_GOTREF(((PyObject *)__pyx_t_1));
-  if (PyObject_SetAttr(__pyx_m, __pyx_n_s____test__, ((PyObject *)__pyx_t_1)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
-  __Pyx_DECREF(((PyObject *)__pyx_t_1)); __pyx_t_1 = 0;
+  __pyx_t_3 = PyDict_New(); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_GOTREF(((PyObject *)__pyx_t_3));
+  if (PyObject_SetAttr(__pyx_m, __pyx_n_s____test__, ((PyObject *)__pyx_t_3)) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+  __Pyx_DECREF(((PyObject *)__pyx_t_3)); __pyx_t_3 = 0;
   goto __pyx_L0;
   __pyx_L1_error:;
   __Pyx_XDECREF(__pyx_t_1);
diff --git a/python/src/sa/default_scorer.pxi b/python/src/sa/default_scorer.pxi
deleted file mode 100644
index 483f4743..00000000
--- a/python/src/sa/default_scorer.pxi
+++ /dev/null
@@ -1,74 +0,0 @@
-from libc.stdlib cimport malloc, realloc, free
-from libc.math cimport log10
-
-MAXSCORE = -99
-EgivenFCoherent = 0
-SampleCountF = 1
-CountEF = 2
-MaxLexFgivenE = 3
-MaxLexEgivenF = 4
-IsSingletonF = 5
-IsSingletonFE = 6
-NFEATURES = 7
-
-cdef class DefaultScorer(Scorer):
-    cdef BiLex ttable
-    cdef int* fid
-
-    def __dealloc__(self):
-        free(self.fid)
-
-    def __init__(self, BiLex ttable):
-        self.ttable = ttable
-        self.fid = <int*> malloc(NFEATURES*sizeof(int))
-        cdef unsigned i
-        for i, fnames in enumerate(('EgivenFCoherent', 'SampleCountF', 'CountEF',
-                'MaxLexFgivenE', 'MaxLexEgivenF', 'IsSingletonF', 'IsSingletonFE')):
-            self.fid[i] = FD.index(fnames)
-
-    cdef FeatureVector score(self, Phrase fphrase, Phrase ephrase,
-            unsigned paircount, unsigned fcount, unsigned fsample_count):
-        cdef FeatureVector scores = FeatureVector()
-
-        #  EgivenFCoherent
-        cdef float efc = <float>paircount/fsample_count
-        scores.set(self.fid[EgivenFCoherent], -log10(efc) if efc > 0 else MAXSCORE)
-
-        # SampleCountF
-        scores.set(self.fid[SampleCountF], log10(1 + fsample_count))
-
-        # CountEF
-        scores.set(self.fid[CountEF], log10(1 + paircount))
-
-        # MaxLexFgivenE TODO typify
-        ewords = ephrase.words
-        ewords.append('NULL')
-        cdef float mlfe = 0, max_score = -1
-        for f in fphrase.words:
-            for e in ewords:
-                score = self.ttable.get_score(f, e, 1)
-                if score > max_score:
-                    max_score = score
-            mlfe += -log10(max_score) if max_score > 0 else MAXSCORE
-        scores.set(self.fid[MaxLexFgivenE], mlfe)
-
-        # MaxLexEgivenF TODO same
-        fwords = fphrase.words
-        fwords.append('NULL')
-        cdef float mlef = 0
-        max_score = -1
-        for e in ephrase.words:
-            for f in fwords:
-                score = self.ttable.get_score(f, e, 0)
-                if score > max_score:
-                    max_score = score
-            mlef += -log10(max_score) if max_score > 0 else MAXSCORE
-        scores.set(self.fid[MaxLexEgivenF], mlef)
-
-        # IsSingletonF
-        scores.set(self.fid[IsSingletonF], (fcount == 1))
-
-        # IsSingletonFE
-        scores.set(self.fid[IsSingletonFE], (paircount == 1))
-
-        return scores
diff --git a/python/src/sa/rulefactory.pxi b/python/src/sa/rulefactory.pxi
index b10d25dd..7063c2da 100644
--- a/python/src/sa/rulefactory.pxi
+++ b/python/src/sa/rulefactory.pxi
@@ -23,7 +23,17 @@ FeatureContext = namedtuple('FeatureContext',
      'test_sentence',
      'f_text',
      'e_text',
-     'meta'
+     'meta',
+     'online'
+    ])
+
+OnlineFeatureContext = namedtuple('OnlineFeatureContext',
+    ['fcount',
+     'fsample_count',
+     'paircount',
+     'bilex_f',
+     'bilex_e',
+     'bilex_fe'
     ])
 
 cdef int PRECOMPUTE = 0
@@ -264,6 +274,8 @@ cdef class HieroCachingRuleFactory:
     cdef IntList findexes
     cdef IntList findexes1
 
+    cdef bint online
+    cdef samples_f
     cdef phrases_f
     cdef phrases_e
     cdef phrases_fe
@@ -381,6 +393,12 @@ cdef class HieroCachingRuleFactory:
         
         # Online stats 
         
+        # True after data is added
+        self.online = False
+        
+        # Keep track of everything that can be sampled:
+        self.samples_f = defaultdict(int)
+        
         # Phrase counts
         self.phrases_f = defaultdict(int)
         self.phrases_e = defaultdict(int)
@@ -969,6 +987,11 @@ cdef class HieroCachingRuleFactory:
         hit = 0
         reachable_buffer = {}
 
+        # Phrase pairs processed by suffix array extractor.  Do not re-extract
+        # during online extraction.  This is probably the hackiest part of
+        # online grammar extraction.
+        seen_phrases = set()
+        
         # Do not cache between sentences
         self.rules.root = ExtendedTrieNode(phrase_location=PhraseLocation())
 
@@ -1124,7 +1147,12 @@ cdef class HieroCachingRuleFactory:
                                                f, e, count, fcount[f], num_samples,
                                                (k,i+spanlen), locs, input_match, 
                                                fwords, self.fda, self.eda,
-                                               meta))
+                                               meta,
+                                               # Include online stats.  None if none.
+                                               self.online_ctx_lookup(f, e)))
+                                    # Phrase pair processed
+                                    if self.online:
+                                        seen_phrases.add((f, e))
                                     yield Rule(self.category, f, e, scores, alignment)
 
                 if len(phrase) < self.max_length and i+spanlen < len(fwords) and pathlen+1 <= self.max_initial_size:
@@ -1148,7 +1176,29 @@ cdef class HieroCachingRuleFactory:
                         for (i, alt, pathlen) in frontier_nodes:
                             new_frontier.append((k, i, input_match + (i,), alt, pathlen, xnode, phrase +(xcat,), is_shadow_path))
             frontier = new_frontier
-                
+        
+        # Online rule extraction and scoring
+        if self.online:
+            f_syms = tuple(word[0][0] for word in fwords)
+            for (f, lex_i, lex_j) in self.get_f_phrases(f_syms):
+                spanlen = (lex_j - lex_i) + 1
+                if not sym_isvar(f[0]):
+                    spanlen += 1
+                if not sym_isvar(f[1]):
+                    spanlen += 1
+                for e in self.phrases_fe.get(f, ()):
+                    if (f, e) not in seen_phrases:
+                        # Don't add multiple instances of the same phrase here
+                        seen_phrases.add((f, e))
+                        scores = self.scorer.score(FeatureContext(
+                                f, e, 0, 0, 0,
+                                spanlen, None, None, 
+                                fwords, self.fda, self.eda,
+                                meta,
+                                self.online_ctx_lookup(f, e)))
+                        alignment = self.phrases_al[f][e]
+                        yield Rule(self.category, f, e, scores, alignment)
+             
         stop_time = monitor_cpu()
         logger.info("Total time for rule lookup, extraction, and scoring = %f seconds", (stop_time - start_time))
         gc.collect()
@@ -1828,6 +1878,8 @@ cdef class HieroCachingRuleFactory:
     # (Extract rules, update counts)
     def add_instance(self, f_words, e_words, alignment):
 
+        self.online = True
+        
         # Rules extracted from this instance
         # Track span of lexical items (terminals) to make
         # sure we don't extract the same rule for the same
@@ -1970,11 +2022,17 @@ cdef class HieroCachingRuleFactory:
                 continue
             extract(f_i, f_i, f_len + 1, -1, f_i, 0, [], [], False)
         
+        # Update possible phrases (samples)
+        # This could be more efficiently integrated with extraction
+        # at the cost of readability
+        for (f, lex_i, lex_j) in self.get_f_phrases(f_words):
+            self.samples_f[f] += 1
+            
         # Update phrase counts
         for rule in rules:
             (f_ph, e_ph, al) = rule[:3]
             self.phrases_f[f_ph] += 1
-            self.phrases_e[e_ph] += 1 
+            self.phrases_e[e_ph] += 1
             self.phrases_fe[f_ph][e_ph] += 1
             if not self.phrases_al[f_ph][e_ph]:
                 self.phrases_al[f_ph][e_ph] = al
@@ -1987,7 +2045,6 @@ cdef class HieroCachingRuleFactory:
             for e_w in e_words:
                 self.bilex_fe[f_w][e_w] += 1
 
-
     # Create a rule from source, target, non-terminals, and alignments
     def form_rule(self, f_i, e_i, f_span, e_span, nt, al):
     
@@ -2080,10 +2137,65 @@ cdef class HieroCachingRuleFactory:
         for ph in self.phrases_e:
             logger.info(str(ph) + ' ||| ' + str(self.phrases_e[ph]))
         logger.info('FE')
+        self.dump_online_rules()
+
+    def dump_online_rules(self):
         for ph in self.phrases_fe:
             for ph2 in self.phrases_fe[ph]:
                 logger.info(self.fmt_rule(str(ph), str(ph2), self.phrases_al[ph][ph2]) + ' ||| ' + str(self.phrases_fe[ph][ph2]))
+                    
+    # Lookup online stats for phrase pair (f, e).  Return None if no match.
+    # IMPORTANT: use get() to avoid adding items to defaultdict
+    def online_ctx_lookup(self, f, e):
+        if self.online:
+            fcount = self.phrases_f.get(f, 0)
+            fsample_count = self.samples_f.get(f, 0)
+            d = self.phrases_fe.get(f, None)
+            paircount = d.get(e, 0) if d else 0
+            return OnlineFeatureContext(fcount, fsample_count, paircount, self.bilex_f, self.bilex_e, self.bilex_fe)
+        return None
+    
+    # Find all phrases that we might try to extract
+    # (Used for EGivenFCoherent)
+    # Return set of (fphrase, lex_i, lex_j)
+    def get_f_phrases(self, f_words):
+
+        f_len = len(f_words)
+        phrases = set() # (fphrase, lex_i, lex_j)
         
+        def extract(f_i, f_j, lex_i, lex_j, wc, ntc, syms):
+            # Phrase extraction limits
+            if f_j > (f_len - 1) or (f_j - f_i) + 1 > self.max_initial_size:
+                return
+            # Extend with word
+            if wc + ntc < self.max_length:
+                syms.append(f_words[f_j])
+                f = Phrase(syms)
+                new_lex_i = min(lex_i, f_j)
+                new_lex_j = max(lex_j, f_j)
+                phrases.add((f, new_lex_i, new_lex_j))
+                extract(f_i, f_j + 1, new_lex_i, new_lex_j, wc + 1, ntc, syms)
+                syms.pop()
+            # Extend with existing non-terminal
+            if syms and sym_isvar(syms[-1]):
+                # Don't re-extract the same phrase
+                extract(f_i, f_j + 1, lex_i, lex_j, wc, ntc, syms)
+            # Extend with new non-terminal
+            if wc + ntc < self.max_length:
+                if not syms or (ntc < self.max_nonterminals and not sym_isvar(syms[-1])):
+                    syms.append(sym_setindex(self.category, ntc + 1))
+                    f = Phrase(syms)
+                    if wc > 0:
+                        phrases.add((f, lex_i, lex_j))
+                    extract(f_i, f_j + 1, lex_i, lex_j, wc, ntc + 1, syms)
+                    syms.pop()
+            
+        # Try to extract phrases from every f index
+        for f_i from 0 <= f_i < f_len:
+            extract(f_i, f_i, f_len, -1, 0, 0, [])
+
+        return phrases
+    
 # Spans are _inclusive_ on both ends [i, j]
 def span_check(vec, i, j):
     k = i
diff --git a/python/src/sa/sym.pxi b/python/src/sa/sym.pxi
index 81f19ef1..f253aec0 100644
--- a/python/src/sa/sym.pxi
+++ b/python/src/sa/sym.pxi
@@ -104,6 +104,9 @@ cdef int sym_setindex(int sym, int id):
 cdef int sym_fromstring(char* string, bint terminal):
     return ALPHABET.fromstring(string, terminal)
 
+def isvar(sym):
+    return sym_isvar(sym)
+
 def make_lattice(words):
     word_ids = (sym_fromstring(word, True) for word in words)
     return tuple(((word, None, 1), ) for word in word_ids)
diff --git a/training/crf/Makefile.am b/training/crf/Makefile.am
index 621ca803..4a8c30fd 100644
--- a/training/crf/Makefile.am
+++ b/training/crf/Makefile.am
@@ -4,7 +4,11 @@ bin_PROGRAMS = \
   mpi_extract_features \
   mpi_extract_reachable \
   mpi_flex_optimize \
-  mpi_online_optimize
+  mpi_online_optimize \
+  mpi_baum_welch
+
+mpi_baum_welch_SOURCES = mpi_baum_welch.cc
+mpi_baum_welch_LDADD = ../../decoder/libcdec.a ../../klm/search/libksearch.a ../../mteval/libmteval.a ../../utils/libutils.a ../../klm/lm/libklm.a ../../klm/util/libklm_util.a ../../klm/util/double-conversion/libklm_util_double.a -lz
 
 mpi_online_optimize_SOURCES = mpi_online_optimize.cc
 mpi_online_optimize_LDADD = ../../training/utils/libtraining_utils.a ../../decoder/libcdec.a ../../klm/search/libksearch.a ../../mteval/libmteval.a ../../utils/libutils.a ../../klm/lm/libklm.a ../../klm/util/libklm_util.a ../../klm/util/double-conversion/libklm_util_double.a -lz
diff --git a/training/crf/baum_welch_example/README.md b/training/crf/baum_welch_example/README.md
new file mode 100644
index 00000000..97525da5
--- /dev/null
+++ b/training/crf/baum_welch_example/README.md
@@ -0,0 +1,32 @@
+Here's how to do Baum-Welch training with `cdec`.
+
+## Set the tags you want.
+
+First, set the number of tags you want in tagset.txt (these
+can be any symbols, listed one after another, separated
+by whitespace), e.g.:
+
+    C1 C2 C3 C4
+
+## Extract the parameter feature names
+
+    ../mpi_extract_features -c cdec.ini -t train.txt
+
+If you have compiled with MPI, you can use `mpirun`:
+
+    mpirun -np 8 ../mpi_extract_features -c cdec.ini -t train.txt
+
+## Randomly initialize the weights file
+
+    sort -u features.* | ./random_init.pl > weights.init
+
+## Run training
+
+    ../mpi_baum_welch -c cdec.ini -t train.txt -w weights.init -n 50
+
+Again, if you have compiled with MPI, you can use `mpirun`:
+
+    mpirun -np 8 ../mpi_baum_welch -c cdec.ini -t train.txt -w weights.init -n 50
+
+The `-n` flag indicates how many iterations to run for.
+
diff --git a/training/crf/baum_welch_example/cdec.ini b/training/crf/baum_welch_example/cdec.ini
new file mode 100644
index 00000000..61203da7
--- /dev/null
+++ b/training/crf/baum_welch_example/cdec.ini
@@ -0,0 +1,5 @@
+feature_function=Tagger_BigramIndicator
+feature_function=LexicalPairIndicator
+formalism=tagger
+tagger_tagset=tagset.txt
+intersection_strategy=full
diff --git a/training/crf/baum_welch_example/random_init.pl b/training/crf/baum_welch_example/random_init.pl
new file mode 100755
index 00000000..98467ed1
--- /dev/null
+++ b/training/crf/baum_welch_example/random_init.pl
@@ -0,0 +1,9 @@
+#!/usr/bin/perl -w
+while(<>) {
+  chomp;
+  my ($a,$b,@d) =split /\s+/;
+  die "Bad input" if scalar @d > 0;
+  $r = -rand() * rand() - 0.5;
+  $r = 0 if $a =~ /^Uni:/;
+  print "$a $r\n";
+}
diff --git a/training/crf/baum_welch_example/tagset.txt b/training/crf/baum_welch_example/tagset.txt
new file mode 100644
index 00000000..93a48451
--- /dev/null
+++ b/training/crf/baum_welch_example/tagset.txt
@@ -0,0 +1 @@
+1 2 3 4
diff --git a/training/crf/baum_welch_example/train.txt b/training/crf/baum_welch_example/train.txt
new file mode 100644
index 00000000..e9c3455e
--- /dev/null
+++ b/training/crf/baum_welch_example/train.txt
@@ -0,0 +1,2000 @@
+t h e
+t o
+o f
+i n
+a n d
+a
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+f o r
+o n
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+m a i n t a i n
+p r e s e n c e
+j a k a r t a
+p a c k a g e
+y a r d s
+g a i n
+a c c o u n t
+s q u a d
+s h a r o n
+w i n g
+a c t i o n s
+a t h e n s
+s t r a t e g i c
+s t r e n g t h e n
+f r i e n d l y
+d e s t r o y e d
+a p p a r e n t l y
+c o n s e r v a t i v e
+g a i n s
+f a i l u r e
+f u t u r e s
+s h o t s
+r e l a t i o n s h i p
+c o m m i s s i o n e r
+m a l a y s i a n
+r e q u i r e d
+a t l a n t a
+a g r e e
+d e f e a t
+s t r i k e r
+a d v a n c e d
+b r a z i l i a n
+a s s e t s
+h o u s e s
+s u p p l i e s
+s a f e
+m i l l i o n s
+s o u g h t
+f r e s h
+v i d e o
+p r o s e c u t o r
+p u l l e d
+v e h i c l e
+t o l l
+p a r e n t s
+c e a s e
+a c t i v i s t s
+o r g a n i z e d
+e n t e r e d
+s h i i t e
+l a n g u a g e
+a b b a s
+b i n
+p r e v i o u s l y
+c l o s i n g
+w o r k s
+t e r r o r i s t s
+t o n y
+c o v e r
+f o l l o w
+l e g i s l a t i v e
+r i c h
+c l a s h e s
+i m p o s e d
+r a n
+m c c a i n
+s u c c e s s f u l
+s e v e n t h
+s c o r i n g
+c a u g h t
+a p p o i n t e d
+a l l i e s
+a d m i t t e d
+w o r l d w i d e
+o r d e r s
+d e m a n d e d
+c r e a t e d
+r a n k e d
+m i l i t a n t
+i n v e s t i g a t o r s
+s h o w i n g
+p o s s i b i l i t y
+s e a t
+d a u g h t e r
+s i t e s
+s h o r t l y
+c o m m e r c e
+n e t a n y a h u
+a d v a n c e
+a i r l i n e
+f i r m s
+a b r o a d
+f o u n d a t i o n
+c o m m i t m e n t
+p l e d g e d
+k i l l
+r e p r e s e n t a t i v e
+n o r t h w e s t
+s c e n e
+b e a t i n g
+i m p r o v e d
+r e s u m e
+w h o m
+s l i g h t l y
+v o t i n g
+b o m b i n g s
+s e r i o u s l y
+s e t t i n g
+c a r l o s
+e f f e c t i v e
+h k
+r e g u l a r
+j i a n g
+p r i n c e
+d e c l i n e
+b a y
+n o r t h e a s t
+s o l d i e r
+r e a c h i n g
+a g r e e m e n t s
+m i k e
+h u r t
+c r i t i c a l
+i d e a
+m i l o s e v i c
+f i s c a l
+t a r g e t s
+a g r i c u l t u r a l
+m u s h a r r a f
+d e s i g n e d
+o v e r n i g h t
+b o y
+d o z e n
+p r o d u c e
+c a l m
+s t a n d a r d s
+l e g i s l a t i o n
+s e n t e n c e
+w i t h d r a w a l
+s e e d e d
+c o m p o s i t e
+t r a d e d
+w i n t e r
+d a v i s
+t r u s t
+c l i m a t e
+i n d u s t r i e s
+p r o f i t s
+v o t e d
+c a m b o d i a
+s y r i a n
+s i g n s
+l o a n
+s t e e l
+e l e c t r i c i t y
+t e h r a n
+c i t i n g
+h u s b a n d
+b i t
+c o m b a t
+h a n d e d
+f e s t i v a l
+i m f
+p r e s i d e n c y
+c a p t u r e d
+s t u d e n t
+f i n e
+s t a t i o n s
+s i l v e r
+c h a v e z
+i n t e r
+m o m e n t
+t a b l e
+c o u p
+p o p e
+p r o v i n c e s
+a h m e d
+b u i l d i n g s
+o u t p u t
+l i b e r a t i o n
+m o n e t a r y
+c l o s e r
+c o l l e g e
+f l u
+a d v a n t a g e
+a s s i s t a n t
+g o n e
+s e c r e t
+x
+c a t h o l i c
+n a m e s
+l i s t e d
+f i n a l l y
+c a n c e r
+p r o d u c e d
+m e a s u r e
+f l e d
+l a r g e l y
+d e f e a t e d
+c o n g o
+b a s i c
+j e a n
+l o s e
+p r i z e
+b a n g k o k
+a s k
+f r a n c i s c o
+r e g i s t e r e d
+d i s a s t e r
+g o l f
+i n d i v i d u a l
+c o n t i n u e s
+w t o
+i n i t i a l
+a n y o n e
+q u a k e
+f a c e d
+s c i e n t i s t s
+m o b i l e
+p o s i t i o n s
+f i e l d s
+r e c o v e r y
+m u s e u m
+n u m b e r s
+d e n m a r k
+m a n i l a
+h o l d s
+c e n t
+e x
+e s t a b l i s h
+w i d e l y
+o f f i c e s
+i n s i s t e d
+u n i t s
+k a s h m i r
+r e f e r e n d u m
+l o c a t e d
+u p o n
+a l l o w i n g
+s c a l e
+o p p o s e d
+w a t c h
+i n d i c a t e d
+p a r t n e r
+e a r t h q u a k e
+s c a n d a l
+e v e r y o n e
+a p p r o a c h
+t r u c k
+i m p o r t a n c e
+t h r e a t s
+p o r t u g a l
+s e x
+r e c o r d s
+s u p e r
+s t o o d
+c o n t a c t
+m a t e r i a l s
+v i o l e n t
+p l a c e s
+a n a l y s t
+a d d s
+a l o n e
+g o e s
+m o v i e
+e x p e c t s
+a r t
+s e o u l
+m e x i c a n
+y e s t e r d a y
+p l a n e s
+n i n t h
+o n l i n e
+h e l i c o p t e r
+i m m i g r a t i o n
+p a r t n e r s
+i n f r a s t r u c t u r e
+b o a t
+v i s i t s
+n o r m a l
+s t a k e
+g u e r r i l l a s
+m a c a o
+w i l l i n g
+s u n
+a w a r d
+t e l l
+s o u t h w e s t
+s p o r t
+e n t e r
+r e s o l v e
+c h a n c e s
+m i a m i
+e l
+e n t i r e
diff --git a/training/crf/mpi_baum_welch.cc b/training/crf/mpi_baum_welch.cc
new file mode 100644
index 00000000..d69b1769
--- /dev/null
+++ b/training/crf/mpi_baum_welch.cc
@@ -0,0 +1,316 @@
+#include <sstream>
+#include <iostream>
+#include <vector>
+#include <cassert>
+#include <cmath>
+
+#include "config.h"
+#ifdef HAVE_MPI
+#include <boost/mpi/timer.hpp>
+#include <boost/mpi.hpp>
+namespace mpi = boost::mpi;
+#endif
+
+#include <boost/unordered_map.hpp>
+#include <boost/functional/hash.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/program_options.hpp>
+#include <boost/program_options/variables_map.hpp>
+
+#include "sentence_metadata.h"
+#include "verbose.h"
+#include "hg.h"
+#include "prob.h"
+#include "inside_outside.h"
+#include "ff_register.h"
+#include "decoder.h"
+#include "filelib.h"
+#include "stringlib.h"
+#include "fdict.h"
+#include "weights.h"
+#include "sparse_vector.h"
+
+using namespace std;
+namespace po = boost::program_options;
+
+bool InitCommandLine(int argc, char** argv, po::variables_map* conf) {
+  po::options_description opts("Configuration options");
+  opts.add_options()
+        ("input_weights,w",po::value<string>(),"Input feature weights file")
+        ("iterations,n",po::value<unsigned>()->default_value(50), "Number of training iterations")
+        ("training_data,t",po::value<string>(),"Training data")
+        ("decoder_config,c",po::value<string>(),"Decoder configuration file");
+  po::options_description clo("Command line options");
+  clo.add_options()
+        ("config", po::value<string>(), "Configuration file")
+        ("help,h", "Print this help message and exit");
+  po::options_description dconfig_options, dcmdline_options;
+  dconfig_options.add(opts);
+  dcmdline_options.add(opts).add(clo);
+  
+  po::store(parse_command_line(argc, argv, dcmdline_options), *conf);
+  if (conf->count("config")) {
+    ifstream config((*conf)["config"].as<string>().c_str());
+    po::store(po::parse_config_file(config, dconfig_options), *conf);
+  }
+  po::notify(*conf);
+
+  if (conf->count("help") || !conf->count("input_weights") || !(conf->count("training_data")) || !conf->count("decoder_config")) {
+    cerr << dcmdline_options << endl;
+    return false;
+  }
+  return true;
+}
+
+void ReadTrainingCorpus(const string& fname, int rank, int size, vector<string>* c) {
+  ReadFile rf(fname);
+  istream& in = *rf.stream();
+  string line;
+  int lc = 0;
+  while(in) {
+    getline(in, line);
+    if (!in) break;
+    if (lc % size == rank) c->push_back(line);
+    ++lc;
+  }
+}
+
+static const double kMINUS_EPSILON = -1e-6;
+
+struct TrainingObserver : public DecoderObserver {
+  void Reset() {
+    acc_grad.clear();
+    acc_obj = 0;
+    total_complete = 0;
+    trg_words = 0;
+  } 
+
+  void SetLocalGradientAndObjective(vector<double>* g, double* o) const {
+    *o = acc_obj;
+    for (SparseVector<double>::const_iterator it = acc_grad.begin(); it != acc_grad.end(); ++it)
+      (*g)[it->first] = it->second;
+  }
+
+  virtual void NotifyDecodingStart(const SentenceMetadata& smeta) {
+    state = 1;
+  }
+
+  // compute model expectations, denominator of objective
+  virtual void NotifyTranslationForest(const SentenceMetadata& smeta, Hypergraph* hg) {
+    assert(state == 1);
+    trg_words += smeta.GetSourceLength();
+    state = 2;
+    SparseVector<prob_t> exps;
+    const prob_t z = InsideOutside<prob_t,
+                                   EdgeProb,
+                                   SparseVector<prob_t>,
+                                   EdgeFeaturesAndProbWeightFunction>(*hg, &exps);
+    exps /= z;
+    for (SparseVector<prob_t>::iterator it = exps.begin(); it != exps.end(); ++it)
+      acc_grad.add_value(it->first, it->second.as_float());
+
+    acc_obj += log(z);
+  }
+
+  // compute "empirical" expectations, numerator of objective
+  virtual void NotifyAlignmentForest(const SentenceMetadata& smeta, Hypergraph* hg) {
+    cerr << "Shouldn't get an alignment forest!\n";
+    abort();
+  }
+
+  virtual void NotifyDecodingComplete(const SentenceMetadata& smeta) {
+    ++total_complete;
+  }
+
+  int total_complete;
+  SparseVector<double> acc_grad;
+  double acc_obj;
+  unsigned trg_words;
+  int state;
+};
+
+void ReadConfig(const string& ini, vector<string>* out) {
+  ReadFile rf(ini);
+  istream& in = *rf.stream();
+  while(in) {
+    string line;
+    getline(in, line);
+    if (!in) continue;
+    out->push_back(line);
+  }
+}
+
+void StoreConfig(const vector<string>& cfg, istringstream* o) {
+  ostringstream os;
+  for (int i = 0; i < cfg.size(); ++i) { os << cfg[i] << endl; }
+  o->str(os.str());
+}
+
+#if 0
+template <typename T>
+struct VectorPlus : public binary_function<vector<T>, vector<T>, vector<T> >  {
+  vector<T> operator()(const vector<int>& a, const vector<int>& b) const {
+    assert(a.size() == b.size());
+    vector<T> v(a.size());
+    transform(a.begin(), a.end(), b.begin(), v.begin(), plus<T>()); 
+    return v;
+  } 
+}; 
+#endif
+
+int main(int argc, char** argv) {
+#ifdef HAVE_MPI
+  mpi::environment env(argc, argv);
+  mpi::communicator world;
+  const int size = world.size(); 
+  const int rank = world.rank();
+#else
+  const int size = 1;
+  const int rank = 0;
+#endif
+  SetSilent(true);  // turn off verbose decoder output
+  register_feature_functions();
+
+  po::variables_map conf;
+  if (!InitCommandLine(argc, argv, &conf)) return 1;
+  const unsigned iterations = conf["iterations"].as<unsigned>();
+
+  // load cdec.ini and set up decoder
+  vector<string> cdec_ini;
+  ReadConfig(conf["decoder_config"].as<string>(), &cdec_ini);
+  istringstream ini;
+  StoreConfig(cdec_ini, &ini);
+  Decoder* decoder = new Decoder(&ini);
+  if (decoder->GetConf()["input"].as<string>() != "-") {
+    cerr << "cdec.ini must not set an input file\n";
+    return 1;
+  }
+
+  // load initial weights
+  if (rank == 0) { cerr << "Loading weights...\n"; }
+  vector<weight_t>& lambdas = decoder->CurrentWeightVector();
+  Weights::InitFromFile(conf["input_weights"].as<string>(), &lambdas);
+  if (rank == 0) { cerr << "Done loading weights.\n"; }
+
+  // freeze feature set (should be optional?)
+  const bool freeze_feature_set = true;
+  if (freeze_feature_set) FD::Freeze();
+
+  const int num_feats = FD::NumFeats();
+  if (rank == 0) cerr << "Number of features: " << num_feats << endl;
+  lambdas.resize(num_feats);
+
+  vector<double> gradient(num_feats, 0.0);
+  vector<double> rcv_grad;
+  rcv_grad.clear();
+  bool converged = false;
+
+  vector<string> corpus, test_corpus;
+  ReadTrainingCorpus(conf["training_data"].as<string>(), rank, size, &corpus);
+  assert(corpus.size() > 0);
+  if (conf.count("test_data"))
+    ReadTrainingCorpus(conf["test_data"].as<string>(), rank, size, &test_corpus);
+
+  // build map from feature id to the accumulator that should normalize
+  boost::unordered_map<std::string, boost::unordered_map<int, double>, boost::hash<std::string> > ccs;
+  vector<boost::unordered_map<int, double>* > cpd_to_acc;
+  if (rank == 0) {
+    cpd_to_acc.resize(num_feats);
+    for (unsigned f = 1; f < num_feats; ++f) {
+      string normalizer;
+      //0 ||| 7 9 ||| Bi:BOS_7=1 Bi:7_9=1 Bi:9_EOS=1 Id:a:7=1 Uni:7=1 Id:b:9=1 Uni:9=1 ||| 0
+      const string& fstr = FD::Convert(f);
+      if (fstr.find("Bi:") == 0) {
+        size_t pos = fstr.rfind('_');
+        if (pos < fstr.size())
+          normalizer = fstr.substr(0, pos);
+      } else if (fstr.find("Id:") == 0) {
+        size_t pos = fstr.rfind(':');
+        if (pos < fstr.size()) {
+          normalizer = "Emit:";
+          normalizer += fstr.substr(pos);
+        }
+      }
+      if (normalizer.size() > 0) {
+        boost::unordered_map<int, double>& acc = ccs[normalizer];
+        cpd_to_acc[f] = &acc;
+      }
+    }
+  }
+
+  TrainingObserver observer;
+  int iteration = 0;
+  while (!converged) {
+    ++iteration;
+    observer.Reset();
+#ifdef HAVE_MPI
+    mpi::timer timer;
+    world.barrier();
+#endif
+    if (rank == 0) {
+      cerr << "Starting decoding... (~" << corpus.size() << " sentences / proc)\n";
+      cerr << "  Testset size: " << test_corpus.size() << " sentences / proc)\n";
+      for(boost::unordered_map<string, boost::unordered_map<int,double>, boost::hash<string> >::iterator it = ccs.begin(); it != ccs.end(); ++it)
+        it->second.clear();
+    }
+    for (int i = 0; i < corpus.size(); ++i)
+      decoder->Decode(corpus[i], &observer);
+    cerr << "  process " << rank << '/' << size << " done\n";
+    fill(gradient.begin(), gradient.end(), 0);
+    double objective = 0;
+    observer.SetLocalGradientAndObjective(&gradient, &objective);
+
+    unsigned total_words = 0;
+#ifdef HAVE_MPI
+    double to = 0;
+    rcv_grad.resize(num_feats, 0.0);
+    mpi::reduce(world, &gradient[0], gradient.size(), &rcv_grad[0], plus<double>(), 0);
+    swap(gradient, rcv_grad);
+    rcv_grad.clear();
+
+    reduce(world, observer.trg_words, total_words, std::plus<unsigned>(), 0);
+    mpi::reduce(world, objective, to, plus<double>(), 0);
+    objective = to;
+#else
+    total_words = observer.trg_words;
+#endif
+    if (rank == 0) {  // run optimizer only on rank=0 node
+      cerr << "TRAINING CORPUS: ln p(x)=" << objective << "\t log_2 p(x) = " << (objective/log(2)) << "\t cross entropy = " << (objective/log(2) / total_words) << "\t ppl = " << pow(2, (-objective/log(2) / total_words)) << endl;
+      for (unsigned f = 1; f < num_feats; ++f) {
+        boost::unordered_map<int, double>* m = cpd_to_acc[f];
+        if (m && gradient[f]) {
+          (*m)[f] += gradient[f];
+        }
+        for(boost::unordered_map<string, boost::unordered_map<int,double>, boost::hash<string> >::iterator it = ccs.begin(); it != ccs.end(); ++it) {
+          const boost::unordered_map<int,double>& ccs = it->second;
+          double z = 0;
+          for (boost::unordered_map<int,double>::const_iterator ci = ccs.begin(); ci != ccs.end(); ++ci)
+            z += ci->second + 1e-09;
+          double lz = log(z);
+          for (boost::unordered_map<int,double>::const_iterator ci = ccs.begin(); ci != ccs.end(); ++ci)
+            lambdas[ci->first] = log(ci->second + 1e-09) - lz;
+        }
+      }
+      Weights::SanityCheck(lambdas);
+      Weights::ShowLargestFeatures(lambdas);
+
+      converged = (iteration == iterations);
+
+      string fname = "weights.cur.gz";
+      if (converged) { fname = "weights.final.gz"; }
+      ostringstream vv;
+      vv << "Objective = " << objective << "  (eval count=" << iteration << ")";
+      const string svv = vv.str();
+      Weights::WriteToFile(fname, lambdas, true, &svv);
+    }  // rank == 0
+    int cint = converged;
+#ifdef HAVE_MPI
+    mpi::broadcast(world, &lambdas[0], lambdas.size(), 0);
+    mpi::broadcast(world, cint, 0);
+    if (rank == 0) { cerr << "  ELAPSED TIME THIS ITERATION=" << timer.elapsed() << endl; }
+#endif
+    converged = cint;
+  }
+  return 0;
+}
+
diff --git a/training/utils/Makefile.am b/training/utils/Makefile.am
index 156a2462..27c6e344 100644
--- a/training/utils/Makefile.am
+++ b/training/utils/Makefile.am
@@ -11,10 +11,10 @@ noinst_PROGRAMS = \
 
 EXTRA_DIST = decode-and-evaluate.pl libcall.pl parallelize.pl
 
-sentserver_SOURCES = sentserver.c
+sentserver_SOURCES = sentserver.cc
 sentserver_LDFLAGS = -pthread
 
-sentclient_SOURCES = sentclient.c
+sentclient_SOURCES = sentclient.cc
 sentclient_LDFLAGS = -pthread
 
 TESTS = lbfgs_test optimize_test
diff --git a/training/utils/sentclient.c b/training/utils/sentclient.cc
index 91d994ab..91d994ab 100644
--- a/training/utils/sentclient.c
+++ b/training/utils/sentclient.cc
diff --git a/training/utils/sentserver.c b/training/utils/sentserver.cc
index c20b4fa6..b425955f 100644
--- a/training/utils/sentserver.c
+++ b/training/utils/sentserver.cc
@@ -85,7 +85,7 @@ struct line * queue_get(int fid) {
 		if (log_mutex) fprintf(stderr, "Unlocking input mutex (%d)\n", fid);
 		pthread_mutex_unlock(&input_mutex);
 
-		cur = malloc(sizeof (struct line));
+		cur = (line*)malloc(sizeof (struct line));
 		cur->id = n_sent;
 		cur->s = s;
 		cur->next = NULL;
@@ -99,7 +99,7 @@ struct line * queue_get(int fid) {
 			fprintf(stderr, "Received ===SYNCH=== signal (fid %d)\n", fid);
 			// Note: queue_finish calls free(cur->s).
 			// Therefore we need to create a new string here.
-			synch = malloc((strlen("===SYNCH===\n")+2) * sizeof (char));
+			synch = (char*)malloc((strlen("===SYNCH===\n")+2) * sizeof (char));
 			synch = strcpy(synch, s);
 
 			if (log_mutex) fprintf(stderr, "Unlocking queue mutex (%d)\n", fid);
@@ -247,7 +247,7 @@ void queue_finish(struct line *node, char *s, int fid) {
 char * read_line(int fd, int multiline) {
   int size = 80;
   char errorbuf[100];
-  char *s = malloc(size+2);
+  char *s = (char*)malloc(size+2);
   int result, errors=0;
   int i = 0;
 
@@ -257,7 +257,7 @@ char * read_line(int fd, int multiline) {
     if (result < 0) {
       perror("read()");
       sprintf(errorbuf, "Error code: %d\n", errno);
-      fprintf(stderr, errorbuf);
+      fputs(errorbuf, stderr);
       errors++;
       if (errors > 5) {
 	free(s);
@@ -301,7 +301,7 @@ char * read_line(int fd, int multiline) {
 
       if (i == size) {
 	size = size*2;
-	s = realloc(s, size+2);
+	s = (char*)realloc(s, size+2);
       }
     }
 
@@ -343,7 +343,7 @@ void * new_client(void *arg) {
       if (result < strlen(cur->s)){
         perror("write()");
         sprintf(errorbuf, "Error code: %d\n", errno);
-        fprintf(stderr, errorbuf);
+        fputs(errorbuf, stderr);
 
         pthread_mutex_lock(&clients_mutex);
         n_clients--;
@@ -474,7 +474,7 @@ int main (int argc, char *argv[]) {
       sleep(1);
       continue;
     }
-    client = malloc(sizeof(struct clientinfo));
+    client = (clientinfo*)malloc(sizeof(struct clientinfo));
     client->s = g;
     bcopy(&from, &client->sin, len);