diff --git a/contrib/other-builds/extract-mixed-syntax/Main.cpp b/contrib/other-builds/extract-mixed-syntax/Main.cpp
index 721cf66b9..d23e5e3dc 100644
--- a/contrib/other-builds/extract-mixed-syntax/Main.cpp
+++ b/contrib/other-builds/extract-mixed-syntax/Main.cpp
@@ -39,6 +39,7 @@ int main(int argc, char** argv)
   Moses::InputFileStream strmSource(pathSource);
   Moses::InputFileStream strmAlignment(pathAlignment);
   Moses::OutputFileStream m_extractFile(pathExtract);
+  Moses::OutputFileStream m_extractInvFile(pathExtract + ".inv");
 
 
   // MAIN LOOP
@@ -69,7 +70,8 @@ int main(int argc, char** argv)
 	  rules.Consolidate(params);
 	  //cerr << rules.Debug();
 
-	  rules.Output(m_extractFile);
+	  rules.Output(m_extractFile, true);
+	  rules.Output(m_extractInvFile, false);
   }
 
 
diff --git a/contrib/other-builds/extract-mixed-syntax/Rule.cpp b/contrib/other-builds/extract-mixed-syntax/Rule.cpp
index 353697cf9..e7aaf4e2e 100644
--- a/contrib/other-builds/extract-mixed-syntax/Rule.cpp
+++ b/contrib/other-builds/extract-mixed-syntax/Rule.cpp
@@ -121,25 +121,30 @@ std::string Rule::Debug() const
   return out.str();
 }
 
-void Rule::Output(std::ostream &out) const
+void Rule::Output(std::ostream &out, bool forward) const
 {
-  // source
-  for (size_t i =  0; i < m_source.GetSize(); ++i) {
-	  const RuleSymbol &symbol = *m_source[i];
-	  symbol.Output(out);
-	  out << " ";
-  }
-  m_lhs.Output(out, Moses::Input);
+  if (forward) {
+	  // source
+	  m_source.Output(out);
+	  m_lhs.Output(out, Moses::Input);
 
-  out << " ||| ";
+	  out << " ||| ";
 
-  // target
-  for (size_t i =  0; i < m_target.GetSize(); ++i) {
-	  const RuleSymbol &symbol = *m_target[i];
-	  symbol.Output(out);
-	  out << " ";
+	  // target
+	  m_target.Output(out);
+	  m_lhs.Output(out, Moses::Output);
+  }
+  else {
+	  // target
+	  m_target.Output(out);
+	  m_lhs.Output(out, Moses::Output);
+
+	  out << " ||| ";
+
+	  // source
+	  m_source.Output(out);
+	  m_lhs.Output(out, Moses::Input);
   }
-  m_lhs.Output(out, Moses::Output);
 
   out << " ||| ";
 
@@ -147,7 +152,13 @@ void Rule::Output(std::ostream &out) const
   Alignments::const_iterator iterAlign;
   for (iterAlign =  m_alignments.begin(); iterAlign != m_alignments.end(); ++iterAlign) {
 	  const std::pair<int,int> &alignPair = *iterAlign;
-	  out << alignPair.first << "-" << alignPair.second << " ";
+
+	  if (forward) {
+		  out << alignPair.first << "-" << alignPair.second << " ";
+	  }
+	  else {
+		  out << alignPair.second << "-" << alignPair.first << " ";
+	  }
   }
 
   out << "||| ";
diff --git a/contrib/other-builds/extract-mixed-syntax/Rule.h b/contrib/other-builds/extract-mixed-syntax/Rule.h
index 719a3f6c6..6078b38e9 100644
--- a/contrib/other-builds/extract-mixed-syntax/Rule.h
+++ b/contrib/other-builds/extract-mixed-syntax/Rule.h
@@ -52,7 +52,7 @@ public:
 	{ return m_alignments; }
 
 	std::string Debug() const;
-	void Output(std::ostream &out) const;
+	void Output(std::ostream &out, bool forward) const;
 
 	void Prevalidate(const Parameter &params);
 	void CreateTarget(const Parameter &params);
diff --git a/contrib/other-builds/extract-mixed-syntax/RulePhrase.cpp b/contrib/other-builds/extract-mixed-syntax/RulePhrase.cpp
index 1cc974ba0..c357c6409 100644
--- a/contrib/other-builds/extract-mixed-syntax/RulePhrase.cpp
+++ b/contrib/other-builds/extract-mixed-syntax/RulePhrase.cpp
@@ -30,3 +30,12 @@ int RulePhrase::Compare(const RulePhrase &other) const
 
   return 0;
 }
+
+void RulePhrase::Output(std::ostream &out) const
+{
+  for (size_t i =  0; i < m_coll.size(); ++i) {
+	  const RuleSymbol &symbol = *m_coll[i];
+	  symbol.Output(out);
+	  out << " ";
+  }
+}
diff --git a/contrib/other-builds/extract-mixed-syntax/RulePhrase.h b/contrib/other-builds/extract-mixed-syntax/RulePhrase.h
index 4f2183d94..382b50d37 100644
--- a/contrib/other-builds/extract-mixed-syntax/RulePhrase.h
+++ b/contrib/other-builds/extract-mixed-syntax/RulePhrase.h
@@ -10,6 +10,7 @@
 
 #include <vector>
 #include <cstddef>
+#include <iostream>
 
 class RuleSymbol;
 
@@ -33,6 +34,7 @@ public:
 
   int Compare(const RulePhrase &other) const;
 
+  void Output(std::ostream &out) const;
 };
 
 #endif /* RULEPHRASE_H_ */
diff --git a/contrib/other-builds/extract-mixed-syntax/Rules.cpp b/contrib/other-builds/extract-mixed-syntax/Rules.cpp
index 4ede877d7..bbd8c0c9b 100644
--- a/contrib/other-builds/extract-mixed-syntax/Rules.cpp
+++ b/contrib/other-builds/extract-mixed-syntax/Rules.cpp
@@ -138,12 +138,12 @@ std::string Rules::Debug() const
 	return out.str();
 }
 
-void Rules::Output(std::ostream &out) const
+void Rules::Output(std::ostream &out, bool forward) const
 {
 	std::set<Rule*, CompareRules>::const_iterator iter;
 	for (iter = m_mergeRules.begin(); iter != m_mergeRules.end(); ++iter) {
 		const Rule &rule = **iter;
-		rule.Output(out);
+		rule.Output(out, forward);
 		out << endl;
 	}
 }
diff --git a/contrib/other-builds/extract-mixed-syntax/Rules.h b/contrib/other-builds/extract-mixed-syntax/Rules.h
index 056c0e619..9ca41cf6e 100644
--- a/contrib/other-builds/extract-mixed-syntax/Rules.h
+++ b/contrib/other-builds/extract-mixed-syntax/Rules.h
@@ -48,7 +48,7 @@ public:
 	void Consolidate(const Parameter &params);
 
 	std::string Debug() const;
-	void Output(std::ostream &out) const;
+	void Output(std::ostream &out, bool forward) const;
 
 protected:
 	const AlignedSentence &m_alignedSentence;