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diff --git a/scripts/training/phrase-extract/AlignmentPhrase.h b/scripts/training/phrase-extract/AlignmentPhrase.h
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+++ b/scripts/training/phrase-extract/AlignmentPhrase.h
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+// $Id$
+/***********************************************************************
+Moses - factored phrase-based language decoder
+Copyright (C) 2006 University of Edinburgh
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+***********************************************************************/
+
+#pragma once
+
+#include <vector>
+#include <set>
+
+class WordsRange;
+
+
+class AlignmentElement
+{
+protected:
+	std::set<size_t> m_elements;
+public:
+	typedef std::set<size_t>::iterator iterator;
+	typedef std::set<size_t>::const_iterator const_iterator;
+	const_iterator begin() const { return m_elements.begin(); }
+	const_iterator end() const { return m_elements.end(); }
+
+	AlignmentElement()
+	{}
+
+	size_t GetSize() const
+	{
+		return m_elements.size();
+	}
+
+	void Merge(size_t align);
+};
+
+class AlignmentPhrase
+{
+protected:
+	std::vector<AlignmentElement> m_elements;
+public:
+	AlignmentPhrase(size_t size)
+		:m_elements(size)
+	{}
+	void Merge(const AlignmentPhrase &newAlignment, const WordsRange &newAlignmentRange);
+	void Merge(const std::vector< std::vector<size_t> > &source);
+	size_t GetSize() const
+	{
+		return m_elements.size();
+	}
+	const AlignmentElement &GetElement(size_t pos) const
+	{
+		return m_elements[pos];
+	}
+};
+
+
+