<?xml version="1.0"?>
<docs>
<doc1>
	<a level="1">A1</a>
	<b level="1">B2</b>
	<c level="1">C3</c>
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<doc2>
	<a level="2">A1</a>
	<b level="2">B2</b>
	<c level="2">C3</c>
	<doc3>
		<a level="Out1">A1</a>
		<bat level="3">Out2</bat>
		<cat level="3">C33</cat>
	</doc3>
</doc2>
</docs>