simple.graphml

<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
 <key id="key0" for="node" attr.name="name" attr.type="string" /> 
  <graph id="G" edgedefault="directed" parse.nodeids="canonical" parse.edgeids="canonical" parse.order="nodesfirst">
    <node id="n0">
	<data key="key0">!</data>
    </node>
    <node id="n1">
	<data key="key0">!</data>
    </node>
    <node id="n2">
	<data key="key0">!</data>
    </node>
    <node id="n3">
	<data key="key0">!</data>
    </node>
    <node id="n4">
	<data key="key0">i</data>
    </node>
    <node id="n5">
	<data key="key0">|</data>
    </node>
    <node id="n6">
	<data key="key0">i</data>
    </node>
    <node id="n7">
	<data key="key0">&amp;</data>
    </node>
    <node id="n8">
	<data key="key0">i</data>
    </node>
    <edge source="n0" target="n1"/>
    <edge source="n1" target="n2"/>
    <edge source="n2" target="n3"/>
    <edge source="n3" target="n5"/>
    <edge source="n5" target="n4"/>
    <edge source="n5" target="n7"/>
    <edge source="n7" target="n6"/>
    <edge source="n7" target="n8"/>
  </graph>
</graphml>