<routes>
    <flow id="type1" color="1,1,0"  begin="0" end="1" number="1">
        <route edges="2/1to2/2 2/2to3/2"/>
    </flow>
    <flow id="type2" color="1,1,0"  begin="0" end="1" number="1">
        <route edges="2/1to2/2 2/3to1/3"/>
    </flow>
    <flow id="type3" color="1,1,0" from="2/1to2/2" to="2/3to1/3" begin="0" end="1" number="1"/>
</routes>
