<?xml version="1.0" encoding="UTF-8"?>
<flow>
    <chain name="chain1">
        <then value="a"/>
        THEN(a)
    </chain>

    <chain name="chain2">
        THEN(b)
    </chain>

    <chain name="chain3">
        THEN(c)
    </chain>

    <chain name="chain4">
        THEN(d)
    </chain>
</flow>