<?xml version="1.0" encoding="UTF-8"?>
<node-list>
    <node node-num="1">
        <sibling>2</sibling>
        <sibling>3</sibling>
    </node>
    <node node-num="2">
        <sibling>1</sibling>
        <sibling>3</sibling>
    </node>
    <node node-num="3">
        <sibling>1</sibling>
        <sibling>2</sibling>
    </node>
</node-list>