1<?xml version="1.0"?> 2<docs> 3 <doc2> 4 <a level="2"> 5 <b level="3">3-B2</b> 6 <c level="3">3-C3</c> 7 <d level="3">Hello 8 <e level="4">Success</e> 9 <!-- Me, too --> 10 </d> 11 </a> 12 </doc2> 13</docs>