<a>
 <b>b content,
  <d>d in b,</d>
 </b>
 <c>
  <d>d in c,</d>

<g>g content,</g>


 </c>
 <e> </e>
 <f>f content,
   <g>g in f,
   <d>d in f/g,
    </d> </g> </f>
</a>

