xml tree

<root>
   <parent>
      <child>
         <string>A</string>
         <string>B</string>
      </child>
      <child>
         <string>C</string>
         <number>1</number>
         <number>2</number>
         <grandchild>
            <string>DD</string>
            <substring>EE</substring>
            <number>33</number>
         </grandchild>
      </child>
   </parent>
   <parent>
      <child>
         <string>F</string>
         <date>2015-02-12</date>
      </child>
      <nephew>
         <string>G</string>
      </nephew>
   </parent>
   <uncle>
      <niece>
         <string>H</string>
      </niece>
   </uncle>
</root>