INPUT:
<ext>
abc    <abc><p>ahgkslkjs</p>
<p>hai</p></abc>
abc    <abc><p>ahgkslkjs</p></abc>
</ext>

OUTPUT:
<ext>
<first>abc</first><second><abc><p>ahgkslkjs</p>
<p>hai</p></abc></second>
<first>abc</first><second><abc><p>ahgkslkjs</p></abc>
</second></ext>