How to compare values between two different looping ta

Hi,
I have an xml file like below.

<G>
 <X>
    <A>
       <C>111</C>
       <D>222</D>
    </A>
    <A>
       <C>232</C>
       <D>3232</D>
    </A>
 </X>

 <Y>
    <B>
       <C>232</C>
       <E>777</E>
    </B>
    <B>
       <C>111</C>
       <E>000</E>
    </B>
    <B>
       <C>232</C>
       <E>777</E>
    </B>
 </Y>
</G>

C        D         E
=======================
111      222       000

Thanks in advance,
Murali.

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