xml problem in parsing the great grandchildren

[OmPs]

http://pastebin.com/GCD6J0wd

I am stuck here. What I am looking for  is description of the system
memory, but system has lot of places where class=memory is used and hence i
can't use it. i need the one's which has id=bank:0 .. n and collect the
decryption of it.

I don't have option to use lxml.
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