Help with matching

Hi,

I've got a document, part of whose structure are some elements 
of the form:

<foo>
 <bar>1</bar>
 <bar>1</bar>
</foo>

and also :

<foo>
 <bar>
   <bar>3</bar><bar>4</bar>
 </bar>
</foo>

I'm writing to write a template matching rule which treats the 
second case separately from the first. However I can't seem to 
get it to work. I've tried foo/bar and foo/bar/bar rules but 
that didn't work. (also bar/bar, foo/*/bar, foo/bar/*, //foo/bar, 
and other combinations). I think I'm probably missing something 
obvious

Any tips?

Thanks.

L.

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