a weak spot for me, <and> I've got a  question that's
 that's got me stumped. Here's <the> problem I'm trying to solve. 
 what I'd  like to do <is> capture <the> word <and> X number of words before
 X number of words before <and> after it  while tagging <the> matching word in the captured
 tagging <the> matching word in <the> captured text. My inital thought 
 this. The problem I have <is> that if there <is>  more than one term and
 <is>  more than one term <and> they overlap, <the> nth term will not be
 annotated.  So my next thought <is> lookahead/lookbehind, but they don't capture. 
 regex? Is a regex even <the> best  way to do this?