This might help you out a bit.
http://perldoc.perl.org/perlretut.html
moritz was kind enough to suggest it for my problem which was similar. And I was able to come up with a solution for a similar problem.
http://www.perlmonks.org/?node_id=866173
Especially the part on global matching
Global matching
Perl will assign the matches temporarily to $1 $2 $3 until the next match. You can assign them more permanently by building an array and heading onward to the next match.
I know the match reg ex is a little complicated for this example but you get the general idea..
1. $x = "cat dog house"; # 3 words
2. $x =~ /^\s*(\w+)\s+(\w+)\s+(\w+)\s*$/; # matches,
3. # $1 = 'cat'
4. # $2 = 'dog'
5. # $3 = 'house'
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