in reply to RegEx + vs. {1,}
The problem is not with the (\w{2,}?), because it will happily match to ab in
$x =~ /((\w{2,}?).*\g2.*?)+/;and
$x =~ /((\w{2,}?).*?\g2.*?)+?/;You are asking the regex to give you a sequence which is repeated, and you can either get the longest match (greedy) or the shortest one (ungreedy)
The only solution for your problem that I can think of, is to capture all matches that this regex finds (list context), then counting how often each captured sequence occurs, and selecting the one that occurs most often.
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