Oh, is *that* what we're doing then. :) In which case replace your last line with this: 
    @words = sort grep !$seen{$_ = lc}++, @words

[download]
A couple characters shorter, plus it's faster because the sort is done after you've filtered out duplicates and common words.

In reply to RE: Re: List processing performance by btrott
in thread List processing performance by Odud

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