[ Use <p> to mark the start of paragraphs, and wrap computer text and other preformatted text using <c>...</c>. ] 

while (<>) {
   my ($key) = /^(..)/s;
   print if !$seen{$key}++;
}

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In reply to Re: eliminating duplicates with filters by ikegami
in thread eliminating duplicates with filters by snow28

Title:
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