It's hard to tell from the source what the input looks like, and what should be done...

Do I understand it right that
1) Input has [ACGT] sequences + some comment lines starting with >?
2) You need to find strings of 12 nucleotides ending in a GG that occur in the input only once?

It would be nice if you posted a short input sample (although I guess it's may not generate the needed discrepancy).

In reply to Re: unique sequences by Dallaylaen
in thread unique sequences by Anonymous Monk

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