... in ... genomic encoding ... 'N' means 'aNy' [w]hereas 'B' means 'any except A'.

I did not know that.

With my very limited understanding...

Well, your understanding is nowhere near as limited as mine and, as you say, the OPer seems happy, so...

In reply to Re^4: string match using with an N in any position by AnomalousMonk
in thread string match using with an N in any position by biobee07

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