GrandFather,
If you are feeling bored, I would be interested in seeing how my unpack solution I came up with for Challenge: Fast Common Substrings does. In a nutshell, we programmatically generate a template to extract all substrings of a given length.

Cheers - L~R

In reply to Re^3: finding number of contiguous letters by Limbic~Region
in thread finding number of contiguous letters by Marknel

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