I did like your trick of turning the regex inside out to check for incrementing runs of letters, but 'bcf' from OP's example argues against that being what is required. Nice trick though. :)

DWIM is Perl's answer to Gödel

In reply to Re^4: How to get Incremental charecter groups in a string by GrandFather
in thread How to get Incremental charecter groups in a string by Dora

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