Hello everyone! Could you please tell me how to do the following. Say, we have a word ferber. I wanna substitute "e" with "a" in all combinations, so that I have following words:

farber

ferbar

farbar

Maybe, there is even a "one-line" solution? Thanks in advance

In reply to Substitution of a particular letter in all combinations of positions in word (see inside) by Doctrin

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