[Redoubts]

Usually crossword answers make sense. This ended up just looking like a jumble of letters.

[127001brewer]

The jumble of letters made sense in the context of the regex problems.

[alanh]

The first regex crossword I ever saw — https://gregable.com/p/regexp-puzzle.html — also was sort of a jumble of letters, but it actually encoded a secret message (I don’t want to say more — spoilers)