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22:45
Oh, man, I'm so close to a different 6-byte solution to the a^n b^n challenge. Unfortunately, ạḍ\<₁ᵐ succeeds on empty string when it should fail.
ạḍ\<₁ᵐh is an easy fix for 7 bytes.
It's too bad transpose doesn't work on a list of strings, then wouldn't be necessary.
Another 7-byter: ạḍ\=h<₁

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