It depends on whether you count deletion and insertion as possible operations, too. But if you do not, xor is a good trick.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^2: Tips on how to perform this regex query by choroba
in thread Tips on how to perform this regex query by Anonymous Monk

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