While your $v/$k order is right, the one gotcha that I put in there was that the alphabet size was arbitrary, and not necessarily 26 characters.. it could be as many as 100, 1000, or more (Well, anything in non-Unicode above 255 makes no sense). So this trick doesn't work here.
Dr. Michael K. Neylon - email@example.com
"You've left the lens cap of your mind on again, Pinky" - The Brain
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