This is the door lock where we are staying and I am irritated every time I have to punch in the code.
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Looks good to me. The letters are following the same pattern as the numbers - Top to bottom, left to right. ‘C’ is likely a Clear button in case you mess up your code. XYZ was chosen instead of ABC since C already has a use.

yup, definitely a weird choice for grouping but also not random


