You might be interested to know that three cubes can be used to make calendar cubes that show the first three letters of the month's names. Again, some trickery is required.
Hmmm. Seeing as we appear to need 19 letters by my count, there's obviously some trickery needed like M = E or something.
Or maybe it's all lowercase, and you use the same character for 'p' and 'd'
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