The issue was mentioned on a different node. You specify an alphabet, but your data contains characters not contained in that alphabet. You can either filter the characters that you are not checking ('-', '.'), add them to the alphabet, or remove them from the data in your list of items.

--MidLifeXis

In reply to Re^4: Another word puzzle with too many permutations by MidLifeXis
in thread Another word puzzle with too many permutations by sarchasm

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