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Pattern Words


Webster's Third New International Dictionary (NI3) defines pattern-word as, "(in) cryptology: a plaintext idiomorph". The same source defines idiomorph as, "a pattern of repeated letters in cryptography". Thus to a cryptanalyst any word with one or more repeated letters is a pattern-word. PROPER, STATE and MUUMUU are pattern-words, whereas THING, WORD and UNCOPYRIGHTABLE are not. In a simple substitution, monoalphabetic cryptogram, pattern-words can provide a method of quick solution where the cyrptogram is of the easy or medium-difficult variety. Thus a long word ending with the pattern -ABCC is very likely to end in NESS. The ending -DBBC is often -ALLY.