MAKE A MEME View Large Image AD-cycle.svg en A 4-cycle formed from the first and fourth letters of four Enigma message indicators as used before 1938 by the German military own 2007-01-21 myself Cryptography diagrams
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Keywords: AD-cycle.svg en A 4-cycle formed from the first and fourth letters of four Enigma message indicators as used before 1938 by the German military own 2007-01-21 myself Cryptography diagrams
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