As mentioned elsewhere, a signature of enigma ciphertext is that a letter can never encode as itself. This gives you some crude form of error checking. The re

As mentioned elsewhere, a signature of enigma ciphertext is that a letter can never encode as itself. This gives you some crude form of error checking. The rest of it as you mentioned makes it difficult to determine, data mining the possible results for common abbreviations from other plaintext could narrow.It down.