Reply To: Who wants to see a magic trick?

[madness]

The way you are writing your tableaux is a handy way for encrypting and decrypting, where you can
see the keywords. But I think of quagmires as periodic substitution ciphers. Each substitution
has a key that is a scrambled alphabet, and it takes the straight alphabet as its input.

If you don’t try to think of it this way, you are going to miss out on some beautiful math(s).