The following pictures are by John Savard. See his introduction to cryptography at : http://fn2.freenet.edmonton.ab.ca/~jsavard/jscrypt.html The Hebern Machine : [1]
Source: https://ascii.co.uk/art/cryptography
[3] ___ ___ '-. _ ___ '-. \ _ o\_____ ___ '-. \ |______ _ \ | ___ '-. \ | _/\ ...
/ / // --- / / --- / / --- / / --- / / --- // / / / / // /O/ / / /L/ / / /R/ / / /S/ / / /X/ // / / / / // --- / / --- / / --- / ...
/ _ \ \ ." ". / ___ / \ ...
__/\__ `==/\==` ____________/__\____________ /____________________________\ __||__||__/.--.\__||__||__ /__|___|___( >< )___|___|__\ _/`--`\_ ...
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Cloud: . |\ . . | \|\ _____|\| \ \_ '-._ ,-'-. '.______ / //_ _\ _.-;' /,'/ o : o | .-' /':'|\ _ /,' _\|_'._.'___...
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diddled by Andy C Yu: ,-----. ( MOOH! ) `----y' (--./) /..)< (o o ,\ ___ `--'\(\_____/ \-._ \`---' . )-.\ ) \ < )) | >--( .) / ( ) ...
___ ___ ||| | | ||| _ |||#| |#||| _ \_`----;| |/ ...