Which plaintext languages to try?

[oshfdk]

If there is a simple way to encrypt/code double consonants: why was there never any valid deciphering/decoding of them in the last 500 years? And we have computers meanwhile...

This is a very good question. However, this reasoning can be applied to almost any hypothesis, except the hoax/meaningless scribbles kind. How come it hasn't been decoded/read/translated/attributed, etc.

At this point, we meet again the "magic cipher" and have to wait for the wonder of finding a "key" somewhere.

For some reason your comments feel as if my tinkering with ciphers somehow hinders your investigation of Crimea and unknown languages. You find my approach flawed, I'm not yet convinced of yours, and I see no problem with this. It's not like we have to fight for funding or something