Character-Limited Patterns?

[Davidsch]

In my research i offered about 6 months comparing that possibility that letters can vary or are interchangable.

I tried: 
* any of the letters is a space
* any of the letters is any other letter
* any of the letters is a null-character (but i quickly stopped there because almost no text is left over at some point)

I do not see how i can implement errors/spelling.

ReneZ:  - whatever it is that causes the first word in each line to be different

Hm, that is very difficult. I did not yet dare to go there, but what if a predecessor /codeword determines what will come after that?
ex1.  Chody -> use table A

Something like that ?

Does anyone have more suggestions please do write down !?