Sure. I can use a simple set of linux sed commands to make the substitutions on Voynich and re-run the scenarios above. Will let you know how it goes.
Note that the letters in all samples have been shifted to lower case, so what do you want to do about capital C in scenario 1 and 3?
Note that the letters in all samples have been shifted to lower case, so what do you want to do about capital C in scenario 1 and 3?

