The Naibbe cipher

[Mauro]

good morgning, a quick comment on the regularity of Voynich. all words that have a gallow sign integrated into the letter cth cph ckh cph also exist withouth the gallow sing in the middle

This is not strictly true. I just made some spot checks, but for instance (transcription RF1a-n) there are 3 ackhy and 6 acthy, but no achy. There are 3 chckh and 3 chcth, but no chch.
 

all words with an e, ee, eee, eeee in the word (and always and only after the first letter of a word) exist withouth the e in the manuscript. I question wether these theory of prefixes and suffixes could be used therefore? 

e is rather rare as 2nd letter in a word, so I'm not sure how much this observation is statistically supported. And there are exceptions too (spot check): there is one seeedy but no sdy, ther are 2 qear and 1 qeear but no qar