How to recombine glyphs to increase character entropy?

[Ruby Novacna]

The bigram entropy using these alphabets is higher than for Eva, but still much lower than for plain texts in most of the interesting languages.

Thanks, Rene!
In this case another question: were the texts compared the same subjects as those, of course supposed, of Voynich?
A pharmaceutical recipe or a lab protocol would, by definition, have a restricted lexicon, in my opinion.