Statement: IF Voynichese does not represent natural language...

[Koen G]

It appears that in every word you can found at least one of these letters from the group [o c a y ].

That's an interesting way of looking at it. One might say that on the surface this is an indication of the vowel-like status of these glyphs? Remove a,e,i,o,u words from Spanish and there's not much left either. So this is surely one of the reasons why Voynichese feels like a language.