[Text] word starting [q] must have a valid counterpart word starting [o]

[-JKP-]

...
Of course, let's not get hung up on a direct correspondence : q ain't necessarily q. 

Personally, I don't think it is q, but q is the EVA-correspondence, so I usually call it q for EVA-convenience.

But if q+o Appears in  say, 90% of cases it's an indication that something is going on. If Voynich ese glyphs are letters, then we have a bigraph. If they aren't, we still have a syllable.

I totally agree that something is going on, but I think there's a difference between qo + token and q + token that usually starts with "o" and I'm leaning toward it being the latter.

Hey, this dates from the 15th century  You think they knew about loan words then?

They used loan-words more than we do. They were constantly inserting Greek, Latin, and Hebrew into their text.