The vowel exchange "a" to "o"

[Petrasti]

I think I somewhat understand the structure you see in Voynich and also the tendency of what we call inflectional language. However, the exchange from a and o unfortunately does not behave like in your Arabic example.  However, the trend with prefixes and suffixes is also recognisable to me. Have you already found words that might make an Arabic origin more explainable? The drawings are not exactly typically Arabic or oriental. Whether qo could actually stand for "al" I can't believe at the moment, for the following reason: The word qo appears too rarely in the plant descriptions if you assume that ar/az or perhaps just ‘a’ stand for the same article, the frequency increases. However, the following problem arises, but also a possible explanation for a system that repeats again and again.

Let's assume that the word qo is a prefix maybe "al"
Let's take a less frequently occurring word to get fewer hits
qoeees  
if qo is the article we find eees as the baseword stem (and this is correct because we find it 9 times in the manuscript)
we find the baseword stem eees also with the following prefixes:
oeees, seees, cheees, dyeees, oteees, c+heees, soteees, yc+heees, soeees, choeees,
lkeees, qokeees, ctheees, qoteees, otoreees

the word otoreees is for sure the connetion between o tor eees, we can delete it from the list
if we assume that qo could be the article then we have to find a solution for all other prefixes or we assume that all other words have nothing to do with the baseword stem eees. Which I think is impossible, as the system of prefixes repeats itself over and over again. 
and we can also check and see that they are the same words, since none of the words were again written with qo at the beginning in the manuscript. 
oeees but not as qooeees, seees but not as qoseees, cheees but not as qocheees ...
But what we see here is that the word qo is a perfect marker to identify base word stems. (with some exceptions)

above we find also two letters in front of the basewort stem as for example oteees in the manuscript. What is fantastic here is that we can prove that the letter t also serves as a prefix and does not always introduce an independent word. This proof is provided as follows:
we find the baseword eees an oteees but never teees. So we can see that the word teees ist no a seperat word with prefix o it is a prefix o and t with the baseword stem eees.
However, these examples show that the words mutate in the initial letter or at least it shows the special structure of Voynich in the initial letter.