The Voynich Ninja

In the current, Voynich language is understood like Arabic language or surrounding language?

and about characters..

I think..

[attachment=7287] ＝ a       
[attachment=7288] ＝ ch
[attachment=7289] ＝ yy
[attachment=7290] ＝ z

are these right?

I have a wish.
I want to know correspondence alphabet and all characters of VM.
do you know a site written about them?