Ruby's Greek Thread

[farmerjohn]

oin, oiin, oiiin are the main reason which made me look for another explanation

And what is this explanation? 
Have you published your results?

At the moment I explore the idea that oiin is vī and v and u are not distinguished. This would allow to match more words. In particular word oiin thus matches avī or ovī (I favor the idea that voynichese is sort of abjadic).