Repetition of letter groups

[ThomasCoon]

Hi all,

I've been looking at different vords, trying to uncover an underlying structure that all or most VMS vords contain. 

I've been wrong in the past and could be wrong now, but I wonder if characters that look alike (all "circle" characters, all gallows characters, all "ch/e" things) have the same function because they seem to appear in the same places. Take a look at the following:

   

There seem to be four groups of characters, and they repeat in a predictable and uniform way:

"Circle" group: o a y ai
"Hook" group: r l n m 
"C" group: c h ch sh e ee eee che ech etc.
"Tall" group: k t p f d s

Can all (or most) vords be reduced to this 4-unit paradigm? Is that the underlying structure of the Voynichese cipher?