Voynichese is a numeric cipher?

[ololololo]

123 of the 947 Voynich labels begin with EVA “ot,” which is about 13.0%. The count included labels with more than one character.

Does that mean 13% of the words are supposed to "F"? 

No one knows. Maybe it works for all words. Maybe only for Currier B. Maybe there are some hidden rules here. But there are still some coincidences.

---

An idea for a cipher with a kind of numeric component.
Taking the scheme of prefix - core - sufix.
The core represents a plain letter, and the set of sufix-prefix around the core moves the letter
certain number of positions, in the style of a caesar cipher.
This will reduce the field, 1 core per plain letter is enough, and the number of sets of prefix-sufix doesnt 
need to be high to have a high number of options to encode every letter.

Hmm, this is quite interesting. But can Core tokens really be encrypted letters? Or rather, can we try to come up with some kind of cipher alphabet?
Overall, you can imagine something like a Polybius square. Prefix shifts the letter horizontally, Suffix — vertically.