I had been stuck with my Mark I version of the stroke theory for quite some time and thought of it as a nice, but wrong idea.
Enter Robert Firth:
But then I came across Robert Firth’s Voynich notes, especially his #24. (Which was, BTW, the last one he posted… apparently, he had come too close to the truth and The Powers That Be(TM) silenced him.)
In the noteworthy note #24 Robert had attempted to break up the Voynich words into grammatical constituents. But as opposed to most others, he didn’t employ a “prefix — stem — suffix” system, but only two classes of letter groups which he termed “odd” and “even” and which supposedly alternated. (Ie, the odd groups made up word starts, while the even groups made up the word endings.)
By using roughly 20 odd and even groups each, Robert was able to reproduce the majority of Currier A words in the VM. (He didn’t achieve a complete match; nobody does. But he apparently could reproduce virtually all of the more frequent words.) Some of the ciphertext letters were unique to odd or even groups, while some occured in both. The groups varied in length between one and five EVA letters.
In EVA, the groups looked like this:
s_______dy___
qo______dal__
qok_____daiin
qop_____al___
d_______am___
yk______aiin_
yt______ain__
k_______ar___
o_______ey___
ok______eey__
ot______eol__
t_______ol___
cth_____oiin_
ch______or___
chk_____chy__
cht_____chey_
chcth___cho__
chcph___chol_
chckh___chor_
cph_____shy__
ckh_____y____
sh______
sho_____
Thoughts about the Voynich Manuscript 