glyph [d] as a substitute for [p] and [f]

[ReneZ]

So I looked in more detail. First of all I should make a correction to my previous post. The numbers 191 and 151 I presented are for the words that have at least one of 'f/p' plus at least one of 'k/t'.

To take it from there, it was a manual effort. Perhaps someone knows a Unix command to 'grep' for words that have at least one 'f/p' plus at least one 'f/p/k/t' (awk??) but I suspect it requires Perl, which I mostly forgot.

Anyway, looking at the case where comma spaces are interpreted as word spaces, I find 179 entries for:
at least one 'f/k' plus at least one 'f/k/p/t'.
These can be split into four groups:
1. f/p occurs before k/t.    (There are 90 of them)
2. f/p occurs before f/p.    (There are 28 of them)
3. k/t occurs before f/p.    (There are 58 of them)
4. There are 3 or more gallows  (There are 3 of them).

Just for fun, here are the three words in the fourth category:
  tdokchcfhy (f52r)
  potchokor  (f76r1)
  psholpchcfhdy (f84r)
All three are at a paragraph start, so the first character might not be a text character.

In general it can be said that all words are rather untypical Voynich words, even though they usually have some recognisable pattern elements.

The words analysed by Geoffrey are types 2 and 3, and rather surprisingly I arrive at exactly the same number: 86 of them.

However, the vast majority of them do not lead to a recognisable Voynich word if the f/p or cfh/cph are replaced by a d.

Just to cite a few examples:
ypchedpy (f41r)  would result in two consecutive 'd's. This word is a case where the 'p' could be nulls.
tshodpy (f44r)
(2 more words with dp)