sh_ and ch_ compose the same words

[nablator]

To illustrate the fact that varying page length is dominating these results, lets look at the hypothetical case that the Voynich manuscript text were composed by picking words arbitrarily from a hat. In this case:
- more total words on a page -> more ch words on a page
- more total words on a page -> more sh words on a page

True. To discount this linear relation (on average) between the two, the number of words of a certain type on a page can be compared to the expected number of words (from the global frequency ratio and the total number of words on the page) to see whether there are more or less words of this type than expected on the page. Then it does not look like an excess (+, horizontally) or shortage (- horizontally) of ch_ words is correlated to an excess (+, vertically) or shortage (-, vertically) of sh_ words.

   

I'm sure the same statistic can be done on words starting with any two common letters, on pages of any book and the plot will look as randomly scattered as this one.