Interesting result for f3r with an ngram Genetic Algorithm

[MarcoP]

That's very interesting, Marco. Of course, if EVA-d is a null, then EVA-aiin would reduplicate more often. 

Hi Julian,
I think that reduplication in Voyinchese looks like reduplication in other languages. One of the peculiarities of Voynichese, with respect to Latin and the other European languages I know something of, is that reduplication is much more frequent. I believe this is one of the elements that suggest that the language is not one of the obvious ones (but reduplication could in principle be a feature of the text and not of the language).
I think that the simpler explanation for reduplication is that it really is what it seems: multiple consecutive occurrences of the same word. This typically has a semantic value. I am not aware of useful alternatives to this simple explanation: the alternatives I am aware of are of the kind "it's gibberish" and I don't find them interesting.

In the case of daiin and aiin, the presence and absence of d- objectively correlate with the presence or absence of reduplication. If reduplication is what it appears to be (the meaningful repetition of words), d- seems likely to be meaningful as well.