About the generation of similar words

[Bluetoes101]

I believe that it is indeed the most common word by itself, in all Herbal pages (A and B) as well as in the Starred Parags secton.  In fact is one of few words that has about the same frequency of occurrence in both Herbal-A and Herbal-B:

This image is interesting in regards to "aiin", for the most part we see the most frequent words being shorter except for words containing "aiin".
Obviously language isn't just statistics and I'm sure languages across the world vary and depends on topic (and a million other factors), however I can't think of any English 1 or 2 letter words that are less common than a 5 letter word of any sort, probably 4 too, 3 probably has "the" etc

.. but anyway, the point I was (badly) arriving at, is I suppose this would support the idea that "aiin" (and maybe "ain") are meant to be less letters than EVA maps them to. It's not a new suggestion and I think many people think that, but just this image shows why that might be the case quite well I thought.