"The Currier languages revisited" revisited

[ReneZ]

I have quite a lot of data on this, which I have started to summarise, but this is still far from ready to publish. I can say with confidence that it is not a matter of spelling change. I am also reasonably sure that it can at some point be explained with a few 'rules'. But I haven't found them yet.

What it looks like most to me, is that all frequent A words continue to be used in B, but there is a whole set of new words. This causes a shift in frequencies of these frequent A words of course.