Engineering your own voynich

[oshfdk]

Byatan's key has a lot of overlaps and repeats, which is perhaps why it stunted us for so long. We needed to be solving for polyphones too.
However, @nablator your breakdown was very good, and even got the two four character keys.

Congratulations! How practical is it for reading if used as an actual cipher? Is it always simple to determine the boundaries between the positions?

Could you share some details of how you managed to crack it?

This is also optimistic news for those of us who think they know how the Voynich manuscript was created (be it a specific cipher, exotic language or some other method), but so far can't come up with a solution. Sometimes you just need to keep digging.