How many people penned the main Voynichese text?

[rikforto]

I voted more than two with the big caveat that I am open to the A-cluster and B-cluster hands being one scribe each separated by a significant timespan. I know from personal experience that one's handwriting can change immensely over time---you can see in my notebooks where I learned Japanese and where I learned Korean because both mark a huge shift in my Latin handwriting---and there was a lot of debate about good scripts in early 14th Century Italy. But even then, there might be 3 scribes over 5 hands, it's all very uncertain