4o

[Botis]

I was looking at an old book called You are not allowed to view links. Register or Login to view., it being an old guide to reading medieval writing styles and abbreviations. 

Something I noticed on You are not allowed to view links. Register or Login to view., is that the way they're writing P looks a lot like voynich 4o.

But this got me thinking -- might it be that 4 and o are always together because it's actually one letter? Are there any examples where 4 is not followed by o?