Voynich text as Base20

[Juan_Sali]

Base20 is just more common than >Base20 and with 20 chars there are only 6 chars to ignore.

You can get an alphabet with even less than 20 chars, first assign 1 char to 1 letter, when all chars are assigned do the same with groups of 2 chars along with a way to distinguish when a char form a letter by itself and when it takes part of a group of 2 that conform a letter.