Month names collection / metastudy

[RadioFM]

What stops me from doing this, is that the sequence as a whole is nonstandard. Once you start allowing that yong = jong = joing =... , you might do the same for different month names as well. Maybe "augst" is a misspelling of "august" and so on...

Isn't y=i=j a safe -ish assumption here? As you said, in some Romance languages y and i are sometimes interchangeable (may, mai). I can picture yong/yollet and iong/iollet being two valid spellings of the same word (same pronunciation), with the stylistic preference of elongating i into j in word-boundary positions if space allows it. A scribe could have the liberty of choosing between the so-called "greek i" (y) and "latin i" (i, j) as they please, both characters sharing same phonetic values.