Voynich through Phonetic Irish

[Doireannjane]

I can’t properly read parts of the graph. Why is there a sh? This is a little complicated because the three dialects are super different, I usually find myself hearing it as either Munster or Connacht because of what has and what has not been retained sound wise and character wise.

B in Modern Irish is usually in combination with other characters (mbd in Irish) to make other sounds that are covered already by bh or VUH, for example