4-String Banjo Chord Chart and Tabs in Gbb Tuning

Mi+7, Mi7♯5, Mi7+5, Mi aug7
Notes: Mi, Sol♯, Si♯, Ré
0,1,1,0 (.12.)
0,5,3,6 (.213)
0,5,9,0 (.12.)
0,7,9,10 (.123)