4-String Banjo Chord Chart and Tabs in Gbb Tuning

Mim7, Mi-7, Mi min7
Notes: Mi, Sol, Si, Ré
0,0,0,0 (....)
0,4,3,5 (.213)
0,7,0,5 (.2.1)
0,4,8,0 (.12.)
0,7,8,9 (.123)