4-String Banjo Chord Chart and Tabs in Gbb Tuning

MiM7, MiMa7, Mij7, MiΔ7, MiΔ, Mi maj7
Notes: Mi, Sol♯, Si, Re♯
0,1,0,1 (.1.2)
0,4,4,6 (.123)
0,8,0,6 (.2.1)
0,8,9,9 (.123)