4-String Banjo Chord Chart and Tabs in Gbb Tuning

MiM7b5, MiMa7b5, Mij7b5, MiΔ7b5, MiΔb5, Mi maj7b5
Notes: Mi, Sol♯, Si♭, Re♯
0,3,4,6 (.123)
0,8,9,8 (.132)