4-String Banjo Chord Chart and Tabs in Gbb Tuning

Sib+M7, Sib+Δ, SibM7♯5, SibM7+5, SibΔ♯5, SibΔ+5, Sib augmaj7
Notes: Si♭, Ré, Fa♯, La
6,7,7,7 (1234)
6,2,3,4 (4123)