4-String Banjo Chord Chart and Tabs in Gbb Tuning

SiM7, SiMa7, Sij7, SiΔ7, SiΔ, Si maj7
Notes: Si, Ré♯, Fa♯, La♯
7,8,7,8 (1213)
7,3,4,4 (4123)
11,11,0,8 (23.1)