4-String Banjo Chord Chart and Tabs in Gbb Tuning

Solb°, Solbmb5, Solbmo5, Solb dim, Solb Diminished
Notes: Sol♭, Si♭♭, Re♭♭
2,2,1,4 (2314)
x,5,7,7 (x123)
2,2,1,x (231x)