4-String Banjo Chord Chart and Tabs in Gbb Tuning

Si#b5, Si#Mb5, Si#Δ-5
Notes: Si♯, Réx, Fa♯
8,5,5,4 (4231)
8,9,7,10 (2314)
8,9,7,x (231x)
8,x,5,4 (3x21)