4-String Banjo Chord Chart and Tabs in Whole Step Down Tuning

Fb+7, Fb7♯5, Fb7+5, Fb aug7
Notes: F♭, A♭, C, E♭♭
6,3,0,7 (21.3)
6,3,2,5 (4213)
6,7,8,7 (1243)
6,9,8,5 (2431)