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

MibM7b5, MibMa7b5, Mibj7b5, MibΔ7b5, MibΔb5, Mib maj7b5
Notes: Mi♭, Sol, Si♭♭, Ré
5,2,2,2 (2111)
5,4,2,0 (321.)
5,9,9,0 (123.)
5,4,7,7 (2134)