4-String Banjo Chord Chart and Tabs in Standard Tuning

GbM7b5, GbMa7b5, Gbj7b5, GbΔ7b5, GbΔb5, Gb maj7b5
Notes: G♭, B♭, D♭♭, F
6,3,3,3 (2111)
6,5,8,8 (2134)