4-String Banjo Chord Chart and Tabs in Standard Tuning

Gbmsus2, Gb-sus, Gbminsus
Notes: G♭, A♭, B♭♭
6,2,6,0 (213.)
x,11,7,11 (x213)
6,x,6,0 (1x2.)
6,2,6,x (213x)