Guitar Chord Chart and Tabs in B Flat Tuning

GbmM7, Gbm#7, Gb-M7, Gb−Δ7, Gb−Δ, Gb minmaj7
Notes: G♭, B♭♭, D♭, F
8,x,7,6,6,6 (3x2111)
7,x,8,6,6,6 (2x3111)