Guitar Chord Chart and Tabs in A Standard 7 String Tuning

GbM13, GbΔ13, Gb maj13
Notes: G♭, B♭, D♭, F, A♭, C♭, E♭
8,8,6,6,6,6,6 (2311111)
6,8,6,6,6,8,6 (1211131)
8,6,6,6,6,6,8 (2111113)
6,6,6,6,6,8,8 (1111123)