7-String Guitar Chord Chart and Tabs in b standard Tuning

DobM13, DobΔ13, Dob maj13
Notes: Do♭, Mi♭, Sol♭, Si♭, Ré♭, Fa♭, La♭
11,11,9,9,10,9,9 (3411211)
9,11,9,9,10,11,9 (1311241)
11,9,9,9,10,9,11 (3111214)
9,9,9,9,10,11,11 (1111234)