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

MibmM13, Mib-M13, Mib minmaj13
Notes: Mi♭, Sol♭, Si♭, Ré, Fa, La♭, Do
3,2,1,1,2,1,1 (4211311)
1,2,1,1,2,3,1 (1211341)
3,1,1,1,2,1,2 (4111213)
1,1,1,1,2,3,2 (1111243)