7-String Guitar Chord Chart and Tabs in Drop a Tuning

СиbmM13, Сиb-M13, Сиb minmaj13
Notes: Си♭, Ре♭, Фа, Ля, До, Ми♭, Соль
10,9,8,8,8,10,8 (3211141)
8,9,10,8,8,10,8 (1231141)
10,8,8,8,8,10,9 (3111142)
8,8,10,8,8,10,9 (1131142)