7-String Guitar Chord Chart and Tabs in Alex Tuning

SibmM13, Sib-M13, Sib minmaj13
Notes: Si♭, Re♭, Fa, La, Do, Mi♭, Sol
10,11,8,8,8,10,8 (2411131)
8,11,10,8,8,10,8 (1421131)
10,8,8,11,8,10,8 (2114131)
8,8,10,11,8,10,8 (1124131)