7-String Guitar Chord Chart and Tabs in fake 8 string Tuning

AbmM13, Ab-M13, Ab minmaj13
Notes: A♭, C♭, E♭, G, B♭, D♭, F
4,8,6,4,5,4,4 (1431211)
4,4,6,8,5,4,4 (1134211)