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

SiM13, SiΔ13, Si maj13
Notes: Si, Ré♯, Fa♯, La♯, Do♯, Mi, Sol♯
7,7,6,6,6,6,7 (2311114)
7,6,6,7,6,6,7 (2113114)