7-String Guitar Chord Chart and Tabs in Alex Tuning

Si#+7b9, Si#7♯5b9, Si#7+5b9
Notes: Si♯, Rex, Fax♯, La♯, Do♯
x,x,11,10,9,11,9 (xx32141)
x,10,11,x,9,11,9 (x23x141)
11,10,x,x,9,11,9 (32xx141)
11,x,x,10,9,11,9 (3xx2141)