Guitar Chord Chart and Tabs in C open Tuning

Si2, Siadd2, Siadd9
Notes: Si, Ré♯, Fa♯, Do♯
x,4,3,2,1,x (x4321x)
x,4,1,2,3,x (x4123x)
x,4,3,x,1,2 (x43x12)
x,4,1,x,3,2 (x41x32)
11,11,x,11,x,9 (23x4x1)
11,11,x,9,x,11 (23x1x4)