Guitar Chord Chart and Tabs in C Standard Tuning

Si6, SiM6, Si maj6
Notes: Si, Re♯, Fa♯, Sol♯
11,10,10,x,11,11 (211x34)
x,10,10,x,11,11 (x11x23)
x,10,10,8,11,x (x2314x)
11,10,10,x,11,x (211x3x)