Someone asked me how to get 6 with 2 2 2 using any mathematical operations ( +,-,*,/, ^2, ^3..., sqaure root, cube root,...)

For 2 2 2, 2+2+2=6

For 3 3 3, 3*3 -3=6 ( or 3+3 * (3^0))

For 4 4 4, square root 4 + square root 4 + square root 4=6

For 5 5 5, 5+ (5/5)=6

For 7 7 7, 7- (7/7)=6

For 8 8 8, cube root 8 + cube root 8 + cube root 8=6

For 9 9 9, (9+9)/(square root 9) OR square root 9 *square root 9-square root 9

Now am stuck on the last part, that is 1 1 1 to get 6