S 0 k 1

S 0 k 1S 0 k 1S 0 k 1S 0 k 1S 0 k 1S 0 k 1
S 0 k 1S 0 k 1S 0 k 1S 0 k 1S 0 k 1S 0 k 1
S 0 k 1S 0 k 1S 0 k 1S 0 k 1