L 2 r

L 2 rL 2 rL 2 rL 2 r
L 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 r
L 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 r
L 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 r
L 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 rL 2 r