S x 18

S x 18S x 18S x 18S x 18S x 18S x 18
S x 18S x 18S x 18S x 18S x 18S x 18
S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18S x 18