R c 1 4

R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4
R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4
R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4R c 1 4