R 1 c

R 1 cR 1 cR 1 cR 1 cR 1 cR 1 c
R 1 cR 1 cR 1 cR 1 cR 1 cR 1 c
R 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 cR 1 c