R n c

R n cR n cR n cR n cR n cR n c
R n cR n cR n cR n cR n cR n c
R n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n cR n c