C31231211111133131211113313331323133313331311233132313232233221   >>    C3123121111113313121111331333132313331333131123313231323223322   <<    C31231211111133131211113313331323133313331311233132313232233223   >>      C31231211111133131211113313331323133313331311233132313232233222   >>