C31231211113313121211113313331323133313331333133313331121122332211   >>    C3123121111331312121111331333132313331333133313331333112112233221   <<    C31231211113313121211113313331323133313331333133313331121122332213   >>      C31231211113313121211113313331323133313331333133313331121122332212   >>