C312312111133131212111133133313331333133312133313231333131333132233223332331   >>    C31231211113313121211113313331333133313331213331323133313133313223322333233   <<    C312312111133131212111133133313331333133312133313231333131333132233223332333   >>      C312312111133131212111133133313331333133312133313231333131333132233223332332   >>