C312312111133131212111133133313331333133312133313231333133322131132321   >>    C31231211113313121211113313331333133313331213331323133313332213113232   <<    C312312111133131212111133133313331333133312133313231333133322131132323   >>      C312312111133131212111133133313331333133312133313231333133322131132322   >>