C312312111133131212111133133313231333133313331333133112331311331323211211   >>    C31231211113313121211113313331323133313331333133313311233131133132321121   <<    C312312111133131212111133133313231333133313331333133112331311331323211213   >>      C312312111133131212111133133313231333133313331333133112331311331323211212   >>