C312312111133131212111133133313331333133312133313231333133323133313331323232311   >>    C31231211113313121211113313331333133313331213331323133313332313331333132323231   <<    C312312111133131212111133133313331333133312133313231333133323133313331323232313   >>      C312312111133131212111133133313331333133312133313231333133323133313331323232312   >>