C312312111133131212111133133313331333133312133313331333133313121111331323233221   >>    C31231211113313121211113313331333133313331213331333133313331312111133132323322   <<    C312312111133131212111133133313331333133312133313331333133313121111331323233223   >>      C312312111133131212111133133313331333133312133313331333133313121111331323233222   >>