C312312111133131212111133133313331333133112113313331333131321322123311   >>    C31231211113313121211113313331333133313311211331333133313132132212331   <<    C312312111133131212111133133313331333133112113313331333131321322123313   >>      C312312111133131212111133133313331333133112113313331333131321322123312   >>