C312312111133131212111133133313331333133312133313331333132233232111   >>    C31231211113313121211113313331333133313331213331333133313223323211   <<    C312312111133131212111133133313331333133312133313331333132233232113   >>      C312312111133131212111133133313331333133312133313331333132233232112   >>