C31231211113313121211113313331333133313331213331333133312111113223313131   >>    C3123121111331312121111331333133313331333121333133313331211111322331313   <<    C31231211113313121211113313331333133313331213331333133312111113223313133   >>      C31231211113313121211113313331333133313331213331333133312111113223313132   >>