C3123121111331312121111331333133313331333121333131133133313113313232233211   >>    C312312111133131212111133133313331333133312133313113313331311331323223321   <<    C3123121111331312121111331333133313331333121333131133133313113313232233213   >>      C3123121111331312121111331333133313331333121333131133133313113313232233212   >>