C3123121111331312121111331333133313331333121333131133131133133313232211233211   >>    C312312111133131212111133133313331333133312133313113313113313331323221123321   <<    C3123121111331312121111331333133313331333121333131133131133133313232211233213   >>      C3123121111331312121111331333133313331333121333131133131133133313232211233212   >>