C3123121111331312121111331333133313331333121333131133131133133313233232131   >>    C312312111133131212111133133313331333133312133313113313113313331323323213   <<    C3123121111331312121111331333133313331333121333131133131133133313233232133   >>      C3123121111331312121111331333133313331333121333131133131133133313233232132   >>