C3123121111331312121111331333133313331333121333133313331333211113313232221   >>    C312312111133131212111133133313331333133312133313331333133321111331323222   <<    C3123121111331312121111331333133313331333121333133313331333211113313232223   >>      C3123121111331312121111331333133313331333121333133313331333211113313232222   >>