C3123121111331312121111331333133313331333121333133313331322233121221   >>    C312312111133131212111133133313331333133312133313331333132223312122   <<    C3123121111331312121111331333133313331333121333133313331322233121223   >>      C3123121111331312121111331333133313331333121333133313331322233121222   >>