C3123121111331312121111331333133313331333121333133313331323211211   >>    C312312111133131212111133133313331333133312133313331333132321121   <<    C3123121111331312121111331333133313331333121333133313331323211213   >>      C3123121111331312121111331333133313331333121333133313331323211212   >>