C3123121111331312121111331333132313331333133313221211113313331121233121   >>    C312312111133131212111133133313231333133313331322121111331333112123312   <<    C3123121111331312121111331333132313331333133313221211113313331121233123   >>      C3123121111331312121111331333132313331333133313221211113313331121233122   >>