C3123121111331312121111331333133313331333121333133313332233132213233313123121   >>    C312312111133131212111133133313331333133312133313331333223313221323331312312   <<    C3123121111331312121111331333133313331333121333133313332233132213233313123123   >>      C3123121111331312121111331333133313331333121333133313332233132213233313123122   >>