C11112331312111112111133133313331333132323213331333133313332111332223121   >>    C1111233131211111211113313331333133313232321333133313331333211133222312   <<    C11112331312111112111133133313331333132323213331333133313332111332223123   >>      C11112331312111112111133133313331333132323213331333133313332111332223122   >>