C11112331312111112111133133313331333133313223313331322333123121   >>    C1111233131211111211113313331333133313331322331333132233312312   <<    C11112331312111112111133133313331333133313223313331322333123123   >>      C11112331312111112111133133313331333133313223313331322333123122   >>