C11112331312111112111133133313331333132323133313331333133313113311113121   >>    C1111233131211111211113313331333133313232313331333133313331311331111312   <<    C11112331312111112111133133313331333132323133313331333133313113311113123   >>      C11112331312111112111133133313331333132323133313331333133313113311113122   >>