C11112331312111112111133133313331333132323213311331323133313331333231211   >>    C1111233131211111211113313331333133313232321331133132313331333133323121   <<    C11112331312111112111133133313331333132323213311331323133313331333231213   >>      C11112331312111112111133133313331333132323213311331323133313331333231212   >>