C11112331312111112111133133313331333132323213311331323133313331333132213231211   >>    C1111233131211111211113313331333133313232321331133132313331333133313221323121   <<    C11112331312111112111133133313331333132323213311331323133313331333132213231213   >>      C11112331312111112111133133313331333132323213311331323133313331333132213231212   >>