C11112331312111112111133133313331333132323213311331323133313331312111112211111   >>    C1111233131211111211113313331333133313232321331133132313331333131211111221111   <<    C11112331312111112111133133313331333132323213311331323133313331312111112211113   >>      C11112331312111112111133133313331333132323213311331323133313331312111112211112   >>