C11112331312111112111133133313331333132323213311331323133313331311223221211   >>    C1111233131211111211113313331333133313232321331133132313331333131122322121   <<    C11112331312111112111133133313331333132323213311331323133313331311223221213   >>      C11112331312111112111133133313331333132323213311331323133313331311223221212   >>