C11112331312111112111133133313331333132323213331333133313331321123221211   >>    C1111233131211111211113313331333133313232321333133313331333132112322121   <<    C11112331312111112111133133313331333132323213331333133313331321123221213   >>      C11112331312111112111133133313331333132323213331333133313331321123221212   >>