C11112331312111112111133133313331333133313123313331321123221212111   >>    C1111233131211111211113313331333133313331312331333132112322121211   <<    C11112331312111112111133133313331333133313123313331321123221212113   >>      C11112331312111112111133133313331333133313123313331321123221212112   >>