C11112331312111112111133133313331333132213221211113313221311331333211   >>    C1111233131211111211113313331333133313221322121111331322131133133321   <<    C11112331312111112111133133313331333132213221211113313221311331333213   >>      C11112331312111112111133133313331333132213221211113313221311331333212   >>