C11112331312111112111133133313331333132322121111331311331333133313232222311   >>    C1111233131211111211113313331333133313232212111133131133133313331323222231   <<    C11112331312111112111133133313331333132322121111331311331333133313232222313   >>      C11112331312111112111133133313331333132322121111331311331333133313232222312   >>