C11112331312111112111133133313331333133313123313331311331333133332213331223311   >>    C1111233131211111211113313331333133313331312331333131133133313333221333122331   <<    C11112331312111112111133133313331333133313123313331311331333133332213331223313   >>      C11112331312111112111133133313331333133313123313331311331333133332213331223312   >>