C11112331312111112111133133313331333133313123313331333221211113313113311   >>    C1111233131211111211113313331333133313331312331333133322121111331311331   <<    C11112331312111112111133133313331333133313123313331333221211113313113313   >>      C11112331312111112111133133313331333133313123313331333221211113313113312   >>