C11112331312111112111133133313331333133313123313331333221211111133223331   >>    C1111233131211111211113313331333133313331312331333133322121111113322333   <<    C11112331312111112111133133313331333133313123313331333221211111133223333   >>      C11112331312111112111133133313331333133313123313331333221211111133223332   >>