C11112331312111112111133133313331333133313331333133313331333131211332232311   >>    C1111233131211111211113313331333133313331333133313331333133313121133223231   <<    C11112331312111112111133133313331333133313331333133313331333131211332232313   >>      C11112331312111112111133133313331333133313331333133313331333131211332232312   >>