C11112331312111112111133133313331333133313123313331333131211113322332311   >>    C1111233131211111211113313331333133313331312331333133313121111332233231   <<    C11112331312111112111133133313331333133313123313331333131211113322332313   >>      C11112331312111112111133133313331333133313123313331333131211113322332312   >>