C111123313121111121111331333133313331323232133313331333133313123233123311   >>    C11112331312111112111133133313331333132323213331333133313331312323312331   <<    C111123313121111121111331333133313331323232133313331333133313123233123313   >>      C111123313121111121111331333133313331323232133313331333133313123233123312   >>