C111123313121111121111331333133313331321123121111113313232123311   >>    C11112331312111112111133133313331333132112312111111331323212331   <<    C111123313121111121111331333133313331321123121111113313232123313   >>      C111123313121111121111331333133313331321123121111113313232123312   >>