C111123313121111121111331333133313331333133313331333133313331311211123311   >>    C11112331312111112111133133313331333133313331333133313331333131121112331   <<    C111123313121111121111331333133313331333133313331333133313331311211123313   >>      C111123313121111121111331333133313331333133313331333133313331311211123312   >>