C111123313121111121111331333133313331333133313121111133313331333133311211311211   >>    C11112331312111112111133133313331333133313331312111113331333133313331121131121   <<    C111123313121111121111331333133313331333133313121111133313331333133311211311213   >>      C111123313121111121111331333133313331333133313121111133313331333133311211311212   >>