C111123313331323113313331333133313121111331322211121111133311211311   >>    C11112331333132311331333133313331312111133132221112111113331121131   <<    C111123313331323113313331333133313121111331322211121111133311211313   >>      C111123313331323113313331333133313121111331322211121111133311211312   >>