C111123313331323113313331333133313121111133112121111331311331322333121221   >>    C11112331333132311331333133313331312111113311212111133131133132233312122   <<    C111123313331323113313331333133313121111133112121111331311331322333121223   >>      C111123313331323113313331333133313121111133112121111331311331322333121222   >>