C32133223331333131133132212111133133313331311332333233133112221   >>    C3213322333133313113313221211113313331333131133233323313311222   <<    C32133223331333131133132212111133133313331311332333233133112223   >>      C32133223331333131133132212111133133313331311332333233133112222   >>