C111123313331323113313331323133313331311331311331333133112213123221   >>    C11112331333132311331333132313331333131133131133133313311221312322   <<    C111123313331323113313331323133313331311331311331333133112213123223   >>      C111123313331323113313331323133313331311331311331333133112213123222   >>