C111123313331323113313331323133313331311331311331333133112213332211   >>    C11112331333132311331333132313331333131133131133133313311221333221   <<    C111123313331323113313331323133313331311331311331333133112213332213   >>      C111123313331323113313331323133313331311331311331333133112213332212   >>