C111123313331323113313331333132313331311331312111133131113223231   >>    C11112331333132311331333133313231333131133131211113313111322323   <<    C111123313331323113313331333132313331311331312111133131113223233   >>      C111123313331323113313331333132313331311331312111133131113223232   >>