 Complete the following phrase:  Van t Schip began his career in the Ajax youth academy. Debuting for the first team 6 December 1981 Ajax-Haarlem 41, he spent the next 11 seasons with the club. During this period he became league champion in 1982, 1983, 1985, and 1990, and cup champion in 1983, 1986 and 1987. He also helped Ajax win the 1987 European Cup Winners Cup and the 