两个乒乓球队进行比赛，各出3人。甲队为a,b,c三人，乙队为x,y,z三人，已抽签决定比赛名单。有人向队员打听比赛的名单，a说他不和x比，c说他不和x,z比，请编程序找出三队赛手的名单。-Two table tennis team competition, each person 3. A team for a, b, c three B teams for the x, y, z three, has decided to match the list of drawing. It was a