public static void main(String[] args) {
		String[] team1 = {"a","b","c"};
		String[] team2 = {"x","y","z"};
		for(int i=0; i<3; i++){
			for(int j=0; j<3; j++){
				if(i == 0 && j == 0)//a说他不和x比
					continue;
				else if(i == 2 && (j == 0 || j == 2))
					continue;//c说他不和x,z比
				else{
					System.out.println(team1[i] + "<-->" + team2[j]);
				}
			}
		}
	}