import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class Main {
public static void main(String[] args) {
String[] peoples = {"A","B","C","D","E","F"};
List<String> names = Arrays.asList(peoples);
Collections.shuffle(names);
for (String name : names) {
System.out.print(name + " ");
}
}
}