// Import the HashSet class
import java.util.HashSet;
public class Main {
public static void main(String[] args) {
HashSet<string> cars = new HashSet<string>();
cars.add("Volvo");
cars.add("BMW");
cars.add("Ford");
cars.add("BMW");
cars.add("Mazda");
for (String i : cars) {
System.out.println(i);
}
}
}
</string></string>