import java.util.*;

public class TestLinkedHashSet {
  public static void main(String[] args) {
    // Create a linked hash set
    Set<String> set = new LinkedHashSet<>();
    
    // Add strings to the set
    set.add("London");
    set.add("Paris");
    set.add("New York");
    set.add("San Francisco");
    set.add("Beijing");
    set.add("New York");

    System.out.println(set);

    // Display the elements in the hash set
    for (String element: set)
      System.out.print(element.toLowerCase() + " ");
  }
}