import java.util.*;
 
public class Test{
	
	public static void main(String[] args){
		Test test = new Test();
		test.test();
		System.exit(0);
	}
	
	public void test(){
		Vector v = new Vector();
		v.add("ben");
		v.add("hugh");
		v.add("matt");
		v.add("peter");
		v.add("jason");
		v.add("lunt ");
		Enumeration e = v.elements();
		Object o;
		for (int i = 0; e.hasMoreElements(); i++) {
			if (i%2 == 0) System.out.print((String)e.nextElement());
			if (i%2 == 1) System.out.println(" " + (String)e.nextElement());
		} 	
	}	
}