public class UseList
{
	public static void main (String[] args)
	{
		List list = new List();

		list.insertAtFront (5);
		list.print();
		list.insertAtFront (3);
		list.print();
		list.insertAtBack (9);
		list.print();
		list.insertAtBack (2);
		list.print();

		list.removeFromFront ();
		list.print();
		list.removeFromFront ();
		list.print();
		list.removeFromBack ();
		list.print();
		list.removeFromBack ();
		list.print();
	}
}