static void Main(string[] args)
{
var list = new List();
list.Insert("ljj");
list.Insert("pop");
list.Insert("op");
list.InsertIndex("hk", 1);
list.PrintList();
list.DeleteElement("ljj");
list.DeleteElement("l");
list.DeleteElementIndex(1);
list.Insert("uy");
list.DeleteElement("hk");
list.PrintList();
list.DeleteElementIndex(2);
list.PrintList();
}