static void Main(string[] args)
{
Class1 class1 = new Class1();
class1.Print();
Class2 class2 = new Class2();
class2.Print();
Class3 class3 = new Class3();
class3.Print();
Class4 class4 = new Class4();
class4.Print();
Class5 class5 = new Class5();
class5.Print();
Console.WriteLine("Hello World!");
}