public static void Run()
{
Base test = new Base();
test.Call();
Base test2 = new Derived();
test2.Call();
Derived test3 = new Derived();
test3.Call();
Base test4 = new Derived2();
test4.Call();
Base test5 = new Derived2();
((Derived2)test5).Call();
Derived2 test6 = new Derived2();
test6.Call();
Derived2 test7 = new Derived2();
((Base)test7).Call();
Derived test8 = new Derived();
((Base)test8).Call();
}