public void Test()
{
Level1 L1 = new Level1();
Level2 L2 = new Level2();
Level3 L3 = new Level3();
Level4A L4A = new Level4A();
Level4B L4B = new Level4B();
Console.WriteLine("TEST APPLICATION");
Console.WriteLine("\nTESTING Level1");
L1.Method1();
Console.WriteLine("\nTESTING Level2");
L2.Method1();
L2.Method2();
Console.WriteLine("\nTESTING Level3");
L3.Method1();
L3.Method2();
L3.Method3();
Console.WriteLine("\nTESTING Level4A");
L4A.Method1();
L4A.Method2();
L4A.Method3();
Console.WriteLine("\nTESTING Level4B");
L4B.Method1();
L4B.Method2();
L4B.Method3();
Pause();
}