void Draw(Graphics g, int x, int y, int w, int h)

{

   g.DrawRectangle(Pens.Black, x, y, w, h);

   g.DrawEllipse(Pens.Black, x, y + h, w, h);

   g.DrawRectangle(Pens.Black, x, y + 2 * h, w, h);

   g.DrawRectangle(Pens.Black, x + w, y + h, w, h);

}