ellipse(405,400,90,90);
line(400,350,400,300);
ellipse(200,400,90,90);
line(200,350,200,300);
ellipse(300,300,90,90);
line(300,250,300,200);
line(150,100,450,100);
triangle(150,100,250,100,200,155);
triangle(250,100,350,100,300,155);
triangle(350,100,450,100,400,155);
line(50,400,200,550);
line(600,400,450,550);