Complete the code

function start(){
var a = new Circle(100);
a.setPosition(100,100);
add(a);

// add in the 2 squares
shapes 1 function start(){
// draw the flat ground
var ground = new Rectangle(400,20);
ground.setPosition(0,450);
add(ground);

// add a simple tree
var trunk = new Rectangle(20,200);
trunk.setPosition(100,250);
add(trunk);
var branches = new Circle(75);
branches.setPosition(110,210);
add(branches);

// add a second tree
var trunk2 = new Rectangle(____,____);
trunk2.setPosition(____,____);
add(trunk2);
var branches2 = new Circle(____);
branches2.setPosition(____,____);
add(branches2);

}
shapes2