let screen = document.getElementById("canvas00");
let pen = screen.getContext("2d");
pen.fillStyle = "green";
pen.fillRect(0,0,600,400);
pen.fillStyle="black";
pen.fillRect(120,90,120,90);
pen.fillStyle="black";
pen.fillRect(360,90,120,90);
pen.fillStyle="black";
pen.fillRect(240,180,120,150);
pen.fillStyle="black";
pen.fillRect(180,250,60,175);
pen.fillStyle="black";
pen.fillRect(360,250,60,175);![]()