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function setup() {
createCanvas(windowWidth, windowHeight);
background(100);
}
function draw() {
background(150);
for(i=200; i<700; i+=150)
{
for(j=200; j<700; j+=100)
{
push();
r=random(50)
fill(random(255));
rotate(sin(millis()/1000));
ellipse(i,j, r,r);
rect(i,j,r,r);
pop();
}
}
}