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function setup() {
createCanvas(windowWidth, windowHeight);
background(100);
frameRate(5);
}
function draw() {
background (random(100));
for(x=10; x<height; x+=40)
{
for(y=10; y<width; y+=80)
{
r=random(100)
fill (0,0,random(670,35,23,577));
rect(y, x, 15, 9);
}
}
}