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function setup() {
createCanvas(windowWidth, windowHeight);
background(0);
noStroke();
fill(0, 127, 255, 127);
let x = width / 2;
let y = height / 2;
let diameter = height;
ellipse(x, y, diameter, diameter);
diameter = diameter / 1.4;
ellipse(x, y, diameter, diameter);
diameter = diameter / 1.4;
ellipse(x, y, diameter, diameter);
diameter = diameter / 1.4;
ellipse(x, y, diameter, diameter);
diameter = diameter / 1.4;
ellipse(x, y, diameter, diameter);
}