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function setup() { createCanvas(400, 400);}function draw() { background(255); //one(); //two(); //three(); four(); // five();}function one() { for (let i = 0; i < 400; i += 20) { for (let j = 0; j < 200; j += 40) { rect(i, j, 10, 10); } }}function two() { for (let i = 10; i < 255; i += 15) { for (let j = 10; j < 255; j += 15) { fill(i, j, 100); ellipse(i, j, 10, 10); } }}function three() { rectMode(CENTER); for (let i = 0; i < 400; i += 20) { for (let j = 0; j < 200; j += 40) { if (i % 40 === 0) { rect(i, j, 10, 10); } else { ellipse(i, j, 10, 10); } } }}function four() { for (let i = 60; i < 400; i += 20) { for (let j = i; j < 400; j += 20) { ellipse(i, j, 10, 10); } }}function five() { background(200); noStroke(); for (let i = 0; i < 400; i ++) { for (let j = 0; j < 400; j ++) { if (j % 3 === 0 && i % 2 === 0) { fill (255, 0, 0); } else { fill(100, 100, 255); } ellipse(i*20, j * 20, 10, 10); } }}