let rng = [];

  if (stop===undefined) [start, stop] = [0, start];

  for (let i=start; step>0 ? i<stop : i>stop; i+=step) rng.push(i);

  return rng;

}

​

function setup() {

  createCanvas(600, 800);

  background(0);

  noStroke();

​

  fill('red')

  translate(100, 50)

  circle(0, 0, 30)

  circle(0, 60, 30)

  circle(0, 120, 30)

  circle(0, 180, 30)

  circle(0, 240, 30)

  circle(0, 300, 30)

​

  let spacing = 60

  let radius = 30

​

  fill('orange')

  translate(125, 0)

  circle(0, 0, radius)

  circle(0, 1*spacing, radius)

  circle(0, 2*spacing, radius)

  circle(0, 3*spacing, radius)

  circle(0, 4*spacing, radius)

  circle(0, 5*spacing, radius)

  fill('yellow')

  translate(125, 0)

  for (const i of range(6)){

    circle(0, i*spacing, radius)

  }

​

  fill('limegreen')

  translate(125, 0)

  for (const i of range(2, 5)){

    circle(0, i*spacing, radius)

  }

}

​