let y1 = 20;

let x2 = 20;

let y2 = 0;

let space = 20;

​

function setup() {

  createCanvas(400, 400);

  background(42, 157, 143);

}

​

function draw() {

  textSize(40);

  strokeWeight(5);

​

  if (random() > 0.9) {

    stroke(244, 162, 97);

    line(x1, y1, x1 + space, y2);

  } else {

    stroke(244, 162, 97);

    line(x1, y1 - space, x1 + space, y2 + space);

  }

​

  if(x1 > width){

    x1 = 0;

    y2 += space;

    y1 += space;

  }

  x1 = x1 + space;

}

​