SOURCE

function setup(){
    createCanvas(300,300)
    background(255)
}
function draw(){
    let x=25
    let y=25
    stroke(0)
    for(let i=1;i<=6;i++){
    ellipse(x,y,50,50)
    ellipse(x,y+50,50,50)
    ellipse(x,y+100,50,50)
    ellipse(x,y+150,50,50)
    ellipse(x,y+200,50,50)
    ellipse(x,y+250,50,50)
    x+=50
    
}
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.1.9/p5.min.js"></script>