function setup(){
  var myCanvas = createCanvas(windowWidth,windowHeight); //you must keep this line 
y = 10
y2 = 600
y3 = 320
y4 = 200
y5 = 760
y6 = 800
y7 = 460
y8 = 300
y9 = 720
y10 = 600
y11 = 260
y12 = 80
}

function draw() {
  background(0)
 fill(0,100,225)
ellipse(10,y,10,20)
ellipse(100,y2,10,20)
ellipse(200,y3,10,20)
ellipse(300,y4,10,20)
ellipse(400,y5,10,20)
ellipse(620,y6,10,20)
ellipse(590,y7,10,20)
ellipse(220,y8,10,20)
ellipse(750,y9,10,20)
ellipse(27,y10,10,20)
ellipse(770,y11,10,20)
ellipse(540,y12,10,20)






y = y + 4

if (y > 800){
y = 0
}
y2 = y2 + 4

if (y2 > 800){
y2 = 0
}

y3 = y3 + 4

if (y3 > 800){
y3 = 0
}
y4 = y4 + 4

if (y4 > 800){
y4 = 0
}
y5 = y5 + 4

if (y5 > 800){
y5 = 0
}
y6 = y6 + 4

if (y6 > 800){
y6 = 0
}
y7 = y7 + 4

if (y7 > 800){
y7 = 0
}
y8 = y8 + 4

if (y8 > 800){
y8 = 0
}
y9 = y9 + 4

if (y9 > 800){
y9 = 0
}
y10 = y10 + 4

if (y10 > 800){
y10 = 0
}
y11 = y11 + 4

if (y11 > 800){
y11 = 0
}
y12 = y12 + 4

if (y12 > 800){
y12 = 0
}
}