float drip = 5;
int space = 10;
int start = 10;
int down = 60;
int x = 20;
int y = 10;   

void setup(){
  size(340,560);
  background(255);
  smooth();  
}

void draw(){ 
 int ypos;
 ypos = y;
  noStroke();
  fill(0, 15);
  ellipseMode(CENTER);
  drip = drip + random(-0.3,0.3);
  ellipse(x,ypos, drip, drip);
  y = ++y;
  
  
   
  if (y > down){
    x = x+space;
    y = start;
  }
  
    if (x > width - 20) {
    x = space+10;
    y = y + 60;
    down = down + 60;
    start = start + 60;
    } 
   
   if (y>height - 20){
    noLoop();    
  } 
 
  
}