imageView2.center = CGPointMake(imageView2.center.x+pos.x,imageView2.center.y+pos.y);

imageView3.center = CGPointMake(imageView3.center.x+pos.x,imageView3.center.y+pos.y);


imageView4.center = CGPointMake(imageView4.center.x+pos.x,imageView4.center.y+pos.y);

pos = CGPointMake(0.0, 3.0);