     private var fowardIcon2 = UIImageView(image: UIImage.fromName("play", for: PlayButton.self))
     private var fowardIcon3 = UIImageView(image: UIImage.fromName("play", for: PlayButton.self))
     
+    private var leftBubbleView = UIView()
+    private var rightBubbleView = UIView()
+    
+    private var leftBubbleHeight = NSLayoutConstraint()
+    private var leftBubbleWidth = NSLayoutConstraint()
+    
+    private var rightBubbleHeight = NSLayoutConstraint()
+    private var rightBubbleWidth = NSLayoutConstraint()
+    
     init(_ core: Core?) {
         self.core = core
         setup(core)

            })
        })
    }

    private func animate(_ image: UIImageView, delay: TimeInterval) {
        core?.view.bringSubview(toFront: image)
        UIView.animate(withDuration: 0.15, delay: delay, animations: {

    
    func animateForward() {
        guard let playback = core?.activePlayback,
            playback.position + 10 < playback.duration,
            let view = core?.view else { return }
        animate(rightBubbleView, parentView: view, widthConstraint: rightBubbleWidth, heightConstraint: rightBubbleHeight)
        animate(fowardLabel)
        animate(fowardIcon1, delay: 0)
        animate(fowardIcon2, delay: 0.2)
        animate(fowardIcon3, delay: 0.4)
    }
    
    private func animate(_ bubbleView: UIView, parentView: UIView, widthConstraint: NSLayoutConstraint, heightConstraint: NSLayoutConstraint) {
        core?.view.bringSubview(toFront: bubbleView)
        
        widthConstraint.constant = parentView.frame.width
        heightConstraint.constant = parentView.frame.height
        
        UIView.animate(withDuration: 0.4, animations: {
            bubbleView.alpha = 1.0
            bubbleView.addRoundedBorder(with: heightConstraint.constant / 2)
            self.core?.view.layoutSubviews()
        }, completion: { _ in
            UIView.animate(withDuration: 0.2, delay: 0.3, animations: {
                bubbleView.alpha = 0.0
                self.core?.view.layoutSubviews()
            }, completion: { _ in
                heightConstraint.constant = 0
                widthConstraint.constant = 0
                self.core?.view.layoutSubviews()
            })
        })
    }
    
    private func animate(_ label: UILabel) {
