Карусель 3 изображения по одному

var x = document.getElementsByClassName("slide");
var y;
var index = 0;
feed();

function feed() {
  for (y = 0; y < x.length; y++) {
    if (y > 2) {
      x[y].style.display = "none";
    }
  }
  index++;
  if (index > x.length) {
    index = 1
  }

  x[index - 1].style.display = "none";

  setTimeout(feed, 1000); // Change image every 2 seconds
}

.slide {
  display: block;
  width:   200px;
  height:  auto;
}
.container
{
  width:   200px;
  height:  600px;
}

<div class = "container">
  <img class = "slide" src = "https://i.imgur.com/m9aYOcc.jpg">
  <img class = "slide" src = "https://i.imgur.com/fyX7DaN.jpg">
  <img class = "slide" src = "https://i.imgur.com/76AVqI2.jpg">
  <img class = "slide" src = "https://i.imgur.com/BXM4J5X.jpg">
  <img class = "slide" src = "https://i.imgur.com/D8f9h4q.jpg">
</div>