<body>
  <p class="bar hello">One</p>
  <p class="baz quux hello">Two</p>
  <p class="hello">Three</p>
  <p class="bar baz hello">Four</p>
  <p id="world" class="bar">One</p>
  <p id="world" class="baz quux">Two</p>
  <p id="world">Three</p>
  <p id="world" class="bar baz">Four</p>
  <p class="bar hello" id="world">One</p>
  <p class="baz quux hello" id="world">Two</p>
  <p class="hello" id="world">Three</p>
  <p class="bar baz hello" id="world">Four</p>
  <p class="bar world hello">One</p>
  <p class="baz quux world hello">Two</p>
  <p class="world hello">Three</p>
  <p class="bar baz world hello">Four</p>
  <p class="bar hello">One</p>
  <p class="baz quux hello">Two</p>
  <p class="hello">Three</p>
  <p class="bar baz hello">Four</p>
  <p class="bar world hello">One</p>
  <p class="baz quux world hello">Two</p>
  <p class="world hello">Three</p>
  <p class="bar baz world hello">Four</p>
  <p class="bar">One</p>
  <p class="baz quux">Two</p>
  <p>Three</p>
  <p class="bar baz">Four</p>
</body>
