<style>
  li {
    display: contents;
  }
</style>
<script>
  onload = () => {
    if (window.testRunner)
        testRunner.dumpAsText();
    document.execCommand('SelectAll');
    document.designMode = 'on';
    document.execCommand('InsertOrderedList');
    document.execCommand('InsertNestedOrderedList');
    document.write("This test passes if it doesn't crash");
  };
</script>