text: <!DOCTYPE HTML>
  <html>
    <body>
  
      <!-- Too many separators: Excess is ignored -->
      <math>
        <mfenced separators=";;;;,,,,">
          <mi>a</mi> 
          <mi>b</mi> 
          <mi>c</mi> 
          <mi>d</mi> 
          <mi>e</mi>  
        </mfenced>
      </math>
      
      <!-- Too few separators: Last separator is repeated -->
      <math>
        <mfenced separators=";;,">
          <mi>a</mi> 
          <mi>b</mi> 
          <mi>c</mi> 
          <mi>d</mi> 
          <mi>e</mi>  
        </mfenced>
      </math>
  
    </body>
  </html>
  