n> <span class="identifier">S</span>     <span class="identifier">S</span>   
                                   <span class="identifier">m</span>  <span class="special">|</span> <span class="identifier">m</span>   <span class="identifier">m</span>              <span class="identifier">M</span>  <span class="special">|</span> <span class="identifier">M</span> <span class="identifier">M</span>     <span class="identifier">M</span>   
</pre>
<p>
        </p>
<p>
          The differences for the different fun