        </p></dd>
</dl>
</div>
<p>
        It is possible that <code class="computeroutput"><span class="identifier">R</span><span class="special">(</span><span class="identifier">S</span><span class="special">)</span></code> is not
        enclosed by <code class="computeroutput"><span class="identifier">R</span><span class="special">(</span><span class="identifier">T</span><span class="special">)</span></code>, while
        neither is <code class="computeroutput"><span class="identifier">R</span><span cl