<span class="identifier">add</span>
                <span class="special">(</span><span class="string">"C"</span>  <span class="special">,</span> <span class="number">100</span><span class="special">)(</span><span class="string">"CC"</span>  <span class="special">,</span> <span class="number">200</span><span class="special">)(</span><span class="string">"CCC"</span>  <span class="special">,</span> <span class="number">300</span><span class="special">)(</span><span class="string">"CD"</span> <span class="spe