 class="op">&lt;</span>chr<span class="op">&gt;</span><span class="st">               </span><span class="er">&lt;</span>chr<span class="op">&gt;</span><span class="st">           </span><span class="er">&lt;</span>dbl<span class="op">&gt;</span><span class="st"> </span><span class="er">&lt;</span>chr<span class="op">&gt;</span><span class="st">       </span><span class="er">&lt;</span>chr<span class="op">&gt;</span><span class="st">                </span><span class="er">&lt;</span>dbl<span class="op">&gt;