>seq</span>[<span class="hljs-built_in">bool</span>]
  <span class="hljs-keyword">for</span> i <span class="hljs-keyword">in</span> <span class="hljs-number">0</span> .. n.values.<span class="hljs-keyword">high</span>:
    <span class="hljs-keyword">if</span> left.len &lt; n.lefts[i].len:
      <span class="hljs-keyword">for</span> _ <span class="hljs-keyword">in</span> left.len ..&lt; n.lefts[i].len:
        <span class="hljs-literal">result</span>.add <span class="hljs-string">'['</span>
    <span class="