no">   38</span>&#160;    <span class="keywordflow">while</span> (pre_filter.HasNext()) {</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;      range = pre_filter.Next();</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;      Cut(range.begin, range.end, wrs);</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    }</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    words.c