t;&quot;&quot;&quot;&quot; &quot;   &quot;  &quot;&quot;&quot;&quot;   &quot;
                  &quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;   &quot;  &quot; 2&quot;   &quot;
                                   &quot;  &quot;h &quot;   &quot;
                                   &quot;  &quot;&quot;&quot;&quot;   &quot;
                                   &quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;&quot;
(%i4) rembox (expr2, unlabelled);
                 