://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='st'>"Week 1"</span>, <span class='st'>"Week 4"</span>, <span class='st'>"Week 8"</span>, <span class='st'>"Week 12"</span>, <span class='st'>"Week 16"</span>, 
                             <span class='st'>"Week 1"</span>, <span class='st'>"Week 4"</span>, <span class='st'>"Week 8"</span>, <span class='st'>"Week 12"</span>, <span class='st'>"Week 16"</span>, <span class='st'>"Week 20"</span><span class='op'>)</span>,
               