pan class="fl">2</span>,<span class="fl">3</span>,<span class="fl">4</span>,<span class="fl">3</span>,<span class="fl">4</span>,<span class="fl">4</span><span class="op">)</span>, <span class="fl">0</span> <span class="op">)</span></span>
<span><span class="co"># The first dimension refers to the general factors while the other</span></span>
<span><span class="co"># dimensions refer to the specific factors.</span></span>
<span><span class="co"># The specification means that:</span></span>
<span><span class=