">=</span> <span class="va">Freq</span>,</span></span>
<span class="r-in"><span>                 axis1 <span class="op">=</span> <span class="va">Class</span>, axis2 <span class="op">=</span> <span class="va">Sex</span>, axis3 <span class="op">=</span> <span class="va">Age</span><span class="op">)</span><span class="op">)</span> <span class="op">+</span></span></span>
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