 class="o">*</span><span class="p">,</span><span class="s1">&#39;(a)&#39;</span><span class="p">,</span><span class="n">advance</span><span class="o">=</span><span class="s1">&#39;no&#39;</span><span class="p">)</span><span class="n">string</span><span class="w"></span>
<span class="k">end program </span><span class="n">backwords</span><span class="w"></span>
</pre></div>

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