rse.n">reverse.n</option>
<option value="reverse_stack.n">reverse_stack.n</option>
<option value="rich_poor.n">rich_poor.n</option>
<option value="rndclr.n">rndclr.n</option>
<option value="select_case2.n">select_case2.n</option>
<option value="select_case.n">select_case.n</option>
<option value="select.n">select.n</option>
<option value="sexpr.n">sexpr.n</option>
<option value="sine_qua_non.n">sine_qua_non.n</option>
<option value="solo_return.n">solo_return.n</option>
<option value="sort.n">sort.n</option