rules

<choose>
	  <when>
	    <test>
	      <equal>
		<clip pos="5" part="nbr"/>
		<lit-tag v="ND"/>
	      </equal>
	    </test>
	    <let>
	      <clip pos="5" part="nbr"/><!--sempre serà pl-->
	      <lit-tag v="pl"/>
	    </let>
	  </when>
	</choose>




<choose>
	  <when>
	    <test>
	      <equal>
		<clip pos="3" part="gen"/>
		<lit-tag v="GD"/>
	      </equal>
	    </test>
	    <let>
	      <clip pos="3" part="gen"/>
	      <lit-tag v="m"/>
	    </let>
	  </when>
	</choose>