            [ 0  0  2  0  0  0  0  0 ]
                [                        ]
                [ 0  0  0  2  1  0  0  0 ]
(%o5)           [                        ]
                [ 0  0  0  0  2  1  0  0 ]
                [                        ]
                [ 0  0  0  0  0  2  0  0 ]
                [                        ]
                [ 0  0  0  0  0  0  2  0 ]
                [                        ]
                [ 0  0  0  0  0  0  0  3 ]
</pre>
<p>Antes de hacer uso de esta funci�