>  qfactor(T(4,4));
                                      5        8
                              q (1 - q ) (1 - q )
                              -------------------
                                     2
                               (1 - q ) (1 - q)

>  qfactor( aqprod(q,q,3)*T(0,6) );
                                        2   3       6
                         -(1 - q) (1 - q ) q  (1 - q )

>  qfactor( aqprod(q,q,3)*T(1,6) );
                                2        3   3       7
                         -(1 - q ) (1 - q ) q  (1 - q )

>  qfactor( aqprod(q,q,3)*T(2,6) );
                                3   3       4        8
                         -(1 - q ) q  (1 - q ) (1 - q )

>  qfactor( aqprod(q,q,3)*T(3,6) );
                           3       4        5        9
                         -q  (1 - q ) (1 - q ) (1 - q )

>  
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