  By using Ocneanu's result on the classification of all irreducible
connections on the Dynkin diagrams, we show that the dual principal graphs as
well as the fusion rules of bimodules arising from any Goodman-de la
Harpe-Jones subfactors are obtained by a purely combinatorial method. In
particular we obtain the dual principal graph and the fusion rule of bimodules
arising from the Goodman-de la Harpe-Jones subfactor corresponding to the
Dynkin diagram $E_8$. As an application, we also show some subequivalence among
$A$-$D$-$E$ paragroups.
