Calculate the characters of the tensor products: 

and obtain their descomposition in terms of irreducible representations of SU(2).
 

1)D1/2 SU ((2)) 2)D'SU x D1/2 SU((2)) x DSU ((2)) D'SU ((2)) D1/2 3)D 3) D'su ((2)) X D/2 SU((2))