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We consider N = 1 SU(2) x SU(2) supersymmentric gauge theory with n matter fields transforming in the (2,2) representation and one matter field transforming in the (1,3) representation. For n = 0, 1, 2 we derive an exact super potential. Various consistency checks are applied on the result. For n = 2 we obtain signals that at special values of the light fields additional degrees of freedom become massless.