Section 31(1) provided that there are to be prescribed classes of visas and s 31(2) recognised that, "[a]s well as the prescribed classes" of visas (to be prescribed by regulation**[61]**), "there are the classes provided for by sections 32, 33, 34, 35, 36, 37, 37A, 38, 38A and 38B". Those classes were, respectively, "special category visas", "special purpose visas", "absorbed person visas", "ex-citizen visas", "protection visas", "bridging visas", "temporary safe haven visas", "criminal justice visas", "enforcement visas" and "maritime crew visas". Section 31(3) provided that "[t]he regulations may prescribe criteria for a visa or visas of a specified class (which, without limiting the generality of this subsection, may be a class provided for by section 32, 36, 37, 37A or 38B but not by section 33, 34, 35, 38 or 38A)". Thus, the regulations could prescribe criteria for "special category visas", "protection visas", "bridging visas", "temporary safe haven visas" and "maritime crew visas" but not for any other statutorily created class of visas.