130Prescribed periods

130  Prescribed periods   Regulations prescribing a period for the purpose of paragraph 129(1)(c) may prescribe different periods and specify when a particular period is to apply, which, without limiting the generality of the power, may be to:  (a) visas of a specified class; or  (b) former visa holders in specified circumstances; or  (c) former visa holders in a specified class of persons (which may be former visa holders in a specified place); or  (d) former visa holders in a specified class of persons (which may be former visa holders in a specified place) in specified circumstances.