WORST_CASE(?,O(n^0)) Solution: --------- "0" :: [] -(0)-> "A"(0) "cons" :: ["A"(0)] -(0)-> "A"(0) "filter" :: ["A"(0) x "A"(0) x "A"(0)] -(1)-> "A"(0) "nats" :: ["A"(0)] -(1)-> "A"(0) "s" :: ["A"(0)] -(0)-> "A"(0) "sieve" :: ["A"(0)] -(1)-> "A"(0) "zprimes" :: [] -(3)-> "A"(0) Cost Free Signatures: --------------------- Base Constructors: ------------------