WORST_CASE(?,O(n^1)) Solution: --------- "0" :: [] -(0)-> "A"(1) "Cons" :: ["A"(0)] -(0)-> "A"(0) "Nil" :: [] -(0)-> "A"(0) "S" :: ["A"(1)] -(1)-> "A"(1) "main" :: ["A"(1)] -(2)-> "A"(0) "take_l#2" :: ["A"(1)] -(1)-> "A"(0) Cost Free Signatures: ---------------------