WORST_CASE(?,O(n^1)) Solution: --------- a :: [A(14)] -(0)-> A(0) b :: [A(14)] -(14)-> A(14) b :: [A(0)] -(0)-> A(0) Cost Free Signatures: --------------------- a :: [A_cf(0)] -(0)-> A_cf(0) b :: [A_cf(0)] -(0)-> A_cf(0) Base Constructors: ------------------ b_A :: [A(1)] -(1)-> A(1)