WORST_CASE(?,O(n^2)) Solution: --------- "Cons" :: ["A"(14, 0) x "A"(14, 11)] -(3)-> "A"(3, 11) "Cons" :: ["A"(1, 0) x "A"(1, 0)] -(1)-> "A"(1, 0) "Cons" :: ["A"(4, 0) x "A"(4, 0)] -(4)-> "A"(4, 0) "Cons" :: ["A"(0, 0) x "A"(0, 0)] -(0)-> "A"(0, 0) "Nil" :: [] -(0)-> "A"(3, 11) "Nil" :: [] -(0)-> "A"(4, 0) "Nil" :: [] -(0)-> "A"(1, 0) "Nil" :: [] -(0)-> "A"(8, 8) "Nil" :: [] -(0)-> "A"(15, 14) "Nil" :: [] -(0)-> "A"(14, 14) "append#2" :: ["A"(4, 0) x "A"(1, 0)] -(0)-> "A"(0, 0) "main" :: ["A"(13, 13)] -(16)-> "A"(0, 0) "rev#1" :: ["A"(3, 11)] -(13)-> "A"(0, 0) Cost Free Signatures: --------------------- "Cons" :: ["A"_cf(11, 0) x "A"_cf(11, 0)] -(11)-> "A"_cf(11, 0) "Cons" :: ["A"_cf(8, 0) x "A"_cf(8, 5)] -(3)-> "A"_cf(3, 5) "Cons" :: ["A"_cf(4, 0) x "A"_cf(4, 0)] -(4)-> "A"_cf(4, 0) "Cons" :: ["A"_cf(8, 0) x "A"_cf(8, 4)] -(4)-> "A"_cf(4, 4) "Cons" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0) "Nil" :: [] -(0)-> "A"_cf(11, 0) "Nil" :: [] -(0)-> "A"_cf(4, 12) "Nil" :: [] -(0)-> "A"_cf(4, 0) "Nil" :: [] -(0)-> "A"_cf(8, 5) "Nil" :: [] -(0)-> "A"_cf(12, 14) "Nil" :: [] -(0)-> "A"_cf(12, 15) "Nil" :: [] -(0)-> "A"_cf(14, 12) "Nil" :: [] -(0)-> "A"_cf(0, 0) "append#2" :: ["A"_cf(4, 0) x "A"_cf(3, 5)] -(2)-> "A"_cf(4, 0) "append#2" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0) "rev#1" :: ["A"_cf(11, 0)] -(0)-> "A"_cf(4, 0) Base Constructors: ------------------ "\"Cons\"_A" :: ["A"(1, 0) x "A"(1, 0)] -(1)-> "A"(1, 0) "\"Cons\"_A" :: ["A"(1, 0) x "A"(1, 1)] -(0)-> "A"(0, 1) "\"Nil\"_A" :: [] -(0)-> "A"(1, 0) "\"Nil\"_A" :: [] -(0)-> "A"(0, 1)