WORST_CASE(?,O(n^2))

Solution:
---------

  "#0" :: [] -(0)-> "A"(0, 0)
  "#and" :: ["A"(0, 0) x "A"(0, 0)] -(0)-> "A"(0, 1)
  "#eq" :: ["A"(0, 0) x "A"(0, 0)] -(0)-> "A"(0, 0)
  "#equal" :: ["A"(0, 0) x "A"(0, 0)] -(1)-> "A"(0, 0)
  "#false" :: [] -(0)-> "A"(0, 0)
  "#false" :: [] -(0)-> "A"(0, 1)
  "#neg" :: ["A"(0, 0)] -(0)-> "A"(0, 0)
  "#pos" :: ["A"(0, 0)] -(0)-> "A"(0, 0)
  "#s" :: ["A"(0, 0)] -(0)-> "A"(0, 0)
  "#true" :: [] -(0)-> "A"(0, 0)
  "#true" :: [] -(0)-> "A"(0, 1)
  "::" :: ["A"(0, 0) x "A"(0, 0)] -(0)-> "A"(0, 0)
  "::" :: ["A"(5, 0) x "A"(5, 0)] -(5)-> "A"(5, 0)
  "::" :: ["A"(7, 6) x "A"(13, 6)] -(7)-> "A"(7, 6)
  "::" :: ["A"(13, 6) x "A"(19, 6)] -(13)-> "A"(13, 6)
  "and" :: ["A"(0, 0) x "A"(0, 0)] -(1)-> "A"(0, 1)
  "eq" :: ["A"(0, 0) x "A"(5, 0)] -(3)-> "A"(0, 1)
  "eq#1" :: ["A"(0, 0) x "A"(5, 0)] -(2)-> "A"(0, 1)
  "eq#2" :: ["A"(0, 0)] -(1)-> "A"(0, 1)
  "eq#3" :: ["A"(5, 0) x "A"(0, 0) x "A"(0, 0)] -(1)-> "A"(0, 1)
  "nil" :: [] -(0)-> "A"(0, 0)
  "nil" :: [] -(0)-> "A"(5, 0)
  "nil" :: [] -(0)-> "A"(7, 6)
  "nil" :: [] -(0)-> "A"(13, 6)
  "nub" :: ["A"(7, 6)] -(2)-> "A"(0, 0)
  "nub#1" :: ["A"(7, 6)] -(1)-> "A"(0, 0)
  "remove" :: ["A"(0, 0) x "A"(13, 6)] -(2)-> "A"(7, 6)
  "remove#1" :: ["A"(13, 6) x "A"(0, 0)] -(1)-> "A"(7, 6)
  "remove#2" :: ["A"(0, 0) x "A"(0, 0) x "A"(8, 6) x "A"(19, 6)] -(10)-> "A"(7, 6)


Cost Free Signatures:
---------------------

  "#0" :: [] -(0)-> "A"_cf(0, 0)
  "#and" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#and" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "#eq" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#equal" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#false" :: [] -(0)-> "A"_cf(0, 0)
  "#false" :: [] -(0)-> "A"_cf(0, 1)
  "#neg" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#pos" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#s" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "#true" :: [] -(0)-> "A"_cf(0, 0)
  "#true" :: [] -(0)-> "A"_cf(0, 1)
  "::" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "::" :: ["A"_cf(6, 0) x "A"_cf(6, 0)] -(6)-> "A"_cf(6, 0)
  "and" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "and" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "eq" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "eq" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "eq#1" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "eq#1" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "eq#2" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "eq#2" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "eq#3" :: ["A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "eq#3" :: ["A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 1)
  "nil" :: [] -(0)-> "A"_cf(0, 0)
  "nil" :: [] -(0)-> "A"_cf(6, 0)
  "nub" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "nub#1" :: ["A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove" :: ["A"_cf(0, 0) x "A"_cf(6, 0)] -(0)-> "A"_cf(6, 0)
  "remove" :: ["A"_cf(0, 0) x "A"_cf(6, 0)] -(0)-> "A"_cf(0, 0)
  "remove#1" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove#1" :: ["A"_cf(6, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(6, 0)
  "remove#1" :: ["A"_cf(6, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove#2" :: ["A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove#2" :: ["A"_cf(0, 1) x "A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0)
  "remove#2" :: ["A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(6, 0) x "A"_cf(6, 0)] -(6)-> "A"_cf(6, 0)
  "remove#2" :: ["A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(0, 0) x "A"_cf(6, 0)] -(0)-> "A"_cf(0, 0)


Base Constructors:
------------------
  "\"#0\"_A" :: [] -(0)-> "A"(1, 0)
  "\"#0\"_A" :: [] -(0)-> "A"(0, 1)
  "\"#false\"_A" :: [] -(1)-> "A"(1, 0)
  "\"#false\"_A" :: [] -(0)-> "A"(0, 1)
  "\"#neg\"_A" :: ["A"(1, 0)] -(0)-> "A"(1, 0)
  "\"#neg\"_A" :: ["A"(1, 1)] -(1)-> "A"(0, 1)
  "\"#pos\"_A" :: ["A"(1, 0)] -(1)-> "A"(1, 0)
  "\"#pos\"_A" :: ["A"(1, 1)] -(1)-> "A"(0, 1)
  "\"#s\"_A" :: ["A"(1, 0)] -(1)-> "A"(1, 0)
  "\"#s\"_A" :: ["A"(1, 1)] -(1)-> "A"(0, 1)
  "\"#true\"_A" :: [] -(1)-> "A"(1, 0)
  "\"#true\"_A" :: [] -(0)-> "A"(0, 1)
  "\"::\"_A" :: ["A"(1, 0) x "A"(1, 0)] -(1)-> "A"(1, 0)
  "\"::\"_A" :: ["A"(0, 1) x "A"(1, 1)] -(0)-> "A"(0, 1)
  "\"nil\"_A" :: [] -(0)-> "A"(1, 0)
  "\"nil\"_A" :: [] -(0)-> "A"(0, 1)