app app : app app : app app : app app : C x y z u app app : app app : x z app app : app app : app app : x y z u app app map f nil nil app app map f app app cons x xs app app cons app f x app app map f xs app app filter f nil nil app app filter f app app cons x xs app app app app filter2 app f x f x xs app app app app filter2 true f x xs app app cons x app app filter f xs app app app app filter2 false f x xs app app filter f xs app 2 : 0 C 0 map 0 nil 0 cons 0 filter 0 filter2 0 true 0 false 0 FULL ./TRS/currying/D33/30.trs