(STRATEGY
    INNERMOST)

(VAR
    x y)
(DATATYPES
    A = µX.< a, g(X) >)
(SIGNATURES
    f :: [A] -> A
    h :: [A] -> A
    k :: [A x A x A] -> A)
(RULES
    f(a()) -> g(h(a()))
    h(g(x)) -> g(h(f(x)))
    k(x,h(x),a()) -> h(x)
    k(f(x),y,x) -> f(x))