(STRATEGY
    INNERMOST)

(VAR
    x y)
(DATATYPES
    A = µX.< t, s(X), 0 >)
(SIGNATURES
    f :: [A x A x A] -> A
    g :: [A x A] -> A)
(RULES
    f(t(),x,y) -> f(g(x,y),x,s(y))
    g(s(x),0()) -> t()
    g(s(x),s(y)) -> g(x,y))