(STRATEGY
    INNERMOST)

(VAR
    X X1 X2 Y)
(DATATYPES
    A = µX.< g(X), n__f(X, X) >)
(SIGNATURES
    f :: [A x A] -> A
    activate :: [A] -> A)
(RULES
    f(g(X),Y) -> f(X
                  ,n__f(g(X),activate(Y)))
    f(X1,X2) -> n__f(X1,X2)
    activate(n__f(X1,X2)) -> f(X1
                              ,X2)
    activate(X) -> X)