(STRATEGY INNERMOST) (VAR X) (DATATYPES A = µX.< a, g(X), n__f(X) >) (SIGNATURES f :: [A] -> A activate :: [A] -> A) (RULES f(f(a())) -> f(g(n__f(a()))) f(X) -> n__f(X) activate(n__f(X)) -> f(X) activate(X) -> X)