(VAR x y) (RULES app(f, 0) -> true app(f, 1) -> false app(f, app(s, x)) -> app(f, x) app(app(app(if, true), x), y) -> x app(app(app(if, false), x), y) -> y app(app(g, app(s, x)), app(s, y)) -> app(app(app(if, app(f, x)), app(s, x)), app(s, y)) app(app(g, x), app(c, y)) -> app(app(g, x), app(app(g, app(s, app(c, y))), y)) ) (STRATEGY INNERMOST)