YES 1: f(g(x1)) -> h(g(x1),g(x1)) 2: f(s(x1)) -> h(s(x1),s(x1)) 3: g(x1) -> s(x1) @Rule Labeling --- R 1: f(g(x1)) -> h(g(x1),g(x1)) 2: f(s(x1)) -> h(s(x1),s(x1)) 3: g(x1) -> s(x1) --- S 1: f(g(x1)) -> h(g(x1),g(x1)) 2: f(s(x1)) -> h(s(x1),s(x1)) 3: g(x1) -> s(x1)