YES TRS: a__f(X) -> g(h(f(X))) mark(f(X)) -> a__f(mark(X)) mark(g(X)) -> g(X) mark(h(X)) -> h(mark(X)) a__f(X) -> f(X) linear polynomial interpretations on N: a__f_A(x1) = x1 + 2 a__f#_A(x1) = x1 + 2 g_A(x1) = x1 g#_A(x1) = x1 h_A(x1) = x1 h#_A(x1) = x1 f_A(x1) = x1 + 2 f#_A(x1) = x1 + 2 mark_A(x1) = x1 + 1 mark#_A(x1) = x1 + 1 precedence: mark > a__f > g = h = f