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) max/plus interpretations on N: a__f_A(x1) = max{2, 5 + x1} a__f#_A(x1) = max{5, 1} g_A(x1) = max{5, 3 + x1} g#_A(x1) = max{0, 4} h_A(x1) = max{2, -1} h#_A(x1) = max{4, 2} f_A(x1) = max{3, 5 + x1} f#_A(x1) = max{3, 3} mark_A(x1) = max{1, 1 + x1} mark#_A(x1) = max{5, 3} precedence: g > mark > a__f > h = f