YES TRS: f(g(h(x,y)),f(a(),a())) -> f(h(x,x),g(f(y,a()))) max/plus interpretations on N: f_A(x1,x2) = max{18, -1 + x1, -8} f#_A(x1,x2) = max{34, 28 + x1, 1} g_A(x1) = max{3, 9 + x1} g#_A(x1) = max{17, 12 + x1} h_A(x1,x2) = max{5, -10 + x1, -2 + x2} h#_A(x1,x2) = max{0, -1, 33} a_A = 3 a#_A = 32 precedence: f > h > a > g