YES TRS: f(f(x)) -> f(c(f(x))) f(f(x)) -> f(d(f(x))) g(c(x)) -> x g(d(x)) -> x g(c(0())) -> g(d(1())) g(c(1())) -> g(d(0())) max/plus interpretations on N: f_A(x1) = max{16, 11 + x1} f#_A(x1) = max{0, 5 + x1} c_A(x1) = max{8, -17 + x1} c#_A(x1) = max{20, 6} d_A(x1) = max{6, -20 + x1} d#_A(x1) = max{20, 7} g_A(x1) = max{26, 20 + x1} g#_A(x1) = max{8, 13 + x1} 0_A = 16 0#_A = 11 1_A = 14 1#_A = 20 precedence: f > c > 1 > d > g > 0