YES TRS: :(:(x,y),z) -> :(x,:(y,z)) :(+(x,y),z) -> +(:(x,z),:(y,z)) :(z,+(x,f(y))) -> :(g(z,y),+(x,a())) max/plus interpretations on N: :_A(x1,x2) = max{6, 3, 13} :#_A(x1,x2) = max{15, 7, 2 + x2} +_A(x1,x2) = max{7, 8, -2 + x2} +#_A(x1,x2) = max{0, 8, x2} f_A(x1) = max{16, 18 + x1} f#_A(x1) = max{20, 18} g_A(x1,x2) = max{1, 1 + x1, 1} g#_A(x1,x2) = max{17, 0, 6} a_A = 1 a#_A = 19 precedence: f > a > : > + = g