YES TRS: g(f(x,y),z) -> f(x,g(y,z)) g(h(x,y),z) -> g(x,f(y,z)) g(x,h(y,z)) -> h(g(x,y),z) linear polynomial interpretations on N: g_A(x1,x2) = x1 + x2 g#_A(x1,x2) = x1 + x2 f_A(x1,x2) = x1 + x2 + 1 f#_A(x1,x2) = x1 + x2 + 1 h_A(x1,x2) = x1 + x2 + 2 h#_A(x1,x2) = x1 + x2 + 2 precedence: g > f = h