YES
O(n^2)
TRS:
 {f(h(x)) -> f(i(x)),
   i(a()) -> b(),
   h(a()) -> b(),
  g(i(x)) -> g(h(x))}
 Natural interpretation:
  Strict:
   {f(h(x)) -> f(i(x)),
     i(a()) -> b(),
     h(a()) -> b(),
    g(i(x)) -> g(h(x))}
  Weak:
   {}
  Interpretation class: deltarestricted
  [a](delta) = + 2 + 0*delta
  [b](delta) = + 0 + 0*delta
  [g](delta, X0) = + 0*X0 + 0 + 1*X0*delta + 0*delta
  [h](delta, X0) = + 0*X0 + 1 + 2*X0*delta + 0*delta
  [i](delta, X0) = + 0*X0 + 0 + 2*X0*delta + 2*delta
  [f](delta, X0) = + 1*X0 + 0 + 3*X0*delta + 0*delta
  
  
  g_tau_1(delta) = delta/(0 + 1 * delta)
  h_tau_1(delta) = delta/(0 + 2 * delta)
  i_tau_1(delta) = delta/(0 + 2 * delta)
  f_tau_1(delta) = delta/(1 + 3 * delta)
  
  Qed