YES
O(n^2)
TRS:
 {app(app(app(compose(), f), g), x) -> app(f, app(g, x))}
 Natural interpretation:
  Strict:
   {app(app(app(compose(), f), g), x) -> app(f, app(g, x))}
  Weak:
   {}
  Interpretation class: deltarestricted
  [compose](delta) = + 1 + 0*delta
  [app](delta, X1, X0) = + 0*X0 + 0*X1 + 0 + 1*X0*delta + 1*X1*delta + 0*delta
  
  app_tau_1(delta) = delta/(0 + 1 * delta)app_tau_2(delta) = delta/(0 + 1 * delta)
  
  Qed