MAYBE
MAYBE
TRS:
 {
                    app(app(map(), f), nil()) -> nil(),
  app(app(map(), f), app(app(cons(), x), xs)) ->
  app(app(cons(), app(f, x)), app(app(map(), f), xs))
 }
 DUP: We consider a duplicating system.
  Trs:
   {
                      app(app(map(), f), nil()) -> nil(),
    app(app(map(), f), app(app(cons(), x), xs)) ->
    app(app(cons(), app(f, x)), app(app(map(), f), xs))
   }
  Fail