YES

# almost development closedness (van Oostrom 1997)

Consider the left-linear TRS R:

  f(g(x,a(),b())) -> x
  g(f(h(c(),d())),x,y) -> h(k1(x),k2(y))
  k1(a()) -> c()
  k2(b()) -> d()
  f(h(k1(a()),k2(b()))) -> f(h(c(),d()))
  f(h(c(),k2(b()))) -> f(h(c(),d()))
  f(h(k1(a()),d())) -> f(h(c(),d()))

R is left-linear and every critical pair is almost development closed