(RULES
  a -> h(a,f(b))
  f(f(h(a,a))) -> f(f(f(a)))
  f(h(a,h(a,a))) -> f(a)
  f(h(h(b,a),h(f(c),c))) -> c
)
(COMMENT Generated ground TRSs, evenly distributed in the UNR/UNC/NFP/CR hierarchy.)