(RULES
  a -> a
  a -> h(a,b)
  b -> h(b,f(f(b)))
  b -> b
  h(b,h(f(a),a)) -> a
)
(COMMENT
Cops #647 - #721: generated ground TRSs; evenly distributed in the
UNR/UNC/NFP/CR hierarchy
submitted by: Bertram Felgenhauer
)