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