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