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