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