(CONDITIONTYPE ORIENTED)
(VAR x y)
(RULES
  a -> c
  a -> d
  b -> c
  b -> d
  c -> e
  d -> e
  k -> e
  l -> e
  s(c) -> t(k)
  s(c) -> t(l)
  s(e) -> t(e)
  g(x, x) -> h(x, x)
  f(x) -> pair(x, y) | s(x) == t(y)
)
(COMMENT
  \cite{G14}, example 23
  PhD Thesis, not yet published
)