/home/nowonder/forschung/aprove/TPDB05/TRS/TRCSR/ExConc_Zan97_GM.trs

The program

(VAR X)
(RULES 
a__f(X) -> g(h(f(X)))
mark(f(X)) -> a__f(mark(X))
mark(g(X)) -> g(X)
mark(h(X)) -> h(mark(X))
a__f(X) -> f(X)
)