; @origtpdbfilename ./TRS/Zantema/z17.trs
; @xtcfilename "./TRS_Standard/Zantema_05/z17.xml"
(format TRS)
(fun f 2)
(fun a 1)
(fun b 1)
(fun c 1)
(fun d 1)
(rule (f x (a (b y))) (f (c (d x)) y))
(rule (f (c x) y) (f x (a y)))
(rule (f (d x) y) (f x (b y)))