; @origtpdbfilename ./TRS/Zantema/z12.trs
; @xtcfilename "./TRS_Standard/Zantema_05/z12.xml"
(format TRS)
(fun f 2)
(fun a 1)
(fun b 1)
(rule (f x (a (a (b (b y))))) (f (a (a (a (b (b (b x)))))) y))
(rule (f (a x) y) (f x (a y)))
(rule (f (b x) y) (f x (b y)))