/home/nowonder/forschung/aprove/TPDB05/TRS/Zantema/z03.trs

The program

(VAR x)
(RULES
a(f,a(g,a(f,x))) -> a(f,a(g,a(g,a(f,x))))
a(g,a(f,a(g,x))) -> a(g,a(f,a(f,a(g,x))))
)

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