MAYBE 210.79/56.93 MAYBE 210.79/56.93 210.79/56.93 Problem: 210.79/56.93 f(f(a(),b()),x) -> f(a(),f(a(),x)) 210.79/56.93 f(f(b(),a()),x) -> f(b(),f(b(),x)) 210.79/56.93 f(x,f(y,z)) -> f(f(x,y),z) 210.79/56.93 210.79/56.93 Proof: 210.79/56.93 Open 210.79/56.93 EOF