MAYBE 219.63/55.52 MAYBE 219.63/55.52 219.63/55.52 Problem: 219.63/55.52 c(a(a(b(a(x1))))) -> a(a(b(a(c(c(a(a(b(x1))))))))) 219.63/55.52 219.63/55.52 Proof: 219.63/55.52 Open 219.63/55.52 EOF