197.59/50.56 MAYBE 197.59/50.56 197.59/50.56 Problem: 197.59/50.56 b(a(b(b(a(a(b(b(a(x1))))))))) -> a(b(b(a(a(b(b(a(b(b(a(x1))))))))))) 197.59/50.56 197.59/50.56 Proof: 197.59/50.56 Open 197.59/50.57 EOF