197.42/50.49	MAYBE
197.42/50.49	
197.42/50.49	Problem:
197.42/50.49	 b(a(b(a(a(a(a(a(a(a(x1)))))))))) -> a(a(a(a(a(a(a(a(b(a(b(b(a(b(x1))))))))))))))
197.42/50.49	
197.42/50.49	Proof:
197.42/50.49	 Open
197.42/50.50	EOF