MAYBE
219.32/55.47	MAYBE
219.32/55.47	
219.32/55.47	Problem:
219.32/55.47	 b(a(b(a(a(b(x1)))))) -> b(b(a(b(a(b(x1))))))
219.32/55.47	 b(a(b(b(x1)))) -> b(b(a(a(b(a(b(x1)))))))
219.32/55.47	
219.32/55.47	Proof:
219.32/55.47	 Open
219.32/55.48	EOF