MAYBE
219.60/55.52	MAYBE
219.60/55.52	
219.60/55.52	Problem:
219.60/55.52	 a(a(b(b(a(b(x1)))))) -> a(b(b(a(a(b(b(a(x1))))))))
219.60/55.52	
219.60/55.52	Proof:
219.60/55.52	 Open
219.60/55.52	EOF