198.35/50.70	MAYBE
198.35/50.70	
198.35/50.70	Problem:
198.35/50.70	 b(b(b(a(x1)))) -> a(b(a(a(x1))))
198.35/50.70	 a(a(a(b(x1)))) -> b(a(a(b(x1))))
198.35/50.70	 a(a(a(a(x1)))) -> a(a(b(b(x1))))
198.35/50.70	
198.35/50.70	Proof:
198.35/50.70	 Open
198.35/50.70	EOF