198.73/50.69	MAYBE
198.73/50.70	
198.73/50.70	Problem:
198.73/50.70	 b(a(b(b(b(a(b(b(x1)))))))) -> b(b(a(b(b(b(a(b(a(b(b(b(a(b(x1))))))))))))))
198.73/50.70	
198.73/50.70	Proof:
198.73/50.70	 Open
198.73/50.70	EOF