198.02/50.67	MAYBE
198.02/50.67	
198.02/50.67	Problem:
198.02/50.67	 b(b(a(a(b(x1))))) -> b(a(a(b(b(x1)))))
198.02/50.67	 b(a(a(a(b(b(x1)))))) -> b(b(a(a(a(b(x1))))))
198.02/50.67	 b(a(b(a(a(b(x1)))))) -> b(a(b(b(a(a(a(b(x1))))))))
198.02/50.67	 b(a(a(a(b(a(b(x1))))))) -> b(a(a(b(a(b(x1))))))
198.02/50.67	
198.02/50.67	Proof:
198.02/50.67	 Open
198.02/50.68	EOF