713.44/299.39	MAYBE
713.44/299.40	
713.44/299.40	Problem:
713.44/299.40	 strict:
713.44/299.40	  b(b(a(a(b(a(b(x1))))))) -> b(a(b(b(a(b(b(x1)))))))
713.44/299.40	  b(b(b(x1))) -> b(b(a(b(b(x1)))))
713.44/299.40	 weak:
713.44/299.40	  b(a(b(x1))) -> b(a(b(a(a(b(x1))))))
713.44/299.40	
713.44/299.40	Proof:
713.44/299.40	 Open
713.48/299.40	EOF