填空题:设向量组<img src="http://www.weimei168.com/uploads/202208/161258236130391.png" width="20" height="29" />=(3，3，3)<img src="http://www.weimei168.com/uploads/202208/161258238013901.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258236854571.png" width="24" height="29" />=(4，5，6)<img src="http://www.weimei168.com/uploads/202208/161258238013901.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161258237480031.png" width="22" height="30" />=(3，2，1)<img src="http://www.weimei168.com/uploads/202208/161258238013901.png" width="14" height="25" />与等价，则向量组β<img src="http://www.weimei168.com/uploads/202208/161258242977531.png" width="10" height="29" />，β2，β3的秩为_______．