填空题:设向量组<img src="http://www.weimei168.com/uploads/202208/16126752531321.png" width="20" height="29" />=(0，3，1，2)<img src="http://www.weimei168.com/uploads/202208/161267525832321.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161267527263891.png" width="24" height="29" />=(1，-2，2，O)<img src="http://www.weimei168.com/uploads/202208/161267525832321.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161267527694301.png" width="22" height="30" />=(1，-1，2，4)<img src="http://www.weimei168.com/uploads/202208/161267525832321.png" width="14" height="25" />，<img src="http://www.weimei168.com/uploads/202208/161267528286291.png" width="24" height="29" />=(3，0，7，14)<img src="http://www.weimei168.com/uploads/202208/161267525832321.png" width="14" height="25" />，则该向量组的极大无关组是_____.