9**,7**,4**
复式 4 2 3/7 2 1/9 8 1
组选 9,7,4,2,8,1,3--9,7,4,2,8,1--9,7,4,2,8--9,7,4,2--9,7,4[包含组三]
直组 974,973,942,948,941,943,981,983,913,742,748,741,743,728,721,781,428,423,413,281