[重点]主攻492716头,主攻160549尾.
1,排除380头,492百,380十,382尾.
2,铁卒:31,36,81,86.
3,三字现:314,319,364,369,814,819,864,869.
4,二定:1X4X,1X9X,6X4X,6X9X,X34X,X39X,X84X,X89X,13XX,18XX
5,三定:134X,139X.184x,189X,634X,639X,684X,689X,13X4,13X9.
6,直码:1344,1349,1394,1399,6344,6349,6394,6399,6844,6849.