[重点]主攻051649头,主攻384905尾.
1,排除278头,498百,589十,尾276.
2,铁卒:23,28,73,78.
3,三字现:023,028,073,078,523,528,573,578.
4,二定:5XX3,5XX8.0XX3,0XX8,X2X3,X2X8,X7X3,X7X8,52XX.
5,三定:02X3,02X8,07X3,07X8,52X3,52X8,57X3,57X8,023X,073X.
6,直码:0233,0238,0733,0738,5233.5238,5733,5738,5753,5703.