[重点]主攻273816头,主攻052738尾.
1,排除490头,159百,273十,尾491
2,铁卒:20.25,70,75.
3,三字现:201,206.251,256,701.706,751,756.023.
4,二定.2XX0,2XX5,7XX0.7XX5, 3XX0, 3XX5, 8XX0, 8XX5.
5,三定,22X0.22X5,27X0,27X5,77X0,77X5,72X0,72X5,82X0,82X5.
6,直码:2210.2215,2260,2265,2710.2715,2760,2765.7210,7215.