[重点]主攻051649头,主攻051638尾.
1,排除278头,279百,058十,279尾.
2,铁卒:34,39,84,89.
3,三字现:304,309,354,359,804,809,854,859.
4,二定:X34X,X39X,X84X,X89X,X31X,X36X,X81X,X86X,X3X0,X3X5.
5,三定:X310,X315,X360,X365,X810,X815,X860,X865,X343,X348.
6,直码:5340,5345,5390,5395,5840,5845,5890,5895,0340,0345.