[重点]主攻273805头.主攻163827尾.
1,排除496头,497百,163十,尾059
2,铁卒:71.76,74,79.
3,三字现:741,746.791,796,521.526,571,576.579.
4,二定.X1X1,X1X6,X6X1.X6X6, X3X1, X3X6, X8X1, X8X6.
5,三定,71X1.71X6,76X1,76X6,21X1,21X6,76X1,76X6,73X1,73X6.直码:7141.7146,7191,7196,7641.7646,7691,7696.2141,2146.