[重点]主攻164905头。主攻273816尾.
1,排除278头,385百,275十495尾
2,铁卒:12.17,62,67.
3,三字现:412,417.246,467.912,917,962,967.
4,二定.XX12,XX17,XX62.XX67, XX11, XX16, XX61, XX66.
5,三定,1X12.1X17,1X62,1X67,6X12,6X17,6X62,6X67,8X12,8X17.
6,直码:1412.1417,1462,1467,1912.1917,1962,1967,6412,6417.