[重点]主攻274938头,主攻052716尾.
1,排除051头,381百,052十,尾384
2,铁卒:21.26,71,76.
3,三字现:214,219.264,269,714,719,764,769.
4,二定.42XX,47XX,92XX.97XX, X21X, X26X, X71X, X76X.
5,三定,421X.426X,471X,476X,921X,976X,926X,971X,X215,X265.
6,直码:4210.4215,4260,4265,4710.4715,9260,9265,9210,9215.