253期:((03,09,15,19,26,28,29,31,33,35,36,37,40,41,46,47))开:47√
254期:((04,05,06,08,09,12,15,20,24,27,28,29,33,37,41,42))开:27√
255期:((07,11,12,14,22,23,25,27,31,33,36,39,40,43,48,49))开:30x
256期:((03,04,05,08,11,14,15,21,22,23,25,27,30,34,44,47))开:39x
257期:((03,07,09,11,12,14,19,22,28,29,31,33,38,39,47,48))开://