247期：←24码→（04,05,06,07,10,12,13,17,19,20,22,23,24,26,28,32,33,36,37,38,40,44,45,46）开：40准
248期：←24码→（01,02,04,05,10,11,15,19,20,22,23,24,25,26,28,32,34,36,39,41,42,45,46,49）开：20准
249期：←24码→（02,04,05,08,12,13,14,16,19,20,21,23,27,28,29,34,35,38,39,42,43,45,47,49）开：23准
250期：←24码→（02,04,06,08,10,12,13,17,19,21,22,27,30,31,35,36,38,39,41,42,44,45,47,48）开：14错
251期：←24码→（04,05,08,09,10,11,13,16,17,22,23,25,26,27,29,31,32,36,42,43,44,45,47,48）开：30错
252期：←24码→（03,05,08,09,10,11,13,14,15,16,20,21,22,23,24,25,27,32,37,38,39,43,47,48）开：？？