248期：←24码→（02,03,05,12,13,15,16,18,21,22,23,24,25,26,30,31,34,35,38,39,41,42,43,45）开：15准
249期：←24码→（03,07,09,10,11,12,19,20,25,26,27,28,29,30,31,34,35,38,39,40,42,44,47,49）开：02错
250期：←24码→（01,02,05,06,09,10,15,18,19,22,25,26,27,28,29,30,34,37,38,39,41,45,47,49）开：04错
251期：←24码→（04,05,06,07,09,10,12,13,14,18,19,21,23,24,28,30,33,35,40,41,43,44,47,49）开：41准
252期：←24码→（04,05,07,10,11,13,16,18,19,20,21,27,28,30,32,33,34,35,37,39,43,44,45,46）开：？？