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