247期：24码→【03,05,06,07,08,10,11,16,18,19,24,27,28,30,31,32,33,36,39,40,42,45,46,48】开：40准
248期：24码→【03,04,07,08,11,12,16,18,20,22,25,26,29,30,31,33,34,37,38,40,41,43,47,48】开：20准
249期：24码→【01,02,04,08,12,17,18,21,22,24,27,29,30,31,32,34,35,36,38,41,43,44,46,49】开：23错
250期：24码→【02,04,07,08,09,10,13,16,18,19,22,23,24,25,28,31,32,33,37,40,42,45,47,49】开：14错
251期：24码→【03,05,06,07,08,10,11,13,14,15,16,18,19,21,26,29,30,34,36,41,44,46,48,49】开：？？