247期：≌【24】≌《02,04,05,10,13,14,21,22,25,26,27,28,31,34,36,37,40,41,42,44,45,46,48,49》开：25对
248期：≌【24】≌《02,04,06,08,10,12,15,16,17,19,21,22,23,25,26,27,29,30,33,38,41,44,45,46》开：12对
249期：≌【24】≌《01,03,04,07,08,10,11,12,13,14,16,18,22,28,29,30,31,32,33,38,42,45,46,48》开：02错
250期：≌【24】≌《02,04,05,08,10,12,17,19,21,22,24,25,29,30,32,35,36,39,40,41,42,44,46,47》开：12对
251期：≌【24】≌《04,07,10,13,15,17,18,19,21,22,24,26,28,30,31,33,34,38,39,41,43,44,47,49》开：35错
252期：≌【24】≌《04,05,06,07,08,09,12,15,16,17,19,20,23,25,28,31,32,34,35,38,39,40,48,49》开：23对
253期：≌【24】≌《01,02,04,05,06,09,12,13,14,16,18,19,21,25,30,34,38,39,41,43,44,46,47,49》开：//