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：//