277期：≌【24】≌《01,02,04,06,07,09,11,12,15,17,19,23,24,26,27,31,34,35,40,42,45,47,48,49》开：48对
278期：≌【24】≌《04,05,06,07,08,13,14,16,23,27,28,29,31,33,35,36,38,39,41,42,43,45,47,49》开：22错
279期：≌【24】≌《01,05,06,08,10,15,16,18,20,22,24,26,28,31,32,33,34,37,39,42,43,44,46,47》开：27错
280期：≌【24】≌《04,06,08,09,13,14,17,20,21,23,26,29,30,32,34,35,37,38,40,42,43,44,45,47》开：//