272期：＜24码＞（02,04,06,08,12,13,16,17,18,19,22,23,24,25,31,32,36,37,38,39,40,45,47,48）开：36对
273期：＜24码＞（01,02,05,06,09,12,16,19,20,21,23,24,27,28,29,31,32,34,38,39,41,42,45,49）开：04错
274期：＜24码＞（03,05,06,07,08,09,10,11,16,17,19,20,21,24,30,31,34,35,36,39,41,43,44,49）开：44对
275期：＜24码＞（01,02,03,04,07,09,13,17,19,21,26,27,28,30,31,33,37,38,40,41,43,45,46,49）开：45对
276期：＜24码＞（01,04,06,07,11,12,13,14,17,19,21,24,25,26,28,34,37,38,40,41,44,47,48,49）开：09错
277期：＜24码＞（01,05,07,08,09,10,12,13,16,19,20,21,22,24,26,34,35,36,39,41,42,45,48,49）开：16对
278期：＜24码＞（02,04,07,08,09,10,12,14,15,17,19,25,27,31,32,34,36,37,39,44,45,47,48,49）开：00