277期：＝24码＝【04,05,09,10,13,14,17,18,20,21,22,24,25,26,28,29,30,35,37,40,45,46,47,48】开：48中
278期：＝24码＝【01,02,03,04,05,06,07,09,11,12,16,19,24,26,28,31,32,33,36,37,38,39,45,49】开：22错
279期：＝24码＝【03,05,07,08,09,10,11,12,13,14,15,17,18,19,20,21,24,27,29,31,32,36,42,47】开：27中
280期：＝24码＝【02,04,07,08,09,11,13,14,15,16,19,20,23,27,29,31,34,36,41,42,43,45,46,48】开：07中
281期：＝24码＝【01,07,08,10,12,15,19,22,24,25,27,28,29,30,31,33,35,36,40,41,43,45,46,49】开：24中
282期：＝24码＝【03,04,05,06,08,10,13,16,17,18,19,20,21,24,27,29,31,35,37,39,40,43,44,48】开：37中
283期：＝24码＝【03,06,09,11,12,13,14,15,17,21,22,23,27,28,29,30,32,33,35,36,37,39,44,46】开：10错
284期：＝24码＝【01,02,05,06,07,13,14,16,19,20,23,25,27,31,32,35,36,40,41,42,46,47,48,49】开：？？