280期：→№←【01,02,04,06,07,09,10,11,15,17,18,19,21,22,23,26,27,28,31,33,38,43,48,49】开：07对
281期：→№←【03,08,09,11,12,14,18,20,24,25,26,27,28,30,34,35,36,37,39,40,45,47,48,49】开：24对
282期：→№←【02,03,07,08,10,12,13,14,18,21,23,28,29,30,31,37,39,40,41,42,43,44,46,49】开：37对
283期：→№←【01,05,06,08,10,12,15,18,19,21,22,25,26,35,37,39,40,41,42,44,46,47,48,49】开：10对
284期：→№←【01,02,08,09,11,13,14,15,16,21,22,23,26,29,30,31,33,35,36,40,41,44,45,49】开：11对
285期：→№←【02,06,08,10,11,13,15,16,23,24,26,27,28,31,36,37,41,42,43,44,45,46,47,48】开：34错
286期：→№←【04,05,07,08,11,12,13,14,16,18,20,21,24,26,27,28,29,33,38,40,42,45,47,48】开：01错
287期：→№←【01,03,04,05,08,09,10,11,12,18,19,21,24,25,31,33,36,39,40,41,43,45,48,49】开：**