247期：→№←【04,05,07,08,09,11,12,13,15,17,20,21,26,27,28,29,31,32,37,39,40,43,46,49】开：29对
248期：→№←【01,02,04,05,06,09,11,14,19,22,23,25,26,28,31,32,34,35,37,39,42,43,45,46】开：15错
249期：→№←【01,03,05,06,09,11,14,19,20,23,25,26,28,30,31,32,33,37,38,39,40,42,43,45】开：02错
250期：→№←【01,04,05,11,14,16,18,19,21,24,25,26,28,29,30,31,33,35,39,41,44,46,47,48】开：04对
251期：→№←【01,05,06,07,08,12,13,14,15,17,18,19,20,21,23,26,27,33,35,39,40,41,42,46】开：41对
252期：→№←【05,08,09,10,13,14,15,16,17,21,24,25,26,27,31,37,38,39,41,42,43,45,46,48】开：**