248期：→№←【03,07,12,13,14,15,16,17,18,19,20,23,28,29,32,33,35,36,37,38,40,41,42,43】开：03对
249期：→№←【01,02,04,05,06,10,11,16,17,18,22,23,24,27,31,32,35,36,37,43,44,45,47,49】开：31对
250期：→№←【01,05,06,08,10,11,12,14,16,17,19,20,21,22,24,25,28,29,31,33,38,39,46,48】开：42错
251期：→№←【02,05,07,08,11,13,14,16,19,20,23,24,26,28,33,34,35,37,39,42,43,44,47,49】开：13对
252期：→№←【01,02,03,05,06,08,13,14,15,18,20,21,23,27,30,33,36,39,40,41,42,44,46,49】开：08对
253期：→№←【01,04,09,14,15,16,17,18,23,24,25,26,28,31,34,36,37,38,41,42,44,46,47,49】开：09对
254期：→№←【01,06,07,08,09,10,12,13,15,16,17,18,19,20,21,23,24,28,31,34,35,38,42,49】开：07对
255期：→№←【01,03,04,08,09,13,16,20,21,23,25,26,27,28,29,31,33,34,36,38,39,41,42,44】开：**