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：24对
253期：→№←【02,03,04,06,07,09,14,15,16,17,18,19,20,22,25,27,30,32,35,40,45,46,48,49】开：19对
254期：→№←【01,07,08,10,12,13,15,20,21,22,23,26,30,31,33,36,38,39,40,41,42,44,45,48】开：13对
255期：→№←【02,03,04,07,09,11,14,15,16,17,22,27,30,33,34,35,37,38,39,41,42,44,47,48】开：33对
256期：→№←【01,03,04,05,07,08,09,13,15,17,20,21,23,24,28,32,34,36,39,41,46,47,48,49】开：35错
257期：→№←【01,02,03,04,06,11,15,17,20,21,24,26,28,30,31,36,37,38,39,40,42,45,48,49】开：**