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