297期：→№←【02,03,05,10,11,12,13,14,15,16,21,25,26,28,29,33,35,37,41,42,44,46,47,49】开：49对
298期：→№←【01,03,04,05,13,14,16,17,23,24,25,26,30,31,35,36,38,39,41,42,43,46,47,49】开：44错
299期：→№←【01,05,07,09,10,11,12,13,15,18,20,24,25,27,29,30,31,33,39,41,43,44,46,49】开：21错
300期：→№←【02,03,04,05,06,07,08,09,14,16,17,18,21,24,27,28,30,32,35,36,39,44,46,48】开：**
