320期：<<01,02,04,15,19,20,21,28,30,31,33,36,40,42,48,49>>开：28中中中
321期：<<01,02,03,04,05,06,13,14,16,18,20,28,37,38,43,45>>开：23错错错
322期：<<04,08,09,12,15,18,20,21,26,28,29,35,36,37,39,41>>开：47错错错
323期：<<03,04,08,11,12,15,20,21,27,31,36,37,40,42,46,49>>开：中？