027期：（（02,09,10,17,22,24,26,29,30,35,36,40,41,45,47,49））开：49中中中
028期：（（02,04,08,10,11,13,14,19,20,22,29,34,37,38,40,45））开：34中中中
029期：（（03,07,08,10,13,15,17,19,20,25,32,34,38,43,44,48））开：13中中中
030期：（（03,08,09,17,18,19,23,25,26,27,30,31,38,39,47,48））开：48中中中
031期：（（02,03,05,10,12,13,15,18,22,23,24,27,31,34,36,49））开：中？