255期：（（02,04,05,08,11,16,20,32,33,34,38,40,41,42,48,49））开：33中中中
256期：（（01,08,12,13,14,18,21,25,29,32,34,35,36,38,41,44））开：35中中中
257期：（（06,09,10,15,16,18,20,22,24,27,32,35,36,37,45,48））开：48中中中
258期：（（07,08,11,13,15,17,20,27,28,29,31,34,38,39,44,45））开：中？