272期：（（02,11,13,15,16,18,21,24,25,27,35,38,40,42,46,49））开：02中中中
273期：（（06,10,12,16,18,19,20,23,24,25,26,32,35,41,42,48））开：05错错错
274期：（（07,08,12,20,21,22,29,32,34,39,41,43,44,45,46,49））开：33错错错
275期：（（02,09,10,14,15,17,19,22,28,32,35,40,42,44,46,49））开：17中中中
276期：（（07,10,15,17,18,21,26,30,32,39,42,43,44,46,47,49））开：中？