278期：（（02,05,07,09,15,17,19,26,29,31,33,35,43,44,48,49））开：35中中中
279期：（（01,05,06,10,18,20,21,22,30,33,34,35,39,40,41,45））开：22中中中
280期：（（01,04,06,11,15,21,23,34,35,36,38,41,42,44,48,49））开：08错错错
281期：（（06,10,11,13,15,17,18,21,22,26,27,34,37,39,44,47））开：17中中中
282期：（（06,08,10,13,17,23,28,30,31,34,37,40,42,43,46,48））开：30中中中
283期：（（07,08,12,13,15,16,26,29,30,32,40,41,42,43,48,49））开：39错错错
284期：（（03,05,07,08,11,12,18,20,21,28,30,35,40,43,44,47））开：中？
