281期：((02,08,09,10,17,21,22,23,25,26,35,37,38,41,47,49))开：17中中中
282期：((01,03,09,14,16,19,21,24,26,27,30,32,33,37,41,49))开：30中中中
283期：((01,05,08,09,11,13,15,17,28,30,31,36,37,45,46,47))开：39错错错
284期：((03,08,09,10,14,17,31,36,37,38,39,42,44,45,46,49))开：88