280期：大围：02,03,07,08,09,10,11,13,15,16,17,21,22,23,24,26,28,30,31,35,41,42,44,49（共半数）开08准
281期：大围：02,03,04,05,07,13,14,17,18,23,24,25,26,27,29,32,35,36,40,41,42,44,45,48（共半数）开17准
282期：大围：01,02,03,05,09,10,13,15,17,21,22,23,26,28,30,31,32,33,35,39,40,45,47,49（共半数）开30准
283期：大围：03,07,08,10,11,16,18,19,20,22,23,24,25,30,31,33,35,38,43,44,45,46,47,49（共半数）开39错
284期：大围：01,03,05,07,09,12,16,17,20,21,22,23,25,26,29,31,33,35,37,40,43,45,46,47（共半数）开17准
285期：大围：01,02,05,06,08,10,11,13,19,20,21,23,25,29,30,32,34,37,38,40,42,44,45,49（共半数）开33错
286期：大围：02,03,04,06,09,11,12,15,16,17,20,22,25,26,30,31,33,34,35,40,41,44,46,48（共半数）开？？√【？中？】