278期：23,17,39,11,04,07,08,19,20,24,26,28,33,34,38,47,49,05,06,10,12,15,29,30,41,（共25个）（主前）开28中
279期：42,37,15,49,41,14,19,31,13,47,10,30,02,03,06,07,08,17,18,21,23,32,44,46,48,（共25个）（主前）不中
280期：26,17,14,30,31,05,32,35,08,22,23,25,33,45,02,03,10,11,20,37,39,40,42,44,48,（共25个）（主前）开42中
281期：10,03,36,29,44,41,05,07,12,14,17,18,19,20,22,24,34,01,04,09,13,25,37,45,49,（共25个）（主前）中中？？
