028期：大围：01,02,05,09,12,17,20,22,23,24,27,28,29,31,35,37,38,39,42,43,46,47,48,49（共半数）开05准
029期：大围：03,04,05,07,08,09,10,11,12,16,18,19,20,24,28,30,31,32,34,39,40,43,44,48（共半数）开17错
030期：大围：01,02,05,06,08,10,11,13,14,18,19,21,24,26,27,30,31,32,33,35,39,42,44,49（共半数）开46错
031期：大围：01,02,03,05,07,10,11,12,16,19,20,23,28,31,32,33,34,36,39,40,41,43,48,49（共半数）开？？√【？中？】