259期:大围:01,05,06,07,09,11,13,14,18,19,20,22,23,26,27,29,36,37,39,40,42,43,46,49(共半数)开29准
260期:大围:02,06,07,08,11,12,13,15,16,17,18,19,21,23,27,28,31,36,37,39,41,43,48,49(共半数)开40错
261期:大围:01,02,03,04,07,09,11,13,14,15,18,20,22,23,31,32,34,39,42,44,45,47,48,49(共半数)开01准
262期:大围:02,03,04,05,06,10,12,14,15,17,19,20,23,26,27,29,30,31,32,36,37,38,46,47(共半数)开44错
263期:大围:01,02,06,07,10,11,13,17,19,22,28,29,30,34,35,36,37,40,43,45,46,47,48,49(共半数)开??√【?中?】