256期：大围：01,02,04,08,09,10,12,13,16,17,20,27,29,30,31,32,33,38,39,44,45,46,47,48（共半数）开39准
257期：大围：01,04,07,09,12,13,14,15,16,18,19,23,26,28,29,32,33,34,35,37,39,40,42,48（共半数）开08错
258期：大围：03,07,09,11,12,13,15,18,19,20,23,24,26,29,30,31,32,34,36,37,39,45,46,48（共半数）开40错
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？？√【？中？】