264期半数<<03,04,05,06,08,09,10,11,15,17,19,20,22,23,28,29,30,32,34,35,38,40,41,43,45,46,47,49>>】开43准
265期半数<<01,02,04,07,09,12,13,14,15,16,17,18,20,23,24,25,26,27,29,31,32,36,37,38,43,45,47,48>>】开10错
266期半数<<04,05,06,08,09,11,13,14,15,17,20,21,23,29,30,32,33,34,35,37,38,39,41,42,43,44,45,49>>】开41准
267期半数<<02,03,04,05,08,09,10,14,15,19,21,23,26,28,29,30,32,33,34,35,36,37,38,39,40,41,43,45>>】开29准
268期半数<<02,06,09,10,12,14,15,16,17,18,19,22,24,27,28,29,30,31,32,34,38,40,42,44,45,47,48,49>>】开10准
269期半数<<04,07,08,09,10,13,14,15,16,17,18,22,28,29,30,31,32,34,35,36,38,39,41,42,43,44,45,49>>】开？？