274期半数<<01,03,04,05,07,08,11,16,17,19,20,21,23,24,26,27,29,30,32,33,34,36,39,41,42,45,47,48>>】开24准
275期半数<<01,03,04,07,08,10,11,14,15,16,18,20,21,22,23,24,25,26,27,30,31,33,34,35,38,43,45,46>>】开31准
276期半数<<02,05,06,07,08,09,10,12,16,17,18,20,22,23,26,27,28,29,30,31,33,38,39,41,44,47,48,49>>】开01错
277期半数<<01,04,06,07,10,12,13,14,18,19,20,21,24,25,28,29,33,36,37,38,39,40,41,43,46,47,48,49>>】开？？