《173期》半数<<01,02,03,04,05,06,07,09,11,12,13,17,19,20,21,23,25,34,35,36,39,41,46,49>>】开49准
《174期》半数<<03,06,09,12,13,15,16,17,22,25,26,27,28,30,33,35,36,40,41,42,43,45,47,48>>】开48准
《175期》半数<<01,03,05,06,08,09,13,14,15,17,20,23,25,26,27,28,30,31,32,36,40,41,43,49>>】开40准
《176期》半数<<02,03,06,10,11,13,14,15,18,21,22,24,25,26,28,29,30,31,34,37,39,40,45,46>>】开？？