186期:半数【《02,06,07,08,09,12,15,18,20,21,23,24,25,29,31,33,36,38,41,42,45,46,48,49》】开:23准
187期:半数【《02,05,06,09,10,12,13,14,15,16,18,21,26,28,29,30,33,35,36,41,42,43,46,48》】开:01错
188期:半数【《02,03,04,05,06,07,10,13,15,17,18,20,26,29,32,34,35,37,40,45,46,47,48,49》】开:16错
189期:半数【《02,03,07,08,10,12,17,20,23,24,25,26,27,32,33,34,37,40,42,43,45,47,48,49》】开:？？？？