231期:半数【《04,06,07,09,10,11,14,15,17,18,20,21,23,24,26,27,28,30,31,34,40,43,46,47》】开:20准
232期:半数【《02,04,08,14,16,18,22,24,25,28,29,30,31,32,34,36,37,39,40,41,45,46,48,49》】开:42错
233期:半数【《03,06,10,15,17,19,21,22,24,25,26,27,28,30,32,34,35,36,38,40,43,44,45,48》】开:？？？？