217期:半数【《02,04,05,06,07,11,12,13,14,18,19,20,22,23,28,31,34,36,37,40,42,43,46,48》】开:34准
218期:半数【《02,03,04,07,10,12,15,16,18,20,21,22,23,24,26,27,28,30,35,41,42,44,46,47》】开:41准
219期:半数【《01,06,08,09,15,17,18,19,20,21,23,25,28,30,34,35,39,40,41,42,43,47,48,49》】开:25准
220期:半数【《01,02,03,07,09,11,12,15,19,20,21,25,26,27,29,30,34,35,43,44,45,46,47,48》】开:？？？？