216期：01,05,06,07,10,11,12,13,14,16,17,18,19,20,21,23,25,30,31,35,42,44,45,46··（共半数）开10准
217期：03,04,07,08,10,12,14,17,19,22,32,33,34,36,37,38,40,41,42,43,44,45,48,49··（共半数）开18错
218期：04,05,07,08,11,13,14,16,17,20,21,22,28,29,31,34,40,41,42,43,45,46,47,49··（共半数）开41准
219期：03,04,05,06,07,09,10,12,14,15,17,25,26,31,32,33,34,37,38,39,41,42,47,48··（共半数）开03准
220期：01,02,04,05,06,07,10,13,15,16,17,18,19,21,24,25,26,27,29,34,39,42,44,45··（共半数）开？？！