218期:01,04,05,06,07,09,12,13,14,16,19,22,24,28,30,34,37,38,40,42,43,44,45,47··(共半数)开37准
219期:01,02,04,06,08,09,11,12,15,20,21,24,25,31,33,34,35,36,39,40,41,43,45,47··(共半数)开14错
220期:03,04,05,06,07,08,10,13,15,16,17,25,26,29,30,32,33,35,37,41,42,43,45,47··(共半数)开21错
221期:03,06,07,08,12,13,14,15,17,22,23,26,28,30,31,32,33,35,36,39,40,41,45,49··(共半数)开??!