225期：02,03,04,05,06,08,10,15,17,19,21,23,25,28,29,30,32,36,37,39,41,43,44,47··（共半数）开05准
226期：01,06,07,08,09,10,11,12,13,14,15,19,24,25,31,32,36,39,40,42,43,45,46,48··（共半数）开34错
227期：04,06,09,10,15,17,18,21,23,24,25,28,31,32,33,35,37,38,39,41,43,45,46,48··（共半数）开20错
228期：01,02,05,06,07,09,11,12,13,14,15,16,17,19,20,24,25,31,36,37,39,41,45,46··（共半数）开？？！