317期：02,03,04,05,08,09,10,12,13,14,15,16,18,20,21,24,28,30,32,33,37,39,43,44,45,47,48,49··（共半数）开24准
318期：01,03,04,06,07,09,11,13,15,16,17,18,19,22,23,30,31,32,34,35,37,38,39,41,45,46,48,49··（共半数）开08错
319期：01,02,04,08,09,16,17,18,19,21,24,26,27,28,29,30,32,34,35,36,38,40,41,42,44,46,47,49··（共半数）开05错
320期：02,07,09,10,11,12,13,15,17,18,23,24,25,26,27,28,29,30,31,32,36,40,41,42,43,45,46,48··（共半数）开42准
321期：06,08,09,10,11,12,13,15,16,18,20,21,23,24,25,28,31,33,34,36,37,39,40,41,43,44,45,46··（共半数）开？？！