316期：05,08,09,10,11,13,15,17,18,20,23,24,25,28,30,31,32,34,36,38,42,45,47,49··（共半数）开24准
317期：02,04,05,06,07,09,13,14,15,16,17,19,21,23,24,26,35,37,38,39,43,46,48,49··（共半数）开18错
318期：05,06,09,12,15,17,18,19,24,25,26,27,31,32,33,34,37,39,40,44,46,47,48,49··（共半数）开06准
319期：01,02,03,05,06,07,08,12,13,14,15,19,20,23,24,26,29,35,36,37,38,45,47,49··（共半数）开45准
320期：01,03,04,09,11,12,17,18,19,20,21,22,23,29,31,32,33,35,37,41,43,45,48,49··（共半数）开28错
321期：01,05,06,11,13,14,15,16,17,19,20,21,25,26,31,33,34,39,40,42,45,46,48,49··（共半数）开？？！