309期：03,04,05,06,07,08,09,10,11,13,14,19,21,22,23,24,27,28,29,31,34,35,36,39,40,42,48,49··（共半数）开06准
310期：03,04,05,07,10,11,17,18,20,21,22,23,24,28,30,31,33,34,38,39,40,41,42,44,45,46,48,49··（共半数）开16错
311期：01,02,03,04,10,11,14,16,18,20,22,23,25,26,28,30,31,32,33,34,36,38,41,43,44,47,48,49··（共半数）开37错
312期：03,04,05,06,07,09,10,13,15,17,18,19,24,25,26,27,28,29,32,33,34,36,38,40,42,45,47,49··（共半数）开？？！