310期:≌【24】≌《02,03,04,08,09,10,12,13,15,18,22,25,27,30,36,38,40,41,42,43,45,46,47,48》开:04对
311期:≌【24】≌《01,03,04,06,07,08,09,12,14,16,21,22,23,26,27,29,30,31,33,35,42,43,46,47》开:21对
312期:≌【24】≌《01,03,07,10,11,14,15,17,18,23,24,27,29,31,34,36,37,39,42,43,44,46,48,49》开://