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：48对
313期：≌【24】≌《03,04,07,08,09,11,15,17,20,22,24,28,30,32,33,35,37,39,40,42,43,44,46,48》开：//