271期====01,03,04,05,08,09,13,14,16,17,18,19,20,21,22,24,25,26,27,34,35,37,38,39,40,44,47,48··（共半数） 中：26准
272期====02,04,05,07,09,10,11,12,13,14,15,16,17,18,20,21,23,27,28,31,34,35,39,41,43,44,46,49··（共半数） 中：23准
273期====01,02,03,04,06,08,10,11,15,16,18,20,22,26,28,29,31,32,33,36,37,38,39,40,41,44,45,48··（共半数） 中：05错
274期====01,02,03,04,07,11,12,18,23,25,27,29,30,31,32,34,35,36,37,40,41,42,43,44,46,47,48,49··（共半数） 中：24错
275期====03,04,05,06,08,12,15,16,19,20,22,23,24,25,27,31,32,33,34,35,36,38,39,42,44,47,48,49··（共半数） 中：？