237期====01,04,10,12,13,17,19,20,21,25,26,27,30,31,32,33,38,39,42,43,45,47,48,49··(共半数) 中:12准
238期====01,04,05,06,07,08,11,14,18,19,20,21,22,24,26,27,29,30,31,36,40,45,47,49··(共半数) 中:17错
239期====01,05,07,10,13,16,18,23,24,26,27,28,31,35,36,40,41,42,44,45,46,47,48,49··(共半数) 中:05准
240期====03,06,08,10,12,13,14,17,18,21,22,23,24,25,27,28,29,31,36,40,41,43,46,48··(共半数) 中:?