306期：←24码→（02,03,05,06,09,12,13,14,15,18,19,20,21,22,23,27,30,31,32,36,37,39,44,47）开：31准
307期：←24码→（01,02,03,05,07,08,09,13,14,17,19,25,27,28,33,35,37,38,39,41,42,45,47,49）开：22错
308期：←24码→（01,02,06,10,12,13,14,15,18,19,21,25,27,29,31,33,35,36,39,40,42,43,47,48）开：？？