268期：←24码→（01,04,05,06,08,10,11,12,13,14,15,18,20,22,26,28,32,37,39,41,45,46,47,49）开：10准
269期：←24码→（03,04,06,12,13,15,16,17,20,21,22,23,25,26,27,28,29,30,32,38,44,47,48,49）开：31错
270期：←24码→（02,06,08,11,12,13,15,16,17,20,21,23,26,28,30,31,32,33,36,38,39,42,48,49）开：？？