247期：←二十八码←《《《→→→01,02,03,05,06,07,08,09,10,11,12,13,14,19,20,22,24,25,27,30,32,33,34,39,40,43,46,48←←←》》》开：27准
248期：←二十八码←《《《→→→01,04,06,11,12,15,16,17,18,19,20,21,23,24,25,26,27,28,29,30,33,34,35,40,44,46,47,49←←←》》》开：03错
249期：←二十八码←《《《→→→02,04,10,11,12,14,15,17,18,19,25,28,30,31,32,33,34,37,38,39,41,42,43,44,45,47,48,49←←←》》》开：？