021期：←24码→（01,04,07,10,12,14,15,16,20,21,22,25,26,28,31,32,33,34,35,37,38,45,46,47）开：12准
022期：←24码→（04,07,08,09,12,14,15,18,20,21,22,23,27,31,33,34,38,41,42,43,44,45,46,47）开：34准
023期：←24码→（06,08,09,11,13,14,15,16,20,22,23,27,28,29,31,32,39,40,41,43,44,45,47,49）开：？？