021期：01,02,04,07,08,09,10,11,13,14,17,18,19,21,22,25,26,28,29,31,32,33,34,35,40,42,43,44,46,47,（共30个）
020期：02,04,05,06,07,09,12,14,16,17,18,20,21,23,24,25,26,28,29,32,33,36,37,39,42,43,45,46,47,48,（共30个） t 05