020期：24码→03,05,09,10,13,14,16,17,18,23,24,26,27,31,33,35,36,37,38,39,40,41,42,43←开：16中
021期：24码→01,02,03,05,08,12,14,17,18,20,21,22,26,32,34,35,36,38,41,42,44,46,47,49←开：39错
022期：24码→01,02,04,05,07,08,09,10,12,14,15,18,22,24,27,32,36,38,39,41,42,43,46,48←开：40错
023期：24码→01,02,03,04,06,08,10,14,16,19,20,21,22,23,28,30,32,33,36,40,41,43,46,48←开：？？