018期：24码→01,04,07,09,10,11,12,13,16,17,21,23,25,26,27,30,31,37,38,40,41,43,46,47←开：23中
019期：24码→01,02,04,08,09,10,11,12,13,15,19,22,25,26,28,30,31,33,40,41,43,45,46,47←开：27错
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：？？