020期：〓(01,03,06,07,09,10,14,15,19,20,21,24,25,27,29,30,32,34,36,42,43,45,46,49)〓→开:10准
021期：〓(03,04,07,08,09,10,11,13,14,15,20,21,22,23,24,25,26,31,32,40,42,45,46,49)〓→开:07准
022期：〓(01,02,03,04,06,10,11,12,13,14,18,19,23,24,25,29,30,37,38,40,41,42,44,47)〓→开:18准
023期：〓(09,11,12,16,21,22,23,24,25,26,27,28,33,35,36,38,39,40,41,42,43,44,45,47)〓→开:01错
024期：〓(01,02,03,05,09,11,12,13,15,17,18,19,20,22,25,28,32,33,34,36,38,40,46,49)〓→开:32准
025期：〓(01,02,03,05,06,09,12,14,19,21,22,23,24,27,29,31,33,34,35,36,37,43,46,48)〓→开:47错
026期：〓(03,04,10,11,13,14,16,17,19,20,21,24,26,29,31,32,36,37,38,42,45,46,47,48)〓→开:46准
027期：〓(01,02,05,06,07,09,10,12,13,18,19,22,23,24,25,30,35,36,37,41,42,46,47,49)〓→开:??←