020期：精算24码】≈01,02,04,06,07,08,10,12,17,22,23,24,26,28,29,30,31,33,34,37,39,42,47,48】开：12中
021期：精算24码】≈01,02,04,05,07,08,09,11,13,14,16,17,18,23,26,29,32,33,34,36,37,40,43,46】开：42错
022期：精算24码】≈04,05,08,09,11,13,14,16,18,21,22,23,27,28,29,30,32,33,34,38,41,43,45,47】开：18中
023期：精算24码】≈01,02,05,08,11,14,16,17,18,19,21,25,26,27,28,29,30,31,33,36,41,42,45,46】开：47错
024期：精算24码】≈02,04,06,07,08,10,11,12,15,16,21,23,29,30,31,33,35,36,39,40,41,42,44,49】开：//