020期：必中24码（01,04,06,07,09,11,12,13,14,16,18,20,23,29,30,31,33,35,36,42,44,46,47,48）开：33中
021期：必中24码（01,03,04,07,10,13,14,16,17,20,21,23,25,27,30,31,32,34,38,40,41,47,48,49）开：12错
022期：必中24码（02,06,09,10,11,12,14,15,19,25,31,32,34,35,37,38,39,40,41,42,43,44,45,49）开：34中
023期：必中24码（03,05,06,07,10,14,15,16,17,20,21,27,28,29,30,33,34,37,38,40,41,42,43,47）开：00