018期：必中24码（02,03,04,05,09,11,13,16,18,22,23,24,26,27,28,30,31,32,33,39,41,43,47,48）开：31中
019期：必中24码（01,02,03,05,09,12,13,14,15,16,19,21,24,26,28,33,34,35,37,38,42,44,46,47）开：40错
020期：必中24码（02,03,04,05,13,15,17,21,23,24,26,28,29,34,35,38,39,42,43,44,45,46,47,49）开：10错
021期：必中24码（01,02,04,05,06,09,10,13,14,15,17,18,22,24,26,30,31,34,35,36,38,39,40,48）开：00
