018期：→№←【01,06,07,08,09,10,15,16,18,20,22,23,24,26,29,33,34,36,37,42,45,46,47,49】开：23对
019期：→№←【01,02,03,04,05,08,12,15,16,20,21,22,24,25,26,33,37,42,43,44,46,47,48,49】开：27错
020期：→№←【03,05,07,10,12,13,16,18,23,24,28,29,30,31,33,34,35,36,41,43,44,45,48,49】开：16对
021期：→№←【01,02,03,06,07,09,11,15,17,19,20,21,22,23,27,28,29,30,31,32,41,43,46,49】开：39错
022期：→№←【03,04,05,06,07,12,13,15,20,21,22,23,27,29,30,31,32,33,36,38,41,42,46,48】开：**