017期：→№←【01,04,06,07,09,10,11,13,15,17,19,20,24,34,36,38,40,41,42,43,45,46,48,49】开：40对
018期：→№←【02,03,05,06,07,08,09,10,14,15,17,19,20,21,25,28,30,31,32,34,43,46,47,48】开：10对
019期：→№←【03,04,06,07,09,11,13,14,16,17,21,22,24,27,29,31,36,38,40,42,43,45,47,49】开：04对
020期：→№←【03,04,06,08,10,13,14,16,17,20,21,22,24,28,30,34,35,37,41,42,43,44,46,48】开：33错
021期：→№←【01,03,07,08,13,14,15,18,20,21,22,23,27,30,31,32,33,34,35,36,38,40,46,48】开：**