015期：《《01,04,05,07,09,15,22,23,24,29,32,36,42,45,46,49》》开：42√
016期：《《01,03,10,13,18,19,20,21,26,27,28,33,39,43,46,49》》开：12x
017期：《《01,03,04,12,14,15,16,21,22,23,27,28,31,43,45,48》》开：04√
018期：《《06,07,08,10,11,12,15,19,24,26,27,32,43,45,48,49》》开：31x
019期：《《01,02,08,11,13,22,23,28,29,30,38,39,40,43,45,49》》开：40√
020期：《《01,08,14,15,17,18,19,24,28,29,35,37,38,41,47,49》》开：中？