172期：→№←【01,02,04,06,07,09,11,14,15,16,17,22,23,25,27,28,31,35,36,42,43,44,47,48】开：44对
173期：→№←【04,06,07,10,12,16,18,19,20,21,22,23,24,26,27,29,31,33,40,42,43,46,47,49】开：26对
174期：→№←【01,02,05,06,07,08,09,11,14,19,20,24,25,27,30,33,36,37,38,41,43,45,47,49】开：**
