168期特围（{02,04,06,10,11,13,14,15,16,17,19,21,22,24,25,31,33,36,40,41,42,45,46,49}）开15准
169期特围（{05,06,07,08,09,11,12,13,14,15,16,20,21,24,27,31,35,36,38,42,43,44,45,48}）开24准
170期特围（{01,06,07,14,15,16,18,19,20,21,22,23,27,28,31,32,35,36,37,40,42,44,47,49}）开？中