167期：02,03,05,10,15,18,19,20,21,22,25,26,28,31,33,35,36,37,38,40,41,44,48,49··（共半数）开38准
168期：01,02,05,06,07,09,10,11,15,16,17,18,19,20,21,24,26,35,38,40,42,44,47,48··（共半数）开11准
169期：05,07,08,09,10,11,12,13,14,17,18,19,23,24,25,28,29,30,32,34,36,40,41,49··（共半数）开33错
170期：01,02,03,05,07,08,12,15,16,20,21,22,25,26,29,30,33,34,35,39,45,46,47,48··（共半数）开10错
171期：01,02,04,05,06,07,11,17,18,20,21,22,24,28,30,31,32,34,35,37,38,43,47,49··（共半数）开？？！