252期：16码≤≤02,03,05,06,07,09,18,19,20,22,29,30,36,47,48,49≥≥开：22对
253期：16码≤≤03,09,10,11,16,17,19,23,28,29,32,36,39,42,44,45≥≥开：16对
254期：16码≤≤01,04,07,09,10,19,25,36,39,40,42,43,44,45,48,49≥≥开：02错
255期：16码≤≤02,04,05,10,14,15,16,17,25,27,36,39,44,47,48,49≥≥开：44对
256期：16码≤≤02,05,06,09,10,16,18,23,25,26,30,33,35,38,45,48≥≥开：01错
257期：16码≤≤06,08,09,11,15,20,23,30,33,35,36,37,40,41,44,46≥≥开：//