274期:16码≤≤02,04,06,09,10,11,15,17,18,24,26,27,30,33,40,49≥≥开:24对
275期:16码≤≤02,07,09,10,13,14,17,21,22,23,25,26,27,29,41,46≥≥开:31错
276期:16码≤≤01,06,07,11,18,20,22,23,27,30,34,35,36,41,44,45≥≥开:01对
277期:16码≤≤04,05,08,09,13,14,16,17,18,23,26,30,33,35,38,46≥≥开:47错
278期:16码≤≤04,05,09,11,12,15,17,26,29,37,38,39,40,42,46,49≥≥开://