310期:16码≤≤02,04,09,10,14,15,16,18,19,25,26,30,31,32,34,42≥≥开:19对
311期:16码≤≤01,02,03,07,11,12,14,22,23,25,28,35,40,44,46,47≥≥开:47对
312期:16码≤≤03,04,07,09,10,11,19,21,23,29,30,33,42,44,47,48≥≥开:47对
313期:16码≤≤01,04,09,10,14,15,21,28,31,33,34,35,40,43,48,49≥≥开://