# type topo
# cell     3.204700     3.204700     1.767700    90.000000    90.000000    90.000000
16
  1 o      0.664334    0.233943    0.045253   0                              3/9       4/3      5/10       5/9      7/13     16/12 
  2 o      2.540366    2.970757    0.045253   0                             3/21      4/15      6/16      6/15      8/13     15/12 
  3 o      0.233943    2.540366    1.722447   0                             1/17       2/5      5/13       8/5       8/4     14/14 
  4 o      2.970757    0.664334    1.722447   0                             1/23      2/11      6/13      7/23      7/22     13/14 
  5 o      0.664334    2.970757    0.929103   0                             1/16      1/17      3/13      7/16       8/4     12/13 
  6 o      2.540366    0.233943    0.929103   0                             2/10      2/11      4/13      7/22      8/10     11/13 
  7 o      0.233943    0.664334    0.838597   0                             1/13       4/3       4/4      5/10       6/4     10/13 
  8 o      2.970757    2.540366    0.838597   0                             2/13      3/21      3/22      5/22      6/16      9/13 
  9 o      2.266684    1.836293    0.929103   0                             8/13     11/13     12/13     13/13     13/14     15/13 
 10 o      0.938016    1.368407    0.929103   0                             7/13     11/13     12/13     14/13     14/14     16/13 
 11 o      1.836293    0.938016    0.838597   0                             6/13      9/13     10/13     13/13     16/12     16/13 
 12 o      1.368407    2.266684    0.838597   0                             5/13      9/13     10/13     14/13     15/12     15/13 
 13 o      2.266684    1.368407    0.045253   0                             4/12      9/13      9/12     11/13     15/12     16/12 
 14 o      0.938016    1.836293    0.045253   0                             3/12     10/13     10/12     12/13     15/12     16/12 
 15 o      1.836293    2.266684    1.722447   0                             2/14      9/13     12/14     12/13     13/14     14/14 
 16 o      1.368407    0.938016    1.722447   0                             1/14     10/13     11/14     11/13     13/14     14/14