# type topo
# cell     2.449500     2.449500     2.449500    90.000000    90.000000    90.000000
16
  1 v      0.000000    0.000000    1.224750   0                              6/1       7/4      8/10      5/13      10/1     11/10       9/4     12/13 
  2 v      1.224750    0.000000    0.000000   0                             9/13      10/9     12/12     11/10      14/9     13/10     15/12     16/13 
  3 v      0.000000    1.224750    0.000000   0                             14/3     13/13      16/4       7/4     15/12      5/12       6/3      8/13 
  4 x12    1.224750    1.224750    1.224750   1                             5/13      9/13     11/13     13/13     15/13      6/13      7/13      8/13     10/13     12/13     16/13     14/13 
  5 n      0.408332    0.816418    1.633082   2                             1/13      3/14      4/13 
  6 n      2.041168    1.633082    1.633082   2                             1/25      3/23      4/13 
  7 n      2.041168    0.816418    0.816418   2                             1/22      3/22      4/13 
  8 n      0.408332    1.633082    0.816418   2                             1/16      3/13      4/13 
  9 n      1.633082    0.408332    0.816418   2                             1/22      2/13      4/13 
 10 n      1.633082    2.041168    1.633082   2                             1/25      2/17      4/13 
 11 n      0.816418    2.041168    0.816418   2                             1/16      2/16      4/13 
 12 n      0.816418    0.408332    1.633082   2                             1/13      2/14      4/13 
 13 n      0.816418    1.633082    0.408332   2                             2/16      3/13      4/13 
 14 n      1.633082    1.633082    2.041168   2                             2/17      3/23      4/13 
 15 n      0.816418    0.816418    2.041168   2                             2/14      3/14      4/13 
 16 n      1.633082    0.816418    0.408332   2                             2/13      3/22      4/13