# type topo
# cell     2.499900     2.499900     3.873500    90.000000    90.000000   120.000000
15
  1 n      0.000000    0.000000    0.000000   0                             4/13       5/1      6/13 
  2 n      1.249950    0.721659    1.291167   0                             7/13      8/10      9/22 
  3 n     -0.000000    1.443318    2.582333   0                            10/16      11/4     12/13 
  4 n     -0.499980    0.865991    0.000000   1                             1/13      14/3     15/13 
  5 n      0.749970    1.298986    0.000000   1                             1/25     14/12     15/13 
  6 n      0.999960    0.000000    0.000000   1                             1/13     14/12     15/10 
  7 n      0.749970    1.587650    1.291167   1                             2/13     13/25     15/13 
  8 n     -0.499980    2.020645    1.291167   1                             2/16     13/16     15/13 
  9 n     -0.249990    0.721659    1.291167   1                              2/4     13/13     15/13 
 10 n      0.749970    0.144332    2.582333   1                             3/10     13/13     14/13 
 11 n      1.999920    0.577327    2.582333   1                             3/22     13/22     14/13 
 12 n      0.999960    1.443318    2.582333   1                             3/13     13/25     14/13 
 13 o      0.000000    0.000000    1.936750   2                              7/1      8/10      9/13     10/13      11/4      12/1 
 14 o      1.249950    0.721659    3.227917   2                             4/23      5/14      6/14     10/13     11/13     12/13 
 15 o     -0.000000    1.443318    0.645583   2                             4/13      5/13      6/16      7/13      8/13      9/13