# type topo
# cell     3.254900     3.254900     1.955600    90.000000    90.000000   120.000000
18
  1 v      1.522642    0.000000    0.488900   0                             6/10      8/12     10/13     10/12     14/10     15/10     17/13     18/13 
  2 v     -0.761321    1.318647    0.488900   0                             4/13       9/3     11/13     11/12     13/13     15/13      16/4      18/4 
  3 v      0.866129    1.500179    0.488900   0                             5/13      7/12     12/13     12/12     13/13     14/13     16/13     17/13 
  4 v     -0.104808    0.939609    1.140767   0                             2/13       9/4     11/13     12/13     13/13     13/14     17/13      18/4 
  5 v      0.866129    2.258256    1.140767   0                             3/13      7/13     10/16     12/13     14/13     14/14     16/13     18/16 
  6 v     -0.761321    2.439788    1.140767   0                             1/16      8/16     10/16     11/13     15/13     15/14      16/4     17/16 
  7 v      1.522642    1.879217    1.792633   0                             3/14      5/13     11/22     12/13     14/14     15/23     16/13     16/14 
  8 v      0.866129    0.379038    1.792633   0                             1/14      6/10     10/13     12/13     13/14     15/11     17/14     17/13 
  9 v      2.493579    0.560571    1.792633   0                             2/23      4/22     10/13     11/22     13/23     14/11     18/14     18/13 
 10 v      1.732258    0.000000    1.466700   0                             1/13      1/14      5/10      6/10      8/13      9/13     14/11     18/13 
 11 v     -0.866129    1.500179    1.466700   0                             2/13      2/14      4/13      6/13       7/4       9/4     15/14      16/4 
 12 v      0.761321    1.318647    1.466700   0                             3/13      3/14      4/13      5/13      7/13      8/13     13/14     17/13 
 13 v      0.104808    0.939609    0.162967   0                             2/13      3/13      4/13      4/12      8/12       9/3     12/12     17/13 
 14 v      0.761321    2.439788    0.162967   0                             1/16      3/13      5/13      5/12      7/12      9/15     10/15     18/16 
 15 v     -0.866129    2.258256    0.162967   0                             1/16      2/13      6/13      6/12       7/3      8/15     11/12      16/4 
 16 v      1.732258    1.879217    0.814833   0                             2/22      3/13      5/13      6/22      7/13      7/12     11/22     15/22 
 17 v      0.761321    0.560571    0.814833   0                             1/13      3/13      4/13      6/10      8/12      8/13     12/13     13/13 
 18 v      2.388771    0.379038    0.814833   0                             1/13      2/22      4/22      5/10      9/12      9/13     10/13     14/10