# type topo
# cell     3.900100     3.900100     1.659100    90.000000    90.000000   120.000000
18
  1 o      0.916524    0.289797    0.691347   0                             6/13      8/10     11/10     12/13     13/13     13/12 
  2 o      3.190867    0.648834    0.691347   0                             4/13      9/22     10/10     12/22     14/13     14/12 
  3 o      1.742760    2.438955    0.691347   0                             5/13      7/13     10/13     11/22     15/13     15/12 
  4 o      2.866574    1.415659    1.244380   0                             2/13      9/23     14/13     15/13     16/23     16/22 
  5 o      1.240817    1.774696    1.244380   0                             3/13      7/14     13/13     15/13     17/14     17/13 
  6 o      1.742760    0.187231    1.244380   0                             1/13      8/11     13/13     14/13     18/11     18/10 
  7 o      0.916523    2.541521    0.138314   0                             3/13      5/12     10/13     10/12     17/13     18/13 
  8 o     -0.709233    2.900558    0.138314   0                             1/16      6/15     11/13     11/12     16/13     18/13 
  9 o     -0.207290    1.313093    0.138314   0                              2/4       4/3     12/13     12/12     16/13     17/13 
 10 o      1.033527    3.087789    0.967753   0                             2/16      3/13      7/13      7/14     14/16     18/13 
 11 o     -1.240817    2.728751    0.967753   0                             1/16       3/4      8/13      8/14      15/4     16/13 
 12 o      0.207290    0.938631    0.967753   0                             1/13       2/4      9/13      9/14     13/13     17/13 
 13 o      1.033527    0.836065    1.520786   0                             1/13      1/14      5/13      6/13     12/13     17/14 
 14 o      2.659283    0.477028    1.520786   0                             2/13      2/14      4/13      6/13     10/10     18/11 
 15 o      2.157340    2.064493    1.520786   0                             3/13      3/14      4/13      5/13     11/22     16/23 
 16 o     -0.916524    1.961927    0.414720   0                              4/3       4/4      8/13      9/13     11/13      15/3 
 17 o      0.709233    1.602890    0.414720   0                             5/12      5/13      7/13      9/13     12/13     13/12 
 18 o      0.207290    3.190355    0.414720   0                             6/15      6/16      7/13      8/13     10/13     14/15