# type topo
# cell     3.876100     3.876100     1.277400    90.000000    90.000000   120.000000
18
  1 o      0.769406    0.000000    0.319350   0                             6/13       8/9      11/9     11/10     12/13     12/12 
  2 o     -0.384703    0.666325    0.319350   0                              4/4      9/12      10/4      10/3     12/13     12/12 
  3 o      1.553347    2.690476    0.319350   0                             5/13      7/12     10/16     10/15     11/22     11/21 
  4 o      2.707456    1.118934    0.745150   0                             2/22      9/22     14/13     14/14     15/13     15/14 
  5 o      1.553347    1.785259    0.745150   0                             3/13      7/13     13/13     13/14     15/13     15/14 
  6 o      1.553347    0.452609    0.745150   0                             1/13      8/10     13/13     13/14     14/13     14/14 
  7 o      0.769406    2.237867    1.170950   0                             3/14      5/13     17/14     17/13     18/13     18/14 
  8 o     -0.384703    2.904192    1.170950   0                             1/17      6/16     16/14     16/13     18/14     18/13 
  9 o     -0.384703    1.571542    1.170950   0                             2/14       4/4     16/14     16/13     17/13     17/14 
 10 o      3.106694    0.000000    0.958050   0                             2/22      2/23      3/10      3/11     14/14     18/10 
 11 o     -1.553347    2.690476    0.958050   0                             1/17      1/16       3/4       3/5      15/5     16/13 
 12 o      0.384703    0.666325    0.958050   0                             1/13      1/14      2/13      2/14     13/14     17/13 
 13 o      1.168644    1.118934    0.106450   0                             5/13      5/12      6/13      6/12     12/12     17/13 
 14 o      2.322753    0.452609    0.106450   0                             4/13      4/12      6/13      6/12     10/12     18/10 
 15 o      2.322753    1.785259    0.106450   0                             4/13      4/12      5/13      5/12     11/21     16/22 
 16 o     -0.769406    2.237867    0.532250   0                             8/12      8/13      9/12      9/13     11/13      15/4 
 17 o      0.384703    1.571542    0.532250   0                             7/12      7/13      9/13      9/12     12/13     13/13 
 18 o      0.384703    2.904192    0.532250   0                             7/13      7/12      8/12      8/13     10/16     14/16