# type topo
# cell     2.426100     2.426100     3.949500    90.000000    90.000000   120.000000
18
  1 o      0.570134    0.091186    1.084533   0                              2/4       3/1     13/13     16/10     17/13     18/10 
  2 o      2.062064    0.448157    1.084533   0                             1/22      3/10     14/13     16/22     17/22     18/10 
  3 o      1.006953    1.561721    1.084533   0                             1/25      2/16     15/13     16/22     17/13     18/13 
  4 o      1.783184    0.791541    2.401033   0                             5/13      6/13     10/10     11/22     12/22     16/22 
  5 o      0.849014    1.148512    2.401033   0                             4/13      6/13     10/13     11/22     12/13     17/13 
  6 o      1.006953    0.161012    2.401033   0                             4/13      5/13     10/10     11/10     12/13     18/10 
  7 o      0.570133    1.491896    3.717533   0                             8/13      9/13     10/13     13/14     14/17     15/14 
  8 o     -0.364036    1.848866    3.717533   0                             7/13      9/13     11/13     13/17     14/17      15/5 
  9 o     -0.206097    0.861366    3.717533   0                             7/13      8/13     12/13     13/14      14/5      15/5 
 10 o      0.642917    2.009878    2.864967   0                             4/16      5/13      6/16      7/13     11/22     12/25 
 11 o     -0.849014    1.652907    2.864967   0                              4/4       5/4      6/16      8/13      10/4     12/16 
 12 o      0.206097    0.539343    2.864967   0                              4/4      5/13      6/13      9/13      10/1     11/10 
 13 o      0.642917    0.609169    0.231967   0                             1/13      7/12       8/9      9/12     14/13     15/13 
 14 o      1.577086    0.252198    0.231967   0                             2/13       7/9       8/9      9/21     13/13     15/13 
 15 o      1.419147    1.239698    0.231967   0                             3/13      7/12      8/21      9/21     13/13     14/13 
 16 o     -0.570134    1.309523    1.548467   0                             1/16       2/4       3/4       4/4     17/13     18/13 
 17 o      0.364036    0.952552    1.548467   0                             1/13       2/4      3/13      5/13     16/13     18/13 
 18 o      0.206097    1.940053    1.548467   0                             1/16      2/16      3/13      6/16     16/13     17/13