# type topo
# cell     3.022900     3.022900     2.000500    90.000000    90.000000   120.000000
18
  1 o      0.577374    0.000000    0.500125   0                             2/13       3/1      6/13       8/9     13/13     16/10 
  2 o     -0.288687    0.500020    0.500125   0                             1/13       3/1       4/4      9/12      14/4     17/13 
  3 o      1.222763    2.117888    0.500125   0                             1/25      2/25      5/13      7/12     15/13     18/13 
  4 o      2.088824    0.872636    1.166958   0                             2/22      5/13      6/13      9/22     10/13     16/22 
  5 o      1.222763    1.372657    1.166958   0                             3/13      4/13      6/13      7/13     11/22     17/13 
  6 o      1.222763    0.372616    1.166958   0                             1/13      4/13      5/13      8/10     12/13     18/10 
  7 o      0.577374    1.745272    1.833792   0                             3/14      5/13      8/13      9/13     10/16     13/14 
  8 o     -0.288687    2.245293    1.833792   0                             1/17      6/16      7/13      9/13     11/13     14/17 
  9 o     -0.288687    1.245252    1.833792   0                             2/14       4/4      7/13      8/13     12/13      15/5 
 10 o      2.445526    0.000000    1.500375   0                             4/13      7/10     11/19     12/22     14/14     18/10 
 11 o     -1.222763    2.117888    1.500375   0                              5/4      8/13      10/7     12/16      15/5     16/13 
 12 o      0.288687    0.500020    1.500375   0                             6/13      9/13      10/4     11/10     13/14     17/13 
 13 o      0.934076    0.872636    0.166708   0                             1/13      7/12     12/12     14/13     15/13     17/13 
 14 o      1.800137    0.372616    0.166708   0                             2/22       8/9     10/12     13/13     15/13     18/10 
 15 o      1.800137    1.372657    0.166708   0                             3/13      9/21     11/21     13/13     14/13     16/22 
 16 o     -0.577374    1.745272    0.833542   0                             1/16       4/4     11/13      15/4     17/13     18/13 
 17 o      0.288687    1.245252    0.833542   0                             2/13      5/13     12/13     13/13     16/13     18/13 
 18 o      0.288687    2.245293    0.833542   0                             3/13      6/16     10/16     14/16     16/13     17/13