# type topo
# cell     3.266400     3.266400     1.115000    90.000000    90.000000    90.000000
12
  1 o      0.000000    0.000000    0.557500   0                             6/13      7/13      7/14      10/5     11/11     11/10 
  2 o      1.633200    1.633200    0.557500   0                             5/13      9/14     12/13     12/14      8/14      8/13 
  3 o      1.633200    0.000000    0.557500   0                            10/13     10/14      6/14      6/13      8/13     12/11 
  4 o      0.000000    1.633200    0.557500   0                            11/14      5/13      5/14      7/13       9/4       9/5 
  5 n      0.816600    1.633200    0.000000   1                             2/13      4/13      4/12 
  6 n      0.816600    0.000000    0.000000   1                             1/13      3/12      3/13 
  7 n      0.000000    0.816600    0.000000   1                             1/13      1/12      4/13 
  8 n      1.633200    0.816600    0.000000   1                             2/12      2/13      3/13 
  9 n      2.449800    1.633200    0.000000   1                             2/12      4/22      4/21 
 10 n      2.449800    0.000000    0.000000   1                             1/21      3/13      3/12 
 11 n      0.000000    2.449800    0.000000   1                             1/15      1/16      4/12 
 12 n      1.633200    2.449800    0.000000   1                             2/13      2/12      3/15