# type topo
# cell     3.449700     3.449700     2.000000    90.000000    90.000000   120.000000
12
  1 o     -0.500034    2.280380    0.500000   0                             2/13      3/13      7/16      8/13     10/16     11/13 
  2 o      0.000000    1.414296    0.500000   0                             1/13      3/13      8/13      9/13     11/13     12/13 
  3 o      0.500034    2.280380    0.500000   0                             1/13      2/13      7/16      9/13     10/16     12/13 
  4 o      2.224884    0.707148    1.500000   0                             5/13      6/13      7/13      8/22     10/14     11/23 
  5 o      1.724850    1.573232    1.500000   0                             4/13      6/13      8/22      9/13     11/23     12/14 
  6 o      1.224816    0.707148    1.500000   0                             4/13      5/13      7/13      9/13     10/14     12/14 
  7 o      1.724850    0.000000    1.000000   1                             1/10      3/10      4/13      6/13     10/13     10/14 
  8 o     -0.862425    1.493764    1.000000   1                             1/13      2/13       4/4       5/4     11/13     11/14 
  9 o      0.862425    1.493764    1.000000   1                             2/13      3/13      5/13      6/13     12/13     12/14 
 10 o      1.724850    0.000000    0.000000   1                             1/10      3/10      4/12      6/12      7/13      7/12 
 11 o     -0.862425    1.493764    0.000000   1                             1/13      2/13       4/3       5/3      8/13      8/12 
 12 o      0.862425    1.493764    0.000000   1                             2/13      3/13      5/12      6/12      9/13      9/12