# type topo
# cell     2.828600     2.828600     2.828600    90.000000    90.000000    90.000000
16
  1 o      0.000000    0.000000    0.000000   0                              6/1      7/13     10/13      12/9      15/3     16/13 
  2 o      2.121450    0.707150    1.414300   0                             5/22      8/13      9/13     11/13     15/13     16/22 
  3 o      0.707150    1.414300    2.121450   0                             5/13      8/13     10/14     12/13     13/14     14/13 
  4 o      1.414300    2.121450    0.707150   0                             6/13      7/16      9/16     11/13     13/13     14/13 
  5 o      0.000000    1.414300    1.414300   0                              2/4      3/13      11/4     12/13     14/13     16/13 
  6 o      2.121450    2.121450    0.000000   0                             1/25      4/13     11/13     12/21     13/13     15/15 
  7 o      0.707150    0.000000    0.707150   0                             1/13      4/10      9/13     10/13     14/10     16/13 
  8 o      1.414300    0.707150    2.121450   0                             2/13      3/13      9/13     10/14     13/14     15/13 
  9 o      1.414300    0.000000    1.414300   0                             2/13      4/10      7/13      8/13     14/10     15/13 
 10 o      0.707150    0.707150    0.000000   0                             1/13      3/12      7/13      8/12     13/13     16/13 
 11 o      2.121450    1.414300    0.707150   0                             2/13      4/13      5/22      6/13     13/13     16/22 
 12 o      0.000000    2.121450    2.121450   0                             1/17      3/13      5/13       6/5     14/13      15/7 
 13 o      1.414300    1.414300    0.000000   0                             3/12      4/13      6/13      8/12     10/13     11/13 
 14 o      0.707150    2.121450    1.414300   0                             3/13      4/13      5/13      7/16      9/16     12/13 
 15 o      2.121450    0.000000    2.121450   0                             1/23      2/13      6/11      8/13      9/13     12/19 
 16 o      0.000000    0.707150    0.707150   0                             1/13       2/4      5/13      7/13     10/13      11/4