# type topo
# cell     3.645800     3.645800     3.645800    90.000000    90.000000    90.000000
18
  1 n      0.000000    1.822900    0.411611   0                             7/13      18/4     17/13 
  2 n      0.000000    1.822900    3.234189   0                             8/13      18/5     17/14 
  3 n      0.411611    0.000000    1.822900   0                            12/13     14/10     13/13 
  4 n      3.234189    0.000000    1.822900   0                            11/13     14/19     13/22 
  5 n      1.822900    0.411611    0.000000   0                            10/13     16/12     15/13 
  6 n      1.822900    3.234189    0.000000   0                             9/13     16/15     15/16 
  7 n      0.000000    1.822900    1.411289   0                             1/13     13/13     14/13 
  8 n      0.000000    1.822900    2.234511   0                             2/13     14/13     13/13 
  9 n      1.822900    2.234511    0.000000   0                             6/13     18/13     17/13 
 10 n      1.822900    1.411289    0.000000   0                             5/13     17/13     18/13 
 11 n      2.234511    0.000000    1.822900   0                             4/13     16/13     15/13 
 12 n      1.411289    0.000000    1.822900   0                             3/13     15/13     16/13 
 13 s      0.000000    0.911450    1.822900   1                             3/13       4/4      7/13      8/13 
 14 s      0.000000    2.734350    1.822900   1                             3/16       4/7      7/13      8/13 
 15 s      1.822900    0.000000    0.911450   1                             5/13      6/10     11/13     12/13 
 16 s      1.822900    0.000000    2.734350   1                             5/14      6/11     11/13     12/13 
 17 s      0.911450    1.822900    0.000000   1                             1/13      2/12      9/13     10/13 
 18 s      2.734350    1.822900    0.000000   1                             1/22      2/21      9/13     10/13