# type topo
# cell     2.846100     2.846100     2.964000    90.000000    90.000000    90.000000
20
  1 s      0.000000    0.000000    0.000000   0                             5/13       6/1       7/9       8/3 
  2 s      0.000000    0.000000    1.482000   0                             9/10      10/4     11/13      12/1 
  3 s      1.423050    1.423050    1.482000   0                            13/13     14/13     15/13     16/13 
  4 s      1.423050    1.423050    0.000000   0                            17/13     18/13     19/12     20/12 
  5 s      0.907906    0.102744    0.406068   1                             1/13     15/13     16/10     20/12 
  6 s      1.938194    2.743356    0.406068   1                             1/25     15/16     16/13     19/12 
  7 s      0.102744    1.938194    2.557932   1                             1/17      13/4     14/13     18/14 
  8 s      2.743356    0.907906    2.557932   1                             1/23     13/13     14/22     17/14 
  9 s      0.907906    2.743356    1.888068   1                             2/16     16/13     19/13     20/16 
 10 s      1.938194    0.102744    1.888068   1                             2/22     15/13     19/10     20/13 
 11 s      0.102744    0.907906    1.075932   1                             2/13     14/13      17/4     18/13 
 12 s      2.743356    1.938194    1.075932   1                             2/25     13/13     17/13     18/22 
 13 s      2.330956    1.525794    1.888068   1                             3/13      7/22      8/13     12/13 
 14 s      0.515144    1.320306    1.888068   1                             3/13      7/13       8/4     11/13 
 15 s      1.525794    0.515144    1.075932   1                             3/13      5/13      6/10     10/13 
 16 s      1.320306    2.330956    1.075932   1                             3/13      5/16      6/13      9/13 
 17 s      2.330956    1.320306    0.406068   1                             4/13      8/12     11/22     12/13 
 18 s      0.515144    1.525794    0.406068   1                             4/13      7/12     11/13      12/4 
 19 s      1.525794    2.330956    2.557932   1                             4/14      6/14      9/13     10/16 
 20 s      1.320306    0.515144    2.557932   1                             4/14      5/14      9/10     10/13