# type topo
# cell     3.154600     3.154600     3.154900    90.000000    90.000000    90.000000
20
  1 s      0.000000    0.000000    0.500052   0                             5/13      6/10       7/4      8/13 
  2 s      0.000000    0.000000    2.654848   0                            10/10      12/4     11/13      9/13 
  3 s      1.577300    1.577300    2.077502   0                            16/13     13/13     15/13     14/13 
  4 s      1.577300    1.577300    1.077398   0                            17/13     19/13     20/13     18/13 
  5 s      0.000000    1.000008    0.500052   1                             1/13     20/13      19/4      9/12 
  6 s      0.000000    2.154592    0.500052   1                             1/16     20/13      19/4     10/12 
  7 s      2.154592    0.000000    0.500052   1                             1/22     18/13     17/10     12/12 
  8 s      1.000008    0.000000    0.500052   1                             1/13     18/13     17/10     11/12 
  9 s      0.000000    1.000008    2.654848   1                             2/13      5/14     15/13      16/4 
 10 s      0.000000    2.154592    2.654848   1                             2/16      6/14     15/13      16/4 
 11 s      1.000008    0.000000    2.654848   1                             2/13      8/14     14/13     13/10 
 12 s      2.154592    0.000000    2.654848   1                             2/22      7/14     14/13     13/10 
 13 s      1.577300    2.577308    2.077502   1                             3/13     11/16     12/16     17/13 
 14 s      1.577300    0.577292    2.077502   1                             3/13     11/13     12/13     18/13 
 15 s      0.577292    1.577300    2.077502   1                             3/13      9/13     10/13     20/13 
 16 s      2.577308    1.577300    2.077502   1                             3/13      9/22     10/22     19/13 
 17 s      1.577300    2.577308    1.077398   1                             4/13      7/16      8/16     13/13 
 18 s      1.577300    0.577292    1.077398   1                             4/13      7/13      8/13     14/13 
 19 s      2.577308    1.577300    1.077398   1                             4/13      5/22      6/22     16/13 
 20 s      0.577292    1.577300    1.077398   1                             4/13      5/13      6/13     15/13