# type topo
# cell     2.316500     2.316500     3.908400    90.000000    90.000000    90.000000
12
  1 s      1.511748    0.804752    0.499884   0                             2/13      8/12      9/22     11/13 
  2 s      0.804752    1.511748    0.499884   0                             1/13      7/12      9/13     11/16 
  3 s      0.353498    0.353498    2.454084   0                              4/1      6/13     10/13     12/13 
  4 s      1.963002    1.963002    2.454084   0                             3/25      5/13     10/22     12/16 
  5 s      1.963002    1.963002    1.454316   0                             4/13      6/25      9/22     11/16 
  6 s      0.353498    0.353498    1.454316   0                             3/13       5/1      9/13     11/13 
  7 s      0.804752    1.511748    3.408516   0                             2/14      8/13     10/13     12/16 
  8 s      1.511748    0.804752    3.408516   0                             1/14      7/13     10/22     12/13 
  9 s      0.000000    1.158250    0.977100   1                              1/4      2/13       5/4      6/13 
 10 s      0.000000    1.158250    2.931300   1                             3/13       4/4      7/13       8/4 
 11 s      1.158250    0.000000    0.977100   1                             1/13      2/10      5/10      6/13 
 12 s      1.158250    0.000000    2.931300   1                             3/13      4/10      7/10      8/13