# type topo
# cell     2.787800     2.787800     2.787800    90.000000    90.000000    90.000000
15
  1 v      0.000000    0.000000    0.000000   0                             2/13       3/1       4/3       5/9       6/0      7/12      8/10       9/4 
  2 s      0.577353    0.577353    0.577353   1                             1/13     10/13     12/13     14/13 
  3 s      2.210447    2.210447    0.577353   1                             1/25     10/16     13/13     15/22 
  4 s      2.210447    0.577353    2.210447   1                             1/23     11/13     13/14     14/22 
  5 s      0.577353    2.210447    2.210447   1                             1/17     11/16     12/14     15/13 
  6 s      2.210447    2.210447    2.210447   1                             1/26     11/16     13/14     15/22 
  7 s      0.577353    0.577353    2.210447   1                             1/14     11/13     12/14     14/13 
  8 s      0.577353    2.210447    0.577353   1                             1/16     10/16     12/13     15/13 
  9 s      2.210447    0.577353    0.577353   1                             1/22     10/13     13/13     14/22 
 10 s      1.393900    0.000000    0.577353   2                             2/13      3/10      8/10      9/13 
 11 s      1.393900    0.000000    2.210447   2                             4/13      5/10      6/10      7/13 
 12 s      0.577353    1.393900    0.000000   2                             2/13      5/12      7/12      8/13 
 13 s      2.210447    1.393900    0.000000   2                             3/13      4/12      6/12      9/13 
 14 s      0.000000    0.577353    1.393900   2                             2/13       4/4      7/13       9/4 
 15 s      0.000000    2.210447    1.393900   2                              3/4      5/13       6/4      8/13