# type topo
# cell     2.182000     2.182000     2.687800    90.000000    90.000000    90.000000
8
  1 s      0.117610    0.605069    0.245127   0                              2/4       3/9       4/3      8/13 
  2 s      2.064390    1.576931    0.245127   0                             1/22      3/21      4/15      7/13 
  3 s      0.605069    2.064390    2.442673   0                             1/17       2/5      4/16      6/13 
  4 s      1.576931    0.117610    2.442673   0                             1/23      2/11      3/10      5/13 
  5 s      1.208610    0.485931    1.589027   0                             4/13      6/10      7/13      8/13 
  6 s      0.973390    1.696069    1.589027   0                             3/13      5/16      7/13      8/13 
  7 s      1.696069    1.208610    1.098773   0                             2/13      5/13      6/13      8/22 
  8 s      0.485931    0.973390    1.098773   0                             1/13      5/13      6/13       7/4