# type topo
# cell     1.920700     1.920700     1.937000    90.000000   104.895000    90.000000
8
  1 v      0.355675    0.124461    0.607436   0                              2/4      2/13      4/13      4/10      5/10      6/10       6/9      7/13 
  2 v      1.316074    0.124461    0.328521   0                             1/22      1/13      3/13      3/10      5/10       5/9       6/9      8/12 
  3 v      1.316025    1.084811    0.607436   0                             2/13      2/16      4/13      4/22      5/13      7/22      8/13      8/12 
  4 v      0.355724    1.084811    0.328521   0                             1/13      1/16      3/13       3/4      6/12      7/13      7/12       8/3 
  5 v      1.067122    1.796239    1.264478   0                             1/16      2/16      2/17      3/13      6/22      6/13      8/13      8/16 
  6 v      0.106724    1.796239    1.543393   0                             1/16      1/17      2/17      4/14       5/4      5/13      7/13      7/16 
  7 v      0.106772    0.835889    1.264478   0                             1/13       3/4      4/13      4/14      6/13      6/10      8/13       8/4 
  8 v      1.067074    0.835889    1.543393   0                             2/14      3/13      3/14      4/23      5/13      5/10      7/13      7/22