# type topo
# cell     1.902000     3.688500     1.000000    90.000000   101.987000    90.000000
8
  1 v      0.423646    1.411220    0.399201   0                             2/14      2/13       2/4      7/13      1/14      1/12      6/13      6/12 
  2 v      1.374509    1.411220    0.089896   0                             1/12      1/13      1/22      8/12      2/14      2/12      5/13      5/12 
  3 v      1.374646    3.255470    0.399201   0                             4/23      4/22      4/13      5/13      3/14      3/12      8/16      8/15 
  4 v      0.423509    3.255470    0.089896   0                              3/3       3/4      3/13      6/12      4/14      4/12      7/16      7/15 
  5 v      1.270664    2.277280    0.578993   0                             2/13      2/14      3/13      6/12      6/13      6/22      5/14      5/12 
  6 v      0.319802    2.277280    0.888299   0                             1/13      1/14      4/14      5/14      5/13       5/4      6/14      6/12 
  7 v      0.319664    0.433030    0.578993   0                             1/13      4/10      4/11       8/3       8/4      8/13      7/14      7/12 
  8 v      1.270802    0.433030    0.888299   0                             2/14      3/10      3/11      7/23      7/22      7/13      8/14      8/12