# type topo
# cell     1.000000     2.646100     1.309200    90.000000    90.000000    90.000000
4
  1 v      0.000000    0.378128    0.327300   0                              4/3       4/4      4/12      4/13       1/4      1/22       2/9      2/10 
  2 v      0.000000    2.267972    0.981900   0                             1/17      1/16      3/13       3/5      3/14       3/4       2/4      2/22 
  3 v      0.500000    1.701178    0.327300   0                             2/13      2/21      2/12      2/22      3/22       3/4      4/13      4/12 
  4 v      0.500000    0.944922    0.981900   0                             1/23      1/22      1/14      1/13      3/13      3/14       4/4      4/22