# type topo
# cell     1.500000     1.500000     2.000000    90.000000    90.000000   120.000000
4
  1 v      0.000000    0.000000    0.000000   0                             2/13      2/12      3/10      3/13       3/1       4/3       4/0      4/12 
  2 v      0.000000    0.000000    1.000000   0                             1/13      1/14      3/10      3/13       3/1       4/4       4/1      4/13 
  3 o     -0.000075    0.866069    0.500000   1                             1/16      1/13      1/25      2/16      2/13      2/25 
  4 o      0.750075    0.432969    1.500000   1                             1/23      1/26      1/14      2/22      2/25      2/13