# type topo
# cell     2.309500     2.309500     1.154700    90.000000    90.000000    90.000000
7
  1 v      0.000000    1.154750    0.577350   0                             4/13      4/14       5/4       5/5       6/4       6/5      7/13      7/14 
  2 v      1.154750    0.000000    0.577350   0                             4/13      4/14      5/10      5/11      6/13      6/14      7/10      7/11 
  3 v      0.000000    0.000000    0.577350   1                             4/13      4/14       5/1       5/2       6/4       6/5      7/11      7/10 
  4 o      0.577375    0.577375    0.000000   2                             1/13      1/12      2/13      2/12      3/13      3/12 
  5 o      1.732125    1.732125    0.000000   2                             1/22      1/21      2/16      2/15      3/25      3/24 
  6 o      1.732125    0.577375    0.000000   2                             1/22      1/21      2/13      2/12      3/22      3/21 
  7 o      0.577375    1.732125    0.000000   2                             1/13      1/12      2/16      2/15      3/15      3/16