# type topo
# cell     1.633000     1.633000     2.000000    90.000000    90.000000   120.000000
6
  1 i      0.000000    0.000000    0.500000   0                             2/12       4/4      4/13       4/1      6/10       6/1      6/13 
  2 i      0.000000    0.000000    1.500000   0                             1/14       3/4      3/13       3/1      5/10       5/1      5/13 
  3 i      0.816500    0.471406    1.166667   0                             2/22      2/13      2/25      4/13      6/22      6/10      6/13 
  4 i      0.816500    0.471406    0.166667   0                             1/22      1/13      1/25      3/13      5/21       5/9      5/12 
  5 i     -0.000000    0.942813    1.833333   0                             2/16      2/25      2/13       4/5      4/17      4/14      6/13 
  6 i     -0.000000    0.942813    0.833333   0                             1/16      1/25      1/13       3/4      3/16      3/13      5/13