# type topo
# cell     3.500000     3.500000     1.000000    90.000000    90.000000   120.000000
6
  1 o      0.000000    2.598249    0.250000   0                             4/16      4/15      1/14      1/12      3/13      2/13 
  2 o     -0.500150    1.731964    0.250000   0                             1/13       5/3       5/4      2/14      2/12      3/13 
  3 o      0.500150    1.731964    0.250000   0                             1/13      2/13      6/13      6/12      3/14      3/12 
  4 o      1.750000    0.432839    0.750000   0                             1/10      1/11      4/14      4/12      6/13      5/13 
  5 o      2.250150    1.299125    0.750000   0                             2/23      2/22      4/13      5/14      5/12      6/13 
  6 o      1.249850    1.299125    0.750000   0                             3/13      3/14      4/13      5/13      6/14      6/12