# type topo
# cell     1.633000     1.633000     1.154700    90.000000    90.000000    90.000000
4
  1 o      0.000000    0.408250    0.288675   0                             2/13      2/12      2/10       2/9      4/12       4/3 
  2 o      0.000000    1.224750    0.866025   0                             1/13      1/14      1/16      1/17       3/5      3/14 
  3 o      0.816500    1.224750    0.288675   0                             2/21      2/12      4/13      4/12      4/16      4/15 
  4 o      0.816500    0.408250    0.866025   0                             1/14      1/23      3/13      3/14      3/10      3/11