# type topo
# cell     1.000000     1.000000     3.464100    90.000000    90.000000    90.000000
4
  1 o      0.000000    0.000000    0.000000   0                             3/13      3/10      4/12       4/3      1/22       1/4 
  2 o      0.500000    0.500000    1.732050   0                             3/13      3/22      4/13      4/16      2/22       2/4 
  3 o      0.000000    0.500000    0.866025   0                             1/13      1/16      2/13       2/4      3/16      3/10 
  4 o      0.500000    0.000000    2.598075   0                             1/14      1/23      2/13      2/10      4/16      4/10