# type topo
# cell     2.000000     2.000000     1.000000    90.000000    90.000000   120.000000
4
  1 o      0.000000    0.000000    0.000000   0                             2/13      2/10      4/13       4/4      3/13       3/1 
  2 s     -0.500000    0.866025    0.000000   1                             1/13      1/16      2/12      2/14 
  3 s      0.500000    0.866025    0.000000   1                             1/13      1/25      3/12      3/14 
  4 s      1.000000    0.000000    0.000000   1                             1/13      1/22      4/14      4/12