# type topo
# cell     2.257400     2.257400     1.375400    90.000000    90.000000   120.000000
4
  1 s      0.000000    0.726074    0.000000   0                             2/13      3/13      4/13      4/12 
  2 s      0.499901    1.591929    0.000000   0                             1/13      3/13      4/24      4/25 
  3 s     -0.499901    1.591929    0.000000   0                             1/13      2/13      4/16      4/15 
  4 o      0.000000    0.000000    0.687700   1                             1/13      1/14       2/2       2/1      3/10      3/11