# type topo
# cell     3.333400     3.333400     1.490600    90.000000    90.000000    90.000000
7
  1 s      0.000000    1.666700    0.000000   0                             4/13      4/12      5/13      5/12 
  2 s      1.666700    0.000000    0.000000   0                             6/13      6/12      7/13      7/12 
  3 s      0.000000    0.000000    0.745300   1                             4/13      5/10       6/4      7/13 
  4 n      0.000000    1.000020    0.745300   2                             1/13      1/14      3/13 
  5 n      0.000000    2.333380    0.745300   2                             1/13      1/14      3/16 
  6 n      2.333380    0.000000    0.745300   2                             2/13      2/14      3/22 
  7 n      1.000020    0.000000    0.745300   2                             2/13      2/14      3/13