# type topo
# cell     2.000000     2.000000     1.414200    90.000000    90.000000    90.000000
8
  1 n      0.000000    0.500000    0.000000   0                             3/13      4/12       2/4 
  2 n      1.000000    0.500000    0.000000   0                             1/22      4/13      3/12 
  3 n      0.500000    0.000000    0.707100   0                             1/13      2/14      4/10 
  4 n      0.500000    1.000000    0.707100   0                             1/14      2/13      3/16 
  5 n      0.000000    1.500000    0.000000   0                              7/6       8/4      6/13 
  6 n      1.000000    1.500000    0.000000   0                             5/13      7/16      8/12 
  7 n      1.500000    0.000000    0.707100   0                             5/20      6/10      8/13 
  8 n      1.500000    1.000000    0.707100   0                             5/22      6/14      7/13