# type topo
# cell     3.000000     3.000000     1.732100    90.000000    90.000000   120.000000
12
  1 n      1.000050    0.865939    0.000000   0                            12/13     12/12      4/13 
  2 n      1.750050    0.433099    0.000000   0                            11/12     11/13      5/10 
  3 n      1.749900    1.299038    0.000000   0                            10/13     10/12      6/22 
  4 n      0.499950    1.732137    0.000000   0                             1/13      9/13      9/12 
  5 n     -0.250050    2.164977    0.000000   0                             2/16      8/13      8/12 
  6 n     -0.249900    1.299038    0.000000   0                              3/4      7/13      7/12 
  7 n      0.249900    1.299038    0.866050   0                             6/13      6/14     10/13 
  8 n     -0.499950    1.732137    0.866050   0                             5/13      5/14      11/4 
  9 n      0.250050    2.164977    0.866050   0                             4/13      4/14     12/16 
 10 n      1.250100    1.299038    0.866050   0                             3/13      3/14      7/13 
 11 n      1.999950    0.865939    0.866050   0                             2/14      2/13      8/22 
 12 n      1.249950    0.433099    0.866050   0                             1/13      1/14      9/10