# type topo
# cell     2.887500     2.887500     1.489900    90.000000    90.000000   120.000000
9
  1 x12    0.000000    0.000000    0.744950   0                             4/13      4/14       5/1       5/2      6/11      6/10       7/1       7/2       9/4       9/5      8/13      8/14 
  2 n     -0.000144    1.667182    0.000000   1                             6/13      4/13      5/13 
  3 n      1.443894    0.833466    0.000000   1                             9/13      7/13      8/13 
  4 n      0.000000    0.667173    0.000000   2                             1/13      1/12      2/13 
  5 n      0.865961    2.167062    0.000000   2                             1/25      1/24      2/13 
  6 n     -0.865961    2.167062    0.000000   2                             1/15      1/16      2/13 
  7 n      1.443750    1.833475    0.000000   2                             1/25      1/24      3/13 
  8 n      0.577789    0.333586    0.000000   2                             1/13      1/12      3/13 
  9 n      2.309711    0.333586    0.000000   2                             1/22      1/21      3/13