# type topo
# cell     4.271700     4.271700     3.550800    90.000000    90.000000   120.000000
18
  1 n      3.503435    0.443558    0.231157   0                              5/9      6/21     10/13 
  2 n      2.135850    2.812284    0.231157   0                             4/21      5/12     12/13 
  3 n      0.768265    0.443558    0.231157   0                              4/9      6/12     11/13 
  4 n     -1.367585    3.255843    3.319643   0                              2/5      3/17     13/13 
  5 n      1.367585    3.255843    3.319643   0                             1/17      2/14     15/13 
  6 n      0.000000    0.887116    3.319643   0                              1/5      3/14     14/13 
  7 n      1.367585    1.676692    1.414757   0                            11/13     12/13     16/13 
  8 n      2.135850    0.346017    1.414757   0                            10/13     11/13     18/10 
  9 n      2.904115    1.676692    1.414757   0                            10/13     12/13     17/22 
 10 n      2.904115    0.789575    0.952443   0                             1/13      8/13      9/13 
 11 n      1.367585    0.789575    0.952443   0                             3/13      7/13      8/13 
 12 n      2.135850    2.120250    0.952443   0                             2/13      7/13      9/13 
 13 n     -0.768265    2.909825    2.598357   0                             4/13     17/13     18/13 
 14 n     -0.000000    1.579151    2.598357   0                             6/13     16/13     17/13 
 15 n      0.768265    2.909825    2.598357   0                             5/13     16/13     18/13 
 16 n      0.768265    2.022709    2.136043   0                             7/13     14/13     15/13 
 17 n     -0.768265    2.022709    2.136043   0                              9/4     13/13     14/13 
 18 n     -0.000000    3.353383    2.136043   0                             8/16     13/13     15/13