# type topo
# cell     3.732100     3.732100     1.633000    90.000000    90.000000   120.000000
12
  1 i      0.499915    0.288626    0.408250   0                              2/4       3/1      5/10       5/9      6/13      6/12      7/13 
  2 i      3.232185    0.288626    0.408250   0                             1/22      3/10      4/10       4/9      6/21      6/22      8/13 
  3 i      1.866050    2.654842    0.408250   0                             1/25      2/16      4/13      4/12      5/22      5/21      9/13 
  4 i      1.366135    2.943467    1.224750   0                             2/16      2/17      3/13      3/14      5/22      6/25     10/13 
  5 i     -1.366135    2.943467    1.224750   0                             1/16      1/17       3/4       3/5       4/4      6/16     11/13 
  6 i      0.000000    0.577252    1.224750   0                             1/13      1/14       2/5       2/4       4/1      5/10     12/13 
  7 n      1.365949    0.788631    0.408250   1                             1/13      8/13      9/13 
  8 n      2.366151    0.788631    0.408250   1                             2/13      7/13      9/13 
  9 n      1.866050    1.654832    0.408250   1                             3/13      7/13      8/13 
 10 n      0.500101    2.443463    1.224750   1                             4/13     11/13     12/13 
 11 n     -0.500101    2.443463    1.224750   1                             5/13     10/13     12/13 
 12 n      0.000000    1.577262    1.224750   1                             6/13     10/13     11/13