# type topo
# cell     1.000000     1.000000     3.424100    90.000000    90.000000    90.000000
4
  1 n      0.000000    0.000000    0.000000   0                             4/12       4/0      3/13 
  2 n      0.500000    0.500000    1.712050   0                             3/22      3/16      4/13 
  3 i      0.000000    0.000000    1.003261   1                             1/13       2/4      2/10      3/22       3/4      3/16      3/10 
  4 i      0.500000    0.500000    2.715311   1                             1/14      1/26      2/13      4/22       4/4      4/16      4/10