# type topo
# cell     3.101800     3.101800     2.186400    90.000000    90.000000   120.000000
6
  1 n      0.000000    2.186060    0.000000   0                             2/12      3/13      4/16 
  2 n     -0.342284    1.593208    1.457600   0                             1/14      3/13       5/4 
  3 n      0.342284    1.593208    0.728800   0                             1/13      2/13      6/13 
  4 n      1.550900    0.500177    0.000000   0                             1/10      5/12      6/13 
  5 n      1.893184    1.093030    1.457600   0                             2/22      4/14      6/13 
  6 n      1.208616    1.093030    0.728800   0                             3/13      4/13      5/13