# type topo
# cell     2.000000     2.000000     1.414200    90.000000    90.000000    90.000000
4
  1 n      0.500000    0.000000    0.000000   0                             3/13       4/9      2/13 
  2 n      1.500000    0.000000    0.000000   0                             1/13      3/21      4/19 
  3 n      0.000000    0.500000    0.707100   0                             1/13       2/5      4/13 
  4 n      0.000000    1.500000    0.707100   0                             1/17       2/7      3/13