Si2
1.0
  15.0000000000000000    0.0000000000000000    0.0000000000000009
  -0.0000000000000009   15.5000000000000000    0.0000000000000009
   0.0000000000000000    0.0000000000000000   16.0000000000000000
Si
2
direct
   0.0000000000000000    0.0000000000000000    0.0000000000000000 Si
   0.1333333333333167    0.0000000000000000   -0.0000000000000000 Si
