H Si 
 1.0000000000000000
     2.1809873911911195   -0.0000000000000001    0.0000000000000000
    -1.0904936955955598    1.8887904861050593    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.6718371223812309
 H   Si 
   2   2
Selective dynamics
Cartesian
 -0.0000000109049378  1.2591936636993417  2.2405270314334529   T   T   T
  1.0904936846906232  0.6295968349976553  1.4313100909477781   T   T   T
 -0.0000000109049378  1.2591936636993417  0.8686629334144365   T   T   T
  1.0904936846906232  0.6295968349976553  2.8031741889667936   T   T   T