O Si 
 1.0000000000000000
     4.2851212284210538    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.2851212284210547   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.3022762072701446
 O   Si 
   4   2
Selective dynamics
Cartesian
  1.1177712879386406  1.1177712879386397 -0.0000000000000000   T   T   T
  3.1673499404824139  3.1673499404824144 -0.0000000000000000   T   T   T
  1.0247893262718870  3.2603319021491668  1.6511381036350721   T   T   T
  3.2603319021491690  1.0247893262718879  1.6511381036350721   T   T   T
 -0.0000000000000002 -0.0000000000000002  0.0000000000000000   T   T   T
  2.1425606142105269  2.1425606142105273  1.6511381036350721   T   T   T