O Si 
 1.0000000000000000
     5.3632935759527394    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    5.3632935759527394    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    5.3632935759527394
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.3408233939881853  1.3408233939881853  1.3408233939881853   T   T   T
  4.0224701819645539  4.0224701819645539  1.3408233939881853   T   T   T
  4.0224701819645539  1.3408233939881853  4.0224701819645539   T   T   T
  1.3408233939881853  4.0224701819645539  4.0224701819645539   T   T   T
  1.3408233939881853  1.3408233939881853  4.0224701819645539   T   T   T
  4.0224701819645539  4.0224701819645539  4.0224701819645539   T   T   T
  1.3408233939881853  4.0224701819645539  1.3408233939881853   T   T   T
  4.0224701819645539  1.3408233939881853  1.3408233939881853   T   T   T
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.6816467879763706  2.6816467879763706   T   T   T
  2.6816467879763706  0.0000000000000000  2.6816467879763706   T   T   T
  2.6816467879763706  2.6816467879763706  0.0000000000000000   T   T   T