O Si 
 1.0000000000000000
     7.6409645720033339   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.2234170009480971    0.0000000000000000
     0.0000000000000000    0.0000000000000000    8.3070656398413707
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  3.8204822860016692 -0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  0.0000000000000000  4.1535328199206845   T   T   T
  3.8204822860016692 -0.0000000000000000  4.1535328199206845   T   T   T
  0.0000000000000000  2.5586720531488032  2.0767664099603422   T   T   T
  3.8204822860016692  1.6647449477992935  2.0767664099603422   T   T   T
 -0.0000000000000000  1.6647449477992935  6.2302992298810258   T   T   T
  3.8204822860016692  2.5586720531488032  6.2302992298810258   T   T   T
  1.9102411430008346  0.0000000000000000  6.6247239642421203   T   T   T
  5.7307234290025049  0.0000000000000000  5.8358744955199340   T   T   T
  5.7307234290025049 -0.0000000000000000  1.6823416755992462   T   T   T
  1.9102411430008346 -0.0000000000000000  2.4711911443214376   T   T   T
  1.9102411430008346  2.1117085004740486  8.0223964732077633   T   T   T
  5.7307234290025049  2.1117085004740486  4.4382019865542839   T   T   T
  5.7307234290025049  2.1117085004740486  0.2846691666335996   T   T   T
  1.9102411430008346  2.1117085004740486  3.8688636532870850   T   T   T
  6.7326837971482547  3.2226289248030637  0.9388387518443256   T   T   T
  4.7287630608567488  1.0007880761450307  0.9388387518443256   T   T   T
  0.9082807748550829  3.2226289248030637  3.2146940680763607   T   T   T
  2.9122015111465860  1.0007880761450307  3.2146940680763607   T   T   T
  0.9082807748550829  1.0007880761450307  7.3682268879970474   T   T   T
  2.9122015111465860  3.2226289248030637  7.3682268879970474   T   T   T
  6.7326837971482547  1.0007880761450307  5.0923715717650104   T   T   T
  4.7287630608567488  3.2226289248030637  5.0923715717650104   T   T   T