O Si 
 1.0000000000000000
     8.3738144286463445    0.0000000000000000    0.0000000000000000
     0.0000000000000000    8.7234799813100903    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.7801754950592592
 O   Si 
  16   8
Selective dynamics
Cartesian
  1.8408861870583189  0.0000000000000000  0.0000000000000000   T   T   T
  6.5329282415880296 -0.0000000000000000  2.3900877475296296   T   T   T
  6.0277934013814880  4.3617399906550451  0.0000000000000000   T   T   T
  2.3460210272648525  4.3617399906550451  2.3900877475296296   T   T   T
 -0.0000000000000000  7.2701140686094510  1.1950438737648148   T   T   T
  0.0000000000000000  1.4533659127006378  3.5851316212944435   T   T   T
  4.1869072143231705  2.9083740779544063  1.1950438737648148   T   T   T
  4.1869072143231705  5.8151059033556871  3.5851316212944435   T   T   T
  5.8716146870309478  1.8352779696359522  4.2051654221028887   T   T   T
  2.5021997416153976  6.8882020116741405  1.8150776745732600   T   T   T
  2.5021997416153976  1.8352779696359522  2.9650978204859970   T   T   T
  5.8716146870309478  6.8882020116741405  0.5750100729563691   T   T   T
  1.6847074727077753  6.1970179602909976  4.2051654221028887   T   T   T
  6.6891069559385699  2.5264620210190940  1.8150776745732600   T   T   T
  6.6891069559385699  6.1970179602909976  2.9650978204859970   T   T   T
  1.6847074727077753  2.5264620210190940  0.5750100729563691   T   T   T
  6.8685160790466240  1.4542886672882540  3.0010355450529289   T   T   T
  1.5052983495997241  7.2691913140218345  0.6109477975233002   T   T   T
  1.5052983495997241  1.4542886672882540  4.1692276975359572   T   T   T
  6.8685160790466240  7.2691913140218345  1.7791399500063287   T   T   T
  2.6816088647234495  5.8160286579433054  3.0010355450529289   T   T   T
  5.6922055639228963  2.9074513233667894  0.6109477975233002   T   T   T
  5.6922055639228963  5.8160286579433054  4.1692276975359572   T   T   T
  2.6816088647234495  2.9074513233667894  1.7791399500063287   T   T   T