O Si 
 1.0000000000000000
     4.2118707990731945   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    5.4523499988063238    0.0000000000000000
     0.0000000000000000    0.0000000000000000    5.0478240142626198
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.1375931210207975  3.4247448195285513  0.5278293654872009   T   T   T
  0.9683422785158103  4.7537801786809188  3.0517413726184772   T   T   T
  3.0742776780524479  3.4247448195285490  1.9960826416440751   T   T   T
  3.2435285205574229  4.7537801786809180  4.5199946487754126   T   T   T
  3.0742776780524506  2.0276051792777348  4.5199946487754126   T   T   T
  3.2435285205574229  0.6985698201253809  1.9960826416440751   T   T   T
  1.1375931210207975  2.0276051792777339  3.0517413726184772   T   T   T
  0.9683422785158119  0.6985698201253805  0.5278293654871998   T   T   T
  0.0000000000000000  4.3885365967982786  1.2619560035656592   T   T   T
  2.1059353995365933  3.7899884014110881  3.7858680106969316   T   T   T
 -0.0000000000000000  1.0638134020079748  3.7858680106969316   T   T   T
  2.1059353995365933  1.6623615973951944  1.2619560035656592   T   T   T