O Si 
 1.0000000000000000
     4.8251938037854520    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.7746124430544405    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.9679235171789298
 O   Si 
   8   4
Selective dynamics
Cartesian
  4.7071556742131175  3.0152783617864247  1.5226642302775084   T   T   T
  0.1180381295723348  3.7593340812680127  4.0066259888669746   T   T   T
  2.2945587723203902  0.3720278597407918  1.5226642302775084   T   T   T
  2.5306350314650614  6.4025845833136472  4.0066259888669746   T   T   T
  4.2051027631966988  5.5155877661251616  2.2016950663372938   T   T   T
  0.6200910405887512  1.2590246769292788  4.6856568249267605   T   T   T
  1.7925058613039748  4.6463308984564957  2.2016950663372938   T   T   T
  3.0326879424814770  2.1282815445979395  4.6856568249267605   T   T   T
  4.5452409554167872  2.5414946860121979  4.9695564880045584   T   T   T
  0.2799528483686631  4.2331177570422360  2.4855947294150935   T   T   T
  2.1326440535240603  0.8458115355150198  4.9695564880045584   T   T   T
  2.6925497502613887  5.9288009075394186  2.4855947294150935   T   T   T