O Si 
 1.0000000000000000
     4.6848150996491498    0.0000000000000000    0.0000000000000000
    -0.0000000000000000    7.8768217263682541    0.0000000000000000
     0.0000000000000000    0.0000000000000000    8.7653319083047609
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.3424075498245744  3.9384108631841284  0.0000000000000000   T   T   T
 -0.0000000000000000  3.9384108631841284  4.3826659541523822   T   T   T
  2.3424075498245744  0.0000000000000000  4.3826659541523822   T   T   T
  1.1712037749122872  1.9692054315920642  5.4991442059778430   T   T   T
  3.5136113247368628  5.9076162947761910  7.6488536564792984   T   T   T
  3.5136113247368628  5.9076162947761910  3.2661877023269166   T   T   T
  1.1712037749122872  1.9692054315920642  1.1164782518254650   T   T   T
  1.8532144699016004  7.4250041957011748  1.8526944541857748   T   T   T
  0.4891930799229736  4.3902283938512108  1.8526944541857748   T   T   T
  2.8316006297475496  3.4865933325170464  2.5299714999666056   T   T   T
  4.1956220197261747  0.4518175306670831  2.5299714999666056   T   T   T
  2.8316006297475496  0.4518175306670831  6.9126374541189834   T   T   T
  4.1956220197261747  3.4865933325170464  6.9126374541189834   T   T   T
  1.8532144699016004  4.3902283938512108  6.2353604083381562   T   T   T
  0.4891930799229736  7.4250041957011748  6.2353604083381562   T   T   T
  2.9781114497871037  7.3791234610303560  3.0139172267620409   T   T   T
  4.0491111996866227  4.4361091285220287  3.0139172267620409   T   T   T
  1.7067036498620454  3.4407125978462303  1.3687487273903396   T   T   T
  0.6357038999625291  0.4976982653378988  1.3687487273903396   T   T   T
  1.7067036498620454  0.4976982653378988  5.7514146815427196   T   T   T
  0.6357038999625291  3.4407125978462303  5.7514146815427196   T   T   T
  2.9781114497871037  4.4361091285220287  7.3965831809144209   T   T   T
  4.0491111996866227  7.3791234610303560  7.3965831809144209   T   T   T