O Si 
 1.0000000000000000
     7.2655137862822183   -0.0000000000000000    0.0000000000000000
    -3.6327568931411092    6.2921195104664616   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    7.0093475374064251
 O   Si 
  12   6
Selective dynamics
Cartesian
  2.2735835237289850 -0.0000000000000000  0.0000000000000000   T   T   T
 -1.1367917618644932  1.9689810891750401  4.6728983582709489   T   T   T
  2.4959651312766153  4.3231384212914223  2.3364491791354745   T   T   T
  4.9919302625532360 -0.0000000000000000  3.5046737687032126   T   T   T
 -2.4959651312766198  4.3231384212914223  1.1682245895677372   T   T   T
  1.1367917618644914  1.9689810891750401  5.8411229478386879   T   T   T
  3.6327568931411101  1.3786514634523162  5.2570106530548202   T   T   T
  4.2551881493973678  2.4567340235070732  2.9205614739193431   T   T   T
  3.0103256368848559  2.4567340235070732  0.5841122947838681   T   T   T
 -0.0000000000000017  4.9134680470141463  1.7523368843516063   T   T   T
 -0.6224312562562558  3.8353854869593893  6.4252352426225556   T   T   T
  0.6224312562562544  3.8353854869593897  4.0887860634870838   T   T   T
 -0.0000000000000008  2.9317697325812602  5.2570106530548202   T   T   T
  1.0937698266794249  4.8262346441758321  2.9205614739193431   T   T   T
 -1.0937698266794293  4.8262346441758321  0.5841122947838681   T   T   T
  3.6327568931411069  3.3603497778852010  1.7523368843516063   T   T   T
  2.5389870664616816  1.4658848662906301  6.4252352426225556   T   T   T
  4.7265267198205398  1.4658848662906301  4.0887860634870838   T   T   T