O Si 
 1.0000000000000000
     4.8559517635875684   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    8.1075923077156933    0.0000000000000000
     0.0000000000000000    0.0000000000000000    8.9713857102089172
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.4279758817937851  4.0537961538578466  0.0000000000000000   T   T   T
  0.0000000000000000  4.0537961538578466  4.4856928551044595   T   T   T
  2.4279758817937851 -0.0000000000000000  4.4856928551044595   T   T   T
  1.2139879408968925  2.0268980769289233  5.5897465120582455   T   T   T
  3.6419638226906810  6.0806942307867704  7.8673320532551356   T   T   T
  3.6419638226906810  6.0806942307867704  3.3816391981506810   T   T   T
  1.2139879408968925  2.0268980769289233  1.1040536569537793   T   T   T
  1.8920727161313149  7.6928310696330291  1.9465705495192469   T   T   T
  0.5359031656624698  4.4685573919405064  1.9465705495192469   T   T   T
  2.9638790474562553  3.6390349157751865  2.5391223055852117   T   T   T
  4.3200485979251058  0.4147612380826584  2.5391223055852117   T   T   T
  2.9638790474562553  0.4147612380826584  7.0248151606896707   T   T   T
  4.3200485979251058  3.6390349157751865  7.0248151606896707   T   T   T
  1.8920727161313149  4.4685573919405064  6.4322634046237113   T   T   T
  0.5359031656624698  7.6928310696330291  6.4322634046237113   T   T   T
  3.0812928415818130  7.5899545253548748  3.0666049567696514   T   T   T
  4.2026348037995485  4.5714339362186625  3.0666049567696514   T   T   T
  1.7746589220057607  3.5361583714970246  1.4190878983348096   T   T   T
  0.6533169597880260  0.5176377823608209  1.4190878983348096   T   T   T
  1.7746589220057607  0.5176377823608209  5.9047807534392698   T   T   T
  0.6533169597880260  3.5361583714970246  5.9047807534392698   T   T   T
  3.0812928415818130  4.5714339362186625  7.5522978118741095   T   T   T
  4.2026348037995485  7.5899545253548748  7.5522978118741095   T   T   T