O Si 
 1.0000000000000000
     7.6140593057952124   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.1364676526526631    0.0000000000000000
     0.0000000000000000    0.0000000000000000    8.4189204682402874
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  3.8070296528976071 -0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  0.0000000000000000  4.2094602341201428   T   T   T
  3.8070296528976071 -0.0000000000000000  4.2094602341201428   T   T   T
  0.0000000000000000  2.4757695195634630  2.1047301170600714   T   T   T
  3.8070296528976071  1.6606981330892012  2.1047301170600714   T   T   T
 -0.0000000000000000  1.6606981330892012  6.3141903511802155   T   T   T
  3.8070296528976071  2.4757695195634630  6.3141903511802155   T   T   T
  1.9035148264488035  0.0000000000000000  6.8625904552036383   T   T   T
  5.7105444793464102 -0.0000000000000000  5.7657902471567839   T   T   T
  5.7105444793464102 -0.0000000000000000  1.5563300130366429   T   T   T
  1.9035148264488035  0.0000000000000000  2.6531302210834982   T   T   T
  1.9035148264488035  2.0682338263263316  8.1791700083113064   T   T   T
  5.7105444793464102  2.0682338263263316  4.4492106940491274   T   T   T
  5.7105444793464102  2.0682338263263316  0.2397504599289878   T   T   T
  1.9035148264488035  2.0682338263263316  3.9697097741911556   T   T   T
  6.7631741353517691  3.1030314171520885  0.8994463515328111   T   T   T
  4.6579148233410486  1.0334362355005766  0.8994463515328111   T   T   T
  0.8508851704434386  3.1030314171520885  3.3100138825873313   T   T   T
  2.9561444824541687  1.0334362355005766  3.3100138825873313   T   T   T
  0.8508851704434386  1.0334362355005766  7.5194741167074728   T   T   T
  2.9561444824541687  3.1030314171520885  7.5194741167074728   T   T   T
  6.7631741353517691  1.0334362355005766  5.1089065856529485   T   T   T
  4.6579148233410486  3.1030314171520885  5.1089065856529485   T   T   T