O Si 
 1.0000000000000000
     7.8792169934470238    0.0000000000000000    0.0000000000000000
    -0.0000000000000000    4.2193267489156350    0.0000000000000000
     0.0000000000000000    0.0000000000000000    7.8784048489624166
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  3.9396084967234555  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  0.0000000000000000  3.9392024244812158   T   T   T
  3.9396084967234555  0.0000000000000000  3.9392024244812158   T   T   T
 -0.0000000000000000  2.5587473487119499  1.9696012122406079   T   T   T
  3.9396084967234555  1.6605794002037553  1.9696012122406079   T   T   T
  0.0000000000000000  1.6605794002037553  5.9088036367218235   T   T   T
  3.9396084967234555  2.5587473487119499  5.9088036367218235   T   T   T
  1.9698042483617277 -0.0000000000000000  6.2884407116483132   T   T   T
  5.9094127450851905  0.0000000000000000  5.5291665617953587   T   T   T
  5.9094127450851905  0.0000000000000000  1.5899641373141054   T   T   T
  1.9698042483617277 -0.0000000000000000  2.3492382871671098   T   T   T
  1.9698042483617277  2.1096633744578197  7.6101876888353424   T   T   T
  5.9094127450851905  2.1096633744578197  4.2074195846082967   T   T   T
  5.9094127450851905  2.1096633744578197  0.2682171601270377   T   T   T
  1.9698042483617277  2.1096633744578197  3.6709852643541603   T   T   T
  6.9305784936780341  3.2227797441023496  0.8668000450719855   T   T   T
  4.8882469964923487  0.9965470048133808  0.8668000450719855   T   T   T
  0.9486384997689029  3.2227797441023496  3.0724023794091946   T   T   T
  2.9909699969545342  0.9965470048133808  3.0724023794091946   T   T   T
  0.9486384997689029  0.9965470048133808  7.0116048038903758   T   T   T
  2.9909699969545342  3.2227797441023496  7.0116048038903758   T   T   T
  6.9305784936780341  0.9965470048133808  4.8060024695532038   T   T   T
  4.8882469964923487  3.2227797441023496  4.8060024695532038   T   T   T