O Si 
 1.0000000000000000
     6.6408409819376661    1.5337133067294295    1.3270569938007353
    -0.3823253227194278    5.2042520138857613    0.6205034757969405
     1.2214901719550160    1.1389984194496758    6.9508314449129198
 O   Si 
   8   4
Selective dynamics
Cartesian
  5.8921901842503370  5.9957140173513555  4.1156971826559614   T   T   T
  0.8672230146603629  2.5075217737364279  2.8091176975485488   T   T   T
  4.4435549506690561  7.4441939518964508  6.5922762178823620   T   T   T
  7.2477744305119787  2.6510562655401460  1.9119409238424347   T   T   T
  5.9033195086028520  7.6953390160619257  8.7826548412242165   T   T   T
  2.7623084335665706  2.6148099407296024  0.9703739025383779   T   T   T
  0.3702404724871097  3.7388840909447603  0.6300479881404123   T   T   T
  6.0752614687171027  4.4321911475210456  6.4109393374002694   T   T   T
  6.0902942856517992  6.4530280965545961  2.5667875083531362   T   T   T
 -0.1408697729009408  3.3353878713812186  3.6687185303399015   T   T   T
  1.1937596926605967  2.4731051382074987  1.2050533744752521   T   T   T
  5.2791458400309059  3.2124305085417872  7.1336032563436875   T   T   T