O Si 
 1.0000000000000000
     4.4489941457276787   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    4.4489941457276787    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.4489941457276787
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.4958010327233453  1.4958010327233455  1.4958010327233455   T   T   T
  0.7286960401404947  2.9531931130043341  3.7202981055871827   T   T   T
  2.9531931130043341  3.7202981055871827  0.7286960401404944   T   T   T
  3.7202981055871831  0.7286960401404945  2.9531931130043341   T   T   T
  2.9531931130043341  2.9531931130043341  2.9531931130043341   T   T   T
  3.7202981055871831  1.4958010327233455  0.7286960401404944   T   T   T
  1.4958010327233453  0.7286960401404945  3.7202981055871827   T   T   T
  0.7286960401404947  3.7202981055871827  1.4958010327233455   T   T   T
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.2244970728638389 -0.0000000000000000  2.2244970728638389   T   T   T
 -0.0000000000000000  2.2244970728638389  2.2244970728638389   T   T   T
  2.2244970728638389  2.2244970728638389  0.0000000000000000   T   T   T