O Si 
 1.0000000000000000
     4.9682375189885120   -0.0000000000000000    0.0000000000000000
    -2.4841187594942560    4.3026199034790213    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    5.6157329384422203
 O   Si 
   6   3
Selective dynamics
Cartesian
 -0.0000000000000007  1.8504055259013923 -0.0000000000000000   T   T   T
  0.8816205667605453  3.3774171405283262  3.7438219589614805   T   T   T
 -0.8816205667605480  3.3774171405283262  1.8719109794807403   T   T   T
  2.4841187594942551  2.4522143775776311 -0.0000000000000000   T   T   T
  1.6024981927337096  0.9252027629506963  3.7438219589614805   T   T   T
  3.3657393262548054  0.9252027629506963  1.8719109794807403   T   T   T
  2.4841187594942564  0.0000000000000002  2.8078664692211106   T   T   T
 -1.2420593797471289  2.1513099517395116  0.9359554897403694   T   T   T
  1.2420593797471275  2.1513099517395116  4.6797774487018522   T   T   T