O Si 
 1.0000000000000000
     5.3443094011966581   -0.0109593081958358    0.6173239455246310
    -0.9340618391393367    4.0051035031730189   -1.1963852429038968
    -0.7618879217553436    1.0414063788139385    6.9833941168219855
 O   Si 
   8   4
Selective dynamics
Cartesian
  0.8044220282307950  0.3078430402487145  2.8355740697151681   T   T   T
  0.9850862691979941  3.5828499373812002  2.0505704998042327   T   T   T
  4.3111649370601191  2.3790015087447451  3.9309332237573944   T   T   T
  1.7198784621391294  2.5151535089757338  5.0665860441415926   T   T   T
  2.3902083098449314  4.6574237790151072  4.7166988912504602   T   T   T
  3.0228636750698219  2.9375765054245178 -0.0408352618692497   T   T   T
 -0.3753613115139917  1.7141389476412312  0.6810153799502693   T   T   T
 -0.2829152284170799  4.2902264451552856  5.6134421000048764   T   T   T
  3.8352961236100040  3.5119210611535623  6.9028744749812558   T   T   T
  1.2725996795024372  3.9664246554755471  5.6484414442019037   T   T   T
  0.0874773944438506  2.2316204591262543  2.1770799517100348   T   T   T
  3.2664538877639719  1.9620676688258027  5.0547832361976841   T   T   T