O Si 
 1.0000000000000000
     4.9592097797546977    0.0000000000000000   -0.0000000000000000
    -2.4796048898773488    4.2948016519637999   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    8.5342745245360110
 O   Si 
   8   4
Selective dynamics
Cartesian
 -0.0000000247960499  2.8632011156252068  2.1335686311340019   T   T   T
  2.4796048650813010  1.4316005649706058  6.4007058934020096   T   T   T
  2.0096679426354389  0.0000000143160060 -0.0000000000000000   T   T   T
 -1.0048340085117933  1.7404235272835107  0.0000000000000000   T   T   T
  1.4747708813655560  2.5543781533123018 -0.0000000000000000   T   T   T
  2.9495417875271626  0.0000000143160060  4.2671372622680037   T   T   T
 -1.4747709309576555  2.5543781533123018  4.2671372622680037   T   T   T
  1.0048339589196948  1.7404235272835107  4.2671372622680037   T   T   T
 -0.0000000247960499  2.8632011156252068  3.7405932225223184   T   T   T
  2.4796048650813010  1.4316005649706058  8.0077304847903239   T   T   T
  2.4796048650813010  1.4316005649706058  4.7936813020136899   T   T   T
 -0.0000000247960499  2.8632011156252073  0.5265440397456865   T   T   T