Si 
 1.0000000000000000
     6.6473772602938173    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6473772602938110   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.9885296295420192
 Si 
   8
Selective dynamics
Cartesian
  5.4445633791932151  5.4445633791932133 -0.0000000000000000   T   T   T
  1.2028138811005986  1.2028138811005979 -0.0000000000000000   T   T   T
  1.2028138811005986  5.4445633791932124 -0.0000000000000000   T   T   T
  5.4445633791932151  1.2028138811005979 -0.0000000000000000   T   T   T
  2.1208747490463091  2.1208747490463078  1.9942648147710114   T   T   T
  4.5265025112475055  4.5265025112475046  1.9942648147710114   T   T   T
  4.5265025112475055  2.1208747490463069  1.9942648147710114   T   T   T
  2.1208747490463091  4.5265025112475046  1.9942648147710114   T   T   T