Si 
 1.0000000000000000
     6.6473772602938146    0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.6473772602938137   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.9885296295420218
 Si 
   8
Selective dynamics
Cartesian
  5.4445633791932178  5.4445633791932124 -0.0000000000000000   T   T   T
  1.2028138811006002  1.2028138811005991 -0.0000000000000000   T   T   T
  1.2028138811006002  5.4445633791932115 -0.0000000000000000   T   T   T
  5.4445633791932178  1.2028138811005991 -0.0000000000000000   T   T   T
  2.1208747490463082  2.1208747490463074  1.9942648147710103   T   T   T
  4.5265025112475072  4.5265025112475019  1.9942648147710103   T   T   T
  4.5265025112475072  2.1208747490463065  1.9942648147710103   T   T   T
  2.1208747490463082  4.5265025112475019  1.9942648147710103   T   T   T