Si 
 1.0000000000000000
    11.1791390126818921    0.0000000000000000   -0.0000000000000000
     0.0000000000000000   11.1791390126818921    0.0000000000000001
     0.0000000000000000    0.0000000000000001   11.1791390126818921
 Si 
   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000 -0.0000000000000000   T   T   T
 -0.0000000000000000  5.5895695063409638  5.5895695063409638   T   T   T
  5.5895695063409638  5.5895695063409638  0.0000000000000000   T   T   T
  5.5895695063409638  0.0000000000000000  5.5895695063409638   T   T   T
  8.3843542595114329  2.7947847531704819  8.3843542595114329   T   T   T
  2.7947847531704819  2.7947847531704819  2.7947847531704819   T   T   T
  2.7947847531704819  8.3843542595114329  8.3843542595114329   T   T   T
  8.3843542595114329  8.3843542595114329  2.7947847531704819   T   T   T