Si 
 1.0000000000000000
     6.5471378730535044    0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.5471378730535061   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.9631665719853686
 Si 
   8
Selective dynamics
Cartesian
  5.3533959193299276  5.3533959193299294 -0.0000000000000000   T   T   T
  1.1937419537235736  1.1937419537235741 -0.0000000000000000   T   T   T
  1.1937419537235736  5.3533959193299285 -0.0000000000000000   T   T   T
  5.3533959193299276  1.1937419537235741 -0.0000000000000000   T   T   T
  2.0798269828031759  2.0798269828031768  1.9815832859926839   T   T   T
  4.4673108902503254  4.4673108902503280  1.9815832859926839   T   T   T
  4.4673108902503254  2.0798269828031759  1.9815832859926839   T   T   T
  2.0798269828031759  4.4673108902503280  1.9815832859926839   T   T   T