Si 
 1.0000000000000000
     6.7056363370848411   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.7056363370848411   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    6.7056363370848411
 Si 
  12
Selective dynamics
Cartesian
  1.6764090842712103 -0.0000000000000000  3.3528181685424205   T   T   T
  5.0292272528136310 -0.0000000000000000  3.3528181685424205   T   T   T
  3.3528181685424205  1.6764090842712103 -0.0000000000000000   T   T   T
  3.3528181685424205  5.0292272528136310 -0.0000000000000000   T   T   T
 -0.0000000000000000  3.3528181685424205  1.6764090842712105   T   T   T
 -0.0000000000000000  3.3528181685424205  5.0292272528136310   T   T   T
 -0.0000000000000000  1.6764090842712103  3.3528181685424205   T   T   T
 -0.0000000000000000  5.0292272528136310  3.3528181685424205   T   T   T
  1.6764090842712103  3.3528181685424205 -0.0000000000000000   T   T   T
  5.0292272528136310  3.3528181685424205 -0.0000000000000000   T   T   T
  3.3528181685424205 -0.0000000000000000  5.0292272528136310   T   T   T
  3.3528181685424205 -0.0000000000000000  1.6764090842712105   T   T   T