Si 
 1.0000000000000000
    19.2919706945451068    0.0000000000000000    0.0000000000000000
     0.0000000000000000   19.2919706945451033    0.0000000000000000
     0.0000000000000000    0.0000000000000000   10.5489083266007651
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  9.6459853472725428  9.6459853472725481  5.2744541633003754   T   T   T
 -0.0000000000000000  9.6459853472725481  2.6372270816501877   T   T   T
  9.6459853472725428  0.0000000000000000  7.9116812449505654   T   T   T