Si 
 1.0000000000000000
     4.6933783718251654   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.6933783718251654    0.0000000000000000
     0.0000000000000000    0.0000000000000000    2.8134758481974638
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000 -0.0000000000000000 -0.0000000000000000   T   T   T
  2.3466891859125827  2.3466891859125827  1.4067379240987317   T   T   T
  0.0000000000000000  2.3466891859125827  0.7033689620493658   T   T   T
  2.3466891859125827  0.0000000000000000  2.1101068861480985   T   T   T