Si 
 1.0000000000000000
     4.7793124351775127   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    4.7793124351775127    0.0000000000000000
     0.0000000000000000    0.0000000000000000    2.6416876309344590
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000 -0.0000000000000000   T   T   T
  2.3896562175887563  2.3896562175887563  1.3208438154672295   T   T   T
 -0.0000000000000000  2.3896562175887563  0.6604219077336148   T   T   T
  2.3896562175887563  0.0000000000000000  1.9812657232008444   T   T   T