Si 
 1.0000000000000000
     6.9679330603563505   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.9679330603563505   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.9679330603563505
 Si 
  12
Selective dynamics
Cartesian
  1.7419832650890876 -0.0000000000000000  3.4839665301781753   T   T   T
  5.2259497952672627 -0.0000000000000000  3.4839665301781753   T   T   T
  3.4839665301781753  1.7419832650890876 -0.0000000000000000   T   T   T
  3.4839665301781753  5.2259497952672627 -0.0000000000000000   T   T   T
 -0.0000000000000000  3.4839665301781753  1.7419832650890879   T   T   T
 -0.0000000000000000  3.4839665301781753  5.2259497952672627   T   T   T
  0.0000000000000000  1.7419832650890876  3.4839665301781753   T   T   T
 -0.0000000000000000  5.2259497952672627  3.4839665301781753   T   T   T
  1.7419832650890876  3.4839665301781753 -0.0000000000000000   T   T   T
  5.2259497952672627  3.4839665301781753 -0.0000000000000000   T   T   T
  3.4839665301781753 -0.0000000000000000  5.2259497952672627   T   T   T
  3.4839665301781753 -0.0000000000000000  1.7419832650890879   T   T   T