Si 
 1.0000000000000000
     6.8079960402015018   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    6.8079960402015018   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    6.8079960402015018
 Si 
  12
Selective dynamics
Cartesian
  1.7019990100503755 -0.0000000000000000  3.4039980201007509   T   T   T
  5.1059970301511290 -0.0000000000000000  3.4039980201007509   T   T   T
  3.4039980201007509  1.7019990100503755 -0.0000000000000000   T   T   T
  3.4039980201007509  5.1059970301511290 -0.0000000000000000   T   T   T
 -0.0000000000000000  3.4039980201007509  1.7019990100503757   T   T   T
 -0.0000000000000000  3.4039980201007509  5.1059970301511290   T   T   T
 -0.0000000000000000  1.7019990100503755  3.4039980201007509   T   T   T
 -0.0000000000000000  5.1059970301511290  3.4039980201007509   T   T   T
  1.7019990100503755  3.4039980201007509 -0.0000000000000000   T   T   T
  5.1059970301511290  3.4039980201007509 -0.0000000000000000   T   T   T
  3.4039980201007509 -0.0000000000000000  5.1059970301511290   T   T   T
  3.4039980201007509 -0.0000000000000000  1.7019990100503757   T   T   T