Si 
 1.0000000000000000
    15.3552587899714332    0.0000000000000000   -0.0000000000000000
     0.0000000000000000   15.3552587899714332    0.0000000000000000
     0.0000000000000000    0.0000000000000000   15.3552587899714332
 Si 
  12
Selective dynamics
Cartesian
  3.8388146974928485  0.0000000000000000  7.6776293949856971   T   T   T
 11.5164440924784977  0.0000000000000000  7.6776293949856971   T   T   T
  7.6776293949856971  3.8388146974928485  0.0000000000000000   T   T   T
  7.6776293949856971 11.5164440924784977  0.0000000000000000   T   T   T
  0.0000000000000000  7.6776293949856971  3.8388146974928485   T   T   T
  0.0000000000000000  7.6776293949856971 11.5164440924784977   T   T   T
  0.0000000000000000  3.8388146974928485  7.6776293949856971   T   T   T
  0.0000000000000000 11.5164440924784977  7.6776293949856971   T   T   T
  3.8388146974928485  7.6776293949856971  0.0000000000000000   T   T   T
 11.5164440924784977  7.6776293949856971  0.0000000000000000   T   T   T
  7.6776293949856971  0.0000000000000000 11.5164440924784977   T   T   T
  7.6776293949856971  0.0000000000000000  3.8388146974928490   T   T   T