Si 
 1.0000000000000000
     6.8530651775146900    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.8530651775146900    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    6.8530651775146900
 Si 
  12
Selective dynamics
Cartesian
  1.7132662943786725  0.0000000000000000  3.4265325887573450   T   T   T
  5.1397988831360184  0.0000000000000000  3.4265325887573450   T   T   T
  3.4265325887573450  1.7132662943786725  0.0000000000000000   T   T   T
  3.4265325887573450  5.1397988831360184  0.0000000000000000   T   T   T
  0.0000000000000000  3.4265325887573450  1.7132662943786727   T   T   T
  0.0000000000000000  3.4265325887573450  5.1397988831360184   T   T   T
  0.0000000000000000  1.7132662943786725  3.4265325887573450   T   T   T
  0.0000000000000000  5.1397988831360184  3.4265325887573450   T   T   T
  1.7132662943786725  3.4265325887573450  0.0000000000000000   T   T   T
  5.1397988831360184  3.4265325887573450  0.0000000000000000   T   T   T
  3.4265325887573450  0.0000000000000000  5.1397988831360184   T   T   T
  3.4265325887573450  0.0000000000000000  1.7132662943786727   T   T   T