Si 
 1.0000000000000000
     6.6891835547230487   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6891835547230487    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6891835547230487
 Si 
  16
Selective dynamics
Cartesian
  0.6705908372951245  0.6705908372951244  0.6705908372951244   T   T   T
  2.6740009400663989  6.0185927174279223  4.0151826146566485   T   T   T
  6.0185927174279223  4.0151826146566485  2.6740009400663989   T   T   T
  4.0151826146566485  2.6740009400663989  6.0185927174279223   T   T   T
  4.0151826146566485  4.0151826146566485  4.0151826146566485   T   T   T
  6.0185927174279223  2.6740009400663989  0.6705908372951243   T   T   T
  2.6740009400663989  0.6705908372951244  6.0185927174279223   T   T   T
  0.6705908372951245  6.0185927174279223  2.6740009400663989   T   T   T
  6.0185927174279223  6.0185927174279223  6.0185927174279223   T   T   T
  4.0151826146566485  0.6705908372951243  2.6740009400663989   T   T   T
  0.6705908372951245  2.6740009400663989  4.0151826146566485   T   T   T
  2.6740009400663989  4.0151826146566485  0.6705908372951243   T   T   T
  2.6740009400663989  2.6740009400663989  2.6740009400663989   T   T   T
  0.6705908372951245  4.0151826146566485  6.0185927174279223   T   T   T
  4.0151826146566485  6.0185927174279223  0.6705908372951243   T   T   T
  6.0185927174279223  0.6705908372951244  4.0151826146566485   T   T   T