Si 
 1.0000000000000000
     6.6489753129802578   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.6489753129802578    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6489753129802578
 Si 
  16
Selective dynamics
Cartesian
  0.6577986221084274  0.6577986221084274  0.6577986221084274   T   T   T
  2.6666890343817018  5.9911766908718311  3.9822862785985569   T   T   T
  5.9911766908718311  3.9822862785985564  2.6666890343817014   T   T   T
  3.9822862785985564  2.6666890343817018  5.9911766908718311   T   T   T
  3.9822862785985564  3.9822862785985564  3.9822862785985569   T   T   T
  5.9911766908718311  2.6666890343817018  0.6577986221084273   T   T   T
  2.6666890343817018  0.6577986221084274  5.9911766908718311   T   T   T
  0.6577986221084274  5.9911766908718311  2.6666890343817014   T   T   T
  5.9911766908718311  5.9911766908718311  5.9911766908718311   T   T   T
  3.9822862785985564  0.6577986221084273  2.6666890343817014   T   T   T
  0.6577986221084274  2.6666890343817018  3.9822862785985569   T   T   T
  2.6666890343817018  3.9822862785985564  0.6577986221084273   T   T   T
  2.6666890343817018  2.6666890343817018  2.6666890343817014   T   T   T
  0.6577986221084274  3.9822862785985564  5.9911766908718311   T   T   T
  3.9822862785985564  5.9911766908718311  0.6577986221084273   T   T   T
  5.9911766908718311  0.6577986221084274  3.9822862785985569   T   T   T