Si 
 1.0000000000000000
     6.5592917688941323   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.5592917688941332    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.9226241576627343
 Si 
   8
Selective dynamics
Cartesian
  5.3775507981118622  5.3775507981118622  0.0000000000000000   T   T   T
  1.1817409707822701  1.1817409707822699  0.0000000000000000   T   T   T
  1.1817409707822701  5.3775507981118613  0.0000000000000000   T   T   T
  5.3775507981118622  1.1817409707822699  0.0000000000000000   T   T   T
  2.0979049136647974  2.0979049136647974  1.9613120788313680   T   T   T
  4.4613868552293399  4.4613868552293390  1.9613120788313680   T   T   T
  4.4613868552293399  2.0979049136647965  1.9613120788313680   T   T   T
  2.0979049136647974  4.4613868552293390  1.9613120788313680   T   T   T