Si 
 1.0000000000000000
     6.6054245145161623    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.6054245145161605   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.9423882730500628
 Si 
   8
Selective dynamics
Cartesian
  5.4096616715181449  5.4096616715181431 -0.0000000000000000   T   T   T
  1.1957628429980158  1.1957628429980154 -0.0000000000000000   T   T   T
  1.1957628429980158  5.4096616715181423 -0.0000000000000000   T   T   T
  5.4096616715181449  1.1957628429980154 -0.0000000000000000   T   T   T
  2.1069494142600651  2.1069494142600642  1.9711941365250321   T   T   T
  4.4984751002560976  4.4984751002560959  1.9711941365250321   T   T   T
  4.4984751002560976  2.1069494142600633  1.9711941365250321   T   T   T
  2.1069494142600651  4.4984751002560959  1.9711941365250321   T   T   T