O Si 
 1.0000000000000000
     4.9433182948516183   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.9433182948516174    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6519913508037085
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.1697298687050339  0.5707089672198703  1.2257481865832378   T   T   T
  3.7735884261465853  4.3726093276317481  4.5517438619850958   T   T   T
  1.9009501802059385  3.6413890161308400  2.8887460242841643   T   T   T
  3.0423681146456794  1.3019292787207744  6.2147416996860212   T   T   T
  1.3019292787207752  3.0423681146456789  0.4372496511176879   T   T   T
  3.6413890161308422  1.9009501802059376  3.7632453265195416   T   T   T
  0.5707089672198709  1.1697298687050337  5.4262431642204669   T   T   T
  4.3726093276317526  3.7735884261465831  2.1002474888186153   T   T   T
  1.5272129786025037  1.5272129786025037  0.0000000000000000   T   T   T
  3.4161053162491144  3.4161053162491140  3.3259956754018529   T   T   T
  0.9444461688233042  3.9988721260283131  1.6629978377009265   T   T   T
  3.9988721260283149  0.9444461688233039  4.9889935131027778   T   T   T