O Si 
 1.0000000000000000
     4.5322554110513504    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.5322554110513504   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.5015801529178936
 O   Si 
   4   2
Selective dynamics
Cartesian
  1.0964019060105743  1.0964019060105741 -0.0000000000000000   T   T   T
  3.4358535050407770  3.4358535050407770 -0.0000000000000000   T   T   T
  1.1697257995151003  3.3625296115362477  1.7507900764589464   T   T   T
  3.3625296115362477  1.1697257995151003  1.7507900764589464   T   T   T
 -0.0000000000000002 -0.0000000000000002  0.0000000000000000   T   T   T
  2.2661277055256748  2.2661277055256748  1.7507900764589464   T   T   T