O Si 
 1.0000000000000000
     5.0820054351363666   -0.0000000000000000   -0.0000000000000000
    -2.5410027175681833    4.4011458089986846   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    5.5277470331377634
 O   Si 
   6   3
Selective dynamics
Cartesian
  1.0674490109655976  3.2682510076452345  4.3948522317976053   T   T   T
 -0.8231101864794773  3.6914582659168591  2.5522698874183494   T   T   T
 -0.2443388244861274  1.8425823444352900  0.7096875430390951   T   T   T
  2.2966638930820555  2.5585634645634023  1.1328948013401596   T   T   T
  3.6084517285337836  1.1328948013534579  2.9754771457194136   T   T   T
  1.7178925310887083  0.7096875430818341  4.8180594900986708   T   T   T
  2.6631721298294866  0.0000000000000014  3.6851646887585092   T   T   T
 -1.3315860649147462  2.3063747190830526  1.8425823443792542   T   T   T
  1.2094166526534367  2.0947710899156404 -0.0000000000000000   T   T   T