O Si 
 1.0000000000000000
     4.6193256880384617    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.6193256880384590   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.0897161820269976
 O   Si 
   4   2
Selective dynamics
Cartesian
  1.4165365072468592  1.4165365072468588 -0.0000000000000000   T   T   T
  3.2027891807916000  3.2027891807916009 -0.0000000000000000   T   T   T
  0.8931263367723702  3.7261993512660925  1.5448580910134984   T   T   T
  3.7261993512660920  0.8931263367723712  1.5448580910134979   T   T   T
 -0.0000000000000002 -0.0000000000000002  0.0000000000000000   T   T   T
  2.3096628440192299  2.3096628440192299  1.5448580910134981   T   T   T