O Si 
 1.0000000000000000
     3.8688268508444104   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.8688268508444104    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    2.9597954876790529
 O   Si 
   4   2
Selective dynamics
Cartesian
  1.2275811246608817  1.2275811246608821  0.0000000000000000   T   T   T
  2.6412457261835285  2.6412457261835285  0.0000000000000000   T   T   T
  0.7068323007613224  3.1619945500830902  1.4798977438395264   T   T   T
  3.1619945500830879  0.7068323007613225  1.4798977438395264   T   T   T
 -0.0000000000000002 -0.0000000000000002 -0.0000000000000000   T   T   T
  1.9344134254222047  1.9344134254222054  1.4798977438395264   T   T   T