O Si 
 1.0000000000000000
     4.9087839351324822   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.9087839351324822    0.0000000000000001
     0.0000000000000000    0.0000000000000001    6.8442074974690472
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.1721742514647810  0.5188254156810898  1.2240292854245749   T   T   T
  3.7366096836677003  4.3899585194513913  4.6461330341590967   T   T   T
  1.9355665518851501  3.6265662190310217  2.9350811597918360   T   T   T
  2.9732173832473285  1.2822177161014592  6.3571849085263601   T   T   T
  1.2822177161014594  2.9732173832473285  0.4870225889426876   T   T   T
  3.6265662190310213  1.9355665518851504  3.9091263376772121   T   T   T
  0.5188254156810899  1.1721742514647810  5.6201782120444737   T   T   T
  4.3899585194513913  3.7366096836677003  2.1980744633099500   T   T   T
  1.4774069512679002  1.4774069512679002  0.0000000000000000   T   T   T
  3.4313769838645789  3.4313769838645789  3.4221037487345241   T   T   T
  0.9769850162983406  3.9317989188341387  1.7110518743672622   T   T   T
  3.9317989188341387  0.9769850162983402  5.1331556231017865   T   T   T