O Si 
 1.0000000000000000
     4.4084110436976669   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.4084110436976669    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.4084110436976669
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.4775912733146874  1.4775912733146874  1.4775912733146874   T   T   T
  0.7266142485341469  2.9308197703829806  3.6817967951635207   T   T   T
  2.9308197703829806  3.6817967951635207  0.7266142485341469   T   T   T
  3.6817967951635207  0.7266142485341469  2.9308197703829806   T   T   T
  2.9308197703829806  2.9308197703829806  2.9308197703829806   T   T   T
  3.6817967951635207  1.4775912733146874  0.7266142485341469   T   T   T
  1.4775912733146874  0.7266142485341469  3.6817967951635207   T   T   T
  0.7266142485341469  3.6817967951635207  1.4775912733146874   T   T   T
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.2042055218488334 -0.0000000000000000  2.2042055218488334   T   T   T
  0.0000000000000000  2.2042055218488334  2.2042055218488334   T   T   T
  2.2042055218488334  2.2042055218488334  0.0000000000000000   T   T   T