O Si 
 1.0000000000000000
     4.8144198079944642   -0.0000000000000000   -0.1252061271882915
    -0.0000000000000000    4.8068746196344927    0.0000000000000000
    -6.4756125313220352    0.0000000000000000    7.2181397724155003
 O   Si 
   8   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -3.2378062656610171  0.0000000000000000  3.6090698862077502   T   T   T
  2.4072099039972294  2.4034373098172468 -0.0626030635941418   T   T   T
 -0.8305963616637867  2.4034373098172468  3.5464668226136098   T   T   T
 -0.0000000000000000  2.4034373098172468  0.0000000000000000   T   T   T
 -3.2378062656610171  2.4034373098172468  3.6090698862077502   T   T   T
 -1.6189031328305086  4.0301906094971303  1.8045349431038753   T   T   T
 -4.8567093984915228  0.7766840101373660  5.4136048293116250   T   T   T
  0.5145207484083818  1.3083126245330132  3.8872848865804484   T   T   T
 -5.4135197373969719  1.3083126245330137  6.8147186448545174   T   T   T
 -2.1757134717359552  3.4985619951014848  3.2056487586467712   T   T   T
  3.7523270140693987  3.4985619951014848  0.2782150003726980   T   T   T