C Si 
 1.0000000000000000
     4.3071302861682286   -0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.3071302861682286    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    4.3071302861682286
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000 -0.0000000000000000 -0.0000000000000000   T   T   T
 -0.0000000000000000  2.1535651430841143  2.1535651430841143   T   T   T
  2.1535651430841143  0.0000000000000000  2.1535651430841143   T   T   T
  2.1535651430841143  2.1535651430841143  0.0000000000000000   T   T   T
  1.0767825715420571  1.0767825715420569  1.0767825715420569   T   T   T
  3.2303477146261708  3.2303477146261708  1.0767825715420569   T   T   T
  3.2303477146261708  1.0767825715420569  3.2303477146261708   T   T   T
  1.0767825715420571  3.2303477146261708  3.2303477146261708   T   T   T