C Si 
 1.0000000000000000
     3.5689132425765755    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    3.5689132425765755   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.5689132425765755
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  1.7844566212882877  1.7844566212882877   T   T   T
  1.7844566212882877 -0.0000000000000000  1.7844566212882877   T   T   T
  1.7844566212882877  1.7844566212882877 -0.0000000000000000   T   T   T
  1.7844566212882877  1.7844566212882877  1.7844566212882877   T   T   T
  1.7844566212882877  0.0000000000000000 -0.0000000000000000   T   T   T
  0.0000000000000000  1.7844566212882877 -0.0000000000000000   T   T   T
 -0.0000000000000000 -0.0000000000000000  1.7844566212882877   T   T   T