C Si 
 1.0000000000000000
     4.2088048560323443   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.2088048560323443   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    4.2088048560323443
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.1044024280161726  2.1044024280161726   T   T   T
  2.1044024280161726 -0.0000000000000000  2.1044024280161726   T   T   T
  2.1044024280161726  2.1044024280161726 -0.0000000000000000   T   T   T
  2.1044024280161726  2.1044024280161726  2.1044024280161726   T   T   T
  2.1044024280161726 -0.0000000000000000 -0.0000000000000000   T   T   T
 -0.0000000000000000  2.1044024280161726 -0.0000000000000000   T   T   T
 -0.0000000000000000 -0.0000000000000000  2.1044024280161726   T   T   T