C Si 
 1.0000000000000000
     3.1288389167498538   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.1288389167498547   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    6.6579223246937413
 C   Si 
   4   2
Selective dynamics
Cartesian
 -0.0000000000000000  1.5644194583749271  4.0574634788094208   T   T   T
  1.5644194583749271 -0.0000000000000000  0.7285023164625504   T   T   T
 -0.0000000000000000  1.5644194583749271  2.6004588458843201   T   T   T
  1.5644194583749271 -0.0000000000000000  5.9294200082311921   T   T   T
 -0.0000000000000000 -0.0000000000000000  1.6644805811734358   T   T   T
 -0.0000000000000000 -0.0000000000000000  4.9934417435203065   T   T   T