C Si 
 1.0000000000000000
     3.5225563221216070   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    3.5225563221216074   -0.0000000000000001
     0.0000000000000000   -0.0000000000000002    7.6013755241275582
 C   Si 
   4   2
Selective dynamics
Cartesian
  0.0000000000000000  1.7612781610608030  4.5814024468555576   T   T   T
  1.7612781610608039 -0.0000000000000000  0.7807146847917729   T   T   T
 -0.0000000000000000  1.7612781610608030  3.0199730772720081   T   T   T
  1.7612781610608039 -0.0000000000000002  6.8206608393357886   T   T   T
 -0.0000000000000000 -0.0000000000000000  1.9003438810318898   T   T   T
  0.0000000000000000 -0.0000000000000001  5.7010316430956678   T   T   T