C Si 
 1.0000000000000000
     3.2007181727947125   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    3.2007181727947134    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    6.9406297506381263
 C   Si 
   4   2
Selective dynamics
Cartesian
 -0.0000000000000000  1.6003590863973569  4.2198467432679001   T   T   T
  1.6003590863973565  0.0000000000000000  0.7495318679488366   T   T   T
 -0.0000000000000000  1.6003590863973569  2.7207830073702270   T   T   T
  1.6003590863973565  0.0000000000000000  6.1910978826892915   T   T   T
 -0.0000000000000000  0.0000000000000000  1.7351574376595318   T   T   T
 -0.0000000000000000  0.0000000000000000  5.2054723129785971   T   T   T