C Si 
 1.0000000000000000
     3.4090312332284474   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.4090312332284540    0.0000000000000009
    -0.0000000000000000    0.0000000000000015   18.9902901063724414
 C   Si 
   4   2
Selective dynamics
Cartesian
 -0.0000000000000000  1.7045156166142268 13.1702391209563405   T   T   T
  1.7045156166142241  0.0000000000000003  3.6750940677701296   T   T   T
 -0.0000000000000000  1.7045156166142268  5.8200509854160902   T   T   T
  1.7045156166142241  0.0000000000000012 15.3151960386022576   T   T   T
 -0.0000000000000000  0.0000000000000004  4.7475725265931095   T   T   T
 -0.0000000000000000  0.0000000000000011 14.2427175797793151   T   T   T