C Si 
 1.0000000000000000
     4.3581740215395319    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.3581740215395319   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.3581740215395319
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.1790870107697660  2.1790870107697660   T   T   T
  2.1790870107697660 -0.0000000000000000  2.1790870107697660   T   T   T
  2.1790870107697660  2.1790870107697660 -0.0000000000000000   T   T   T
  1.0895435053848830  1.0895435053848828  1.0895435053848828   T   T   T
  3.2686305161546483  3.2686305161546483  1.0895435053848828   T   T   T
  3.2686305161546483  1.0895435053848828  3.2686305161546483   T   T   T
  1.0895435053848830  3.2686305161546483  3.2686305161546483   T   T   T