C Si 
 1.0000000000000000
     4.3594564106872316    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.3594564106872316    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.3594564106872316
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.1797282053436158  2.1797282053436158   T   T   T
  2.1797282053436158  0.0000000000000000  2.1797282053436158   T   T   T
  2.1797282053436158  2.1797282053436158  0.0000000000000000   T   T   T
  1.0898641026718079  1.0898641026718077  1.0898641026718077   T   T   T
  3.2695923080154232  3.2695923080154232  1.0898641026718077   T   T   T
  3.2695923080154232  1.0898641026718077  3.2695923080154232   T   T   T
  1.0898641026718079  3.2695923080154232  3.2695923080154232   T   T   T