C Si 
 1.0000000000000000
     4.3137134061599767    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.3137134061599767   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.3137134061599767
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.1568567030799883  2.1568567030799883   T   T   T
  2.1568567030799883 -0.0000000000000000  2.1568567030799883   T   T   T
  2.1568567030799883  2.1568567030799883 -0.0000000000000000   T   T   T
  2.1568567030799883  2.1568567030799883  2.1568567030799883   T   T   T
  2.1568567030799883  0.0000000000000000 -0.0000000000000000   T   T   T
 -0.0000000000000000  2.1568567030799883 -0.0000000000000000   T   T   T
  0.0000000000000000 -0.0000000000000000  2.1568567030799883   T   T   T