Si 
 1.0000000000000000
     4.3265037545910952   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    4.3265037545910943   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.3265037545910952
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.1632518772955480  2.1632518772955485   T   T   T
  2.1632518772955485 -0.0000000000000000  2.1632518772955485   T   T   T
  2.1632518772955485  2.1632518772955480 -0.0000000000000000   T   T   T