Si 
 1.0000000000000000
     4.9995270562415541   -0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.9995270562415524   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    2.7103692711321794
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.4997635281207771  2.4997635281207766  1.3551846355660893   T   T   T
 -0.0000000000000000  2.4997635281207766  0.6775923177830446   T   T   T
  2.4997635281207771 -0.0000000000000000  2.0327769533491336   T   T   T