Si 
 1.0000000000000000
     5.1150030983505586   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    5.1150030983505568    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    2.6700887453666700
 Si 
   4
Selective dynamics
Cartesian
 -0.0000000000000000  0.0000000000000000 -0.0000000000000000   T   T   T
  2.5575015491752788  2.5575015491752779  1.3350443726833348   T   T   T
 -0.0000000000000000  2.5575015491752779  0.6675221863416674   T   T   T
  2.5575015491752788  0.0000000000000000  2.0025665590250021   T   T   T