Si 
 1.0000000000000000
     3.9930144935049157    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.9930144935049157   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.9930144935049157
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9965072467524587  1.9965072467524587   T   T   T
  1.9965072467524587 -0.0000000000000000  1.9965072467524587   T   T   T
  1.9965072467524587  1.9965072467524587 -0.0000000000000000   T   T   T