Si 
 1.0000000000000000
     9.9999999995736140   -0.0000000000000005   -0.0000000000000000
    -4.9999999997868070    8.6602540374751271   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000   16.7464571663933235
 Si 
   2
Selective dynamics
Cartesian
 -0.0000000500000080  5.7735027205176026  4.1866142915983291   T   T   T
  4.9999999497868082  2.8867513746925573 12.5598428747949811   T   T   T