Si 
 1.0000000000000000
     2.6715980073108438   -0.0000000000000000    0.0000000000000000
    -1.3357990036554219    2.3136717430310738    0.0000000000000000
     0.0000000000000000    0.0000000000000000    2.6355426542819482
 Si 
   1
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T