Si 
 1.0000000000000000
     3.1036681422879826    0.0000000000000000    0.0000000000000000
    -1.5518340711439913    2.6878554561378509   -0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.3597343693768629
 Si 
   2
Selective dynamics
Cartesian
 -0.0000000155183420  1.7919036463847522  1.0899335923442157   T   T   T
  1.5518340556256509  0.8959518276721348  3.2698007770326472   T   T   T