Si 
 1.0000000000000000
     2.7559337208226671   -0.0000000000000000    0.0000000000000000
    -1.3779668604113335    2.3867086133786009   -0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.5004373660282555
 Si 
   2
Selective dynamics
Cartesian
 -0.0000000137796689  1.5911390835414294  1.1251093415070639   T   T   T
  1.3779668466316648  0.7955695457485625  3.3753280245211910   T   T   T