Nb 
 1.0000000000000000
     3.6102542297965003   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.6102542297965003   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.6102542297965003
 Nb 
   2
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  1.8051271148982497  1.8051271148982497  1.8051271148982497   T   T   T