Nb 
 1.0000000000000000
     4.1910794135416465    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.1910794135416465   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    4.1910794135416465
 Nb 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.0955397067708232  2.0955397067708232   T   T   T
  2.0955397067708232 -0.0000000000000000  2.0955397067708232   T   T   T
  2.0955397067708232  2.0955397067708232 -0.0000000000000000   T   T   T