Nb 
 1.0000000000000000
     3.3223804633474474   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    3.3223804633474474    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    3.3223804633474474
 Nb 
   2
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  1.6611902316737237  1.6611902316737237  1.6611902316737237   T   T   T