Nb 
 1.0000000000000000
     4.1687071816731223    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.1687071816731223    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    4.1687071816731223
 Nb 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.0843535908365611  2.0843535908365611   T   T   T
  2.0843535908365611  0.0000000000000000  2.0843535908365611   T   T   T
  2.0843535908365611  2.0843535908365611  0.0000000000000000   T   T   T