4

Zr      0.050901785060385      0.298728599963223      0.349609521959701
Nb      1.472003250208693      1.236138387486882      0.162153163715910
Zr      1.316046882428297      0.077914566895494      1.546300801793099
Nb     -0.292010682553439      1.626553692509093      1.611844838345377