4

Nb     -0.070901434310288      0.299418885506380      0.357644545588772
Nb      1.397059322041412      1.468874786625114      0.060133367641116
Zr      1.618191780244257      0.417003703010590      1.643277136349787
Zr     -0.004133244891548      1.634685620241423      1.325268002530164