4

Nb      0.267676374931868      0.178423781507508      0.365601604462019
Nb      1.645947811636040      1.457852818075795      0.256230970784337
Zr      1.103909677445170      0.569915546138387      0.963612107706860
Zr      0.386540061049992      1.368797443389167      1.418140233186075