4

Nb      0.260089461035384      0.284607123775581     -0.246534826980698
Zr      1.363391377445565      1.277156866889753     -0.134561272126514
Nb      1.431988940959870      0.118939421408867      1.229569383213966
Zr     -0.040813075669938      1.539268192583267      1.523118684990058