4

Zr      0.268795958965384     -0.144004430120256      0.104550324549143
Zr      1.751706114901998      1.791982789023125      0.221465856023101
Zr      1.333964734467860     -0.287899673802020      1.316108755562723
Zr      0.108892118418960      1.782614219117013      1.356266009634331