4

Nb      0.187204945280379     -0.009692778770089     -0.275599214462746
Nb      1.396949316599723      1.600112360677653     -0.026893370960713
Nb      1.661415205669512     -0.148203630441478      1.256143450402220
Nb     -0.131666296219349      1.266559153826425      1.541916797534514