4

Mg      0.059262183775036     -0.272455493937202      0.237155362556166
Al      1.777040101975650      1.532092935040093     -0.013432765454001
Al      1.736889533691197      0.204700502888310      1.524937799582035
Mg      0.127498729021316      1.605275102864630      1.867812996064702