Cluster test driver 3 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.987433 2.877912 2.797409 2 1 3.916588 2.799592 1.620454 3 1 3.717737 1.105466 3.009994 Masses 1 28.0855