Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 2.683384 0.6467413 1.642761 2 1 3.245791 2.703982 2.222722 3 1 3.737288 4.91418 2.043298 4 1 4.142825 3.455017 4.506693 Masses 1 28.0855