Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 0.5841741 2.545286 0.5022438 2 1 0.7241085 2.019482 2.965193 3 1 2.731277 0.2602868 2.851559 4 1 2.625027 1.721931 1.1007 Masses 1 28.0855