Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.222395 3.946863 0.483997 2 1 3.237957 2.838209 1.28884 3 1 3.347581 5.522081 1.411855 4 1 5.127735 4.000634 2.64962 Masses 1 28.0855