Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 2.683716 2.607351 2.520111 2 1 4.637842 1.301932 1.847927 3 1 5.191502 3.374533 2.444496 4 1 3.483741 4.863871 2.209214 Masses 1 28.0855