Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 2.860772 3.213277 0.634813 2 1 3.47304 1.055338 1.294101 3 1 4.886118 2.711251 1.984131 4 1 3.680898 4.652345 1.961095 Masses 1 28.0855