Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.500338 2.7906 1.855645 2 1 0.2759319 4.819421 1.912518 3 1 2.741561 4.698408 2.586297 4 1 3.692301 2.569506 2.304209 Masses 1 28.0855