Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 0.7549125 1.625006 2.213684 2 1 2.319721 0.1691894 2.987653 3 1 1.698174 2.459449 0.06348553 4 1 2.846121 2.553463 1.969097 Masses 1 28.0855