Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 0.3816117 2.148684 2.733224 2 1 2.712897 0.4244761 0.4772031 3 1 2.541656 0.3986681 2.603311 4 1 2.733268 2.696855 1.756122 Masses 1 28.0855