Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.989482 2.74037 0.7537924 2 1 0.5238862 4.134075 1.701981 3 1 2.155499 3.587274 3.303778 4 1 3.995828 2.956534 2.17043 Masses 1 28.0855