Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 0.291373 0.2175772 2.382477 2 1 0.160359 2.066003 1.905678 3 1 1.191739 1.933254 2.911087 4 1 2.962853 1.944071 0.1667647 Masses 1 28.0855