Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.483855 3.232448 1.251337 2 1 3.689866 2.398626 1.235866 3 1 3.590905 4.264079 2.332914 4 1 5.55038 3.265447 1.999914 Masses 1 28.0855