Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.398973 0.5934397 0.3006912 2 1 0.7747556 0.9428375 2.620777 3 1 1.097873 2.713389 1.114481 4 1 2.795036 0.6708796 1.826441 Masses 1 28.0855