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	# 3d Lennard-Jones melt

	variable x index 1
	variable y index 1
	variable z index 1

	variable xx equal 20*$x
	variable yy equal 20*$y
	variable zz equal 20*$z

	units lj
	atom_style atomic

	lattice fcc 0.8442
	region box block 0 ${xx} 0 ${yy} 0 ${zz}
	create_box 1 box
	create_atoms 1 box
	mass 1 1.0

	velocity all create 1.44 87287 loop geom

	pair_style lj/cut 2.5
	pair_coeff 1 1 1.0 1.0 2.5

	neighbor 0.3 bin
	neigh_modify delay 0 every 20 check no

	fix 1 all nve

	run 100