BEGIN {
	nf = split("5 |05|0x4|00| 5|-0x12| 011|-013", f, "|")
	for (i = 1; i <= nf; i++) {
		delete g
		z = f[i]+0	# trigger numeric conversion
		g[f[i]]
		for (x in g)
			printf "[%s]\n", x
	}
}