shithub: kwa

ref: d133a4306688e51df959da814d48f10f33cad23a
dir: /test/p.50/

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BEGIN	{ FS = "\t" }
	{ pop[$4 ":" $1] += $3 }
END	{ for (cc in pop)
		print cc ":" pop[cc] | "sort -t: -k 1,1 -k 3nr" }