#command cdx uniq -k two -w max,three -c ,
#stdin
 CDX	one	two	three
aaa	bbb	ccc
ddd	bbb	eee
fff	bbb	ggg
hhh	ccc	iii
jjj	ccc	kkk
lll	ccc	aaa
#stdout
 CDX	count	one	two	three
3	fff	bbb	ggg
3	jjj	ccc	kkk