;with data as 
(
select GroupName,ArticleNumber,Subject,row_number() over(PARTITION BY GroupName order by ArticleNumber) as rn
FROM Articles        
where Subject <>''
)
select TOP 200 
	GroupName,
	ArticleNumber,
	Subject,
	rn, -- used for sorting the output
	((rn-1) / 10) %2 as col_no, -- works out which column to put the data into : 0 or 1 (based on page size of 10 - this could /should be a parameter )
	((rn-1) / 10) /2 as page_break -- works out which "page" within the group to put the data on (based on page size of 10 - this could /should be a parameter )
from data