How to get result as per no of collapsespecification with sharepoint rest API?

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C#

REST

API

SharePoint2013

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Hi All,
I trying to get the result as per no of collapseSpecification in a single request from the SharePoint API.

I am trying to explain the scenario:-

Raw Data in SharePoint :-																																
D	R	A	D	D	A	A	E	D	R	E	A	A	R	T	D	T	T	E	E	T	B	C	B	B	R	C	F	G	F	C	B	B

After Sort and Group by Name (collapseSpecification ) of Raw Data in SharePoint	:-																															
A	A	A	A	A	B	B	B	B	B	C	C	C	D	D	D	D	D	E	E	E	E	F	F	G	R	R	R	R	T	T	T	T

Result-set as per query									

1) Start-0 limit-10									
A	A	A	A	A	B	B	B	B	B

2) Start-21 limit-10									
E	E	F	F	G	R	R	R	R	T

3) Start-31 limit-10								
T	T	T						

What I have tried:

I implemented this:-

kq.CollapseSpecification = string.Format("{0}:{1}", "Name", "5");
            kq.StartRow = args.Offset;
            kq.RowLimit = args.Limit;

as you can see I used CollapseSpecification with property_name is "Name" and size "5", so we don't have 5 no of data with the same name that's why its returning less then 5 no of datas (like "E","F","G" etc.). If I tried to get the data with pagination (StartRow & RowLimit ) then it might return same data in next result-set(result-set 2 and 3 both have "T"), but I don't want that.

So I need to get the result as per no of CollapseSpecification.
Is there anyway to do this:-

Expected Result:-											
No of Name group 2 (per page)											
A	A	A	A	A	B	B	B	B	B		

No of Name group 2	(per page)							
C	C	C	D	D	D	D	D	

No of Name group 2	(per page)							
E	E	E	E	F	F			

No of Name group 2	(per page)							
G	R	R	R	R				

I am implemented this with KeywordQuery in C#.

Thanks in Advance.
Any suggestions are welcome.