Breakup of Cost based on MATNR in Report

I have a scenario in report where I need to show packing cost of Goods Each material Doc (BELNR) no Has two (MATNR) .

1^st MATNR shows the Cost of Bulk Packing of Goods and 

2^nd MATNR shows Cost of Single Packed goods

I have added amount in columns restricted material Doc (BELNR)  with material type(MATKL= Packaging) now this shows the Consolidated Packing cost of Goods like this

But my requirement is to add two columns in report which can classify single and packed material cost in separatly based on these MATNR

In above case i had the key in Material type (MATKL) for Packing Material which served as key for Packing Material  on Material Document No (BELNR)

Now i dont have any further classifier for MATNR  which can classify these two different material  to show breakup Cost of Packing Material

to show up report like this