Product Hierarchies

Hi, I have two levels of Product Hierarchies. I am trying to find the PROD1 and PROD2 separately. In SAP the table T179 can show the hierarchies. But it shows the entire product hierarchy.

Can any one let me know the tables to find PROD1 and PROD2 separetely? I mean when I pass the product hierarchy to that table then it should show two levels.

Regards,

Raman