Get master objects and their corresponding sub objects

I have a requirement to get all master object types and their corresponding sub objects from transport tables.

I dived into E070 and E071k tables. In E070 if pgmid(program id) is R3TR then it is a Master object type and if it's LIMU then it is suboject or change in sub object.Some entries are also in E071K with their corresponding master types.

For example if i create a table zabcd then in E071 would look like

pgmid   object_type   object_name

R3TR   DEVC           zabcd

R3TR   TABL            zabcd

LIMU    TABT           zabcd

LIMU    TABD           zabc

But how can i find which sub object is related to which master object.For example how to find {LIMU, TABT, zabcd} and {LIMU, TABD, zabcd} are sub objects of which master type.