Group conversations with the same people

I currently have a lot of groups with the same people:
- Group with A, B, C, D
- Group with B, A, D, C
- Group with D, A, C, B
- Group with D, C, B, A
- etc

In my opinion, these groups should be merged and re-used whenever this combination of people start a group chat, regardless of the order in which they were specified