What are all the words you can make with the letters e n d n i p?

Assuming that the Words don't have to use all the letters:

Red

Nerd

Herd

Hen

Held

Den

If one Word can be used multiple times, following also match:

Needed

Leered

Heeded

Helled

Rendered

Redden

Heed

Need

Reed

Deed

Ended