FRIEND
A) four at a time:
--> 22 other arrangements can be found
- fend
- find
- defi
- fern
- fide
- fine
- firn
- neif
- nerf
- fire
- reif
- rife
- deni
- dine
- nerd
- nide
- rend
- rind
-dire
- ired
- rein
- ride
B) six at a time:
--> 3 other arrangements can be found:
- redfin,
- finder,
- refind
I hope this helps!