4 letters
- muni9
- mure8
- naif8
- near5
- neif8
- nerd6
- neuk10
- neum9
- nevi9
- nice8
- nide6
- nidi6
- nigh9
- nine6
- nisi5
- nite5
- nixe12
- noir5
- nori5
- nude7
- nuke10
- nurd7
- nurl7
- ogre6
- pein8
- peri7
- pfui11
- pier7
- pine8
- ping10
- pirn8
- prig9
- pung11
- pure8
- puri8
- quin15
- rage6
- ragi6
- rain5
- rang7
- rani5
- reef7
- refs7
- reft7
- regs6
- reif7
- rein5
- reis4
- rend6
- rent5
- rice7
- ride5
- riel5
- rife7
- riff10
- rifs7
- rift7
- rigs6
- rile5
- rime7
- rind6
- ring7
- rink9
- rins5
- ripe7
- rise4
- rite4
- rive8
- roue5
- rube8
- rude6
- rued6
- ruer5
- rues5
- ruff11
- ruga7
- rugs7
- ruin6
- rule6
- rune6
- rung8
- runs6
- runt6
- ruse5
- seif7
- serf7
- sign7
- sine5
- sing7
- sire4
- snug8
- suer5
- sung8
- sure5
- surf8
- tern5
- tier4
- tine5
- ting7
- tire4
- tref7
- trig6
- true5
- trug7
- tune6
- tung8
- turf8
- turn6
- unai6
- unbe9
- unci9
- unde7
- unit6
- urea5
- urge7
- uric8
- urns6
- user5
- vein9
- vier8
- vine9
- weir7
- wife10
- wine8
- wing10
- wire7
- wren8
- zein14
- zing16