4 letters
- mils8
- mugs10
- muni9
- muns9
- nags7
- naif8
- nail6
- neif8
- nibs8
- nigh9
- nill7
- nils6
- nims8
- nips8
- nisi5
- nits5
- nogs7
- noil6
- nous6
- nubs9
- null8
- nuns7
- nurl7
- nuts6
- oils5
- onus6
- pfui11
- pigs9
- ping10
- pins8
- plug11
- plus9
- pugs10
- puli9
- puls9
- pung11
- puns9
- quin15
- rifs7
- rigs6
- ring7
- rins5
- rugs7
- ruin6
- rung8
- runs6
- sail5
- sain5
- sang7
- saul6
- seif7
- self8
- shin7
- shul8
- shun8
- sial5
- sift7
- sigh8
- sign7
- sild6
- silk9
- sill6
- silo5
- silt5
- sine5
- sing7
- sinh7
- sink9
- sins5
- skin9
- slag7
- slid6
- slim8
- slip8
- slit5
- slog7
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smug10
- snag7
- snib8
- snip8
- snit5
- snog7
- snub9
- snug8
- soil5
- soli5
- song7
- soul6
- spin8
- spun9
- stun6
- sugh9
- suit5
- sulk10
- sulu7
- sung8
- sunk10
- sunn7
- suns6
- surf8
- swig9
- syli7
- tils5
- ting7
- tins5
- tugs7
- tuis5
- tung8
- tuns6
- ughs9
- ugly10
- ulan7
- ulna7
- ulus7
- unai6
- unci9
- unit6
- urns6
- vigs10
- vugs11
- wigs9
- wing10
- wins8
- yins7
- zigs15
- zing16
- zins14