4 letters
- shin7
- shoe6
- shun8
- sibb10
- sibs7
- sice7
- side5
- sign7
- sike8
- silo5
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sire4
- site4
- size13
- skin9
- slob8
- sloe5
- slub9
- slue6
- sned6
- snib8
- snip8
- snit5
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- snye7
- sobs7
- soil5
- soke8
- sole5
- soli5
- some7
- sone5
- song7
- sons5
- soon5
- sorb7
- sore4
- sori4
- sorn5
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- spin8
- spue8
- spun9
- stob7
- stub8
- stun6
- suba8
- subs8
- sued6
- suer5
- sues5
- suet5
- suit5
- sulu7
- sumo8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- suqs14
- sure5
- swob10
- sybo9
- syne7
- tens5
- ties4
- tine5
- tins5
- toes4
- tone5
- tons5
- tube8
- tubs8
- tuis5
- tune6
- tuns6
- udos6
- ukes9
- ulus7
- umbo11
- unai6
- unau7
- unbe9
- unci9
- unco9
- unde7
- undo7
- unit6
- unto6
- upon9
- urbs8
- urns6
- urus6
- used6
- user5
- uses5
- vein9
- vibe11
- vies8
- vine9
- vino9
- vise8
- voes8
- webs10
- wens8
- wine8
- wino8
- wins8
- wise7
- woes7
- wons8
- yens7
- yins7
- yobs9
- yoni7
- zebu17
- zein14
- zins14
- zone14