4 letters
- sike8
- sims7
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- size13
- skin9
- skis8
- slue6
- slur6
- sned6
- snib8
- snip8
- snit5
- snub9
- snug8
- snye7
- sone5
- sons5
- sore4
- sori4
- sorn5
- sour5
- sous5
- spin8
- spue8
- spun9
- spur8
- sris4
- stir4
- stun6
- subs8
- such10
- suds6
- sued6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- syne7
- tens5
- tern5
- then7
- thin7
- thir6
- this6
- thru7
- thus7
- tier4
- ties4
- tine5
- tins5
- tire4
- true5
- tuis5
- tune6
- tuns6
- turn6
- tush7
- ughs9
- ukes9
- unai6
- unbe9
- unci9
- unde7
- unit6
- urbs8
- urds6
- urea5
- urge7
- uric8
- urns6
- ursa5
- urus6
- used6
- user5
- uses5
- vein9
- vier8
- vies8
- vine9
- vise8
- weir7
- wens8
- when10
- whin10
- whir9
- wine8
- wins8
- wire7
- wise7
- wish9
- wiss7
- wren8
- wuss8
- yens7
- yins7
- zein14
- zins14