4 letters
- sinh7
- slue6
- slum9
- smew10
- smug10
- smut8
- sned6
- snub9
- snug8
- snye7
- some7
- sone5
- spue8
- spun9
- stem7
- stum8
- stun6
- such10
- sued6
- suer5
- sues5
- suet5
- sugh9
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sure5
- swum11
- syne7
- tens5
- them9
- then7
- thus7
- tune6
- tuns6
- tush7
- ughs9
- ukes9
- umps11
- unbe9
- unde7
- urns6
- used6
- user5
- uses5
- wens8
- when10
- yens7