4 letters
- ruse5
- sabe7
- sade5
- same7
- scud9
- scum11
- seam7
- seed5
- seem7
- seme7
- semi7
- send6
- shed7
- side5
- sled6
- slub9
- slue6
- slum9
- smew10
- smug10
- smut8
- sned6
- snub9
- some7
- sped8
- spud9
- spue8
- stem7
- stub8
- stud6
- stum8
- suba8
- subs8
- sudd7
- suds6
- sued6
- suer5
- sues5
- suet5
- sumo8
- sump11
- sums8
- supe8
- surd6
- sure5
- swum11
- teds5
- tube8
- tubs8
- udos6
- ukes9
- umbo11
- umps11
- unbe9
- unde7
- urbs8
- urds6
- used6
- user5
- uses5
- webs10
- weds8
- zebu17
- zeds14