4 letters
- rums8
- ruse5
- sade5
- same7
- scad8
- scam10
- scud9
- scum11
- scup11
- scut8
- seam7
- secs7
- sect7
- seed5
- seem7
- seme7
- semi7
- send6
- shed7
- sice7
- side5
- sled6
- slue6
- slum9
- smew10
- smug10
- smut8
- sned6
- some7
- spec10
- sped8
- spud9
- spue8
- stem7
- stud6
- stum8
- such10
- suck12
- sudd7
- suds6
- sued6
- suer5
- sues5
- suet5
- sumo8
- sump11
- sums8
- supe8
- surd6
- sure5
- swum11
- syce9
- teds5
- udos6
- ukes9
- umps11
- unde7
- urds6
- used6
- user5
- uses5
- weds8
- zeds14