4 letters
- scar7
- scat7
- scud9
- scum11
- scup11
- scut8
- seam7
- sham9
- sick11
- sima7
- skag10
- skas8
- skat8
- skim11
- skua9
- slam8
- slum9
- smug10
- smut8
- soak8
- sock11
- soma7
- souk9
- spam10
- stum8
- suba8
- such10
- suck12
- sulk10
- sulu7
- sumo8
- sump11
- sums8
- sunk10
- sura5
- swam10
- swum11
- tack11
- tams7
- task8
- taus5
- tuck12
- tusk9
- ukes9
- ulus7
- umps11
- unau7
- upas8
- ursa5
- urus6
- utas5
- vacs11
- vaus9
- wack14
- wauk12
- yack13
- yaks10
- yams9
- yuca10
- yuck14
- yuks11