4 letters
- scam10
- scan8
- scar7
- scat7
- scud9
- scum11
- scup11
- scut8
- seam7
- semi7
- sham9
- shim9
- sial5
- sice7
- sick11
- sics7
- sima7
- simp10
- sims7
- skim11
- skua9
- slam8
- slim8
- slum9
- smit7
- smug10
- smut8
- soma7
- spam10
- spic10
- stum8
- suba8
- such10
- suck12
- suit5
- sumo8
- sump11
- sums8
- sura5
- swam10
- swim10
- swum11
- tams7
- taus5
- tics7
- tuis5
- umps11
- unai6
- unci9
- upas8
- uric8
- ursa5
- utas5
- vacs11
- vaus9
- vims11
- visa8
- yams9
- yuca10