4 letters
- scam10
- scan8
- scat7
- scum11
- scup11
- scut8
- seam7
- seat4
- sent5
- sept7
- seta4
- sham9
- shat6
- shay8
- shun8
- shut7
- sima7
- simp10
- skat8
- skua9
- slam8
- slap8
- slat5
- slay7
- slum9
- slut6
- smit7
- smug10
- smut8
- snag7
- snap8
- snaw8
- snip8
- snit5
- snot5
- snub9
- snug8
- snye7
- soap7
- soma7
- soup8
- soya6
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spin8
- spit7
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stem7
- step7
- stey6
- stoa4
- stop7
- stub8
- stud6
- stum8
- stun6
- stye6
- suba8
- suet5
- suit5
- sumo8
- sump11
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sura5
- swam10
- swan8
- swap10
- swat7
- sway9
- swum11
- sync10
- syne7
- syph11
- tabs7
- tabu8
- tads5
- tags6
- tain5
- tame7
- tamp10
- tams7
- tang7
- tank9
- tans5
- taos4
- tapa7
- tape7
- taps7
- tarn5
- tarp7
- tars4
- task8
- tass4
- tats4
- taus5
- taut5
- tavs8
- taws7
- team7
- teas4
- temp10
- tens5
- tepa7
- than7
- thus7
- tins5
- tiny7
- tips7
- toms7
- tons5
- tony7
- tops7
- toys6
- tram7
- trap7
- tray6
- tsar4
- tuba8
- tubs8
- tufa8
- tugs7
- tuis5
- tump11
- tuna6
- tune6
- tung8
- tuns6
- tups8
- turn6
- tush7
- tusk9
- tuts5
- twas7
- tyes6
- tyin7
- tyne7
- type9
- typo9
- typp12
- typy11
- ulan7
- ulna7
- umps11
- unai6
- unau7
- undy9
- unit6
- unto6
- upas8
- upby13
- upon9
- urns6
- ursa5
- utas5
- vamp14
- vans9
- vast8
- vats8
- vatu9
- vaus9
- wans8
- want8
- wany10
- waps10
- wasp10
- wast7
- wats7
- ways9
- wyns10
- xyst13
- yaks10
- yams9
- yang9
- yank11
- yaps9
- yarn7
- yaud8