4 letters
- ruin6
- rule6
- rump11
- rums8
- rune6
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruth7
- ruts5
- ryes6
- same7
- samp10
- sari4
- sate4
- sati4
- save8
- scum11
- scup11
- scut8
- seam7
- sear4
- seat4
- sect7
- seed5
- seek8
- seel5
- seem7
- seen5
- seep7
- seer4
- sees4
- seif7
- seis4
- seme7
- semi7
- sene5
- sent5
- sept7
- sera4
- sere4
- serf7
- sers4
- seta4
- sets4
- sett4
- sext11
- shim9
- ship9
- shit6
- shiv10
- shri6
- shut7
- sice7
- side5
- sift7
- sike8
- silt5
- sima7
- simp10
- sims7
- sine5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- size13
- skee8
- skep11
- skim11
- skip11
- skit8
- slim8
- slip8
- slit5
- slue6
- slum9
- slur6
- slut6
- smew10
- smit7
- smug10
- smut8
- snip8
- snit5
- some7
- sore4
- sori4
- sort4
- soup8
- sour5
- spae7
- spam10
- spar7
- spat7
- spec10
- sped8
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- star4
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stop7
- stub8
- stud6
- stum8
- stun6
- stye6
- sued6
- suer5
- sues5
- suet5
- suit5
- sumo8
- sump11
- sums8
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- swim10
- swum11
- tame7
- tamp10
- tams7
- tape7
- taps7
- tare4
- tarp7
- tars4
- taus5
- tavs8
- team7
- tear4
- teas4
- teds5
- teed5
- teel5
- teem7
- teen5
- tees4
- tegs6
- tele5
- tels5
- temp10
- tens5
- tepa7
- term7
- tern5
- test4
- tets4
- tews7
- thee6
- them9
- thir6
- this6
- thru7
- thus7
- tics7
- tide5
- tied5
- tier4
- ties4
- tike8
- tile5
- tils5
- time7
- tine5
- tins5
- tipi7
- tips7
- tire4
- tirl5
- tiro4
- tits4
- tivy10
- toes4