4 letters
- rune6
- rung8
- runs6
- runt6
- ruse5
- rush7
- rusk9
- rust5
- ruth7
- ruts5
- ryes6
- sabe7
- sain5
- sane5
- sari4
- sate4
- sati4
- scup11
- scut8
- sear4
- seat4
- sect7
- seen5
- seep7
- seer4
- seif7
- seis4
- semi7
- send6
- sene5
- sent5
- sept7
- sera4
- sere4
- serf7
- sers4
- seta4
- sets4
- sett4
- sewn8
- sext11
- shat6
- shea6
- shed7
- shes6
- shew9
- shim9
- shin7
- ship9
- shit6
- shiv10
- shoe6
- shop9
- shot6
- shri6
- shul8
- shun8
- shut7
- sibb10
- sibs7
- sice7
- side5
- sift7
- sigh8
- sign7
- sike8
- silt5
- simp10
- sine5
- sing7
- sinh7
- sink9
- sins5
- sipe7
- sips7
- sire4
- sirs4
- site4
- sith6
- sits4
- size13
- skep11
- skin9
- skip11
- skit8
- slip8
- slit5
- slub9
- slue6
- slur6
- slut6
- smit7
- smut8
- snap8
- sned6
- snib8
- snip8
- snit5
- snob8
- snot5
- snub9
- snug8
- snye7
- sone5
- soph9
- sorb7
- sore4
- sori4
- sorn5
- sort4
- soth6
- soup8
- sour5
- spae7
- span8
- spar7
- spat7
- spec10
- sped8
- spew10
- spic10
- spik11
- spin8
- spit7
- spiv11
- spot7
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- stab7
- star4
- stem7
- step7
- stet4
- stew7
- stey6
- stir4
- stob7
- stop7
- stub8
- stud6
- stum8
- stun6
- stye6
- suba8
- subs8
- such10
- sued6
- suer5
- sues5
- suet5
- sugh9
- suit5
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sura5
- surd6
- sure5
- surf8
- syne7
- syph11
- tabs7
- tabu8
- tahr6
- tain5
- tans5
- tape7
- taps7
- tare4
- tarn5
- tarp7
- tars4
- taus5
- tear4
- teas4
- teds5
- teen5
- tees4
- tegs6
- tels5
- temp10
- tend6
- tens5
- tent5
- tepa7
- term7
- tern5
- test4
- teth6
- tets4
- tews7
- thae6