4 letters
- rums8
- runs6
- ruse5
- rush7
- rusk9
- rust5
- ruts5
- ryas6
- sabs7
- sacs7
- sadi5
- sags6
- said5
- sail5
- sain5
- saki8
- salp8
- sals5
- same7
- samp10
- sans5
- saps7
- sard5
- sari4
- sark8
- sash6
- sass4
- sati4
- saul6
- saws7
- says6
- scam10
- scar7
- scum11
- scup11
- seam7
- sear4
- seas4
- seis4
- semi7
- sera4
- sers4
- sham9
- shim9
- ship9
- shri6
- sial5
- sibs7
- sics7
- sima7
- simp10
- sims7
- sins5
- sipe7
- sips7
- sire4
- sirs4
- sits4
- skas8
- skim11
- skip11
- skis8
- skua9
- slam8
- slap8
- slim8
- slip8
- slum9
- slur6
- smit7
- smug10
- smut8
- snap8
- snip8
- soap7
- soar4
- soma7
- sops7
- sora4
- sori4
- soup8
- sour5
- sous5
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spic10
- spik11
- spin8
- spit7
- spiv11
- spry9
- spud9
- spue8
- spun9
- spur8
- sris4
- star4
- stir4
- stum8
- suba8
- subs8
- suds6
- suer5
- sues5
- suit5
- sulu7
- sumo8
- sump11
- sums8
- suns6
- supe8
- sups8
- suqs14
- sura5
- surd6
- sure5
- surf8
- suss5
- swam10
- swap10
- swim10
- swum11
- tamp10
- tams7
- taps7
- tarp7
- tars4
- tass4
- taus5
- tips7
- tram7
- trap7
- trim7
- trip7
- tsar4
- tuis5
- tump11
- tups8
- ulus7
- umps11
- unai6
- unau7
- upas8
- urbs8
- urds6
- urea5
- uric8
- urns6
- ursa5
- urus6
- user5
- uses5
- utas5
- vair8
- vamp14
- vars8
- vaus9
- vims11
- visa8
- wair7
- waps10
- warm10
- warp10
- wars7
- wasp10
- waur8
- wimp13
- wisp10
- wiss7
- wrap10
- wuss8
- yams9
- yaps9
- yaup10
- yips9
- yups10
- zaps16
- zips16