4 letters
- puts8
- quit14
- rhos6
- rhus7
- ribs7
- riot4
- robs7
- roil5
- roti4
- rotl5
- rots4
- rout5
- rubs8
- rush7
- rust5
- ruth7
- ruts5
- sail5
- salt5
- sati4
- saul6
- scot7
- scut8
- shat6
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- shul8
- shun8
- shut7
- sial5
- sibb10
- sibs7
- sift7
- sigh8
- sild6
- silk9
- sill6
- silo5
- silt5
- sinh7
- site4
- sith6
- sits4
- skit8
- slab8
- slat5
- slid6
- slim8
- slip8
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- smit7
- smut8
- snib8
- snit5
- snob8
- snot5
- snub9
- sobs7
- soft7
- soil5
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soot4
- soph9
- sorb7
- sori4
- sort4
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- spit7
- spot7
- stab7
- stir4
- stoa4
- stob7
- stop7
- stow7
- stub8
- stud6
- stum8
- stun6
- suba8
- subs8
- such10
- suet5
- sugh9
- suit5
- sulk10
- sulu7
- sumo8
- swob10
- swot7
- sybo9
- syli7
- tabs7
- tabu8
- tail5
- tali5
- taos4
- taus5
- tels5
- thin7
- thio6
- thir6
- this6
- thou7
- thro6
- thru7
- thud8
- thug9
- thus7
- tics7
- ties4
- tile5
- till6
- tils5
- tilt5
- tins5
- tips7
- tirl5
- tiro4
- tits4
- toby9
- tods5
- toes4
- tofu8
- togs6
- toil5
- toit4
- tola5
- told6
- tole5
- toll6
- tolu6
- tomb10
- toms7
- tons5
- tool5
- toph9
- topi7
- tops7
- tori4
- tors4
- tosh6
- toss4
- tost4
- tots4
- tour5
- tout5
- tows7
- toys6
- trio4
- tuba8
- tube8
- tubs8
- tugs7
- tuis5
- tule6
- tuns6
- tups8
- tush7
- tusk9
- tuts5
- twos7
- udos6
- ughs9
- ulus7