4 letters
- omit7
- oohs6
- oses4
- ossa4
- owls8
- oxim14
- phis9
- pish9
- piso7
- piss7
- pois7
- pols8
- poms10
- posh9
- psis7
- rhos6
- rims7
- roil5
- roms7
- sail5
- sals5
- sash6
- seis4
- sels5
- semi7
- sham9
- shes6
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- shul8
- sial5
- sibs7
- sics7
- sigh8
- sild6
- silk9
- sill6
- silo5
- silt5
- sima7
- simp10
- sims7
- sinh7
- sins5
- sips7
- sirs4
- sith6
- sits4
- skim11
- skis8
- slam8
- slid6
- slim8
- slip8
- slit5
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slum9
- smit7
- smog9
- sobs7
- sods5
- soil5
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- soma7
- some7
- sons5
- soph9
- sops7
- sori4
- soth6
- sots4
- soul6
- sous5
- sows7
- soys6
- sris4
- sumo8
- sums8
- swim10
- syli7
- thio6
- this6
- tils5
- toil5
- toms7
- tosh6
- toss4
- vims11
- viol9
- whim12
- whom12
- wish9
- wiss7