4 letters
- rifs7
- rigs6
- rims7
- rins5
- riot4
- rips7
- rise4
- risk8
- robs7
- rock11
- rocs7
- rods5
- roes4
- roil5
- roms7
- rose4
- rosy6
- roti4
- rots4
- rows7
- rush7
- sacs7
- sari4
- sash6
- scar7
- scop10
- scot7
- scow10
- scry9
- secs7
- seis4
- sers4
- shes6
- shim9
- shin7
- ship9
- shit6
- shiv10
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- sibs7
- sice7
- sick11
- sics7
- sigh8
- silo5
- sims7
- sinh7
- sins5
- sips7
- sire4
- sirs4
- sith6
- sits4
- skis8
- soar4
- sobs7
- sock11
- sods5
- soil5
- soli5
- sols5
- sons5
- soph9
- sops7
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sots4
- sour5
- sous5
- sows7
- soys6
- spic10
- sris4
- stir4
- such10
- thio6
- thir6
- this6
- thro6
- tics7
- tiro4
- torc7
- tori4
- tors4
- tosh6
- toss4
- trio4
- uric8
- whir9
- wich12
- wish9
- wiss7
- zoic16
- zori13