4 letters
- rain5
- rani5
- rape7
- raps7
- rare4
- rase4
- rash6
- rasp7
- reap7
- rear4
- recs7
- rein5
- reis4
- repo7
- reps7
- resh6
- rhea6
- rhos6
- rias4
- rice7
- rich9
- rins5
- ripe7
- rips7
- rise4
- roan5
- roar4
- rocs7
- roes4
- rope7
- rose4
- sacs7
- sain5
- sane5
- sans5
- saps7
- sari4
- sash6
- scan8
- scar7
- scop10
- sear4
- seas4
- secs7
- seis4
- sera4
- sers4
- shea6
- shes6
- shin7
- ship9
- shoe6
- shop9
- shri6
- sice7
- sics7
- sine5
- sinh7
- sins5
- sipe7
- sips7
- sire4
- sirs4
- snap8
- snip8
- soap7
- soar4
- sone5
- sons5
- soph9
- sops7
- sora4
- sore4
- sori4
- sorn5
- spae7
- span8
- spar7
- spas7
- spec10
- spic10
- spin8
- sris4