4 letters
- raps7
- rase4
- rash6
- rasp7
- rath6
- rato4
- rats4
- raws7
- rays6
- refs7
- resh6
- rhea6
- rhos6
- rhus7
- rias4
- rifs7
- road5
- roam7
- roan5
- roar4
- robs7
- rocs7
- rods5
- roes4
- rolf8
- roms7
- roof7
- rose4
- rosy6
- rota4
- rots4
- rows7
- rush7
- ryas6
- safe7
- sago6
- sard5
- sari4
- sark8
- sash6
- scar7
- sear4
- sera4
- serf7
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shri6
- soak8
- soap7
- soar4
- soda5
- sofa7
- soft7
- soja13
- sola5
- soma7
- soph9
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soth6
- sour5
- soya6
- spar7
- star4
- stoa4
- sura5
- surf8
- tahr6
- taos4
- taro4
- tars4
- thro6
- tora4
- tors4
- tosh6
- tsar4
- ursa5
- vars8
- wars7
- wash9
- whoa9
- zarf16