4 letters
- rapt7
- rase4
- rash6
- rasp7
- rate4
- rath6
- rato4
- rats4
- raws7
- rays6
- resh6
- rest4
- rets4
- rhea6
- rhos6
- rhus7
- rias4
- risk8
- rota4
- rots4
- rush7
- rusk9
- rust5
- ruth7
- ruts5
- ryas6
- sabs7
- sack11
- sacs7
- sags6
- sake8
- saki8
- sals5
- salt5
- sank9
- sans5
- saps7
- sard5
- sari4
- sark8
- sash6
- sass4
- sate4
- sati4
- saws7
- says6
- scar7
- scat7
- sear4
- seas4
- seat4
- sera4
- sers4
- seta4
- sets4
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shes6
- shit6
- shot6
- shri6
- shut7
- sirs4
- sith6
- sits4
- skag10
- skas8
- skat8
- skis8
- skit8
- skua9
- slat5
- soak8
- soar4
- sora4
- sort4
- soth6
- sots4
- spar7
- spas7
- spat7
- sris4
- stab7
- stag6
- star4
- stat4
- staw7
- stay6
- stir4
- stoa4
- sura5
- swat7
- tabs7
- tach9
- tack11
- tads5
- tags6
- tahr6
- taka8
- take8
- talk9
- tams7
- tank9
- tans5
- taos4
- taps7
- tare4
- tarn5
- taro4
- tarp7
- tars4
- tart4
- task8
- tass4
- tats4
- taus5
- tavs8
- taws7
- teak8
- tear4
- teas4
- thae6
- than7
- that6
- thaw9
- thir6
- this6
- thro6
- thru7
- thus7
- tora4
- tors4
- tosh6
- toss4
- trad5
- tram7
- trap7
- tray6
- trek8
- tsar4
- tsks8
- turk9
- tush7
- tusk9
- twas7
- tzar13
- ursa5
- utas5
- vars8
- vast8
- vats8
- wark11
- wars7
- wart7
- wash9
- wast7
- wats7
- what9
- yaks10