4 letters
- rhea6
- rhos6
- rhus7
- rias4
- rich9
- rick11
- risk8
- rock11
- rocs7
- ruck12
- rush7
- rusk9
- ryas6
- sack11
- sacs7
- sake8
- saki8
- sank9
- sard5
- sari4
- sark8
- sash6
- scab10
- scad8
- scag9
- scam10
- scan8
- scar7
- scat7
- scry9
- sear4
- sera4
- shad7
- shag8
- shah8
- sham9
- shat6
- shaw9
- shay8
- shea6
- shri6
- sick11
- skag10
- skas8
- skat8
- skua9
- soak8
- soar4
- sock11
- sora4
- spar7
- star4
- such10
- suck12
- sura5
- tach9
- tack11
- tahr6
- tars4
- task8
- tsar4
- ursa5
- vacs11
- vars8
- wack14
- wark11
- wars7
- wash9
- yack13
- yaks10