4 letters
- open8
- opes7
- opus8
- orcs7
- ores4
- oses4
- ossa4
- ouch10
- ouds6
- ouph10
- ours5
- oust5
- outs5
- oven9
- owes7
- owns8
- owse7
- oxen12
- oxes11
- oyes6
- pech12
- peck14
- pecs10
- pehs9
- pens8
- peon8
- peso7
- phon10
- pock14
- poke11
- pone8
- pons8
- pose7
- posh9
- puce11
- puck15
- puke12
- punk13
- puns9
- push10
- puss8
- reck11
- recs7
- resh6
- rhos6
- rhus7
- rock11
- rocs7
- roes4
- rose4
- roue5
- ruck12
- rues5
- rune6
- runs6
- ruse5
- rush7
- rusk9
- sack11
- sacs7
- sake8
- sane5
- sank9
- sans5
- sash6
- scan8
- scop10
- scot7
- scow10
- scud9
- scum11
- scup11
- scut8
- seas4
- secs7
- sect7
- seek8
- seen5
- sees4
- sego6
- segs6
- seis4
- sels5
- send6
- sene5
- sent5
- sers4
- sets4
- sewn8
- sews7
- shea6
- shed7
- shes6
- shew9
- shin7
- shmo9
- shod7
- shoe6
- shog8
- shoo6
- shop9
- shot6
- show9
- shul8
- shun8
- shut7
- sice7
- sick11
- sics7
- sike8
- sine5
- sinh7
- sink9
- sins5
- skas8
- skee8
- skeg10
- skep11
- skew11
- skin9
- skis8
- skua9
- sloe5
- slue6
- sned6
- snob8
- snog7
- snot5
- snow8
- snub9
- snug8
- snye7
- soak8
- sobs7
- sock11
- sods5
- soke8
- sole5
- sols5
- some7
- sone5
- song7
- sons5
- sook8
- soon5
- soph9
- sops7
- sore4
- sorn5
- soth6
- sots4
- souk9
- soul6
- soup8
- sour5
- sous5
- sown8
- sows7
- soys6
- spec10
- spue8
- spun9
- stun6
- subs8
- such10
- suck12
- suds6
- sued6
- suer5
- sues5
- suet5
- sugh9
- sulk10
- sumo8
- sums8
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- suqs14
- sure5
- suss5
- syce9
- syke10
- sync10
- syne7
- tens5
- then7
- thou7
- thus7
- toes4
- toke8
- tone5
- tons5
- tosh6
- toss4
- tsks8
- tuck12