4 letters
- omer7
- once8
- ones5
- onto5
- oohs6
- ooze13
- open8
- orbs7
- orby9
- ordo5
- ores4
- orle5
- orzo13
- oven9
- over8
- oxen12
- oyer6
- peon8
- phon10
- pone8
- pooh9
- poon8
- poor7
- pore7
- porn8
- rebs7
- redo5
- rein5
- rend6
- rent5
- repo7
- resh6
- rhea6
- rhos6
- roan5
- robe7
- robs7
- rode5
- roes4
- role5
- rood5
- roof7
- rook8
- room7
- root4
- rope7
- rose4
- rote4
- roto4
- roue5
- rove8
- rube8
- rune6
- shoe6
- shoo6
- snob8
- sone5
- soon5
- sorb7
- sore4
- sorn5
- tern5
- then7
- thro6
- tone5
- toon5
- tore4
- torn5
- toro4
- unbe9
- verb11
- when10
- wore7
- worn8
- wren8
- yore6
- zero13
- zone14
- zoon14