4 letters
- revs8
- rhos6
- riel5
- rile5
- rill6
- rise4
- roar4
- robe7
- robs7
- rocs7
- rode5
- rods5
- roes4
- roil5
- role5
- rolf8
- roll6
- roms7
- rope7
- rose4
- rosy6
- rote4
- rotl5
- rots4
- roue5
- rove8
- rows7
- ruer5
- rues5
- rule6
- ruse5
- ryes6
- sale5
- sall6
- seal5
- sear4
- seel5
- seer4
- sego6
- self8
- sell6
- sels5
- sera4
- sere4
- serf7
- sers4
- shoe6
- sill6
- silo5
- sire4
- sled6
- slew8
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slue6
- slur6
- soar4
- soil5
- soke8
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- some7
- sone5
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- soul6
- sour5
- suer5
- sure5
- tell6
- tels5
- toes4
- tole5
- toll6
- tore4
- torr4
- tors4
- user5
- voes8
- vole9
- well9
- woes7
- wore7
- yell8
- yore6
- zero13