4 letters
- prog9
- prom10
- pros7
- rags6
- rams7
- rebs7
- regs6
- rems7
- rhos6
- ribs7
- rigs6
- rims7
- roam7
- robe7
- robs7
- rocs7
- rods5
- roes4
- romp10
- roms7
- rood5
- roof7
- rook8
- room7
- root4
- rose4
- rosy6
- roto4
- rots4
- rows7
- rubs8
- rugs7
- rums8
- sago6
- sego6
- shmo9
- shog8
- shoo6
- slob8
- slog7
- smog9
- smug10
- snob8
- snog7
- soar4
- sobs7
- solo5
- soma7
- some7
- song7
- sook8
- soon5
- soot4
- sora4
- sorb7
- sord5
- sore4
- sori4
- sorn5
- sort4
- sour5
- stob7
- sumo8
- swob10
- sybo9
- togs6
- tomb10
- toms7
- toom7
- toro4
- tors4
- umbo11
- urbs8
- wogs9
- womb13
- woos7
- worm10
- yobs9
- zoom16
- zoos13