4 letters
- oleo5
- oles5
- olio5
- oohs6
- oops7
- oots4
- orbs7
- ordo5
- ouds6
- owls8
- plod9
- pods8
- polo8
- pols8
- pood8
- pool8
- robs7
- rods5
- rood5
- rook8
- shod7
- shoo6
- sild6
- silk9
- silo5
- skid9
- slab8
- sled6
- slid6
- slob8
- sloe5
- slog7
- slop8
- slot5
- slow8
- slub9
- snob8
- soak8
- sobs7
- sock11
- soda5
- sods5
- soil5
- soke8
- sola5
- sold6
- sole5
- soli5
- solo5
- sols5
- sook8
- soon5
- soot4
- sorb7
- sord5
- souk9
- soul6
- stob7
- sulk10
- swob10
- sybo9
- tods5
- told6
- took8
- tool5
- udos6
- woks11
- wold9
- wood8
- wool8
- woos7
- yobs9
- yods7
- yoks10
- yolk11
- zoos13