4 letters
- pith9
- plot8
- poll9
- polo8
- poof10
- pooh9
- pool8
- rift7
- rill6
- riot4
- roil5
- rolf8
- roll6
- roof7
- root4
- roti4
- rotl5
- roto4
- shit6
- shoo6
- shot6
- sift7
- sill6
- silo5
- silt5
- sith6
- slit5
- slot5
- soft7
- soil5
- soli5
- solo5
- soot4
- soth6
- tail5
- tali5
- tall6
- tell6
- thin7
- thio6
- thir6
- this6
- thou7
- thro6
- tiff10
- tile5
- till6
- tils5
- tilt5
- tirl5
- tiro4
- toff10
- toft7
- tofu8
- toil5
- toit4
- tola5
- told6
- tole5
- toll6
- tolu6
- took8
- tool5
- toom7
- toon5
- toot4
- toph9
- topi7
- tori4
- toro4
- tosh6
- toyo6
- trio4
- vill10
- viol9
- volt9
- whit9
- will9
- wilt8
- with9
- wolf11
- woof10
- wool8
- yill8
- zill15