4 letters
- oily7
- okay10
- oldy8
- olea5
- olla6
- only8
- opal8
- oral5
- orby9
- oval9
- ovum12
- palm11
- paly10
- play10
- ploy10
- poly10
- roam7
- slab8
- slam8
- slay7
- slob8
- sola5
- soma7
- soya6
- sybo9
- toby9
- tola5
- tomb10
- ulva10
- umbo11
- vail9
- vale9
- vamp14
- vary10
- veal9
- vela9
- vial9
- viol9
- vole9
- volt9
- waly10
- wavy13
- womb13
- yald8
- yams9
- yawl10
- ylem10
- yobs9
- yoga8
- yolk11
- yowl10