4 letters
- baps10
- bops10
- bubs11
- buds9
- bugs10
- bump14
- bums11
- buns9
- burp11
- burs8
- bush10
- busk12
- buss8
- bust8
- busy10
- buts8
- buys10
- cubs11
- cups11
- cusp11
- dubs9
- dups9
- fubs11
- hubs10
- nubs9
- opus8
- plus9
- pubs11
- puds9
- pugs10
- puls9
- puns9
- pups11
- purs8
- push10
- puss8
- puts8
- rubs8
- scup11
- slub9
- snub9
- soup8
- spud9
- spue8
- spun9
- spur8
- stub8
- suba8
- subs8
- sump11
- supe8
- sups8
- tubs8
- tups8
- umps11
- upas8
- upby13
- urbs8
- yups10
3 letters
- abs6
- asp6
- bap9
- bas6
- bis6
- bop9
- bos6
- bub10
- bud8
- bug9
- bum10
- bun8
- bur7
- bus7
- but7
- buy9
- bys8
- cub10
- cup10
- dub8
- dup8
- fub10
- hub9
- hup9
- jus13
- mus7
- nub8
- nus5
- ops6
- pas6
- pes6
- pis6
- piu7
- psi6
- pub10
- pud8
- pug9
- pul8
- pun8
- pup10
- pur7
- pus7
- put7
- rub7
- sab6
- sap6
- sau4
- sib6
- sip6
- sob6
- sop6
- sou4
- spa6
- spy8
- sub7
- sue4
- sum7
- sun5
- sup7
- suq13
- tub7
- tup7
- ump10
- uns5
- upo7
- ups7
- urb7
- use4
- uts4
- yup9