4 letters
- nips8
- nous6
- nubs9
- null8
- nuns7
- nurl7
- nuts6
- oafs7
- onus6
- opal8
- opus8
- pacs10
- pads8
- pail8
- pain8
- pale8
- pall9
- palm11
- palp11
- pals8
- paly10
- pams10
- pane8
- pang10
- pans8
- pant8
- paps10
- pars7
- pase7
- pash9
- pass7
- past7
- pats7
- pawl11
- pawn11
- paws10
- pays9
- peal8
- pean8
- peas7
- pelf11
- pens8
- pfui11
- pial8
- pian8
- pias7
- pina8
- pins8
- plan9
- plat8
- play10
- plea8
- plug11
- plum12
- plus9
- pols8
- pons8
- pouf11
- prau8
- pubs11
- puds9
- puff14
- pugs10
- puja17
- pula9
- pule9
- puli9
- pull10
- pulp12
- puls9
- puma11
- puna9
- pung11
- punk13
- puns9
- punt9
- puny11
- pupa11
- pups11
- purl9
- purs8
- push10
- puss8
- puts8
- pyas9
- raps7
- rasp7
- runs6
- safe7
- sail5
- sain5
- sale5
- sall6
- salp8
- sals5
- salt5
- samp10
- sand6
- sane5
- sang7
- sank9
- sans5
- saps7
- saul6
- sawn8
- scan8
- scup11
- seal5
- self8
- shul8
- shun8
- sial5
- skua9
- slab8
- slag7
- slam8
- slap8
- slat5
- slaw8
- slay7
- slip8
- slop8
- slub9
- slue6
- slug8
- slum9
- slur6
- slut6
- snag7
- snap8
- snaw8
- snip8
- snub9
- snug8
- soap7
- sofa7
- sola5
- soul6
- soup8
- spae7
- spam10
- span8
- spar7
- spas7
- spat7
- spay9
- spaz16
- spin8
- spud9
- spue8
- spun9
- spur8
- stun6
- suba8
- sulk10
- sulu7
- sump11
- sung8
- sunk10
- sunn7
- suns6
- supe8
- sups8
- sura5
- surf8
- swan8
- swap10
- tans5
- taps7
- taus5
- tufa8
- tuna6
- tuns6
- tups8
- ulan7
- ulna7
- ulus7
- ulva10
- umps11
- unai6
- unau7
- upas8
- upon9
- urns6
- ursa5
- utas5
- vans9
- vaus9
- wans8
- waps10
- wasp10
- waul9
- yaps9
- yaup10
- yuan8
- yups10
- zaps16