4 letters
- pile8
- pill9
- pine8
- plan9
- plea8
- pleb11
- pled9
- plew11
- plie8
- plug11
- plum12
- plus9
- pole8
- poll9
- pone8
- pouf11
- puce11
- puff14
- pugh12
- puke12
- pula9
- pule9
- puli9
- pull10
- pulp12
- puls9
- puna9
- pung11
- punk13
- puns9
- punt9
- puny11
- pure8
- purl9
- push10
- rule6
- rune6
- self8
- sell6
- shul8
- shun8
- slue6
- spue8
- spun9
- sulu7
- supe8
- tell6
- then7
- tule6
- tune6
- ulan7
- ulna7
- ulus7
- unau7
- unbe9
- unde7
- upon9
- well9
- when10
- yell8
- yelp10
- yule8