4 letters
- pips10
- pipy12
- pirn8
- plan9
- plea8
- pleb11
- pled9
- plew11
- plie8
- plop11
- plug11
- pole8
- pone8
- pong10
- pope10
- prep10
- prig9
- pule9
- puli9
- pulp12
- pung11
- pyin10
- rein5
- repp10
- riel5
- rile5
- ring7
- ripe7
- sign7
- sine5
- sing7
- sipe7
- slip8
- snip8
- spin8
- tile5
- tine5
- ting7
- veil9
- vein9
- vile9
- vine9
- wile8
- wine8
- wing10
- wipe10
- yelp10
- yipe9
- zein14
- zing16