4 letters
- pile8
- pima10
- pina8
- pine8
- pirn8
- plan9
- plea8
- plie8
- plum12
- pram10
- prau8
- prim10
- puce11
- pula9
- pule9
- puli9
- puma11
- puna9
- pure8
- puri8
- purl9
- race7
- raia4
- rail5
- rain5
- rale5
- rami7
- ramp10
- rani5
- rape7
- real5
- ream7
- reap7
- rein5
- rhea6
- rial5
- rice7
- rich9
- riel5
- rile5
- rime7
- ripe7
- ruin6
- rule6
- rump11
- rune6
- ulan7
- ulna7
- unai6
- unci9
- urea5
- uric8