4 letters
- pirn8
- pish9
- pita7
- pith9
- plan9
- porn8
- pram10
- prao7
- prat7
- prau8
- pray9
- prig9
- prim10
- proa7
- puna9
- puri8
- pyin10
- raga6
- ragi6
- raia4
- raid5
- rail5
- rain5
- raja13
- raki8
- rami7
- ramp10
- rand6
- rang7
- rani5
- rank9
- rant5
- rape7
- raps7
- rapt7
- rash6
- rasp7
- rath6
- raya6
- reap7
- rein5
- rhea6
- rial5
- rias4
- rich9
- rind6
- ring7
- rink9
- rins5
- ripe7
- rips7
- roan5
- ruin6
- sain5
- sari4
- shin7
- ship9
- shri6
- sinh7
- snap8
- snip8
- span8
- spar7
- spin8
- tahr6
- tain5
- tapa7
- tarn5
- tarp7
- than7
- thin7
- thir6
- trap7
- trip7
- unai6
- vain9
- vair8
- vara8
- vina9
- wain8
- wair7
- warn8
- warp10
- whap12
- whin10
- whip12
- whir9
- wrap10
- yarn7