| Infinitive | Participle | Gerund | Adjective |
|---|---|---|---|
| painstake | painstook | painstaking | painstakable |
| palp | palped | palping | palpable |
| persh | pershed | pershing | pershable |
| poss | possed | possing | possible |
| postpay | postpaid | postpaying | postpayable |
| probe | probed | probing | probable |
| pudd | pudded | pudding | puddly |