Match each base form to its past participle.

Explanation

These past-participle matches draw on 5 verbs using a shared past-and-participle pattern with accepted spelling variants. Use the stored irregular class for the participle: neither an -ed default nor a nearby past-tense shape proves the match; the dominant class is a shared past-and-participle pattern with accepted spelling variants (5 of 5), with 1 pattern class represented.