Go to: weak verbs in '-d' and weak verbs formed with -t. There is one verb that is irregular and weak in the past tense, but strong in the the non-progressive participle: do, did, done. A few verbs ...

Irregular verbs work in a very similar way to regular verbs. However, if the verb is irregular, you need to use the irregular verb stem then add slightly different endings. The irregular imperfect ...