For a regular German verb, the infinitive, first person plural and third person plural are the same - e.g. fahren; wir fahren; sie fahren.
For almost all of the common irregular verbs I've seen, this also seems to be the case - e.g. haben; wir haben; sie haben.
Sein is an exception, but even here the first and third person plural forms are the same - sein; wir sind; sie sind.
- Are there any other irregular verbs in which the infinitive and first/third plural forms differ?
- Are there any verbs in which the first and third person plural forms differ?