German has regular and irregular verbs.

The majority of verbs are regular, meaning that their stem doesn't change when they are conjugated. Their endings change according to the person and number of the subject.

For some regular verbs, an -e- is inserted before the ending in the 2nd and 3rd person singular and the 2nd person plural to make pronunciation easier:

For almost all verbs, the 1st and 3rd person plural in the present tense are the same as the infinitive.