Verbs in which two of the three forms are the same ( keep – kept – kept). These are: Verbs in which all the three forms are the same ( cut – cut – cut). Irregular verbs do not follow this pattern. Regular verbs form their past and past participle forms by adding –ed ( jumped - played - watched).
Verbs in English can be regular or irregular. Regular and Irregular Verb Examples: What is an Irregular Verb?