‘Do’, ‘see’, and ‘hear’

The verbs meaning ‘do’, ‘see’, and ‘hear’ are irregular only in the past tense. The present and future tenses use the imperative stem and behave entirely like regular first-conjugation verbs, described in Units 11-12. Only the past tense will be discussed here. Each verb uses a distinct past-tense stem for statements; ‘do’ and ‘see’ have separate dependent forms as well.