indicates a later action as in nacharbeiten, nachbessern / indicates following or pursuit of someone or something, as in nachgehen, nachfahren / indicates repetition or succession, as in nachfüllen, nachkaufen; to check something nachzählen, nachprüfen / indicates repetition or succession, as in nachfüllen, nachkaufen; to improve something, as in nachfärben (“redye”), nachhelfen (“give extra help; private lessons”) / indicates the exact copying of something as in nachmachen, nachdrucken (“reprint”), nachahmen, nachbeten / indicates a purposeful action, as in nachdenken, nachforschen