Provide the six perfect indicative active forms for each of these verbs. You may use the special keyboard to insert long marks. If the verb has no 4th principal part, enter "none." Click on the "Check" button to check your answers. Use the "Hint" button to get a free letter. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!