Regular verb: quarterback - quarterbacked - quarterbacked
Simple form | V-ing form |
I must quarterback you must quarterback he must quarterback we must quarterback you must quarterback they must quarterback | I must be quarterbacking you must be quarterbacking he must be quarterbacking we must be quarterbacking you must be quarterbacking they must be quarterbacking |
Perfect | V-ing perfect |
I must have quarterbacked you must have quarterbacked he must have quarterbacked we must have quarterbacked you must have quarterbacked they must have quarterbacked | I must have been quarterbacking you must have been quarterbacking he must have been quarterbacking we must have been quarterbacking you must have been quarterbacking they must have been quarterbacking |
Simple form | V-ing form |
I must not quarterback you must not quarterback he must not quarterback we must not quarterback you must not quarterback they must not quarterback | I must not be quarterbacking you must not be quarterbacking he must not be quarterbacking we must not be quarterbacking you must not be quarterbacking they must not be quarterbacking |
Perfect | V-ing perfect |
I must not have quarterbacked you must not have quarterbacked he must not have quarterbacked we must not have quarterbacked you must not have quarterbacked they must not have quarterbacked | I must not have been quarterbacking you must not have been quarterbacking he must not have been quarterbacking we must not have been quarterbacking you must not have been quarterbacking they must not have been quarterbacking |
Simple form | V-ing form |
must I quarterback? must you quarterback? must he quarterback? must we quarterback? must you quarterback? must they quarterback? | must I be quarterbacking? must you be quarterbacking? must he be quarterbacking? must we be quarterbacking? must you be quarterbacking? must they be quarterbacking? |
Perfect | V-ing perfect |
must I have quarterbacked? must you have quarterbacked? must he have quarterbacked? must we have quarterbacked? must you have quarterbacked? must they have quarterbacked? | must I have been quarterbacking? must you have been quarterbacking? must he have been quarterbacking? must we have been quarterbacking? must you have been quarterbacking? must they have been quarterbacking? |
Simple form | V-ing form |
must I not quarterback? must you not quarterback? must he not quarterback? must we not quarterback? must you not quarterback? must they not quarterback? | must I not be quarterbacking? must you not be quarterbacking? must he not be quarterbacking? must we not be quarterbacking? must you not be quarterbacking? must they not be quarterbacking? |
Perfect | V-ing perfect |
must I not have quarterbacked? must you not have quarterbacked? must he not have quarterbacked? must we not have quarterbacked? must you not have quarterbacked? must they not have quarterbacked? | must I not have been quarterbacking? must you not have been quarterbacking? must he not have been quarterbacking? must we not have been quarterbacking? must you not have been quarterbacking? must they not have been quarterbacking? |