I must depress you must depress he must depress we must depress you must depress they must depress
V-ing form
I must be depressing you must be depressing he must be depressing we must be depressing you must be depressing they must be depressing
Perfect
I must have depressed you must have depressed he must have depressed we must have depressed you must have depressed they must have depressed
V-ing perfect
I must have been depressing you must have been depressing he must have been depressing we must have been depressing you must have been depressing they must have been depressing
Negation
Simple form
I must not depress you must not depress he must not depress we must not depress you must not depress they must not depress
V-ing form
I must not be depressing you must not be depressing he must not be depressing we must not be depressing you must not be depressing they must not be depressing
Perfect
I must not have depressed you must not have depressed he must not have depressed we must not have depressed you must not have depressed they must not have depressed
V-ing perfect
I must not have been depressing you must not have been depressing he must not have been depressing we must not have been depressing you must not have been depressing they must not have been depressing
Interrogative form
Simple form
must I depress? must you depress? must he depress? must we depress? must you depress? must they depress?
V-ing form
must I be depressing? must you be depressing? must he be depressing? must we be depressing? must you be depressing? must they be depressing?
Perfect
must I have depressed? must you have depressed? must he have depressed? must we have depressed? must you have depressed? must they have depressed?
V-ing perfect
must I have been depressing? must you have been depressing? must he have been depressing? must we have been depressing? must you have been depressing? must they have been depressing?
Interro-negative form
Simple form
must I not depress? must you not depress? must he not depress? must we not depress? must you not depress? must they not depress?
V-ing form
must I not be depressing? must you not be depressing? must he not be depressing? must we not be depressing? must you not be depressing? must they not be depressing?
Perfect
must I not have depressed? must you not have depressed? must he not have depressed? must we not have depressed? must you not have depressed? must they not have depressed?
V-ing perfect
must I not have been depressing? must you not have been depressing? must he not have been depressing? must we not have been depressing? must you not have been depressing? must they not have been depressing?