I must recognize you must recognize he must recognize we must recognize you must recognize they must recognize
V-ing form
I must be recognizing you must be recognizing he must be recognizing we must be recognizing you must be recognizing they must be recognizing
Perfect
I must have recognized you must have recognized he must have recognized we must have recognized you must have recognized they must have recognized
V-ing perfect
I must have been recognizing you must have been recognizing he must have been recognizing we must have been recognizing you must have been recognizing they must have been recognizing
Negation
Simple form
I must not recognize you must not recognize he must not recognize we must not recognize you must not recognize they must not recognize
V-ing form
I must not be recognizing you must not be recognizing he must not be recognizing we must not be recognizing you must not be recognizing they must not be recognizing
Perfect
I must not have recognized you must not have recognized he must not have recognized we must not have recognized you must not have recognized they must not have recognized
V-ing perfect
I must not have been recognizing you must not have been recognizing he must not have been recognizing we must not have been recognizing you must not have been recognizing they must not have been recognizing
Interrogative form
Simple form
must I recognize? must you recognize? must he recognize? must we recognize? must you recognize? must they recognize?
V-ing form
must I be recognizing? must you be recognizing? must he be recognizing? must we be recognizing? must you be recognizing? must they be recognizing?
Perfect
must I have recognized? must you have recognized? must he have recognized? must we have recognized? must you have recognized? must they have recognized?
V-ing perfect
must I have been recognizing? must you have been recognizing? must he have been recognizing? must we have been recognizing? must you have been recognizing? must they have been recognizing?
Interro-negative form
Simple form
must I not recognize? must you not recognize? must he not recognize? must we not recognize? must you not recognize? must they not recognize?
V-ing form
must I not be recognizing? must you not be recognizing? must he not be recognizing? must we not be recognizing? must you not be recognizing? must they not be recognizing?
Perfect
must I not have recognized? must you not have recognized? must he not have recognized? must we not have recognized? must you not have recognized? must they not have recognized?
V-ing perfect
must I not have been recognizing? must you not have been recognizing? must he not have been recognizing? must we not have been recognizing? must you not have been recognizing? must they not have been recognizing?