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 mustn't recognize you mustn't recognize he mustn't recognize we mustn't recognize you mustn't recognize they mustn't recognize
V-ing form
I mustn't be recognizing you mustn't be recognizing he mustn't be recognizing we mustn't be recognizing you mustn't be recognizing they mustn't be recognizing
Perfect
I mustn't have recognized you mustn't have recognized he mustn't have recognized we mustn't have recognized you mustn't have recognized they mustn't have recognized
V-ing perfect
I mustn't have been recognizing you mustn't have been recognizing he mustn't have been recognizing we mustn't have been recognizing you mustn't have been recognizing they mustn't 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
mustn't I recognize? mustn't you recognize? mustn't he recognize? mustn't we recognize? mustn't you recognize? mustn't they recognize?
V-ing form
mustn't I be recognizing? mustn't you be recognizing? mustn't he be recognizing? mustn't we be recognizing? mustn't you be recognizing? mustn't they be recognizing?
Perfect
mustn't I have recognized? mustn't you have recognized? mustn't he have recognized? mustn't we have recognized? mustn't you have recognized? mustn't they have recognized?
V-ing perfect
mustn't I have been recognizing? mustn't you have been recognizing? mustn't he have been recognizing? mustn't we have been recognizing? mustn't you have been recognizing? mustn't they have been recognizing?