I must realize you must realize he must realize we must realize you must realize they must realize
V-ing form
I must be realizing you must be realizing he must be realizing we must be realizing you must be realizing they must be realizing
Perfect
I must have realized you must have realized he must have realized we must have realized you must have realized they must have realized
V-ing perfect
I must have been realizing you must have been realizing he must have been realizing we must have been realizing you must have been realizing they must have been realizing
Negation
Simple form
I mustn't realize you mustn't realize he mustn't realize we mustn't realize you mustn't realize they mustn't realize
V-ing form
I mustn't be realizing you mustn't be realizing he mustn't be realizing we mustn't be realizing you mustn't be realizing they mustn't be realizing
Perfect
I mustn't have realized you mustn't have realized he mustn't have realized we mustn't have realized you mustn't have realized they mustn't have realized
V-ing perfect
I mustn't have been realizing you mustn't have been realizing he mustn't have been realizing we mustn't have been realizing you mustn't have been realizing they mustn't have been realizing
Interrogative form
Simple form
must I realize? must you realize? must he realize? must we realize? must you realize? must they realize?
V-ing form
must I be realizing? must you be realizing? must he be realizing? must we be realizing? must you be realizing? must they be realizing?
Perfect
must I have realized? must you have realized? must he have realized? must we have realized? must you have realized? must they have realized?
V-ing perfect
must I have been realizing? must you have been realizing? must he have been realizing? must we have been realizing? must you have been realizing? must they have been realizing?
Interro-negative form
Simple form
mustn't I realize? mustn't you realize? mustn't he realize? mustn't we realize? mustn't you realize? mustn't they realize?
V-ing form
mustn't I be realizing? mustn't you be realizing? mustn't he be realizing? mustn't we be realizing? mustn't you be realizing? mustn't they be realizing?
Perfect
mustn't I have realized? mustn't you have realized? mustn't he have realized? mustn't we have realized? mustn't you have realized? mustn't they have realized?
V-ing perfect
mustn't I have been realizing? mustn't you have been realizing? mustn't he have been realizing? mustn't we have been realizing? mustn't you have been realizing? mustn't they have been realizing?