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