English verb conjugation
MUST UNDERSTATE

Regular verb: understate - understated - understated

Affirmation

Simple form	V-ing form
I must understate you must understate he must understate we must understate you must understate they must understate	I must be understating you must be understating he must be understating we must be understating you must be understating they must be understating
Perfect	V-ing perfect
I must have understated you must have understated he must have understated we must have understated you must have understated they must have understated	I must have been understating you must have been understating he must have been understating we must have been understating you must have been understating they must have been understating

Negation

Simple form	V-ing form
I must not understate you must not understate he must not understate we must not understate you must not understate they must not understate	I must not be understating you must not be understating he must not be understating we must not be understating you must not be understating they must not be understating
Perfect	V-ing perfect
I must not have understated you must not have understated he must not have understated we must not have understated you must not have understated they must not have understated	I must not have been understating you must not have been understating he must not have been understating we must not have been understating you must not have been understating they must not have been understating

Interrogative form

Simple form	V-ing form
must I understate? must you understate? must he understate? must we understate? must you understate? must they understate?	must I be understating? must you be understating? must he be understating? must we be understating? must you be understating? must they be understating?
Perfect	V-ing perfect
must I have understated? must you have understated? must he have understated? must we have understated? must you have understated? must they have understated?	must I have been understating? must you have been understating? must he have been understating? must we have been understating? must you have been understating? must they have been understating?

Interro-negative form

Simple form	V-ing form
must I not understate? must you not understate? must he not understate? must we not understate? must you not understate? must they not understate?	must I not be understating? must you not be understating? must he not be understating? must we not be understating? must you not be understating? must they not be understating?
Perfect	V-ing perfect
must I not have understated? must you not have understated? must he not have understated? must we not have understated? must you not have understated? must they not have understated?	must I not have been understating? must you not have been understating? must he not have been understating? must we not have been understating? must you not have been understating? must they not have been understating?