English verb conjugation
MUST DOWNGRADE

Regular verb: downgrade - downgraded - downgraded

Affirmation

Simple form	V-ing form
I must downgrade you must downgrade he must downgrade we must downgrade you must downgrade they must downgrade	I must be downgrading you must be downgrading he must be downgrading we must be downgrading you must be downgrading they must be downgrading
Perfect	V-ing perfect
I must have downgraded you must have downgraded he must have downgraded we must have downgraded you must have downgraded they must have downgraded	I must have been downgrading you must have been downgrading he must have been downgrading we must have been downgrading you must have been downgrading they must have been downgrading

Negation

Simple form	V-ing form
I mustn't downgrade you mustn't downgrade he mustn't downgrade we mustn't downgrade you mustn't downgrade they mustn't downgrade	I mustn't be downgrading you mustn't be downgrading he mustn't be downgrading we mustn't be downgrading you mustn't be downgrading they mustn't be downgrading
Perfect	V-ing perfect
I mustn't have downgraded you mustn't have downgraded he mustn't have downgraded we mustn't have downgraded you mustn't have downgraded they mustn't have downgraded	I mustn't have been downgrading you mustn't have been downgrading he mustn't have been downgrading we mustn't have been downgrading you mustn't have been downgrading they mustn't have been downgrading

Interrogative form

Simple form	V-ing form
must I downgrade? must you downgrade? must he downgrade? must we downgrade? must you downgrade? must they downgrade?	must I be downgrading? must you be downgrading? must he be downgrading? must we be downgrading? must you be downgrading? must they be downgrading?
Perfect	V-ing perfect
must I have downgraded? must you have downgraded? must he have downgraded? must we have downgraded? must you have downgraded? must they have downgraded?	must I have been downgrading? must you have been downgrading? must he have been downgrading? must we have been downgrading? must you have been downgrading? must they have been downgrading?

Interro-negative form

Simple form	V-ing form
mustn't I downgrade? mustn't you downgrade? mustn't he downgrade? mustn't we downgrade? mustn't you downgrade? mustn't they downgrade?	mustn't I be downgrading? mustn't you be downgrading? mustn't he be downgrading? mustn't we be downgrading? mustn't you be downgrading? mustn't they be downgrading?
Perfect	V-ing perfect
mustn't I have downgraded? mustn't you have downgraded? mustn't he have downgraded? mustn't we have downgraded? mustn't you have downgraded? mustn't they have downgraded?	mustn't I have been downgrading? mustn't you have been downgrading? mustn't he have been downgrading? mustn't we have been downgrading? mustn't you have been downgrading? mustn't they have been downgrading?