English verb conjugation MUST FESTER

Regular verb: fester - festered - festered

Affirmation

Simple form

I must fester
you must fester
he must fester
we must fester
you must fester
they must fester

V-ing form

I must be festering
you must be festering
he must be festering
we must be festering
you must be festering
they must be festering

Perfect

I must have festered
you must have festered
he must have festered
we must have festered
you must have festered
they must have festered

V-ing perfect

I must have been festering
you must have been festering
he must have been festering
we must have been festering
you must have been festering
they must have been festering

Negation

Simple form

I mustn't fester
you mustn't fester
he mustn't fester
we mustn't fester
you mustn't fester
they mustn't fester

V-ing form

I mustn't be festering
you mustn't be festering
he mustn't be festering
we mustn't be festering
you mustn't be festering
they mustn't be festering

Perfect

I mustn't have festered
you mustn't have festered
he mustn't have festered
we mustn't have festered
you mustn't have festered
they mustn't have festered

V-ing perfect

I mustn't have been festering
you mustn't have been festering
he mustn't have been festering
we mustn't have been festering
you mustn't have been festering
they mustn't have been festering

Interrogative form

Simple form

must I fester?
must you fester?
must he fester?
must we fester?
must you fester?
must they fester?

V-ing form

must I be festering?
must you be festering?
must he be festering?
must we be festering?
must you be festering?
must they be festering?

Perfect

must I have festered?
must you have festered?
must he have festered?
must we have festered?
must you have festered?
must they have festered?

V-ing perfect

must I have been festering?
must you have been festering?
must he have been festering?
must we have been festering?
must you have been festering?
must they have been festering?

Interro-negative form

Simple form

mustn't I fester?
mustn't you fester?
mustn't he fester?
mustn't we fester?
mustn't you fester?
mustn't they fester?

V-ing form

mustn't I be festering?
mustn't you be festering?
mustn't he be festering?
mustn't we be festering?
mustn't you be festering?
mustn't they be festering?

Perfect

mustn't I have festered?
mustn't you have festered?
mustn't he have festered?
mustn't we have festered?
mustn't you have festered?
mustn't they have festered?

V-ing perfect

mustn't I have been festering?
mustn't you have been festering?
mustn't he have been festering?
mustn't we have been festering?
mustn't you have been festering?
mustn't they have been festering?

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