English verb conjugation MUST SHUTTER

Regular verb: shutter - shuttered - shuttered

Affirmation

Simple form

I must shutter
you must shutter
he must shutter
we must shutter
you must shutter
they must shutter

V-ing form

I must be shuttering
you must be shuttering
he must be shuttering
we must be shuttering
you must be shuttering
they must be shuttering

Perfect

I must have shuttered
you must have shuttered
he must have shuttered
we must have shuttered
you must have shuttered
they must have shuttered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I shutter?
must you shutter?
must he shutter?
must we shutter?
must you shutter?
must they shutter?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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