English verb conjugation MUST STAMMER

Regular verb: stammer - stammered - stammered

Affirmation

Simple form

I must stammer
you must stammer
he must stammer
we must stammer
you must stammer
they must stammer

V-ing form

I must be stammering
you must be stammering
he must be stammering
we must be stammering
you must be stammering
they must be stammering

Perfect

I must have stammered
you must have stammered
he must have stammered
we must have stammered
you must have stammered
they must have stammered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I stammer?
must you stammer?
must he stammer?
must we stammer?
must you stammer?
must they stammer?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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