English verb conjugation MUST GRIMACE

Regular verb: grimace - grimaced - grimaced

Affirmation

Simple form

I must grimace
you must grimace
he must grimace
we must grimace
you must grimace
they must grimace

V-ing form

I must be grimacing
you must be grimacing
he must be grimacing
we must be grimacing
you must be grimacing
they must be grimacing

Perfect

I must have grimaced
you must have grimaced
he must have grimaced
we must have grimaced
you must have grimaced
they must have grimaced

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I grimace?
must you grimace?
must he grimace?
must we grimace?
must you grimace?
must they grimace?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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