English verb conjugation MUST COO

Regular verb: coo - cooed - cooed

Affirmation

Simple form

I must coo
you must coo
he must coo
we must coo
you must coo
they must coo

V-ing form

I must be cooing
you must be cooing
he must be cooing
we must be cooing
you must be cooing
they must be cooing

Perfect

I must have cooed
you must have cooed
he must have cooed
we must have cooed
you must have cooed
they must have cooed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I coo?
must you coo?
must he coo?
must we coo?
must you coo?
must they coo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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