English verb conjugation MUST CUCKOO

Regular verb: cuckoo - cuckooed - cuckooed

Affirmation

Simple form

I must cuckoo
you must cuckoo
he must cuckoo
we must cuckoo
you must cuckoo
they must cuckoo

V-ing form

I must be cuckooing
you must be cuckooing
he must be cuckooing
we must be cuckooing
you must be cuckooing
they must be cuckooing

Perfect

I must have cuckooed
you must have cuckooed
he must have cuckooed
we must have cuckooed
you must have cuckooed
they must have cuckooed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I cuckoo?
must you cuckoo?
must he cuckoo?
must we cuckoo?
must you cuckoo?
must they cuckoo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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