English verb conjugation MUST FLACK

Regular verb: flack - flacked - flacked

Affirmation

Simple form

I must flack
you must flack
he must flack
we must flack
you must flack
they must flack

V-ing form

I must be flacking
you must be flacking
he must be flacking
we must be flacking
you must be flacking
they must be flacking

Perfect

I must have flacked
you must have flacked
he must have flacked
we must have flacked
you must have flacked
they must have flacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I flack?
must you flack?
must he flack?
must we flack?
must you flack?
must they flack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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