English verb conjugation MUST FLAIL

Regular verb: flail - flailed - flailed

Affirmation

Simple form

I must flail
you must flail
he must flail
we must flail
you must flail
they must flail

V-ing form

I must be flailing
you must be flailing
he must be flailing
we must be flailing
you must be flailing
they must be flailing

Perfect

I must have flailed
you must have flailed
he must have flailed
we must have flailed
you must have flailed
they must have flailed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I flail?
must you flail?
must he flail?
must we flail?
must you flail?
must they flail?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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