English verb conjugation MUST FISHTAIL

Regular verb: fishtail - fishtailed - fishtailed

Affirmation

Simple form

I must fishtail
you must fishtail
he must fishtail
we must fishtail
you must fishtail
they must fishtail

V-ing form

I must be fishtailing
you must be fishtailing
he must be fishtailing
we must be fishtailing
you must be fishtailing
they must be fishtailing

Perfect

I must have fishtailed
you must have fishtailed
he must have fishtailed
we must have fishtailed
you must have fishtailed
they must have fishtailed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I fishtail?
must you fishtail?
must he fishtail?
must we fishtail?
must you fishtail?
must they fishtail?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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