English verb conjugation MUST CURTAIL

Regular verb: curtail - curtailed - curtailed

Affirmation

Simple form

I must curtail
you must curtail
he must curtail
we must curtail
you must curtail
they must curtail

V-ing form

I must be curtailing
you must be curtailing
he must be curtailing
we must be curtailing
you must be curtailing
they must be curtailing

Perfect

I must have curtailed
you must have curtailed
he must have curtailed
we must have curtailed
you must have curtailed
they must have curtailed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I curtail?
must you curtail?
must he curtail?
must we curtail?
must you curtail?
must they curtail?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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