English verb conjugation MUST PERDURE

Regular verb: perdure - perdured - perdured

Affirmation

Simple form

I must perdure
you must perdure
he must perdure
we must perdure
you must perdure
they must perdure

V-ing form

I must be perduring
you must be perduring
he must be perduring
we must be perduring
you must be perduring
they must be perduring

Perfect

I must have perdured
you must have perdured
he must have perdured
we must have perdured
you must have perdured
they must have perdured

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I perdure?
must you perdure?
must he perdure?
must we perdure?
must you perdure?
must they perdure?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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