English verb conjugation MUST SEEK

Irregular verb: seek - sought - sought

Affirmation

Simple form

I must seek
you must seek
she must seek
we must seek
you must seek
they must seek

V-ing form

I must be seeking
you must be seeking
she must be seeking
we must be seeking
you must be seeking
they must be seeking

Perfect

I must have sought
you must have sought
she must have sought
we must have sought
you must have sought
they must have sought

V-ing perfect

I must have been seeking
you must have been seeking
she must have been seeking
we must have been seeking
you must have been seeking
they must have been seeking

Negation

Simple form

I mustn't seek
you mustn't seek
she mustn't seek
we mustn't seek
you mustn't seek
they mustn't seek

V-ing form

I mustn't be seeking
you mustn't be seeking
she mustn't be seeking
we mustn't be seeking
you mustn't be seeking
they mustn't be seeking

Perfect

I mustn't have sought
you mustn't have sought
she mustn't have sought
we mustn't have sought
you mustn't have sought
they mustn't have sought

V-ing perfect

I mustn't have been seeking
you mustn't have been seeking
she mustn't have been seeking
we mustn't have been seeking
you mustn't have been seeking
they mustn't have been seeking

Interrogative form

Simple form

must I seek?
must you seek?
must she seek?
must we seek?
must you seek?
must they seek?

V-ing form

must I be seeking?
must you be seeking?
must she be seeking?
must we be seeking?
must you be seeking?
must they be seeking?

Perfect

must I have sought?
must you have sought?
must she have sought?
must we have sought?
must you have sought?
must they have sought?

V-ing perfect

must I have been seeking?
must you have been seeking?
must she have been seeking?
must we have been seeking?
must you have been seeking?
must they have been seeking?

Interro-negative form

Simple form

mustn't I seek?
mustn't you seek?
mustn't she seek?
mustn't we seek?
mustn't you seek?
mustn't they seek?

V-ing form

mustn't I be seeking?
mustn't you be seeking?
mustn't she be seeking?
mustn't we be seeking?
mustn't you be seeking?
mustn't they be seeking?

Perfect

mustn't I have sought?
mustn't you have sought?
mustn't she have sought?
mustn't we have sought?
mustn't you have sought?
mustn't they have sought?

V-ing perfect

mustn't I have been seeking?
mustn't you have been seeking?
mustn't she have been seeking?
mustn't we have been seeking?
mustn't you have been seeking?
mustn't they have been seeking?

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