English verb conjugation MUST HARKEN

Regular verb: harken - harkened - harkened

Affirmation

Simple form

I must harken
you must harken
she must harken
we must harken
you must harken
they must harken

V-ing form

I must be harkening
you must be harkening
she must be harkening
we must be harkening
you must be harkening
they must be harkening

Perfect

I must have harkened
you must have harkened
she must have harkened
we must have harkened
you must have harkened
they must have harkened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I harken?
must you harken?
must she harken?
must we harken?
must you harken?
must they harken?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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