English verb conjugation MUST DOFF

Regular verb: doff - doffed - doffed

Affirmation

Simple form

I must doff
you must doff
he must doff
we must doff
you must doff
they must doff

V-ing form

I must be doffing
you must be doffing
he must be doffing
we must be doffing
you must be doffing
they must be doffing

Perfect

I must have doffed
you must have doffed
he must have doffed
we must have doffed
you must have doffed
they must have doffed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I doff?
must you doff?
must he doff?
must we doff?
must you doff?
must they doff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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