English verb conjugation MUST TARIFF

Regular verb: tariff - tariffed - tariffed

Affirmation

Simple form

I must tariff
you must tariff
he must tariff
we must tariff
you must tariff
they must tariff

V-ing form

I must be tariffing
you must be tariffing
he must be tariffing
we must be tariffing
you must be tariffing
they must be tariffing

Perfect

I must have tariffed
you must have tariffed
he must have tariffed
we must have tariffed
you must have tariffed
they must have tariffed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I tariff?
must you tariff?
must he tariff?
must we tariff?
must you tariff?
must they tariff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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