English verb conjugation MUST WHIFF

Regular verb: whiff - whiffed - whiffed

Affirmation

Simple form

I must whiff
you must whiff
he must whiff
we must whiff
you must whiff
they must whiff

V-ing form

I must be whiffing
you must be whiffing
he must be whiffing
we must be whiffing
you must be whiffing
they must be whiffing

Perfect

I must have whiffed
you must have whiffed
he must have whiffed
we must have whiffed
you must have whiffed
they must have whiffed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I whiff?
must you whiff?
must he whiff?
must we whiff?
must you whiff?
must they whiff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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