English verb conjugation MUST WHIRR

Regular verb: whirr - whirred - whirred

Affirmation

Simple form

I must whirr
you must whirr
he must whirr
we must whirr
you must whirr
they must whirr

V-ing form

I must be whirring
you must be whirring
he must be whirring
we must be whirring
you must be whirring
they must be whirring

Perfect

I must have whirred
you must have whirred
he must have whirred
we must have whirred
you must have whirred
they must have whirred

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I whirr?
must you whirr?
must he whirr?
must we whirr?
must you whirr?
must they whirr?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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