English verb conjugation MUST KNACKER

Regular verb: knacker - knackered - knackered

Affirmation

Simple form

I must knacker
you must knacker
she must knacker
we must knacker
you must knacker
they must knacker

V-ing form

I must be knackering
you must be knackering
she must be knackering
we must be knackering
you must be knackering
they must be knackering

Perfect

I must have knackered
you must have knackered
she must have knackered
we must have knackered
you must have knackered
they must have knackered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I knacker?
must you knacker?
must she knacker?
must we knacker?
must you knacker?
must they knacker?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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