English verb conjugation COULD KNACKER

Regular verb: knacker - knackered - knackered

Affirmation

Simple form

I could knacker
you could knacker
he could knacker
we could knacker
you could knacker
they could knacker

V-ing form

I could be knackering
you could be knackering
he could be knackering
we could be knackering
you could be knackering
they could be knackering

Perfect

I could have knackered
you could have knackered
he could have knackered
we could have knackered
you could have knackered
they could have knackered

V-ing perfect

I could have been knackering
you could have been knackering
he could have been knackering
we could have been knackering
you could have been knackering
they could have been knackering

Negation

Simple form

I could not knacker
you could not knacker
he could not knacker
we could not knacker
you could not knacker
they could not knacker

V-ing form

I could not be knackering
you could not be knackering
he could not be knackering
we could not be knackering
you could not be knackering
they could not be knackering

Perfect

I could not have knackered
you could not have knackered
he could not have knackered
we could not have knackered
you could not have knackered
they could not have knackered

V-ing perfect

I could not have been knackering
you could not have been knackering
he could not have been knackering
we could not have been knackering
you could not have been knackering
they could not have been knackering

Interrogative form

Simple form

could I knacker?
could you knacker?
could he knacker?
could we knacker?
could you knacker?
could they knacker?

V-ing form

could I be knackering?
could you be knackering?
could he be knackering?
could we be knackering?
could you be knackering?
could they be knackering?

Perfect

could I have knackered?
could you have knackered?
could he have knackered?
could we have knackered?
could you have knackered?
could they have knackered?

V-ing perfect

could I have been knackering?
could you have been knackering?
could he have been knackering?
could we have been knackering?
could you have been knackering?
could they have been knackering?

Interro-negative form

Simple form

could I not knacker?
could you not knacker?
could he not knacker?
could we not knacker?
could you not knacker?
could they not knacker?

V-ing form

could I not be knackering?
could you not be knackering?
could he not be knackering?
could we not be knackering?
could you not be knackering?
could they not be knackering?

Perfect

could I not have knackered?
could you not have knackered?
could he not have knackered?
could we not have knackered?
could you not have knackered?
could they not have knackered?

V-ing perfect

could I not have been knackering?
could you not have been knackering?
could he not have been knackering?
could we not have been knackering?
could you not have been knackering?
could they not have been knackering?

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