English verb conjugation COULD KNIFE

Regular verb: knife - knifed - knifed

Affirmation

Simple form

I could knife
you could knife
he could knife
we could knife
you could knife
they could knife

V-ing form

I could be knifing
you could be knifing
he could be knifing
we could be knifing
you could be knifing
they could be knifing

Perfect

I could have knifed
you could have knifed
he could have knifed
we could have knifed
you could have knifed
they could have knifed

V-ing perfect

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

Negation

Simple form

I could not knife
you could not knife
he could not knife
we could not knife
you could not knife
they could not knife

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I knife?
could you knife?
could he knife?
could we knife?
could you knife?
could they knife?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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