English verb conjugation COULD KNOW KNOW

Regular verb: know know - know knowed - know knowed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I could know know
you could know know
he could know know
we could know know
you could know know
they could know know

V-ing form

I could be know knowing
you could be know knowing
he could be know knowing
we could be know knowing
you could be know knowing
they could be know knowing

Perfect

I could have know knowed
you could have know knowed
he could have know knowed
we could have know knowed
you could have know knowed
they could have know knowed

V-ing perfect

I could have been know knowing
you could have been know knowing
he could have been know knowing
we could have been know knowing
you could have been know knowing
they could have been know knowing

Negation

Simple form

I could not know know
you could not know know
he could not know know
we could not know know
you could not know know
they could not know know

V-ing form

I could not be know knowing
you could not be know knowing
he could not be know knowing
we could not be know knowing
you could not be know knowing
they could not be know knowing

Perfect

I could not have know knowed
you could not have know knowed
he could not have know knowed
we could not have know knowed
you could not have know knowed
they could not have know knowed

V-ing perfect

I could not have been know knowing
you could not have been know knowing
he could not have been know knowing
we could not have been know knowing
you could not have been know knowing
they could not have been know knowing

Interrogative form

Simple form

could I know know?
could you know know?
could he know know?
could we know know?
could you know know?
could they know know?

V-ing form

could I be know knowing?
could you be know knowing?
could he be know knowing?
could we be know knowing?
could you be know knowing?
could they be know knowing?

Perfect

could I have know knowed?
could you have know knowed?
could he have know knowed?
could we have know knowed?
could you have know knowed?
could they have know knowed?

V-ing perfect

could I have been know knowing?
could you have been know knowing?
could he have been know knowing?
could we have been know knowing?
could you have been know knowing?
could they have been know knowing?

Interro-negative form

Simple form

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

V-ing form

could I not be know knowing?
could you not be know knowing?
could he not be know knowing?
could we not be know knowing?
could you not be know knowing?
could they not be know knowing?

Perfect

could I not have know knowed?
could you not have know knowed?
could he not have know knowed?
could we not have know knowed?
could you not have know knowed?
could they not have know knowed?

V-ing perfect

could I not have been know knowing?
could you not have been know knowing?
could he not have been know knowing?
could we not have been know knowing?
could you not have been know knowing?
could they not have been know knowing?

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