English verb conjugation SHOULD KNOW

Irregular verb: know - knew - known

Affirmation

Simple form

I should know
you should know
he should know
we should know
you should know
they should know

V-ing form

I should be knowing
you should be knowing
he should be knowing
we should be knowing
you should be knowing
they should be knowing

Perfect

I should have known
you should have known
he should have known
we should have known
you should have known
they should have known

V-ing perfect

I should have been knowing
you should have been knowing
he should have been knowing
we should have been knowing
you should have been knowing
they should have been knowing

Negation

Simple form

I should not know
you should not know
he should not know
we should not know
you should not know
they should not know

V-ing form

I should not be knowing
you should not be knowing
he should not be knowing
we should not be knowing
you should not be knowing
they should not be knowing

Perfect

I should not have known
you should not have known
he should not have known
we should not have known
you should not have known
they should not have known

V-ing perfect

I should not have been knowing
you should not have been knowing
he should not have been knowing
we should not have been knowing
you should not have been knowing
they should not have been knowing

Interrogative form

Simple form

should I know?
should you know?
should he know?
should we know?
should you know?
should they know?

V-ing form

should I be knowing?
should you be knowing?
should he be knowing?
should we be knowing?
should you be knowing?
should they be knowing?

Perfect

should I have known?
should you have known?
should he have known?
should we have known?
should you have known?
should they have known?

V-ing perfect

should I have been knowing?
should you have been knowing?
should he have been knowing?
should we have been knowing?
should you have been knowing?
should they have been knowing?

Interro-negative form

Simple form

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

V-ing form

should I not be knowing?
should you not be knowing?
should he not be knowing?
should we not be knowing?
should you not be knowing?
should they not be knowing?

Perfect

should I not have known?
should you not have known?
should he not have known?
should we not have known?
should you not have known?
should they not have known?

V-ing perfect

should I not have been knowing?
should you not have been knowing?
should he not have been knowing?
should we not have been knowing?
should you not have been knowing?
should they not have been knowing?

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