English verb conjugation
SHOULD FORGET

Irregular verb: forget - forgot - forgotten

Affirmation

Simple form	V-ing form
I'd forget you'd forget he'd forget we'd forget you'd forget they'd forget	I'd be forgetting you'd be forgetting he'd be forgetting we'd be forgetting you'd be forgetting they'd be forgetting
Perfect	V-ing perfect
I should've forgotten you should've forgotten he should've forgotten we should've forgotten you should've forgotten they should've forgotten	I should've been forgetting you should've been forgetting he should've been forgetting we should've been forgetting you should've been forgetting they should've been forgetting

Negation

Simple form	V-ing form
I shouldn't forget you shouldn't forget he shouldn't forget we shouldn't forget you shouldn't forget they shouldn't forget	I shouldn't be forgetting you shouldn't be forgetting he shouldn't be forgetting we shouldn't be forgetting you shouldn't be forgetting they shouldn't be forgetting
Perfect	V-ing perfect
I shouldn't have forgotten you shouldn't have forgotten he shouldn't have forgotten we shouldn't have forgotten you shouldn't have forgotten they shouldn't have forgotten	I shouldn't have been forgetting you shouldn't have been forgetting he shouldn't have been forgetting we shouldn't have been forgetting you shouldn't have been forgetting they shouldn't have been forgetting

Interrogative form

Simple form	V-ing form
should I forget? should you forget? should he forget? should we forget? should you forget? should they forget?	should I be forgetting? should you be forgetting? should he be forgetting? should we be forgetting? should you be forgetting? should they be forgetting?
Perfect	V-ing perfect
should I have forgotten? should you have forgotten? should he have forgotten? should we have forgotten? should you have forgotten? should they have forgotten?	should I have been forgetting? should you have been forgetting? should he have been forgetting? should we have been forgetting? should you have been forgetting? should they have been forgetting?

Interro-negative form

Simple form	V-ing form
shouldn't I forget? shouldn't you forget? shouldn't he forget? shouldn't we forget? shouldn't you forget? shouldn't they forget?	shouldn't I be forgetting? shouldn't you be forgetting? shouldn't he be forgetting? shouldn't we be forgetting? shouldn't you be forgetting? shouldn't they be forgetting?
Perfect	V-ing perfect
shouldn't I have forgotten? shouldn't you have forgotten? shouldn't he have forgotten? shouldn't we have forgotten? shouldn't you have forgotten? shouldn't they have forgotten?	shouldn't I have been forgetting? shouldn't you have been forgetting? shouldn't he have been forgetting? shouldn't we have been forgetting? shouldn't you have been forgetting? shouldn't they have been forgetting?