English verb conjugation
COULD FORGET

Irregular verb: forget - forgot - forgotten

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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